Drilling equipment for underground water and soil remediation and treatment and remediation method

Abstract

The invention discloses drilling equipment for underground water and soil remediation and treatment and a remediation method, and belongs to the technical field of underground water and soil remediation and treatment. The drilling tool comprises a shell, a guide assembly and a flexible drilling rod. The flexible drill rod is used for drilling a branch well hole in the well wall; the guiding assembly comprises a guiding unit and a deflection driving unit, the guiding unit comprises a guiding frame body and a plurality of rollers, and the rollers are connected with the guiding frame body to form a guiding channel; the guide frame body is connected with the shell through a deflection driving unit, and the deflection driving unit can deflect the position of the guide frame body relative to the sliding hole; and the flexible drill rod is connected with the outside through the guide channel and the sliding hole in sequence. According to the method, a branch well hole channel used for injection and transmission of the remediation agent can be drilled in the well wall, the permeation and diffusion radius of the remediation agent is enlarged through a branch well hole, and therefore underground water and soil remediation treatment has higher production efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of groundwater and soil remediation and management, and in particular to a drilling device and a remediation method for groundwater and soil remediation and management. Background Art

[0002] The main in-situ remediation methods for soil and groundwater include injection wells, direct push, high-pressure rotary jetting, etc. The above methods usually involve drilling injection wells in the contaminated area, and then injecting chemical remediation agents into the injection wells to neutralize and degrade pollutants in the soil and groundwater.

[0003] However, no matter which of the above methods is adopted, there are problems such as small diffusion radius of chemical repair agents and low repair efficiency of a single well. Summary of the invention

[0004] In view of this, it is necessary to provide a drilling device and a repair method for groundwater and soil remediation and management, so as to solve the problem that the offset angle of the existing flexible drill rod cannot be adjusted.

[0005] In a first aspect, the present invention provides a drilling device for groundwater and soil remediation and treatment, comprising:

[0006] The outer shell is provided with a sliding hole communicating with the outside world;

[0007] Flexible drill pipe, used to drill branch wellbores on the well wall;

[0008] A guide assembly, wherein the guide assembly includes a guide unit and a deflection drive unit, wherein the guide unit includes a guide frame and a plurality of rollers, wherein the plurality of rollers are respectively connected to the guide frame to form a guide channel; the guide frame is connected to the outer shell through the deflection drive unit, and the deflection drive unit can deflect the position of the guide frame relative to the sliding hole; the flexible drill rod is connected to the outside world through the guide channel and the sliding hole in turn.

[0009] Furthermore, the deflection drive unit includes a support frame and a linear drive component, the support frame is fixedly connected to the inner wall of the outer shell, the guide frame is rotatably connected to the support frame, both ends of the linear drive component are respectively connected to the guide frame and the support frame, and the linear drive component can drive the guide frame to rotate relative to the rotation center.

[0010] Furthermore, the telescopic end of the linear drive member is rotatably connected to the guide frame body, and the connection point between the telescopic end of the linear drive member and the guide frame body is eccentrically arranged relative to the rotation center of the guide frame body.

[0011] Furthermore, the guide frame body also includes a central portion, which is rotatably connected to the support frame body, and the guide frame body is relatively hollowed out around the central portion to form an assembly cavity; multiple rollers are installed in the assembly cavity, and multiple rollers cooperate with the central portion to form a guide channel.

[0012] Furthermore, the central portion is provided with a groove arranged relative to the roller, and the groove is adapted to the flexible drill rod.

[0013] Furthermore, it also includes an angle monitoring component, which includes an arc plate slidably engaged with the support frame, a monitor and a rotation drive unit, the monitor is connected to the end of the arc plate and is arranged relative to the flexible drill rod in the guide channel to monitor the deflection angle of the flexible drill rod; the arc plate is transmission-connected to the support frame through the rotation drive unit, and the rotation drive unit can drive the arc plate to rotate relative to the guide unit to improve the detection accuracy of the monitor.

[0014] Furthermore, the rotation drive unit includes an arc-shaped ring gear and a rotating drive member, the arc-shaped ring gear is fixedly connected to the arc-shaped plate and cooperates with each other, the rotating drive member is fixedly connected to the support frame, the rotating drive member is connected to the arc-shaped ring gear through a gear, and the rotating drive member can drive the arc-shaped plate to rotate relative to the guide unit.

[0015] Furthermore, the monitor is a dynamic tilt sensor.

[0016] Furthermore, a drilling component is provided at one end of the flexible drill rod away from the housing, and the drilling component is a drill bit or an injection head.

[0017] In a second aspect, the present invention provides a method for groundwater and soil remediation, which uses the drilling equipment for groundwater and soil remediation, and the steps are as follows:

[0018] S1: Formation drilling: using a drilling rig to drill the formation to be treated and drill out the main well in the formation;

[0019] S2: branch drilling, sending the drilling equipment for groundwater and soil remediation into the main wellbore, and driving the flexible drill rod to pass through the guide channel and the sliding hole in sequence to drill a branch wellbore on the well wall;

[0020] S3: Injection of repair agents. The repair agent is input into the main wellbore through the pipeline. The repair agent penetrates and diffuses along the axial and radial directions of the branch wellbore.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] (1) A drilling device and a repair method for groundwater and soil remediation and treatment of the present invention are provided with a guide assembly, the guide assembly includes a guide unit and a deflection drive unit, the guide unit includes a guide frame and a plurality of rollers, and the plurality of rollers are respectively connected to the guide frame to form a guide channel. The flexible drill rod is connected to the outside through the guide channel and the sliding hole to form an effective drilling path. The guide frame is connected to the housing through the deflection drive unit, and the deflection drive unit drives the guide frame to deflect relative to the sliding hole of the housing, thereby changing the angle of the flexible drill rod. The deflection of the guide frame can adjust the contact angle between the flexible drill rod and the well wall, making it more flexible and avoiding the problem of uneven contact of the drill bit caused by excessive angle. The deflection drive unit can dynamically adjust the direction of the flexible drill rod to ensure that the flexible drill rod can always contact the formation at the optimal angle, thereby avoiding excessive wear, damage to the drill bit or low drilling efficiency. The guide assembly can make the branch wellbore more dispersed, further improve the diffusion efficiency of the repair agent, and improve the treatment efficiency.

[0023] (2) The drilling equipment and the repair method for groundwater and soil remediation of the present invention are provided with a flexible drill rod, which can drill branch wellbores on the well wall for the invasion of repair fluid. The branch wellbores expand the penetration and diffusion radius of the repair agent, thereby making the groundwater and soil remediation have higher production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0025] Figure 1 The overall structure of the present invention is shown in FIG. Figure 1 ;

[0026] Figure 2 The overall structure of the present invention is shown in FIG. Figure 2 ;

[0027] Figure 3 The overall structure of the present invention is shown in FIG. Figure 3 ;

[0028] Figure 4 It is a schematic diagram of the structure of the guide assembly in the present invention;

[0029] Figure 5 It is a structural schematic diagram of the guiding unit in the present invention;

[0030] Figure 6 is a schematic diagram of the structure of the angle monitoring component in the present invention;

[0031] Figure 7It is a structural schematic diagram of the curved plate in the present invention;

[0032] Figure 8 It is a flow chart of the repair method in the present invention.

[0033] In the figure, 100, housing; 110, sliding hole;

[0034] 200, guide assembly; 210, guide unit; 211, guide frame; 211a, center portion; 212, roller; 220, deflection drive unit; 221, support frame; 222, linear drive member;

[0035] 300, flexible drill rod; 310, drilling piece;

[0036] 400, angle monitoring assembly; 410, arc plate; 411, sliding slot; 420, monitor; 430, rotation drive unit; 431, arc gear ring; 432, rotation drive member. DETAILED DESCRIPTION

[0037] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0038] In this embodiment, a drilling device and a repair method for groundwater and soil remediation are used. A flexible drill rod 300 is used to open a branch wellbore in the wall of the injection well, providing a larger penetration and diffusion radius of the repair agent, so that the groundwater and soil remediation has a higher production efficiency. In addition, by setting a guide assembly 200 between the flexible drill rod 300 and the housing 100, the angle of the flexible drill rod 300 relative to the formation is adjusted, the wear of the end of the flexible drill rod 300 is alleviated, and the unused flexible drill rods 300 are prevented from interfering with each other, so that the branch wellbore is more dispersed, further improving the diffusion efficiency of the repair agent and improving the treatment efficiency.

[0039] See also Figures 1 to 7 In this embodiment, a drilling device and a method for groundwater and soil remediation and treatment include: a housing 100, a guide assembly 200, and a flexible drill rod 300. The housing 100 can move along the main well to protect the internal equipment. The flexible drill rod 300 can drill a branch wellbore on the well wall for the invasion of the repair fluid. The guide assembly 200 can pull the flexible drill rod 300 to deviate relatively and adjust the angle of the flexible drill rod 300 relative to the formation.

[0040] The housing 100 is the main supporting structure of the drilling equipment, and the sliding hole 110 is the feed channel of the flexible drill rod 300. The sliding hole 110 is connected to the outside world, so that the flexible drill rod 300 can freely enter and exit the wellbore. The sliding hole 110 provides a standardized channel for the flexible drill rod 300, through which the flexible drill rod 300 can enter the drilling path and operate. The flexible drill rod 300 can drill branch wellbores on the well wall for the invasion of repair fluids. The branch wellbores expand the penetration and diffusion radius of the repair agent, thereby making the groundwater and soil remediation and management more efficient.

[0041] The guide assembly 200 includes a guide unit 210 and a deflection drive unit 220. The guide unit 210 includes a guide frame 211 and a plurality of rollers 212. The plurality of rollers 212 are respectively connected to the guide frame 211 to form a guide channel. The flexible drill rod 300 is connected to the outside through the guide channel and the sliding hole 110 to form an effective drilling path. The guide frame 211 is connected to the housing 100 through the deflection drive unit 220. The deflection drive unit 220 drives the guide frame 211 to deflect relative to the sliding hole 110 of the housing 100, thereby changing the angle of the flexible drill rod 300. The deflection of the guide frame 211 can adjust the contact angle between the flexible drill rod 300 and the well wall, making it more flexible and avoiding the problem of uneven contact of the drill bit caused by too large an angle. The deflection drive unit 220 can dynamically adjust the direction of the flexible drill rod 300 to ensure that the flexible drill rod 300 can always contact the formation at the best angle, thereby avoiding excessive wear, damage to the drill bit or low drilling efficiency. The guide assembly 200 can make the branch wellbore more dispersed, further improve the diffusion efficiency of the repair agent, and improve the treatment efficiency.

[0042] In some embodiments, see Figure 4 and Figure 5 The deflection drive unit 220 includes a support frame 221 and a linear drive member 222. The support frame 221 is fixedly connected to the inner wall of the housing 100. The support frame 221 serves as a connection support base and can provide a stable support for the guide unit 210. The guide frame 211 is rotatably connected to the support frame 221. The two ends of the linear drive member 222 are respectively connected to the guide frame 211 and the support frame 221. The linear drive member 222 can be relatively retracted to drive the guide frame 211 to rotate, thereby adjusting the feed angle of the flexible drill rod 300. The action of the linear drive member 222 realizes the precise control of the guide frame 211, so that the flexible drill rod 300 can flexibly adjust its angle in different drilling environments. Through precise angle adjustment, the situation where the flexible drill rod 300 contacts the well wall unevenly is avoided, thereby effectively improving the drilling efficiency, reducing the wear of the drill bit, and improving the stability of the drilling operation.

[0043] It should be noted that one section of the flexible drill rod 300 is arranged along the axial direction of the housing 100, and the other section of the flexible drill rod 300 passes through the guide assembly 200 and the sliding hole 110 to drill a branch wellbore on the main well. Under the traction of the guide assembly 200, the flexible drill rod 300 can move relatively within the plane formed by the axis of the housing 100 and the sliding hole 110.

[0044] In some embodiments, see Figure 4 The telescopic end of the linear drive member 222 is rotatably connected to the guide frame body 211. The connection point between the telescopic end of the linear drive member 222 and the guide frame body 211 is eccentrically arranged relative to the rotation center of the guide frame body 211. The telescopic action of the linear drive member 222 will generate a driving torque, which causes the guide frame body 211 to rotate around the rotation center. The torque generated by the eccentric setting can not only drive the guide frame body 211 to rotate, but also accurately adjust the feed angle of the flexible drill rod 300.

[0045] Precise control of the feeding angle of the flexible drill rod 300 can effectively avoid the phenomenon of uneven contact between the flexible drill rod 300 and the well wall, ensuring that the contact between the drill bit and the formation always maintains an optimal angle, thereby improving the drilling efficiency and the service life of the drill bit.

[0046] In the specific implementation process, the linear drive member 222 is specifically an electric push rod, and a connecting rod is further provided between the linear drive member 222 and the guide frame 211, and the two ends of the connecting rod are respectively hinged to the linear drive member 222 and the guide frame 211. The linear drive member 222, the connecting rod and the guide frame 211 form a crank slider mechanism, which can drive the guide frame 211 to rotate relative to the support frame 221 to achieve angle adjustment of the flexible drill rod 300.

[0047] In some embodiments, see Figure 5 The guide frame 211 also includes a central portion 211a, which is integrally connected to the main body of the guide frame 211. The guide frame 211 is relatively hollowed out around the central portion 211a to form an assembly cavity, and a plurality of rollers 212 are installed in the assembly cavity. The plurality of rollers 212 cooperate with the central portion 211a to form a guide channel. In the assembly cavity, the plurality of rollers 212 can coordinate to ensure the smooth feeding of the flexible drill rod 300. The arrangement of the plurality of rollers 212 in the assembly cavity can help the guide frame 211 to guide the flexible drill rod 300 to move along a predetermined path smoothly and without resistance.

[0048] The guide frame 211 is rotatably arranged around the central portion 211a, and the rotatable connection between the central portion 211a and the support frame 221 enables the guide frame 211 to flexibly adjust the angle and position relative to the support frame 221. In this assembly cavity, multiple rollers 212 can work in coordination to ensure the smooth feeding of the flexible drill rod 300. The arrangement of multiple rollers 212 in the assembly cavity can help the guide frame 211 to guide the flexible drill rod 300 to move along a predetermined path smoothly and without resistance.

[0049] During use, when the deflection drive unit 220 drives the linear drive member 222 to move, the guide frame 211 rotates around the central portion 211a, and the roller 212 changes the path of the guide channel to accurately adjust the angle of the flexible drill rod 300. The structural setting of the guide channel can make the feeding path of the flexible drill rod 300 highly controllable, especially in complex drilling operations.

[0050] As a further implementation, see Figure 5 The center portion 211a is provided with a groove arranged relative to the roller 212, and the cross section of the groove is semicircular, and the groove can be adapted to the flexible drill rod 300 and maintain a good fit with the flexible probe rod. The groove can also cooperate with the roller 212 to form a nearly circular guide channel, which is convenient for the offset and traction of the flexible probe rod.

[0051] In some embodiments, see Figure 6 , a drilling device for groundwater and soil remediation and management, also includes an angle monitoring component 400, which can accurately monitor the deflection angle of the guide frame 211 and assist the computer in feedback adjustment.

[0052] The angle monitoring assembly 400 includes an arc plate 410 slidably engaged with the support frame 221, a monitor 420 and a rotation drive unit 430. The monitor 420 is connected to the end of the arc plate 410 and is arranged relative to the flexible drill rod 300 located in the guide channel. The monitor 420 can monitor the deflection angle of the flexible drill rod 300 in real time to achieve precise control of the flexible drill rod 300.

[0053] The arc plate 410 is connected to the support frame 221 through the rotation drive unit 430, and the rotation drive unit 430 can drive the arc plate 410 to rotate relative to the guide unit 210. The arc plate 410 is connected to the support frame 221 through the rotation drive unit 430 and can rotate with the movement of the support frame 221. The monitor 420 is connected to the end of the arc plate 410 to detect the deflection angle of the flexible drill rod 300 in real time. The rotation drive unit 430 can drive the arc plate 410 to rotate relative to the guide unit 210, thereby optimizing the position and angle of the monitor 420 and improving the accurate monitoring of the deflection of the flexible drill rod 300.

[0054] By continuously adjusting the angle of the curved plate 410, the monitor 420 can detect the flexible drill rod 300 at the best angle, significantly improving the monitoring accuracy of the deflection angle. This adjustment mode can ensure real-time monitoring of the flexible drill rod 300 and accurately grasp the movement state of the flexible drill rod 300, thereby avoiding problems such as drill bit wear and inaccurate drilling path caused by incorrect angles.

[0055] See also Figure 6 and Figure 7 In the specific implementation process, a sliding slot 411 is provided in the middle of the arc plate 410, and the sliding slot 411 is extended along the arc track of the arc plate 410. The support frame 221 is slidably connected in the sliding slot 411, and the arc plate 410 can move along the sliding slot 411 relative to the support frame 221. The sliding slot 411 can limit the moving track of the arc plate 410, ensuring that the monitor 420 always rotates around the center of the flexible drill rod 300 or the guide frame 211, maintains the relative position and angle with the flexible drill rod 300 or the guide frame 211, and performs accurate deflection angle measurement.

[0056] The sliding slot 411 allows the arc plate 410 to always remain stable during the movement relative to the support frame 221. The precise fit between the support frame 221 and the sliding slot 411 reduces the looseness or unstable movement between the arc plate 410 and the support frame 221, ensuring that the arc plate 410 moves smoothly and evenly along the track without violent swinging or irregular movement.

[0057] In some embodiments, see Figure 6 The rotation driving unit 430 includes an arc-shaped gear ring 431 and a rotation driving member 432. The arc-shaped gear ring 431 is fixedly connected to the arc-shaped plate 410. The bending curvature of the arc-shaped gear ring 431 is completely consistent with the bending curvature of the arc-shaped plate 410. The arc-shaped gear ring 431 is fixedly connected to one side of the arc-shaped plate 410, so that the arc-shaped gear ring 431 and the arc-shaped plate 410 have rotation consistency, and the two can rotate completely synchronously.

[0058] The rotating driving member 432 is connected to the arc-shaped ring gear 431 through gears. When the rotating driving member 432 is started, the rotating driving member 432 can drive the arc-shaped ring gear 431 to rotate through the precise meshing of the gears, thereby driving the arc-shaped plate 410 to rotate accurately relative to the guide unit 210. The gear transmission system has high transmission accuracy and stability, ensuring that the arc-shaped plate 410 can rotate smoothly on a predetermined track.

[0059] In some embodiments, the monitor 420 is a dynamic tilt sensor, which measures the angle deviation between the curved plate 410 and the flexible drill pipe 300 to reflect the tilt or deflection of the flexible drill pipe 300 in real time during the drilling process. Different from a static sensor, a dynamic tilt sensor can provide real-time data feedback based on the dynamically changing angle during the drilling process, and accurately monitor every change in the drilling process.

[0060] With the help of the dynamic inclination sensor, the system can obtain the precise inclination or deflection angle of the flexible drill pipe 300 in real time during the drilling process, thereby effectively preventing equipment damage or reduced drilling efficiency caused by uneven drill bit contact or deviation from the target path. Its high-frequency response capability enables instant adjustment of drilling operations to ensure operation accuracy and stability.

[0061] In some embodiments, see Figures 1 to 3 The end of the flexible drill pipe 300 away from the housing 100 is provided with a drilling member 310, which can effectively break the formation, quickly open up the layer in the target layer, and form a branch wellbore for fluid penetration. The branch wellbore can be extended relative to the surrounding of the main wellbore, expanding the influence range of the pumping and injection amplification radius and improving the efficiency of the repair fluid.

[0062] In the specific implementation process, when facing hard formations, the drilling component 310 uses a drill bit, which can perform traditional mechanical drilling and can efficiently cut and break the formation. In hard formations, the drill bit effectively breaks the formation through rotation and cutting, and quickly creates a branch wellbore. When facing loose porous media or formations such as carbonate rocks and limestones, the drilling component 310 uses an injection head, which dissolves the minerals in the formation by high-pressure injection or injection of acid chemical reactions. It is particularly suitable for muddy silt fine sand formations and dissolved carbonate rocks and sandstones, etc., to help form smoother branch wellbores.

[0063] See also Figure 8 A method for groundwater and soil remediation and management, using a drilling device for groundwater and soil remediation and management, the steps are as follows:

[0064] S1: Stratum Drilling

[0065] Preparation

[0066] Before drilling begins, detailed exploration work is required, including geological surveys, groundwater flow conditions, assessment of soil contamination levels, etc. These data provide necessary guidance for subsequent drilling operations.

[0067] Select drilling equipment

[0068] Choose appropriate drilling equipment according to the specific properties of soil and groundwater.

[0069] Drilling operations

[0070] Use the drilling rig to start drilling the main well. First, drill a vertical well to reach the target depth. The depth of the main well is determined according to the pollution range and treatment requirements of the repair area. During the drilling process, the equipment will conduct real-time monitoring to ensure that the wellbore is stable and does not collapse.

[0071] Real-time monitoring and adjustment

[0072] During the drilling process, the stability of the wellbore, the depth of drilling, the wear of the drill bit, etc. are continuously monitored. For weak layers or complex formations, it may be necessary to adjust the drilling parameters, such as feed speed, drill bit type, etc.

[0073] Completed main shaft drilling

[0074] When the main well is drilled to the specified depth, the drilling operation is completed. At this time, the main well is ready for access to repair agents and can enter the preparation stage for subsequent branch drilling operations.

[0075] S2: Branch drilling

[0076] Equipment enters the main shaft

[0077] After the main shaft is completed, a groundwater and soil remediation drilling device is sent into the main shaft. The drilling device can perform branch drilling tasks in the main shaft.

[0078] The guide assembly in the start-up device includes a roller guide unit and a deflection drive unit. The deflection drive unit controls the angle of the guide frame. Through deflection, the flexible drill pipe can change direction to enter different positions and drill branch wells. In this way, multiple branch channels can be drilled at different depths and different positions in the main well, forming a network similar to a fishbone structure, thereby covering a wider repair area.

[0079] Flexible drill rod passing through the guide channel

[0080] The flexible drill pipe gradually enters the well wall through the guide channel, and the rotation and feed of the drill bit push the drill pipe to drill in different directions. The guide frame can guide the flexible drill pipe to drill branch channels according to the set direction. The direction, angle, number and depth of these branch channels can be adjusted according to the specific situation of pollution distribution.

[0081] Branch well drilling completed

[0082] The drilling depth, inclination angle and spacing of each branch wellbore can be precisely controlled according to the repair requirements. When one branch wellbore is completed, the equipment can continue to drill the next branch wellbore until all required branch wells are completed.

[0083] Branch wellbore layout

[0084] When drilling branch wells, high-precision variable-direction feeding technology is used, which can flexibly adjust the orientation and depth of branch holes according to changes in the pollution range to ensure that the pollution source can be fully covered. Through multi-point branching, the diffusion surface of the repair agent can be effectively increased, improving the repair effect.

[0085] S3: Injection repair

[0086] Prepare repair potion materials

[0087] According to the pollution characteristics of soil and groundwater, suitable remediation agent materials are prepared. The types of remediation agents can be physical remediation agents (such as injection of foam or gas), chemical remediation agents (such as oxidants, reductants or adsorbents), biological remediation agents (such as microbial culture fluids), etc. The specific selection depends on the type of pollutants and the remediation requirements.

[0088] Injection of repair agent

[0089] The repair agent material is transported to the main well through a dedicated pipeline, and the repair agent is usually injected into the bottom of the main well or the location of multiple branch wells. Due to the branch structure of the equipment, the repair agent can be injected into the groundwater and soil through multiple branch wells at the same time to maximize the coverage of the pollution source area.

[0090] Diffusion and penetration of pharmaceutical materials

[0091] The injected remediation agent diffuses in the branch wellbore and permeates into the surrounding soil and groundwater, expanding the penetration and diffusion radius of the remediation agent, thereby making the groundwater and soil remediation more efficient. In this process, the remediation agent reacts with pollutants in the soil or groundwater, converting the pollutants into harmless substances, or removing pollutants through physical, chemical or biological processes.

[0092] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed in the present invention should be covered by the present invention.

Claims

1. A drilling device and a repair method for groundwater and soil remediation, characterized in that: include: The outer shell is provided with a sliding hole communicating with the outside world; Flexible drill pipe, used to drill branch wellbores on the well wall; A guide assembly, wherein the guide assembly includes a guide unit and a deflection drive unit, wherein the guide unit includes a guide frame and a plurality of rollers, wherein the plurality of rollers are respectively connected to the guide frame to form a guide channel; the guide frame is connected to the outer shell through the deflection drive unit, and the deflection drive unit can deflect the position of the guide frame relative to the sliding hole; the flexible drill rod is connected to the outside world through the guide channel and the sliding hole in turn.

2. A drilling device and a method for groundwater and soil remediation according to claim 1, characterized in that: The deflection drive unit includes a support frame and a linear drive component. The support frame is fixedly connected to the inner wall of the outer shell, the guide frame is rotatably connected to the support frame, and both ends of the linear drive component are respectively connected to the guide frame and the support frame. The linear drive component can drive the guide frame to rotate relative to the rotation center.

3. A drilling device and a method for groundwater and soil remediation according to claim 2, characterized in that: The telescopic end of the linear drive member is rotatably connected to the guide frame body, and the connection point between the telescopic end of the linear drive member and the guide frame body is eccentrically arranged relative to the rotation center of the guide frame body.

4. A drilling device and a method for groundwater and soil remediation according to claim 3, characterized in that: The guide frame body also includes a central portion, which is rotatably connected to the support frame body. The guide frame body is relatively hollowed out around the central portion to form an assembly cavity; multiple rollers are installed in the assembly cavity, and multiple rollers cooperate with the central portion to form a guide channel.

5. A drilling device and a method for groundwater and soil remediation according to claim 4, characterized in that: The central portion is provided with a groove arranged opposite to the roller, and the groove is adapted to the flexible drill rod.

6. The drilling equipment and repair method for groundwater and soil remediation according to claim 2, characterized in that: It also includes an angle monitoring component, which includes an arc plate slidably engaged with the support frame, a monitor and a rotation drive unit, the monitor is connected to the end of the arc plate and is arranged relative to the flexible drill rod in the guide channel to monitor the deflection angle of the flexible drill rod; the arc plate is transmission-connected to the support frame through the rotation drive unit, and the rotation drive unit can drive the arc plate to rotate relative to the guide unit to improve the detection accuracy of the monitor.

7. The drilling equipment and method for groundwater and soil remediation according to claim 6, characterized in that: The rotary drive unit includes an arc-shaped gear ring and a rotating drive member. The arc-shaped gear ring is fixedly connected to the arc-shaped plate and cooperates with each other. The rotating drive member is fixedly connected to the support frame. The rotating drive member is connected to the arc-shaped gear ring through a gear. The rotating drive member can drive the arc-shaped plate to rotate relative to the guide unit.

8. The drilling equipment and method for groundwater and soil remediation according to claim 7, characterized in that: The monitor is a dynamic tilt sensor.

9. The drilling equipment and method for groundwater and soil remediation according to claim 1, characterized in that: A drilling component is provided at one end of the flexible drill rod away from the shell, and the drilling component is a drill bit or a jet head.

10. A method for groundwater and soil remediation and management, characterized in that: A drilling device for groundwater and soil remediation as described in any one of claims 1 to 9 is used, and the steps are as follows: S1: Formation drilling: using a drilling rig to drill the formation to be treated and drill out the main well in the formation; S2: branch drilling, sending the drilling equipment for groundwater and soil remediation into the main wellbore, and driving the flexible drill rod to pass through the guide channel and the sliding hole in sequence to drill a branch wellbore on the well wall; S3: Injection of repair agents. The repair agent is input into the main wellbore through the pipeline. The repair agent penetrates and diffuses along the axial and radial directions of the branch wellbore.

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