Drilling system and drilling method

Abstract

The invention relates to the technical field of geological survey and construction, and provides a drilling system and a drilling method, and the drilling system comprises a drilling device and a grouting device. The drilling device comprises a power assembly and a drilling assembly. The power assembly is connected with the drilling assembly and used for driving the drilling assembly to rotate so as to drill towards the lower portion of the stratum. The grouting device comprises a slurry supply assembly and a stirring assembly. The stirring assembly is communicated with the slurry supply assembly, is provided with a discharge port and is used for outputting slurry; the stirring assembly is connected with the drilling end of the drilling assembly so as to be driven by the drilling assembly to rotate and stir. A cementing material can be formed after the slurry and soil are mixed, and the cementing material can be used as a material for forming a pile body after being gelatinized, so that the gelatinizing time of the cementing material can be controlled. And in addition, the drilling system can improve the compactness of the pile body, so that the quality of the pile body is improved, and the stability and safety of drilling construction are improved.

Description

Technical Field

[0001] The present application relates to the field of geological survey and construction technology, and in particular to a drilling system and a drilling method. Background Art

[0002] When civil engineering construction is carried out on some water-rich, loose or weak foundations, it is generally necessary to reinforce the foundation in order to improve the mechanical properties of the soil, enhance the stability of the soil or rock mass, and increase the bearing capacity of the foundation.

[0003] In the prior art, the purpose of strengthening the foundation is generally achieved by drilling holes in the foundation and constructing cast-in-place piles using a drilling and grouting integrated drilling tool. During the construction process, the drilling tool is first placed at a predetermined position, and then a hole is drilled downward in the vertical direction. Then, when the depth of the hole reaches the designed depth, the drill bit is closed, and then a grouting pipe is inserted into the hole to inject concrete. When the injected concrete reaches the designed height, the construction of a cast-in-place pile is completed.

[0004] However, when the length of the bored pile is large, the compactness of the bored pile does not meet the standard, which leads to poor quality of the bored pile and reduces the stability and safety of the drilling construction. Summary of the invention

[0005] The present application provides a drilling system and a drilling method. When the drilling system is used for drilling construction, the density of the pile body can be improved, and then the quality of the pile body can be improved, thereby improving the stability and safety of the drilling construction.

[0006] In order to achieve the above objectives, this application adopts the following technical solutions:

[0007] In a first aspect, the present application provides a drilling system, which includes: a drilling device and a grouting device. The drilling device includes a power component and a drilling component; the power component is connected to the drilling component and is used to drive the drilling component to rotate so as to drill below the formation. The grouting device includes a slurry supply component and a stirring component; the stirring component is connected to the slurry supply component, and the stirring component has a discharge port for outputting slurry; the stirring component is connected to the drilling end of the drilling component so as to rotate and stir under the drive of the drilling component.

[0008] As an optional embodiment, the stirring assembly includes a stirring paddle assembly, which is connected to the drilling end of the drilling assembly and has a retracted state and an unfolded state relative to the drilling assembly;

[0009] When the drilling assembly moves downward, the stirring paddle assembly is in a retracted state, and when the drilling assembly moves upward, the stirring paddle assembly is in an extended state;

[0010] Along a direction perpendicular to the drilling direction of the drilling assembly, an extension length of the stirring paddle assembly when in an extended state is greater than an extension length of the stirring paddle assembly when in a retracted state.

[0011] As an optional embodiment, the stirring paddle assembly includes a plurality of stirring paddles, the first end of the stirring paddle is rotatably connected to the drilling end of the drilling assembly, and the second end of the stirring paddle is a free end;

[0012] When the plurality of stirring paddles rotate to a first position, the stirring paddle assembly is in an extended state; when the plurality of stirring paddles rotate to a second position, the stirring paddle assembly is in a retracted state.

[0013] As an optional implementation, a plurality of stirring paddles are evenly spaced along the circumference of the drilling assembly.

[0014] As an optional embodiment, an injection cavity is provided inside the stirring paddle, and the injection cavity can be connected to the slurry supply assembly; the discharge port is provided on the stirring paddle, and the discharge port connects the injection cavity with the outside.

[0015] As an optional implementation, the discharge port includes a plurality of discharge holes; along the radial direction of the drilling assembly, the plurality of discharge holes are evenly spaced and distributed.

[0016] As an optional embodiment, the discharge hole is located on the first surface of the stirring paddle, and the first surface of the stirring paddle refers to the surface on which the stirring paddle is in contact with the drilling assembly when the stirring paddle is rotated to the second position;

[0017] And / or, the discharge hole is located on the back-to-soil surface of the stirring paddle, and the back-to-soil surface refers to the side of the stirring paddle opposite to the front-to-soil surface when the stirring paddle rotates to the first position and rotates around the axis of the drilling assembly.

[0018] As an optional embodiment, the stirring paddle assembly includes a stirring paddle driving assembly, and the stirring paddle driving assembly is connected to the stirring paddle and is used to drive the stirring paddle to rotate relative to the drilling assembly.

[0019] As an optional implementation, the stirring paddle driving assembly includes a plurality of telescopic members, and the number of the telescopic members is the same as the number of the stirring paddles and corresponds one to one;

[0020] The telescopic member includes a driving member and a telescopic transmission member, wherein the driving member is connected to the telescopic transmission member and is used to drive the telescopic transmission member to move relative to the driving member so as to extend or shorten the telescopic member;

[0021] One end of the telescopic transmission member facing away from the driving member is rotatably connected to the stirring paddle, and one end of the driving member facing away from the telescopic transmission member is rotatably connected to the drilling assembly. The telescopic member is used to drive the stirring paddle to rotate relative to the drilling assembly, so that the stirring paddle is fixed in the first position or the second position, and can be switched to any position between the first position and the second position.

[0022] As an optional implementation, the stirring paddle is provided with a first groove, and when the stirring paddle is rotated to the second position, the telescopic member is accommodated in the first groove.

[0023] As an optional embodiment, the drilling assembly is provided with a second groove; when the stirring paddle is rotated to the second position, the stirring paddle is accommodated in the second groove, the opening direction of the first groove is opposite to the opening direction of the second groove, and the first groove is accommodated in the second groove.

[0024] As an optional implementation, the second groove is adapted to the shape and size of the stirring paddle.

[0025] As an optional implementation, a portion where the second end of the stirring paddle fits the second groove is provided with a rounded corner.

[0026] As an optional implementation, the slurry supply assembly includes a control assembly and a controller, and the controller is electrically connected to the control assembly;

[0027] The control component is configured to control the slurry supply component to be connected to the stirring component when the telescopic member is extended to a maximum length, or is configured to control the slurry supply component to be disconnected from the stirring component when the length of the telescopic member is less than the maximum length.

[0028] As an optional implementation, the control component includes a first overflow valve, which is electrically connected to the controller; the first overflow valve is used to control the connection or disconnection between the slurry supply component and the stirring component;

[0029] The telescopic member is a hydraulic telescopic member, the driving member includes a cylinder body and a piston assembly, and the telescopic transmission member is a piston rod; the piston assembly is arranged in the cylinder body and encloses the cylinder body to form a first cavity, a second cavity and a third cavity arranged in sequence, and the volume of the second cavity is constant;

[0030] The first end of the piston rod is connected to the piston assembly, and the second end of the piston rod extends out of the cylinder body and is rotatably connected to the stirring paddle; the cylinder body is rotatably connected to the drilling assembly;

[0031] The first overflow valve is switchably connected to the first cavity or the second cavity; the first cavity and the third cavity are both connected to the slurry supply assembly.

[0032] As an optional implementation, the piston assembly includes a first piston, a second piston and a piston connector;

[0033] The first piston and the second piston are arranged opposite to each other at a distance, the first end of the piston connector is fixedly connected to the first piston, the second end of the piston connector is fixedly connected to the first surface of the second piston, the first end of the piston rod is connected to the second surface of the second piston, and the first surface and the second surface of the second piston are arranged opposite to each other;

[0034] The first piston has a side facing away from the connecting member and is enclosed with the cylinder body to form the first cavity, the first piston, the second piston and the cylinder body are enclosed to form the second cavity, and the second side of the second piston and the cylinder body are enclosed to form the third cavity;

[0035] The piston assembly reciprocates along the axial direction of the piston rod to change the volumes of the first cavity and the third cavity.

[0036] As an optional implementation, the control assembly includes a two-position four-way valve, and the first cavity and the third cavity are both connected to the two-position four-way valve;

[0037] When the two-position four-way valve is in the first open state, the slurry flows from the third cavity into the two-position four-way valve and from the two-position four-way valve into the first cavity, and the piston rod moves toward the third cavity until the first relief valve is connected with the first cavity. At this time, the telescopic member is extended to the maximum length, the first relief valve is opened, and the slurry supply assembly is connected with the stirring assembly;

[0038] When the two-position four-way valve is in the second open state, the slurry flows from the first cavity into the two-position four-way valve and from the two-position four-way valve into the third cavity, the piston rod moves toward the first cavity, and the first overflow valve is connected with the second cavity. At this time, the first overflow valve is closed, and the slurry supply assembly is disconnected from the stirring assembly.

[0039] As an optional embodiment, the slurry supply assembly includes a slurry generating assembly, the control assembly includes a second overflow valve, the slurry generating assembly is connected to the inlet end of the second overflow valve, and the first overflow valve and the two-position four-way valve are both connected to the outlet end of the second overflow valve.

[0040] As an optional embodiment, the slurry supply assembly includes a stop valve, the inlet end of the stop valve is connected to the slurry generating assembly, and the outlet end of the stop valve is connected to the drilling end of the drilling assembly;

[0041] When the stop valve is opened, the second overflow valve is closed; or when the stop valve is closed, the second overflow valve is opened; the stop valve is used to control the passage or cut off the drilling fluid.

[0042] As an optional implementation, the drilling system further includes a measurement and control device, which is electrically connected to the power assembly and is used to control the working state of the power assembly;

[0043] And / or, the measurement and control device is electrically connected to the drilling assembly to control the working state of the drilling assembly;

[0044] And / or, the measurement and control device is electrically connected to the slurry supply assembly to control the working state of the slurry supply assembly;

[0045] And / or, the measurement and control device is electrically connected to the stirring assembly to control the working state of the stirring assembly.

[0046] As an optional embodiment, the drilling assembly includes a drill rod assembly and a drilling tool, the stirring assembly is connected to the drilling tool, the drilling tool is detachably connected to a first end of the drill rod assembly, and the power assembly is connected to a second end of the drill rod assembly;

[0047] The measuring and controlling device is arranged at the second end of the drill rod assembly. The drill rod assembly is provided with a conductive component, and the conductive component electrically connects the measuring and controlling device with the stirring component.

[0048] As an optional embodiment, the conductive component includes a first conductive member and a second conductive member, the first conductive member is arranged at the first end of the drill rod assembly, and the second conductive member is arranged at the drill tool;

[0049] The first conductive member and the second conductive member both extend along the circumference of the drilling assembly; the first conductive member and the second conductive member are detachably abutted against each other.

[0050] As an optional implementation, the first conductive member is a first conductive ring, the second conductive member is a second conductive ring, and the annular surfaces of the first conductive ring and the second conductive ring are detachably abutted.

[0051] As an optional embodiment, the first end of the drill rod assembly is provided with a tapered barrel, and the drill tool is provided with a tapered groove;

[0052] The first conductive member is disposed on the outer wall of the conical cylinder along the circumference of the conical cylinder; the second conductive member is disposed on the inner wall of the conical groove along the circumference of the conical groove;

[0053] The conical cylinder is detachably inserted into the conical groove.

[0054] In a second aspect, the present application provides a drilling method, which is applied to the drilling system described in any one of the first aspects above, and the method includes:

[0055] Controlling the power assembly to drive the drilling assembly to rotate so as to drill below the formation;

[0056] Controlling the slurry supply component to supply slurry to the stirring component so that the slurry enters the soil of the formation from the discharge port of the stirring component;

[0057] Controlling the power assembly to drive the drilling assembly to rotate and move upward;

[0058] The drilling assembly is controlled to drive the stirring assembly to rotate and stir, so that the slurry and soil are mixed.

[0059] As an optional embodiment, controlling the slurry supply component to supply slurry to the stirring component so that the slurry enters the soil of the formation from the discharge port of the stirring component includes:

[0060] Controlling the slurry supply assembly to deliver the slurry to the first cavity, the piston assembly starts to move toward the third cavity and drives the piston rod to move synchronously with the piston assembly;

[0061] Before the telescopic member is extended to the maximum length, the piston assembly is controlled to move toward the third cavity, the first relief valve is connected to the second cavity, and the first relief valve is in a closed state;

[0062] When the telescopic member is extended to the maximum length, the piston assembly stops moving, the first overflow valve is connected to the first cavity, the first overflow valve is in an open state, and the first overflow valve controls the slurry supply assembly to be connected to the stirring assembly.

[0063] As an optional implementation, after controlling the drilling assembly to drive the stirring assembly to rotate and stir so that the slurry and soil are mixed, the method further includes:

[0064] The slurry supply assembly is controlled to deliver the slurry to the third cavity, the piston assembly moves toward the first cavity and drives the piston rod and the piston assembly to move synchronously, the telescopic part is shortened, the first overflow valve is connected to the second cavity, the first overflow valve is switched to a closed state, and the first overflow valve controls the slurry supply assembly to disconnect from the stirring assembly.

[0065] Compared with the prior art, the beneficial effects of the present application are at least:

[0066] Since the drilling system includes a drilling device, the drilling device includes a power component and a drilling component, the power component is connected to the drilling component and is used to drive the drilling component to rotate so as to drill below the formation. In this way, the power component can drive the drilling component to drill below the formation to the lowest position; similarly, the power component can also drive the drilling component to move from the lowest position to the highest position.

[0067] Next, since the drilling system includes a grouting device, the grouting device includes a slurry supply component and a stirring component; the stirring component is connected to the slurry supply component, and the stirring component has a discharge port for outputting slurry; the stirring component is connected to the drilling end of the drilling component to rotate and stir under the drive of the drilling component. In this way, when the drilling end of the drilling component moves to the lowest point, the technician can start the stirring component located at the drilling end of the drilling component, and then provide slurry to the stirring component through the slurry supply component. The slurry can enter the soil of the formation through the discharge port. At the same time, the stirring component can rotate and stir to mix the slurry and the soil. After the slurry and the soil are mixed, a gelling material can be formed. After gelling, the gelling material can be used as a material for forming the pile body. The gelling material is formed in the formation, and there is no process of transporting from the slurry generating component to the bottom of the hole, so the gelling time of the gelling material can be controlled.

[0068] In addition, since the cementitious material is mixed gradually from the bottom of the hole upwards, compared with the method of injecting concrete into the hole, the gas and liquid in the hole can be removed more thoroughly, so that there will be no holes or cavities in the pile body, which can improve the density of the pile body and the quality of the pile body, thereby improving the stability and safety of the drilling construction.

[0069] Next, since the drilling system is designed with the drilling device and the grouting device on one device, only one device is needed to complete both the drilling operation and the grouting operation. Compared with the solution of using different devices to complete the drilling operation and the grouting operation respectively, the construction efficiency of the drilling construction can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0070] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0071] Figure 1 A cross-sectional view of a drilling system provided in an embodiment of the present application;

[0072] Figure 2 yes Figure 1 A schematic diagram of the structure of the drilling assembly;

[0073] Figure 3 yes Figure 2 Schematic diagram of the structure of the drilling tool;

[0074] Figure 4 yes Figure 3 A schematic diagram of the structure of the drilling tool when the stirring assembly is in an expanded state;

[0075] Figure 5 yes Figure 4 A top view of the stirring assembly in FIG.

[0076] Figure 6 yes Figure 4 A front view of the stirring assembly in FIG.

[0077] Figure 7 is a schematic diagram of the structure of the slurry supply assembly;

[0078] Figure 8 yes Figure 1 An exploded view of part of the drilling system structure;

[0079] Fig. 9 yes Figure 1 Another exploded view of part of the drilling system structure;

[0080] Fig.10 yes Figure 1 The structural diagram at D in the middle;

[0081] Fig.11 yes Figure 2 Schematic diagram of the structure of the middle drill pipe assembly;

[0082] Fig.12 yes Fig.11 Schematic diagram of the structure of the middle drill pipe;

[0083] Fig.13 is a flow chart of a drilling method provided in an embodiment of the present application;

[0084] Fig.14This is a flow chart of another drilling method provided in an embodiment of the present application.

[0085] Description of reference numerals:

[0086] 1-drilling device, 11-power assembly, 12-drilling assembly, 121-drill rod assembly, 1211-grouting channel, 1212-conductive assembly, 12121-first conductive member, 12122-second conductive member, 1213-conical cylinder, 1214-drill rod, 122-drilling tool, 1221-second groove, 12211-rounded corner, 1222-conical groove,

[0087] 2-grouting device, 21-slurry supply assembly, 211-grouting pipeline, 212-control assembly, 2121-first overflow valve, 2122-two-position four-way valve, 2123-second overflow valve, 213-slurry generating assembly, 214-stop valve, 215-hose, 216-collecting container, 22-stirring assembly, 221-stirring paddle assembly, 2211-stirring paddle, 22111-discharge port, 221111-discharge hole, 22112- The first groove, 2212-agitator driving assembly, 22121-telescopic member, 221211-driving member, 2212111-cylinder body, 2212112-piston assembly, 22121121-first piston, 22121122-second piston, 22121123-piston connecting member, 2212113-first cavity, 2212114-second cavity, 2212115-third cavity, 221212-telescopic transmission member,

[0088] 3-Drilling frame,

[0089] 4- Measurement and control device,

[0090] 100-Drilling system. DETAILED DESCRIPTION

[0091] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0092] When civil engineering construction is carried out on some water-rich, loose or weak foundations, in order to improve the mechanical properties of the soil, enhance the stability of the soil or rock mass, and improve the bearing capacity of the foundation, it is generally necessary to reinforce the foundation. In the prior art, the purpose of reinforcing the foundation is generally achieved by drilling holes in the foundation and constructing cast-in-place piles using a drilling and grouting integrated drill. During the construction process, the drill is first placed in a predetermined position, and then a hole is drilled downward in the vertical direction. Then, when the depth of the hole reaches the designed depth, the drill bit is closed, and then the grouting pipe is inserted into the bottom of the hole to inject concrete. When the injected concrete reaches the designed height, the construction of a cast-in-place pile is completed.

[0093] However, when the required pile body is relatively long, if the existing integrated drilling and grouting drilling tools are used for cast pile construction, the total distance of the concrete from the slurry generating assembly to the bottom of the hole is long during grouting, so the total time of the concrete from the slurry generating assembly to the bottom of the hole is long, which makes it difficult for the fluidity and injectability of the concrete to meet the pumping requirements, so that the gel time of the concrete is difficult to control.

[0094] In addition, during the construction of cast-in-place piles, concrete needs to be injected into the hole from the outside, so the gas and liquid in the hole also need to be removed while injecting concrete to ensure the density of the pile body. In the actual construction process, due to the influence of various factors, it is difficult to ensure that all the gas and liquid in the hole are removed during the process of injecting concrete, which will lead to holes or cavities in the pile body, and then the density of the cast-in-place pile does not meet the standard, resulting in poor quality of the cast-in-place pile, thus reducing the stability and safety of the drilling construction.

[0095] Based on the above technical problems, the drilling system provided by the present invention drives the drilling assembly to drill below the formation through the power assembly. When the drilling end of the drilling assembly moves to the lowest point, the technician can start the stirring assembly at the drilling end of the drilling assembly, and then provide slurry to the stirring assembly through the slurry supply assembly. The slurry can enter the soil of the formation through the discharge port. At the same time, the stirring assembly can rotate and stir to mix the slurry and the soil. After the slurry and the soil are mixed, a gelling material can be formed. After gelling, the gelling material can be used as a material for forming a pile body. Since the gelling material is formed in the formation, there is no process of transporting it from the slurry generating assembly to the bottom of the hole, so the gelling time of the gelling material can be controlled.

[0096] In addition, since the cementitious material is mixed gradually from the bottom of the hole upwards, compared with the method of injecting concrete into the hole, the gas and liquid in the hole can be removed more thoroughly, so that there will be no holes or cavities in the pile body, which can improve the density of the pile body and the quality of the pile body, thereby improving the stability and safety of the drilling construction.

[0097] The contents of the present application will be described in detail below in conjunction with the accompanying drawings so that those skilled in the art can understand the contents of the present application more clearly and in detail.

[0098] The specific structure of the above-mentioned drilling system and various possible implementation methods are described in detail below.

[0099] Figure 1 A cross-sectional view of a drilling system 100 provided in an embodiment of the present application is shown in FIG. Figure 2 yes Figure 1 The structural diagram of the drilling assembly 12 is shown in FIG. Figure 3 yes Figure 2 The structural diagram of the middle drilling tool 122, Figure 4 yes Figure 3 Schematic diagram of the structure of the drilling tool 122 when the stirring assembly 22 is in the expanded state.

[0100] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 The drilling system 100 includes: a drilling device 1 and a grouting device 2. The drilling device 1 includes a power assembly 11 and a drilling assembly 12; the power assembly 11 is connected to the drilling assembly 12, and is used to drive the drilling assembly 12 to rotate so as to drill below the formation. The grouting device 2 includes a slurry supply assembly 21 and a stirring assembly 22; the stirring assembly 22 is connected to the slurry supply assembly 21, and the stirring assembly 22 has a discharge port 22111 for outputting slurry; the stirring assembly 22 is connected to the drilling end of the drilling assembly 12, so as to rotate and stir under the drive of the drilling assembly 12.

[0101] In this embodiment, since the drilling system 100 includes a drilling device 1, the drilling device 1 includes a power component 11 and a drilling component 12, the power component 11 is connected to the drilling component 12 to drive the drilling component 12 to rotate to drill a hole below the formation ( Figure 1 In this way, the power assembly 11 can drive the drilling assembly 12 to drill below the formation to the lowest position; similarly, the power assembly 11 can also drive the drilling assembly 12 to move from the lowest position to the highest position.

[0102] Next, since the drilling system 100 includes a grouting device 2, the grouting device 2 includes a slurry supply component 21 and a stirring component 22; the stirring component 22 is connected to the slurry supply component 21, and the stirring component 22 has a discharge port 22111 for outputting slurry; the stirring component 22 is connected to the drilling end of the drilling component 12, so as to rotate and stir under the drive of the drilling component 12. In this way, when the drilling end of the drilling component 12 moves to the lowest point, the technician can start the stirring component 22 located at the drilling end of the drilling component 12, and then provide slurry to the stirring component 22 through the slurry supply component 21. The slurry can enter the soil of the formation through the discharge port 22111. At the same time, the stirring component 22 can rotate and stir to mix the slurry and the soil. After the slurry and the soil are mixed, a cementitious material can be formed, and the cementitious material can be used as a material for forming a pile body after being gelled. The gelling material is formed in the formation, and thus there is no process of being transported from the slurry generating assembly 213 to the bottom of the hole, so the gelling time of the gelling material can be controlled.

[0103] In addition, since the cementitious material is mixed gradually from the bottom of the hole upwards, compared with the method of injecting concrete into the hole, the gas and liquid in the hole can be removed more thoroughly, so that there will be no holes or cavities in the pile body, which can improve the density of the pile body and the quality of the pile body, thereby improving the stability and safety of the drilling construction.

[0104] Next, since the drilling system 100 designs the drilling device 1 and the grouting device 2 on one device, only one device is needed to complete both the drilling operation and the grouting operation. Compared with the solution of using different devices to complete the drilling operation and the grouting operation respectively, the construction efficiency of the drilling construction can be improved.

[0105] It should be noted that the power assembly 11 may be an electric motor assembly or a hydraulic drive assembly, or may be other power assemblies 11 with the same functions, which is not limited in the embodiment of the present application.

[0106] It should also be noted that the drilling assembly 12 includes a drill rod assembly 121 and a drill tool 122, the first end of the drill rod assembly 121 is connected to the drill tool 122, and the second end of the drill rod assembly 121 is connected to the power assembly 11. The drill tool 122 has a relatively high hardness and can play a role in breaking rocks, which is conducive to the drilling assembly 12 drilling below the formation; specifically, the drilling end of the drill tool 122 can be provided with a high-strength steel drill bit or a diamond drill bit. The drill rod assembly 121 is hollowed out to form a grouting channel 1211, and the grouting pipe 211 of the slurry supply assembly 21 is passed through the grouting channel 1211. The drill rod assembly 121 is made of metal, and the metal can be steel or alloy. The drill rod assembly 121 can be cylindrical, prismatic or spiral rod-shaped, or can be other shapes, which are not limited in the embodiments of the present application.

[0107] It should also be noted that the above-mentioned slurry can be cement slurry or lime slurry, or other slurry with gelling properties, which is not limited in the embodiments of the present application.

[0108] It should also be noted that the drilling assembly 12 can be used for drilling on land, or on the seabed, lake bottom or river bottom, and can also be applied to other geological environments, which is not limited in the embodiments of the present application.

[0109] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 The specific structure of a drilling system 100 includes a drilling frame 3, a drilling device 1 and a grouting device 2, and the frame is formed by connecting a steel structure. The drilling device 1 includes a power component 11 and a drilling component 12; the power component 11 is connected to the drilling component 12 and is used to drive the drilling component 12 to rotate. The grouting device 2 includes a slurry supply component 21 and a stirring component 22. The slurry supply component 21 includes a grouting pipe 211, and the grouting pipe 211 is used to transport slurry from the outside to the stirring component 22. The drilling component 12 includes a drill rod assembly 121 and a drilling tool 122. The first end of the drill rod assembly 121 is connected to the drilling tool 122, and the second end of the drill rod assembly 121 is connected to the power component 11. The drill rod assembly 121 is hollowed out to form a grouting channel 1211, and the grouting pipe 211 is passed through the grouting channel 1211. The stirring assembly 22 has a discharge port 22111 for discharging slurry; the stirring assembly 22 is connected to the drilling end of the drilling assembly 12 .

[0110] When using the above-mentioned drilling system 100 for drilling construction, the drilling system 100 is first transported to the drilling location; then the drilling frame 3 is set up and connected at the drilling location; then the other components of the drilling system 100 are assembled to form a complete drilling system 100; then, the power component 11 is started, and the drill rod component 121 is driven by the power component 11 to drill below the formation, and then the drill tool 122 can be driven to drill below the formation; then when the drilling end of the drill tool 122 moves to the lowest point, the technician can start the stirring component 22; then the slurry is provided to the stirring component 22 through the slurry supply component 21, and the slurry enters the stirring component 22 through the grouting pipe 211 and then enters the soil of the formation. At the same time, the stirring component 22 can rotate and stir to mix the slurry and the soil, and at the same time, the drilling component 12 synchronously drives the stirring component 22 to move slowly upward; finally, when the drilling component 12 moves to the highest position, the construction of a pile is completed.

[0111] The slurry and soil can be mixed to form a cementitious material, which can be used as a material for forming a pile body after being gelled. The cementitious material is formed in the stratum, and thus there is no process of being transported from the slurry generating assembly 213 to the bottom of the hole, so the gelling time of the cementitious material can be controlled. In addition, since the cementitious material is gradually mixed upward from the bottom of the hole, compared with the method of injecting concrete into the hole, the gas and liquid in the hole can be more thoroughly removed, so that there will be no holes or cavities in the pile body, and thus the compactness of the pile body can be improved, and the quality of the pile body can be improved, thereby improving the stability and safety of the drilling construction.

[0112] As an optional implementation, in some embodiments, see Figure 1 , Figure 2 , Figure 3 and Figure 4 The stirring assembly 22 includes a stirring paddle assembly 221, which is connected to the drilling end of the drilling assembly 12 and has a retracted state and an extended state relative to the drilling assembly 12. When the drilling assembly 12 moves downward, the stirring paddle assembly 221 is in the retracted state, and when the drilling assembly 12 moves upward, the stirring paddle assembly 221 is in the extended state. Along the direction perpendicular to the drilling direction of the drilling assembly 12, the extended length of the stirring paddle assembly 221 in the extended state is greater than the extended length of the stirring paddle assembly 221 in the retracted state.

[0113] In this embodiment, the stirring paddle assembly 221 has a stowed state and an extended state relative to the drilling assembly 12. When the drilling assembly 12 moves downward, the stirring paddle assembly 221 is in the stowed state. At this time, the extension length of the stirring paddle assembly 221 is small along the direction perpendicular to the drilling of the drilling assembly 12. In this way, the resistance encountered by the drilling assembly 12 when drilling downward is small, making it easier for the drilling assembly 12 to drill to the lowest position, thereby improving the efficiency of the drilling construction.

[0114] When the drilling assembly 12 moves upward, the stirring paddle assembly 221 is in an extended state. At this time, the extension length of the stirring paddle assembly 221 is relatively large along the direction perpendicular to the drilling of the drilling assembly 12. Specifically, this extension length is the designed diameter of the pile body. In this way, as the stirring assembly 22 stirs and rotates from the bottom of the pile hole upward, the slurry and the soil are gradually mixed to form a cementitious material, which can form a pile body.

[0115] The stirring paddle assembly 221 can be freely switched between the retracted state and the unfolded state. In this way, the drilling assembly 12 can be drilled to the lowest position more easily while ensuring that the pile construction can be realized, thereby improving the efficiency of the drilling construction.

[0116] As an optional implementation, in some embodiments, see Figure 1 , Figure 2 , Figure 3 and Figure 4 The stirring paddle assembly 221 includes a plurality of stirring paddles 2211, the first end of the stirring paddle 2211 is rotatably connected to the drilling end of the drilling assembly 12, and the second end of the stirring paddle 2211 is a free end. When the plurality of stirring paddles 2211 rotate to the first position, the stirring paddle assembly 221 is in an extended state; when the plurality of stirring paddles 2211 rotate to the second position, the stirring paddle assembly 221 is in a retracted state.

[0117] In this embodiment, since the stirring paddle assembly 221 includes a plurality of stirring paddles 2211, the first end of the stirring paddle 2211 is rotatably connected to the drilling end of the drilling assembly 12, and the second end of the stirring paddle 2211 is a free end. The stirring paddle assembly 221 can switch between the deployed state and the retracted state by rotating the plurality of stirring paddles 2211, thereby making the switching process more convenient and quick, and thus improving the efficiency of the drilling construction.

[0118] In addition, the stirring paddles 2211 are provided in plurality, so that when the stirring paddle assembly 221 rotates, the slurry and the soil can be mixed more evenly, thereby improving the quality of the cementitious material and thus improving the quality of the pile body.

[0119] It should be noted that the number of the stirring paddles 2211 included in the stirring paddle assembly 221 may be two, three or an integer greater than three, and this embodiment of the present application does not limit this.

[0120] In addition, the first end of the stirring paddle 2211 can also be slidably connected to the drilling end of the drilling assembly 12, and the second end of the stirring paddle 2211 is a free end. Specifically, the first end of the stirring paddle 2211 is inserted into the drilling assembly 12, and when the stirring paddle 2211 slides radially inward relative to the drilling assembly 12, the stirring paddle assembly 221 is in a retracted state; when the stirring paddle 2211 slides radially outward relative to the drilling assembly 12, the stirring paddle assembly 221 is in an extended state.

[0121] As an optional implementation, in some embodiments, see Figure 1 , Figure 2 , Figure 3 and Figure 4 Along the circumference of the drilling assembly 12, the plurality of stirring paddles 2211 are evenly spaced.

[0122] In this way, when the stirring paddle assembly 221 rotates, the stirring paddle assembly 221 can evenly contact and stir the soil at various positions on the inner wall of the pile hole, thereby being able to mix the slurry and the soil more evenly, further improving the quality of the cementitious material, and thus further improving the quality of the pile body.

[0123] It should be noted that the stirring paddle 2211 may be in the shape of a strip, a rod, or a sheet, or may be in other shapes, which is not limited in the embodiment of the present application.

[0124] As an optional implementation, in some embodiments, see Figure 1 , Figure 2 , Figure 3 and Figure 4 The stirring paddle 2211 is provided with an injection cavity inside, and the injection cavity can be connected to the slurry supply assembly 21; the discharge port 22111 is provided on the stirring paddle 2211, and the discharge port 22111 connects the injection cavity with the outside. Specifically, the slurry supply assembly 21 is connected to the injection cavity through a hose 215, and the hose 215 is provided at the first end of the stirring paddle 2211.

[0125] In this embodiment, since the stirring paddle 2211 is provided with an injection cavity, the injection cavity can be connected with the slurry supply assembly 21. In this way, the slurry transported from the slurry supply assembly 21 to the stirring paddle 2211 will be temporarily stored in the injection cavity, which is conducive to the slurry being evenly transported to various parts on the same horizontal plane of the formation when the stirring paddle assembly 221 rotates, so that the generated cementitious material can be evenly distributed in various parts on the same horizontal plane of the formation, which is conducive to improving the compactness of the pile body.

[0126] Next, since the discharge port 22111 is provided on the stirring paddle 2211, the discharge port 22111 connects the injection cavity with the outside. Thus, the stirring paddle 2211 can evenly transport the slurry to the soil of the formation while rotating and stirring, so that the process of mixing the cementitious material and the process of stirring into piles can be carried out simultaneously, thereby improving the efficiency of the drilling construction.

[0127] As an optional implementation, in some embodiments, see Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 6 The discharge port 22111 includes a plurality of discharge holes 221111; along the radial direction of the drilling assembly 12, the plurality of discharge holes 221111 are evenly spaced.

[0128] Specifically, along the radial direction of the drilling assembly 12, the distance between two adjacent discharge holes 221111 is a fixed value, so that when the stirring paddle assembly 221 rotates, the slurry can flow into the soil evenly along the radial direction of the drilling assembly 12. This is conducive to evenly transporting the slurry to various parts on the same horizontal plane of the formation, so that the generated cementitious material can be evenly distributed in various parts on the same horizontal plane of the formation, which is conducive to improving the compactness of the pile body.

[0129] As an optional implementation, in some embodiments, see Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 6 The discharge hole 221111 is located on the first surface of the stirring paddle 2211. The first surface of the stirring paddle 2211 refers to the surface where the stirring paddle 2211 is in contact with the drilling assembly 12 when the stirring paddle 2211 rotates to the second position. In this way, when the stirring paddle assembly 221 switches from the retracted state to the deployed state, the pressure between the outlet end of the discharge hole 221111 and the soil is relatively small, thereby preventing the discharge hole 221111 from being blocked by the soil. Therefore, it is possible to ensure that the slurry can be smoothly transported to the stratum, thereby facilitating the improvement of the compactness of the pile body.

[0130] In some embodiments, the discharge hole 221111 is located on the soil-repelling surface of the stirring paddle 2211, and the soil-repelling surface refers to the side of the stirring paddle 2211 opposite to the soil-repelling surface when the stirring paddle 2211 rotates to the first position and rotates around the axis of the drilling assembly 12. In this way, when the stirring paddle assembly 221 is in the unfolded state and rotates, the pressure between the outlet end of the discharge hole 221111 and the soil is relatively small, thereby preventing the discharge hole 221111 from being blocked by the soil, thereby ensuring that the slurry can be smoothly transported to the formation, thereby facilitating the improvement of the compactness of the pile body.

[0131] As an optional implementation, in some embodiments, see Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 6 The stirring paddle assembly 221 includes a stirring paddle driving assembly 2212 , which is connected to the stirring paddle 2211 and is used to drive the stirring paddle 2211 to rotate relative to the drilling assembly 12 .

[0132] In this way, the stirring paddle 2211 can be driven to switch between the first position and the second position by the stirring paddle driving assembly 2212, thereby realizing the switching of the stirring paddle assembly 221 between the deployed state and the retracted state, thereby improving the efficiency of the state switching of the stirring paddle assembly 221, and thus improving the efficiency of the drilling construction.

[0133] In addition, driving the stirring paddle 2211 to rotate by the stirring paddle driving assembly 2212 is conducive to realizing automatic control of the folding or unfolding of the stirring paddle assembly 221, thereby making the process control of the drilling construction simpler, thereby further improving the efficiency of the drilling construction.

[0134] As an optional implementation, in some embodiments, see Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 6 The stirring paddle driving assembly 2212 includes a plurality of telescopic members 22121, and the number of the telescopic members 22121 is the same as the number of the stirring paddles 2211 and corresponds to each other. The telescopic member 22121 includes a driving member 221211 and a telescopic transmission member 221212, and the driving member 221211 is connected to the telescopic transmission member 221212, and is used to drive the telescopic transmission member 221212 to move relative to the driving member 221211, so as to extend or shorten the telescopic member 22121.

[0135] One end of the telescopic transmission member 221212 away from the driving member 221211 is rotatably connected to the stirring paddle 2211, and one end of the driving member 221211 away from the telescopic transmission member 221212 is rotatably connected to the drilling assembly 12. The telescopic member 22121 is used to drive the stirring paddle 2211 to rotate relative to the drilling assembly 12, so that the stirring paddle 2211 is fixed in the first position or the second position, and can be switched to any position between the first position and the second position.

[0136] In this embodiment, since the stirring paddle driving assembly 2212 includes a plurality of telescopic members 22121, the number of the telescopic members 22121 is the same as the number of the stirring paddles 2211 and corresponds to each other. Thus, each stirring paddle 2211 corresponds to a telescopic member 22121 for driving itself to freely switch between the first position and the second position, so that the driving force can meet the requirements of driving the stirring paddle assembly 221, so that the performance of the drilling system 100 can be more stable during operation.

[0137] Next, since the telescopic member 22121 includes a driving member 221211 and a telescopic transmission member 221212, the driving member 221211 is connected to the telescopic transmission member 221212, and is used to drive the telescopic transmission member 221212 to move relative to the driving member 221211, so that the telescopic member 22121 is extended or shortened. The end of the telescopic transmission member 221212 away from the driving member 221211 is rotatably connected to the stirring paddle 2211, and the end of the driving member 221211 away from the telescopic transmission member 221212 is rotatably connected to the drilling assembly 12. In this way, by moving the telescopic transmission member 221212 relative to the driving member 221211, the length of the telescopic member 22121 can be changed, and then the stirring paddle 2211 can be driven to rotate relative to the drilling assembly 12, so as to achieve the effect of freely switching the stirring paddle 2211 at any position between the first position and the second position.

[0138] Next, since the telescopic member 22121 can fix the stirring paddle 2211 in the first position or the second position, the structure of the stirring paddle assembly 221 in the unfolded state and the retracted state can be more stable, so the performance of the drilling system 100 during operation can be more stable.

[0139] As an optional implementation, in some embodiments, see Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 6 The stirring paddle 2211 is provided with a first groove 22112 , and when the stirring paddle 2211 is rotated to the second position, the telescopic member 22121 is accommodated in the first groove 22112 .

[0140] In this way, when the agitator paddle assembly 221 is in the retracted state, the telescopic member 22121 can be just accommodated in the first groove 22112, which can make the appearance of the agitator paddle assembly 221 in the retracted state more regular, thereby reducing the total volume of the agitator paddle assembly 221 in the retracted state. Therefore, when the drilling assembly 12 moves downward, it is helpful to reduce resistance and improve the efficiency of drilling construction.

[0141] It should be noted that the volume of the first groove 22112 may be greater than the volume of the telescopic member 22121 , or may be the same as the volume of the telescopic member 22121 , and this embodiment of the present application does not limit this.

[0142] As an optional implementation, in some embodiments, see Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 6 The drilling assembly 12 is provided with a second groove 1221; when the stirring paddle 2211 rotates to the second position, the stirring paddle 2211 is accommodated in the second groove 1221, the opening direction of the first groove 22112 is opposite to the opening direction of the second groove 1221, and the first groove 22112 is accommodated in the second groove 1221.

[0143] In this way, when the stirring paddle assembly 221 is in the retracted state, the stirring paddle 2211 can be just accommodated in the second groove 1221, which can make the shape of the drilling assembly 12 more regular, and then when the drilling assembly 12 moves downward, it is helpful to reduce resistance, thereby further improving the efficiency of drilling construction.

[0144] As an optional implementation, in some embodiments, see Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 6 The second groove 1221 is adapted to the shape and size of the stirring paddle 2211 .

[0145] In this way, when the stirring paddle 2211 is accommodated in the second groove 1221, a gap can be avoided between the stirring paddle 2211 and the inner wall of the second groove 1221, so that the outer surface of the drilling assembly 12 is more regular, which is beneficial to reduce resistance when the drilling assembly 12 moves downward, thereby further improving the efficiency of drilling construction.

[0146] As an optional implementation, in some embodiments, see Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 6A rounded corner 12211 is provided at the portion where the second end of the stirring paddle 2211 fits the second groove 1221 .

[0147] In this embodiment, since the second groove 1221 and the stirring paddle 2211 are adapted in shape and size, the inner wall of the second groove 1221 is also provided with a rounded corner 12211 at the position where the second end of the stirring paddle 2211 is in contact with the inner wall of the second groove 1221. In this way, when the stirring paddle 2211 is in contact with the inner wall of the second groove 1221, the second end of the stirring paddle 2211 can smoothly transition, thereby making it easier for the stirring assembly 22 to switch to the retracted state, thereby further improving the efficiency of the drilling construction.

[0148] As an optional implementation, in some embodiments, see Figure 1 , Figure 2 , Figure 7 , Figure 8 and Fig. 9 The slurry supply component 21 includes a control component 212 and a controller, and the controller is electrically connected to the control component 212.

[0149] The control component 212 is configured to: when the telescopic member 22121 is extended to the maximum length, control the slurry supply component 21 to be connected with the stirring component 22; or is configured to: when the length of the telescopic member 22121 is less than the maximum length, control the slurry supply component 21 to be disconnected from the stirring component 22.

[0150] In this way, only when the telescopic member 22121 is extended to the maximum length, the slurry supply assembly 21 can be connected with the stirring assembly 22, and the slurry can be transported to the soil of the formation. That is, only when the stirring assembly 22 is in the expanded state can the cementitious material be mixed and generated. At this time, the diameter of the pile body formed by mixing is the extended length of the stirring paddle assembly 221 in the expanded state, which is also the designed diameter of the pile body.

[0151] When the length of the telescopic member 22121 is less than the maximum length, the slurry supply assembly 21 cannot be connected to the stirring assembly 22, and the slurry cannot be transported to the soil of the formation. That is, when the stirring paddle assembly 221 is in any state other than the unfolded state, the slurry cannot be transported to the soil of the formation, and it is impossible to mix and generate a cementitious material to form a pile body. This can avoid the phenomenon that the actual diameter of the pile body is less than the designed diameter when the cementitious material is mixed to form the pile body before the stirring paddle assembly 221 is in the unfolded state, thereby ensuring that the actual diameter of the pile body meets the requirements of the designed diameter and improving the quality of the pile body.

[0152] Next, since the slurry supply component 21 includes a control component 212 and a controller, the controller is electrically connected to the control component 212. The controller can receive an external control signal and send a control instruction to the control component 212, thereby controlling the slurry supply component 21 to be connected or disconnected with the stirring component 22. Therefore, the function of automatically controlling the connection or disconnection of the slurry supply component 21 and the stirring component 22 can be realized.

[0153] As an optional implementation, in some embodiments, see Figure 1 , Figure 2 , Figure 7 , Figure 8 and Fig. 9 The control component 212 includes a first overflow valve 2121, which is electrically connected to the controller; the first overflow valve 2121 is used to control the connection or disconnection between the slurry supply component 21 and the stirring component 22. Figure 7 The direction of the arrow is the flow direction of the slurry.

[0154] The telescopic part 22121 is a hydraulic telescopic part 22121. The driving part 221211 includes a cylinder body 2212111 and a piston assembly 2212112. The telescopic transmission part 221212 is a piston rod. The piston assembly 2212112 is arranged in the cylinder body 2212111 and is enclosed with the cylinder body 2212111 to form a first cavity 2212113, a second cavity 2212114 and a third cavity 2212115 which are arranged in sequence. The volume of the second cavity 2212114 is constant.

[0155] The first end of the piston rod is connected to the piston assembly 2212112, and the second end of the piston rod extends out of the cylinder body 2212111 and is rotatably connected to the stirring paddle 2211; the cylinder body 2212111 is rotatably connected to the drilling assembly 12.

[0156] The first overflow valve 2121 is switchably connected to the first cavity 2212113 or the second cavity 2212114 ; the first cavity 2212113 and the third cavity 2212115 are both connected to the slurry supply assembly 21 .

[0157] In this embodiment, the first cavity 2212113 and the third cavity 2212115 are both saturated with slurry. When the stirring paddle 2211 is in a position other than the first position, the first overflow valve 2121 is connected to the second cavity 2212114. Since the volume of the second cavity 2212114 is constant, the pressure on the first overflow valve 2121 is small. At this time, the first overflow valve 2121 is in a closed state, and the slurry supply component 21 is disconnected from the stirring component 22. At this time, the slurry cannot flow out of the stirring paddle 2211.

[0158] When the slurry flows into the first cavity 2212113 and flows out of the third cavity 2212115, the volume of the first cavity 2212113 increases and the volume of the third cavity 2212115 decreases, and the piston assembly 2212112 moves toward the third cavity 2212115, driving the piston rod to move synchronously. When the piston assembly 2212112 moves to connect the first relief valve 2121 with the first cavity 2212113, the telescopic member 22121 extends to the maximum length. At this time, the first relief valve 2121 is subjected to a large pressure and switches to an open state, and the slurry supply assembly 21 is connected to the stirring assembly 22, and the slurry can flow out of the stirring paddle 2211.

[0159] When the slurry flows into the third cavity 2212115 and flows out of the first cavity 2212113, the volume of the third cavity 2212115 increases and the volume of the first cavity 2212113 decreases, and the piston assembly 2212112 moves toward the first cavity 2212113, driving the piston rod to move synchronously. When the piston assembly 2212112 moves to connect the first relief valve 2121 with the second cavity 2212114, the length of the telescopic member 22121 is less than the maximum length. At this time, the pressure on the first relief valve 2121 is small and it switches to a closed state, and the slurry supply assembly 21 is disconnected from the stirring assembly 22, and the slurry cannot flow out of the stirring paddle 2211.

[0160] In this way, the slurry is used as the hydraulic fluid to realize the movement of the piston assembly 2212112, and the communication mode of the first overflow valve 2121 can be changed, so as to control the connection or disconnection between the slurry supply assembly 21 and the stirring paddle 2211. In addition, the slurry can be used as the hydraulic fluid, so that the communication structure inside the control assembly 212 is simpler, thereby reducing the probability of failure of the slurry supply assembly 21.

[0161] As an optional implementation, in some embodiments, see Figure 1 , Figure 2 , Figure 7 , Figure 8 and Fig. 9 , the piston assembly 2212112 includes a first piston 22121121, a second piston 22121122 and a piston connector 22121123;

[0162] The first piston 22121121 and the second piston 22121122 are arranged opposite to each other with an interval, the first end of the piston connector 22121123 is fixedly connected to the first piston 22121121, the second end of the piston connector 22121123 is fixedly connected to the first surface of the second piston 22121122, the first end of the piston rod is connected to the second surface of the second piston 22121122, and the first surface and the second surface of the second piston 22121122 are arranged opposite to each other;

[0163] A side of the first piston 22121121 facing away from the connecting piece is enclosed with the cylinder body 2212111 to form a first cavity 2212113; the first piston 22121121, the second piston 22121122 and the cylinder body 2212111 are enclosed to form a second cavity 2212114; the second side of the second piston 22121122 is enclosed with the cylinder body 2212111 to form a third cavity 2212115;

[0164] The piston assembly 2212112 reciprocates along the axial direction of the piston rod to change the volumes of the first cavity 2212113 and the third cavity 2212115.

[0165] In this embodiment, the piston assembly 2212112 formed by connecting the first piston 22121121, the second piston 22121122 and the piston connector 22121123 and the cylinder body 2212111 enclose a first cavity 2212113, a second cavity 2212114 and a third cavity 2212115, and the volume of the second cavity 2212114 can be kept constant. The structure of the piston assembly 2212112 is stable, so the structure of the telescopic member 22121 is stable, thereby extending the service life of the drilling system 100.

[0166] As an optional implementation, in some embodiments, see Figure 1 , Figure 2 , Figure 7 , Figure 8 and Fig. 9 The control component 212 includes a two-position four-way valve 2122 , and the first cavity 2212113 and the third cavity 2212115 are both connected to the two-position four-way valve 2122 .

[0167] When the two-position four-way valve 2122 is in the first open state, the slurry flows from the third cavity 2212115 into the two-position four-way valve 2122 and from the two-position four-way valve 2122 into the first cavity 2212113, and the piston rod moves toward the direction of the third cavity 2212115 until the first overflow valve 2121 is connected with the first cavity 2212113. At this time, the telescopic part 22121 extends to the maximum length, the first overflow valve 2121 opens, and the slurry supply assembly 21 is connected with the stirring assembly 22.

[0168] When the two-position four-way valve 2122 is in the second open state, the slurry flows from the first cavity 2212113 into the two-position four-way valve 2122 and from the two-position four-way valve 2122 into the third cavity 2212115, and the piston rod moves toward the direction of the first cavity 2212113, and the first overflow valve 2121 is connected with the second cavity 2212114. At this time, the first overflow valve 2121 is closed, and the slurry supply assembly 21 is disconnected from the stirring assembly 22.

[0169] In this embodiment, the control assembly 212 is provided with a two-position four-way valve 2122 to control the flow direction of the slurry relative to the first cavity 2212113 and the third cavity 2212115, thereby controlling the first overflow valve 2121 to be in an open or closed state. Since the two-position four-way valve 2122 is relatively simple to control, it is convenient to control the working state of the first overflow valve 2121, thereby improving the efficiency of the drilling construction.

[0170] As an optional implementation, in some embodiments, see Figure 1 , Figure 2 , Figure 7 , Figure 8 and Fig. 9 The slurry supply component 21 includes a slurry generating component 213, and the control component 212 includes a second overflow valve 2123. The slurry generating component 213 is connected to the inlet end of the second overflow valve 2123, and the first overflow valve 2121 and the two-position four-way valve 2122 are both connected to the outlet end of the second overflow valve 2123.

[0171] In this way, the second overflow valve 2123 can control the slurry to flow from the slurry generating assembly 213 to the first overflow valve 2121 and the two-position four-way valve 2122. When the drilling assembly 12 is drilling downward, there is no need to deliver slurry, and the second overflow valve 2123 is closed at this time, which can protect the telescopic member 22121, thereby extending the service life of the slurry supply assembly 21.

[0172] In order to make the internal structure of the drill rod assembly 121 more regular, the slurry supply assembly 21 includes a collection container 216, which is arranged inside the drill tool 122. The first overflow valve 2121, the second overflow valve 2123 and the two-position four-way valve 2122 are all arranged in the collection container 216, and each collection container 216 has only one first overflow valve 2121, one second overflow valve 2123 and one two-position four-way valve 2122.

[0173] It should be noted that the above-mentioned collection container 216 can be a valve cabin or a storage box, or can be other containers, and the embodiment of the present application does not limit this.

[0174] As an optional implementation, in some embodiments, see Figure 1 , Figure 2 , Figure 7 , Figure 8 and Fig. 9 The slurry supply assembly 21 includes a stop valve 214, the inlet end of the stop valve 214 is connected to the slurry generating assembly 213, and the outlet end of the stop valve 214 is connected to the drilling end of the drilling assembly 12. When the stop valve 214 is opened, the second overflow valve 2123 is closed; or when the stop valve 214 is closed, the second overflow valve 2123 is opened; the stop valve 214 is used to control the passage or cut off the drilling fluid.

[0175] In this embodiment, when the stop valve 214 is opened, the second overflow valve 2123 is closed; or when the stop valve 214 is closed, the second overflow valve 2123 is opened. That is, at the same time, only one of the second overflow valve 2123 and the stop valve 214 can be in an open state, and the other can be in a closed state.

[0176] When the drilling assembly 12 drills downward, the stop valve 214 is opened and the second overflow valve 2123 is closed. At this time, the drilling fluid can reach the drilling end of the drilling assembly 12 from the slurry generating assembly 213 through the stop valve 214. The drilling fluid can act as a lubricant to reduce the friction between the drilling assembly 12 and the soil, which makes it easier for the drilling assembly 12 to move downward, thereby improving the efficiency of the drilling construction.

[0177] When the drilling assembly 12 moves upward, the stop valve 214 is closed and the second overflow valve 2123 is opened. At this time, the slurry can flow from the slurry generating assembly 213 through the second overflow valve 2123 to the stirring paddle assembly 221, and then the slurry enters the soil and mixes with the soil to form a cementitious material and then forms a pile body.

[0178] In this way, the slurry supply assembly 21 can not only deliver slurry to the drilling end of the drilling assembly 12, but also deliver drilling fluid to the drilling end of the drilling assembly 12 to improve the efficiency of the drilling construction.

[0179] It should be noted that the stop valve 214 may be a relief valve or a common switch, or other valves, which is not limited in the embodiment of the present application.

[0180] It should also be noted that the above-mentioned drilling fluid can be water or lubricating fluid, or other liquids with the same function, and the embodiments of the present application are not limited to this.

[0181] It should also be noted that the slurry generating assembly 213 is used to generate drilling fluid when the drilling assembly 12 moves downward, and is used to generate slurry when the drilling assembly 12 moves upward.

[0182] As an optional implementation, in some embodiments, see Figure 1 , Figure 2 , Figure 7 , Figure 8 and Fig. 9 The drilling system 100 further includes a measurement and control device 4, which is electrically connected to the power assembly 11 and is used to control the working state of the power assembly 11. Specifically, the measurement and control device 4 can turn on or off the power assembly 11 and can adjust the gear position of the power assembly 11 to adjust the power of the power assembly 11. In this way, the power assembly 11 can be automatically controlled, thereby improving the efficiency of drilling construction.

[0183] And / or, the measurement and control device 4 is electrically connected to the drilling assembly 12 to control the working state of the drilling assembly 12. Specifically, the drilling assembly 12 is provided with a conductive assembly 1212. The measurement and control device 4 can control the on and off of the conductive assembly 1212, thereby controlling the working state of the drilling system 100.

[0184] And / or, the measurement and control device 4 is electrically connected to the slurry supply assembly 21 to control the working state of the slurry supply assembly 21. Specifically, the measurement and control device 4 can control the opening or closing and working state of the first overflow valve 2121, the second overflow valve 2123, the two-position four-way valve 2122 and the stop valve 214. In this way, the slurry supply assembly 21 can be automatically controlled, thereby improving the efficiency of drilling construction.

[0185] And / or, the measurement and control device 4 is electrically connected to the stirring assembly 22, and is used to control the working state of the stirring assembly 22. Specifically, the measurement and control device 4 can control the opening or closing of the stirring assembly 22, and then control the formation of the cementitious material to control the formation of the pile body. In this way, the stirring assembly 22 can be automatically controlled, so the efficiency of the drilling construction can be improved.

[0186] As an optional implementation, in some embodiments, see Figure 1 , Figure 2 , Figure 7 , Figure 8 and Fig. 9 The drilling assembly 12 includes a drill rod assembly 121 and a drill tool 122. The stirring assembly 22 is connected to the drill tool 122. The drill tool 122 is detachably connected to the first end of the drill rod assembly 121. The power assembly 11 is connected to the second end of the drill rod assembly 121. The measurement and control device 4 is arranged at the second end of the drill rod assembly 121. The drill rod assembly 121 is provided with a conductive component 1212. The conductive component 1212 electrically connects the measurement and control device 4 with the stirring assembly 22.

[0187] The drill tool 122 will wear out as the drilling system 100 is used more frequently, so it is necessary to regularly replace the drill tool 122. In this embodiment, since the drilling assembly 12 includes the drill rod assembly 121 and the drill tool 122, the drill tool 122 is detachably connected to the first end of the drill rod assembly 121, so that the drill tool 122 can be replaced regularly.

[0188] Next, since the measurement and control device 4 is arranged at the second end of the drill rod assembly 121, the drill rod assembly 121 is provided with a conductive component 1212, and the conductive component 1212 electrically connects the measurement and control device 4 with the stirring component 22. When the drilling system 100 is working, the measurement and control device 4 is located at the upper part of the drill rod assembly 121, so that the technician can operate the measurement and control device 4 above the formation and thus realize the control of the stirring component 22. This makes the drilling construction more convenient, so it can improve the efficiency of the drilling construction.

[0189] The drill rod assembly 121 is composed of multiple drill rods 1214 spliced ​​along the axis direction of the drill rod 1214, so that the length of the drill rod assembly 121 can be changed by changing the number of drill rods 1214. In this way, the drilling system 100 can construct piles of different lengths, thereby improving the application range of the drilling system 100. In addition, when drilling, the drill rods 1214 can be gradually added as the drill rod assembly 121 gradually moves downward, thereby making the drilling construction more convenient, thereby improving the efficiency of the drilling construction.

[0190] As an optional implementation, in some embodiments, see Figure 1 , Fig. 9 , Fig.10 , Fig.11 and Fig.12 The conductive assembly 1212 includes a first conductive member 12121 and a second conductive member 12122. The first conductive member 12121 is disposed at the first end of the drill rod assembly 121, and the second conductive member 12122 is disposed at the drill tool 122. The first conductive member 12121 and the second conductive member 12122 both extend along the circumference of the drilling assembly 12; the first conductive member 12121 and the second conductive member 12122 are detachably abutted.

[0191] Compared with the solution that the first conductive member 12121 and the second conductive member 12122 do not extend along the circumferential direction of the drilling assembly 12, when the first end of the drill rod assembly 121 is connected to the drill tool 122, there is no need to consider the point alignment of the drill rod assembly 121 and the drill tool 122. Even if the drill tool 122 rotates a certain angle relative to the axis of the drill rod assembly 121, the first conductive member 12121 and the second conductive member 12122 can be smoothly abutted to connect the conductive assembly 1212. In this way, while ensuring that the conductive assembly 1212 is smoothly connected, it is convenient to connect the drill tool 122 and the drill rod assembly 121, thereby improving the efficiency of drilling construction.

[0192] It should be noted that the first conductive member 12121 and the second conductive member 12122 may be copper conductive members or aluminum conductive members, or conductive members made of other materials, which is not limited in the embodiment of the present application.

[0193] In order to enable the conductive component 1212 to form a closed loop, at least two first conductive members 12121 are spaced apart at the first end of the drill rod assembly 121, and at least two second conductive members 12122 are spaced apart at the drill tool 122. The at least two first conductive members 12121 and the at least two second conductive members 12122 correspond to each other one by one and are detachably connected to form at least two conductive channels.

[0194] As an optional implementation, in some embodiments, see Figure 1 , Fig. 9 , Fig.10 , Fig.11 and Fig.12 The first conductive member 12121 is a first conductive ring, the second conductive member 12122 is a second conductive ring, and the annular surfaces of the first conductive ring and the second conductive ring are detachably abutted.

[0195] In this way, when the first end of the drill rod assembly 121 is connected to the drill tool 122, even if the drill tool 122 rotates at any angle relative to the axis of the drill rod assembly 121, the first conductive member 12121 and the second conductive member 12122 can be smoothly abutted against each other to connect the conductive assembly 1212, thereby further improving the probability of the conductive assembly 1212 being connected, thereby improving the efficiency of the drilling construction.

[0196] As an optional implementation, in some embodiments, see Figure 1 , Fig. 9 , Fig.10 , Fig.11 and Fig.12The first end of the drill rod assembly 121 is provided with a tapered barrel 1213, and the drill tool 122 is provided with a tapered groove 1222. The first conductive member 12121 is provided on the outer wall of the tapered barrel 1213 along the circumference of the tapered barrel 1213; the second conductive member 12122 is provided on the inner wall of the tapered groove 1222 along the circumference of the tapered groove 1222; the tapered barrel 1213 is detachably inserted into the tapered groove 1222. The sizes of the tapered barrel 1213 and the tapered groove 1222 are adapted.

[0197] When at least two first conductive members 12121 are arranged at intervals at the first end of the drill rod assembly 121, and at least two second conductive members 12122 are arranged at intervals at the drill tool 122, when the first end of the drill rod assembly 121 is connected to the drill tool 122, the first conductive member 12121 and the second conductive member 12122 that should not be connected may be mistakenly connected.

[0198] In order to solve the above problem, a conical cylinder 1213 is provided at the first end of the drill rod assembly 121, and a conical groove 1222 is provided at the drill tool 122. The first conductive member 12121 is provided on the outer wall of the conical cylinder 1213 along the circumference of the conical cylinder 1213; the second conductive member 12122 is provided on the inner wall of the conical groove 1222 along the circumference of the conical groove 1222. In this way, when the conical cylinder 1213 is inserted into the conical groove 1222, only when the insertion end of the conical cylinder 1213 contacts the bottom of the conical groove 1222, the outer wall of the conical cylinder 1213 and the inner wall of the conical groove 1222 will be completely in contact, and at this time, at least two first conductive members 12121 and at least two second conductive members 12122 can be normally connected, so the phenomenon of the first conductive member 12121 and the second conductive member 12122 being connected by mistake can be avoided. In this way, the probability of failure of the drilling system 100 is reduced, so the efficiency of drilling construction can be improved.

[0199] The embodiment of the present application further provides a drilling method, which is applied to any one of the above-mentioned drilling systems 100 .

[0200] Fig.13 is a flowchart of a drilling method provided in an embodiment of the present application, see Fig.13 , the method comprising:

[0201] Step 131: Control the power assembly to drive the drilling assembly to rotate so as to drill below the formation.

[0202] Step 132: Control the slurry supply component to supply slurry to the stirring component, so that the slurry enters the soil of the formation from the discharge port of the stirring component.

[0203] Step 133: Control the power assembly to drive the drilling assembly to rotate and move upward.

[0204] Step 134: Control the drilling assembly to drive the stirring assembly to rotate and stir, so as to mix the slurry and the soil.

[0205] When the drilling method is used for drilling construction, when the drilling end of the drilling assembly 12 moves to the lowest point, the technician can start the stirring assembly 22 located at the drilling end of the drilling assembly 12, and then provide slurry to the stirring assembly 22 through the slurry supply assembly 21. The slurry can enter the soil of the formation through the discharge port 22111. At the same time, the stirring assembly 22 can rotate and stir to mix the slurry and the soil. After the slurry and the soil are mixed, a gelling material can be formed. After gelling, the gelling material can be used as a material for forming a pile body. The gelling material is formed in the formation, and there is no process of transporting it from the slurry generating assembly 213 to the bottom of the hole, so the gelling time of the gelling material can be controlled.

[0206] In addition, since the cementitious material is mixed gradually from the bottom of the hole upwards, compared with the method of injecting concrete into the hole, the gas and liquid in the hole can be removed more thoroughly, so that there will be no holes or cavities in the pile body, which can improve the density of the pile body and the quality of the pile body, thereby improving the stability and safety of the drilling construction.

[0207] Next, since the drilling method only needs one device to complete the drilling operation and the grouting operation, compared with the solution of using different devices to complete the drilling operation and the grouting operation respectively, the construction efficiency of the drilling construction can be improved.

[0208] As an optional embodiment, controlling the slurry supply component 21 to supply slurry to the stirring component 22 so that the slurry enters the soil of the formation from the discharge port 22111 of the stirring component includes:

[0209] The slurry supply assembly 21 is controlled to deliver the slurry to the first cavity 2212113, and the piston assembly 2212112 begins to move toward the third cavity 2212115 and drives the piston rod and the piston assembly 2212112 to move synchronously;

[0210] Before the telescopic member 22121 is extended to the maximum length, the piston assembly 2212112 moves toward the third cavity 2212115, the first relief valve 2121 is connected to the second cavity 2212114, and the first relief valve 2121 is in a closed state;

[0211] When the telescopic member 22121 is extended to the maximum length, the piston assembly 2212112 stops moving, the first overflow valve 2121 is connected to the first cavity 2212113, the first overflow valve 2121 is in an open state, and the first overflow valve 2121 controls the slurry supply assembly 21 to be connected to the stirring assembly 22.

[0212] As an optional embodiment, after controlling the drilling assembly 12 to drive the stirring assembly 22 to rotate and stir so that the slurry and the soil are mixed, the method further includes:

[0213] The slurry supply assembly 21 is controlled to transport the slurry to the third cavity 2212115, the piston assembly 2212112 moves toward the direction of the first cavity 2212113 and drives the piston rod and the piston assembly 2212112 to move synchronously, the telescopic part 22121 is shortened, the first overflow valve 2121 is connected with the second cavity 2212114, the first overflow valve 2121 is switched to a closed state, and the first overflow valve 2121 controls the slurry supply assembly 21 to disconnect from the stirring assembly 22.

[0214] All the above optional technical solutions can be combined in any way to form optional embodiments of the present application, and the embodiments of the present application will not be described in detail one by one.

[0215] Fig.14 is a flow chart of another drilling method provided in an embodiment of the present application, see Fig.14 , the method comprising:

[0216] Step 141: Control the power assembly to drive the drilling assembly to rotate so as to drill below the formation.

[0217] Specifically, the power assembly 11 drives the drilling assembly 12 to rotate to drill below the formation until the drilling end of the drilling assembly 12 reaches the lowest position. Before starting the power assembly 11, the drilling system 100 needs to be transported to the drilling position; then the drilling frame 3 is set up and connected at the drilling position; then the other components of the drilling system 100 are assembled to form a complete drilling system 100. After starting the power assembly 11, the power assembly 11 drives the drill rod assembly 121 to drill below the formation, and then drives the drilling tool 122 to drill below the formation until the drilling end of the drilling tool 122 moves to the lowest point.

[0218] During this process, the stop valve 214 is opened and the second overflow valve 2123 is closed. The drilling fluid can reach the drilling end of the drilling component 12 from the slurry generating component 213 through the stop valve 214. The drilling fluid can act as a lubricant to reduce the friction between the drilling component 12 and the soil, which makes it easier for the drilling component 12 to move downward, thereby improving the efficiency of the drilling construction.

[0219] Step 142: Control the slurry supply assembly to deliver the slurry to the first cavity, and the piston assembly starts to move toward the third cavity and drives the piston rod and the piston assembly to move synchronously.

[0220] Specifically, see Figure 7, the technician controls the stop valve 214 to switch to the closed state and controls the second overflow valve 2123 to switch to the open state by operating the measurement and control device 4, at which time the slurry can be transported to the two-position four-way valve 2122. Then, by operating the measurement and control device 4, the two-position four-way valve 2122 is controlled to be in the first open state, at which time the slurry flows from the third cavity 2212115 into the two-position four-way valve 2122 and from the two-position four-way valve 2122 into the first cavity 2212113, and the piston rod begins to move toward the third cavity 2212115.

[0221] Step 143: Before the telescopic member is extended to the maximum length, the piston assembly is controlled to move toward the third cavity, the first overflow valve is connected to the second cavity, and the first overflow valve is in a closed state.

[0222] Step 144: When the telescopic member is extended to the maximum length, the piston assembly stops moving, the first overflow valve is connected to the first cavity, the first overflow valve is in an open state, and the first overflow valve controls the slurry supply assembly to be connected to the stirring assembly.

[0223] Step 145: Control the power assembly to drive the drilling assembly to rotate and move upward.

[0224] Step 146: Control the drilling assembly to drive the stirring assembly to rotate and stir, so as to mix the slurry and the soil.

[0225] Specifically, the drilling assembly 12 drives the stirring assembly 22 to rotate and stir, so that the slurry and soil are mixed to form a cementitious material, until the drilling end of the drilling assembly 12 reaches the highest position. The cementitious materials formed in this process are combined together to form a pile body.

[0226] Step 147: Control the slurry supply assembly to deliver the slurry to the third cavity, the piston assembly moves toward the direction of the first cavity and drives the piston rod and the piston assembly to move synchronously, the telescopic part shortens, the first overflow valve is connected to the second cavity, the first overflow valve is switched to a closed state, and the first overflow valve controls the slurry supply assembly to disconnect from the stirring assembly.

[0227] At this time, the slurry cannot flow out of the stirring assembly 22, and the construction of one pile is completed. After the slurry supply assembly 21 is disconnected from the stirring assembly 22, the piston assembly 2212112 continues to move toward the first cavity 2212113 and drives the piston rod and the piston assembly 2212112 to move synchronously until the piston assembly 2212112 cannot move. At this time, the telescopic member 22121 is shortened to the shortest length, and the stirring assembly 22 is in a closed state.

[0228] When the drilling method is used for drilling construction, when the drilling end of the drilling assembly 12 moves to the lowest point, the technician can start the stirring assembly 22 located at the drilling end of the drilling assembly 12, and then provide slurry to the stirring assembly 22 through the slurry supply assembly 21. The slurry can enter the soil of the formation through the discharge port 22111. At the same time, the stirring assembly 22 can rotate and stir to mix the slurry and the soil. After the slurry and the soil are mixed, a gelling material can be formed. After gelling, the gelling material can be used as a material for forming a pile body. The gelling material is formed in the formation, and there is no process of transporting it from the slurry generating assembly 213 to the bottom of the hole, so the gelling time of the gelling material can be controlled.

[0229] In addition, since the cementitious material is mixed gradually from the bottom of the hole upwards, compared with the method of injecting concrete into the hole, the gas and liquid in the hole can be removed more thoroughly, so that there will be no holes or cavities in the pile body, which can improve the density of the pile body and the quality of the pile body, thereby improving the stability and safety of the drilling construction.

[0230] Next, since the drilling method only needs one device to complete the drilling operation and the grouting operation, compared with the solution of using different devices to complete the drilling operation and the grouting operation respectively, the construction efficiency of the drilling construction can be improved.

[0231] It should be noted that the phrases "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments", etc. mentioned in the specification indicate that the described embodiments may include certain features, structures or characteristics, but not every embodiment may include the certain features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when a certain feature, structure or characteristic is described in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments, whether explicitly or not explicitly described.

[0232] In general, terms should be understood, at least in part, by the context in which they are used. For example, the term "one or more" as used herein may be used to describe any feature, structure, or characteristic in a singular sense, or may be used to describe a combination of features, structures, or characteristics in a plural sense, depending, at least in part, on the context. Similarly, terms such as "a," "an," or "the" may also be understood to convey singular usage or to convey plural usage, depending, at least in part, on the context.

[0233] It should be easily understood that “on,” “above,” and “over” in this application should be interpreted in the broadest manner, so that “on” not only means “directly on something,” but also includes the meaning of “on something” with intervening features or layers therebetween, and “above” or “over” not only includes the meaning of “above something” or “over,” but also may include the meaning of “above something” or “over” with no intervening features or layers therebetween, that is, directly on something.

[0234] In addition, spatially relative terms, such as "below," "below," "beneath," "above," "above," etc., may be used herein for ease of description to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation shown in the figures. The device may have other orientations rotated 90° or at other orientations, and the spatially relative descriptors used herein should likewise be interpreted accordingly.

[0235] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A drilling system (100), characterized in that: include: A drilling device (1), the drilling device (1) comprising a power assembly (11) and a drilling assembly (12); the power assembly (11) is connected to the drilling assembly (12) and is used to drive the drilling assembly (12) to rotate so as to drill below the formation; A grouting device (2), the grouting device (2) comprising a slurry supply component (21) and a stirring component (22); the stirring component (22) is connected to the slurry supply component (21), and the stirring component (22) has a discharge port (22111) for discharging slurry; the stirring component (22) is connected to the drilling end of the drilling component (12) so as to rotate and stir under the drive of the drilling component (12).

2. The drilling system (100) according to claim 1, characterized in that: The stirring assembly (22) comprises a stirring paddle assembly (221), wherein the stirring paddle assembly (221) is connected to the drilling end of the drilling assembly (12) and has a retracted state and an unfolded state relative to the drilling assembly (12); When the drilling assembly (12) moves downward, the stirring paddle assembly (221) is in a retracted state, and when the drilling assembly (12) moves upward, the stirring paddle assembly (221) is in an extended state; Along a direction perpendicular to the drilling direction of the drilling assembly (12), the extension length of the stirring paddle assembly (221) when in an extended state is greater than the extension length of the stirring paddle assembly (221) when in a retracted state.

3. The drilling system (100) according to claim 2, characterized in that: The stirring paddle assembly (221) comprises a plurality of stirring paddles (2211), the first end of each stirring paddle (2211) being rotatably connected to the drilling end of the drilling assembly (12), and the second end of each stirring paddle (2211) being a free end; When the plurality of stirring paddles (2211) rotate to a first position, the stirring paddle assembly (221) is in an extended state; when the plurality of stirring paddles (2211) rotate to a second position, the stirring paddle assembly (221) is in a retracted state.

4. The drilling system (100) according to claim 3, characterized in that: Along the circumference of the drilling assembly (12), a plurality of stirring paddles (2211) are evenly spaced.

5. The drilling system (100) according to claim 3, characterized in that: The stirring paddle (2211) is provided with an injection cavity inside, and the injection cavity can be connected to the slurry supply component (21); the discharge port (22111) is provided on the stirring paddle (2211), and the discharge port (22111) connects the injection cavity with the outside.

6. The drilling system (100) according to claim 5, characterized in that: The discharge port (22111) comprises a plurality of discharge holes (221111); along the radial direction of the drilling assembly (12), the plurality of discharge holes (221111) are evenly spaced and distributed.

7. The drilling system (100) according to claim 5, characterized in that: The discharge hole (221111) is located on a first surface of the stirring paddle (2211), and the first surface of the stirring paddle (2211) refers to a surface on which the stirring paddle (2211) and the drilling assembly (12) are in contact when the stirring paddle (2211) rotates to the second position; And / or, the discharge hole (221111) is located on the back-to-soil surface of the stirring paddle (2211), and the back-to-soil surface refers to the side of the stirring paddle (2211) opposite to the front-to-soil surface when the stirring paddle (2211) rotates to the first position and rotates around the axis of the drilling assembly (12).

8. The drilling system (100) according to claim 3, characterized in that: The stirring paddle assembly (221) comprises a stirring paddle driving assembly (2212), wherein the stirring paddle driving assembly (2212) is connected to the stirring paddle (2211) and is used to drive the stirring paddle (2211) to rotate relative to the drilling assembly (12).

9. The drilling system (100) according to claim 8, characterized in that: The stirring paddle driving assembly (2212) comprises a plurality of telescopic members (22121), and the number of the telescopic members (22121) is the same as the number of the stirring paddles (2211) and corresponds one to one; The telescopic member (22121) comprises a driving member (221211) and a telescopic transmission member (221212); the driving member (221211) is connected to the telescopic transmission member (221212) and is used to drive the telescopic transmission member (221212) to move relative to the driving member (221211) so as to extend or shorten the telescopic member (22121); One end of the telescopic transmission member (221212) facing away from the driving member (221211) is rotatably connected to the stirring paddle (2211), and one end of the driving member (221211) facing away from the telescopic transmission member (221212) is rotatably connected to the drilling assembly (12). The telescopic member (22121) is used to drive the stirring paddle (2211) to rotate relative to the drilling assembly (12), so that the stirring paddle (2211) is fixed at the first position or the second position, and switched to any position between the first position and the second position.

10. The drilling system (100) according to claim 9, characterized in that: The stirring paddle (2211) is provided with a first groove (22112), and when the stirring paddle (2211) rotates to the second position, the telescopic member (22121) is accommodated in the first groove (22112).

11. The drilling system (100) according to claim 10, characterized in that: The drilling assembly (12) is provided with a second groove (1221); when the stirring paddle (2211) rotates to the second position, the stirring paddle (2211) is accommodated in the second groove (1221), the opening direction of the first groove (22112) is opposite to the opening direction of the second groove (1221), and the first groove (22112) is accommodated in the second groove (1221).

12. The drilling system (100) according to claim 11, characterized in that The second groove (1221) is compatible with the shape and size of the stirring paddle (2211).

13. The drilling system (100) according to claim 12, characterized in that A rounded corner (12211) is provided at a portion where the second end of the stirring paddle (2211) fits into the second groove (1221).

14. The drilling system (100) according to any one of claims 9 to 13, characterized in that: The slurry supply component (21) comprises a control component (212) and a controller, wherein the controller is electrically connected to the control component (212); The control component (212) is configured to control the slurry supply component (21) to be connected with the stirring component (22) when the telescopic member (22121) is extended to a maximum length, or is configured to control the slurry supply component (21) to be disconnected from the stirring component (22) when the length of the telescopic member (22121) is less than the maximum length.

15. The drilling system (100) according to claim 14, characterized in that The control component (212) comprises a first overflow valve (2121), and the first overflow valve (2121) is electrically connected to the controller; the first overflow valve (2121) is used to control the connection or disconnection between the slurry supply component (21) and the stirring component (22); The telescopic member (22121) is a hydraulic telescopic member (22121); the driving member (221211) comprises a cylinder body (2212111) and a piston assembly (2212112); the telescopic transmission member (221212) is a piston rod; the piston assembly (2212112) is arranged in the cylinder body (2212111) and is enclosed with the cylinder body (2212111) to form a first cavity (2212113), a second cavity (2212114) and a third cavity (2212115) which are arranged in sequence; the volume of the second cavity (2212114) is constant; The first end of the piston rod is connected to the piston assembly (2212112), and the second end of the piston rod extends out of the cylinder body (2212111) and is rotatably connected to the stirring paddle (2211); the cylinder body (2212111) is rotatably connected to the drilling assembly (12); The first overflow valve (2121) is switchably connected to the first cavity (2212113) or the second cavity (2212114); the first cavity (2212113) and the third cavity (2212115) are both connected to the slurry supply assembly (21).

16. The drilling system (100) according to claim 15, characterized in that The piston assembly (2212112) comprises a first piston (22121121), a second piston (22121122) and a piston connector (22121123); The first piston (22121121) and the second piston (22121122) are arranged opposite to each other at a distance, the first end of the piston connector (22121123) is fixedly connected to the first piston (22121121), the second end of the piston connector (22121123) is fixedly connected to the first surface of the second piston (22121122), the first end of the piston rod is connected to the second surface of the second piston (22121122), and the first surface and the second surface of the second piston (22121122) are arranged opposite to each other; A side of the first piston (22121121) facing away from the connecting member and the cylinder body (2212111) are enclosed to form the first cavity (2212113); the first piston (22121121), the second piston (22121122) and the cylinder body (2212111) are enclosed to form the second cavity (2212114); and the second side of the second piston (22121122) and the cylinder body (2212111) are enclosed to form the third cavity (2212115); The piston assembly (2212112) reciprocates along the axial direction of the piston rod to change the volumes of the first cavity (2212113) and the third cavity (2212115).

17. The drilling system (100) according to claim 16, characterized in that The control component (212) comprises a two-position four-way valve (2122), and the first cavity (2212113) and the third cavity (2212115) are both in communication with the two-position four-way valve (2122); When the two-position four-way valve (2122) is in the first open state, the slurry flows from the third cavity (2212115) into the two-position four-way valve (2122) and flows from the two-position four-way valve (2122) into the first cavity (2212113), and the piston rod moves toward the third cavity (2212115) until the first overflow valve (2121) is connected to the first cavity (2212113), at which time the telescopic member (22121) is extended to the maximum length, the first overflow valve (2121) is opened, and the slurry supply component (21) is connected to the stirring component (22); When the two-position four-way valve (2122) is in the second open state, the slurry flows from the first cavity (2212113) into the two-position four-way valve (2122) and flows from the two-position four-way valve (2122) into the third cavity (2212115), the piston rod moves toward the first cavity (2212113), the first overflow valve (2121) is connected to the second cavity (2212114), and at this time the first overflow valve (2121) is closed, and the slurry supply component (21) is disconnected from the stirring component (22).

18. The drilling system (100) according to claim 16, characterized in that The slurry supply component (21) includes a slurry generating component (213), and the control component (212) includes a second overflow valve (2123). The slurry generating component (213) is connected to the inlet end of the second overflow valve (2123), and the first overflow valve (2121) and the two-position four-way valve (2122) are both connected to the outlet end of the second overflow valve (2123).

19. The drilling system (100) according to claim 18, characterized in that The slurry supply component (21) comprises a stop valve (214), the inlet end of the stop valve (214) is in communication with the slurry generating component (213), and the outlet end of the stop valve (214) is in communication with the drilling end of the drilling component (12); When the stop valve (214) is opened, the second overflow valve (2123) is closed; or when the stop valve (214) is closed, the second overflow valve (2123) is opened; the stop valve (214) is used to control the passage or cut off of drilling fluid.

20. The drilling system (100) according to any one of claims 1 to 13 or claims 15 to 19, characterized in that: The drilling system (100) further comprises a measurement and control device (4), wherein the measurement and control device (4) is electrically connected to the power assembly (11) and is used to control the working state of the power assembly (11); And / or, the measurement and control device (4) is electrically connected to the drilling assembly (12) to control the working state of the drilling assembly (12); And / or, the measurement and control device (4) is electrically connected to the slurry supply component (21) to control the working state of the slurry supply component (21); And / or, the measurement and control device (4) is electrically connected to the stirring component (22) and is used to control the working state of the stirring component (22).

21. The drilling system (100) according to claim 20, characterized in that The drilling assembly (12) comprises a drill rod assembly (121) and a drilling tool (122), the stirring assembly (22) is connected to the drilling tool (122), the drilling tool (122) is detachably connected to a first end of the drill rod assembly (121), and the power assembly (11) is connected to a second end of the drill rod assembly (121); The measurement and control device (4) is arranged at the second end of the drill rod assembly (121); the drill rod assembly (121) is provided with a conductive assembly (1212); and the conductive assembly (1212) electrically connects the measurement and control device (4) with the stirring assembly (22).

22. The drilling system (100) according to claim 21, characterized in that The conductive component (1212) comprises a first conductive member (12121) and a second conductive member (12122), wherein the first conductive member (12121) is arranged at a first end of the drill rod component (121), and the second conductive member (12122) is arranged at the drill tool (122); The first conductive member (12121) and the second conductive member (12122) both extend along the circumference of the drilling assembly (12); the first conductive member (12121) and the second conductive member (12122) are detachably abutted against each other.

23. The drilling system (100) according to claim 22, characterized in that The first conductive member (12121) is a first conductive ring, the second conductive member (12122) is a second conductive ring, and the annular surfaces of the first conductive ring and the second conductive ring are detachably abutted.

24. The drilling system (100) according to claim 22, characterized in that The first end of the drill rod assembly (121) is provided with a tapered tube (1213), and the drilling tool (122) is provided with a tapered groove (1222); The first conductive member (12121) is arranged on the outer wall of the conical cylinder (1213) along the circumference of the conical cylinder (1213); the second conductive member (12122) is arranged on the inner wall of the conical groove (1222) along the circumference of the conical groove (1222); The conical cylinder (1213) is detachably inserted into the conical groove (1222).

25. A drilling method, characterized in that: The drilling system (100) applied to any one of claims 1 to 24, the method comprising: Controlling the power assembly (11) to drive the drilling assembly (12) to rotate so as to drill below the formation; Controlling the slurry supply component (21) to supply slurry to the stirring component (22), so that the slurry enters the soil of the formation from the discharge port (22111) of the stirring component; Controlling the power assembly (11) to drive the drilling assembly (12) to rotate and move upward; The drilling assembly (12) is controlled to drive the stirring assembly (22) to rotate and stir, so that the slurry and soil are mixed.

26. The drilling method according to claim 25, characterized in that The controlling the slurry supply component (21) to supply slurry to the stirring component (22) so that the slurry enters the soil of the formation from the discharge port (22111) of the stirring component comprises: The slurry supply component (21) is controlled to convey the slurry to the first cavity (2212113), and the piston component (2212112) starts to move toward the third cavity (2212115) and drives the piston rod and the piston component (2212112) to move synchronously; Before the telescopic member (22121) is extended to a maximum length, the piston assembly (2212112) is controlled to move in the direction of the third cavity (2212115), the first overflow valve (2121) is connected to the second cavity (2212114), and the first overflow valve (2121) is in a closed state; When the telescopic member (22121) is extended to the maximum length, the piston assembly (2212112) stops moving, the first overflow valve (2121) is connected to the first cavity (2212113), the first overflow valve (2121) is in an open state, and the first overflow valve (2121) controls the slurry supply assembly (21) to be connected to the stirring assembly (22).

27. The drilling method according to claim 26, characterized in that: After controlling the drilling assembly (12) to drive the stirring assembly (22) to rotate and stir so that the slurry and soil are mixed, the method further comprises: The slurry supply component (21) is controlled to convey the slurry to the third cavity (2212115), the piston component (2212112) moves toward the first cavity (2212113) and drives the piston rod and the piston component (2212112) to move synchronously, the telescopic member (22121) is shortened, the first overflow valve (2121) is connected to the second cavity (2212114), the first overflow valve (2121) is switched to a closed state, and the first overflow valve (2121) controls the slurry supply component (21) to be disconnected from the stirring component (22).

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