Inclined recyclable bladder grouting device for controlling soil deformation and construction method

Abstract

The present invention discloses an inclined recyclable bladder grouting device and construction method for controlling soil deformation. The device comprises an inner tube group, wherein the inner tube group comprises at least a bottom tube located at the bottom and hollow, and a plurality of hollow connecting tubes. A first slot is provided on the circumference of the top surface of the bottom tube and the connecting tube, and a first plug-in is provided on the circumference of the bottom surface of the connecting tube. The first plug-in is plugged into the adjacent first slot so that the bottom tube and the plurality of connecting tubes are connected in series. An outer tube is sleeved on the inner tube group, and the outer wall of the outer tube is symmetrically provided with a plurality of groups of bladder bags, a connector, and a disc structure. A second plug-in is provided on the circumference of the connector head. The second plug-in is plugged into the first slot on the top surface of the topmost connecting tube so that the connector head is snap-connected with the inner tube group. A magnetic component is also provided on the connector head, and a connecting component is also provided in the inner wall of the outer tube. The magnetic component and the connecting component are magnetically matched. The present invention includes that the bottom tube and the plurality of connecting tubes can be combined and connected in series, thereby extending their length and increasing flexibility.

Description

Technical Field

[0001] The invention relates to the technical field of grouting devices, in particular to an inclined recyclable bag-type grouting device for controlling soil deformation and a construction method. Background Art

[0002] With the accelerating pace of modern urban construction, a large number of deep foundation pits have emerged in urban environments, located adjacent to existing underground structures. The environmental impacts of deep foundation pit construction need to be strictly controlled. During excavation, soil unloading causes the surrounding soil to move toward the pit, inducing lateral displacement of the retaining structure. This also causes adjacent building foundations or tunnels outside the pit to move along with the soil. Therefore, deformation caused by foundation pit construction in dense urban environments needs to be strictly controlled.

[0003] Usually, in order to ensure the stability of the foundation pit, it is necessary to grout the foundation pit. Grouting, also known as grouting, is a construction technology that uses hydraulic, air pressure or electrochemical methods to inject gelling slurry or chemical solution into the stratum or gap through a grouting pipe. Its essence is to allow the slurry to penetrate, diffuse and fill the injected layer, and solidify and harden after a certain period of time, so as to achieve the purpose of strengthening the stratum and preventing seepage and waterproofing.

[0004] Currently, grouting pipes, particularly those used in engineering applications, are typically fabricated from steel pipes. These pipes are typically formed in one piece, making them difficult to adapt to varying depths. Consequently, multiple models of grouting pipes are required, resulting in significant cost. Traditional grouting pipes inject grout directly into the grouting holes, failing to form a continuous, dense grouting mass and providing little support for the foundation's bearing capacity and stability. Traditional vertical bladder grouting devices generate horizontal forces during the grouting process, further exacerbating the lateral displacement of the retaining structure. Furthermore, traditional vertical bladder grouting devices are unable to effectively control the subsidence of existing underground structures that have already settled. Summary of the Invention

[0005] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract and title of this application to avoid obscuring the purpose of this section, the abstract and the title of the invention, and such simplifications or omissions should not be used to limit the scope of the present invention.

[0006] In view of the problems existing in the prior art, the present invention is proposed.

[0007] Therefore, the technical problem to be solved by the present invention is that the grouting pipes in the prior art are usually formed in one piece, which is difficult to adapt to the diversity of different depths. Therefore, it is necessary to prepare multiple models of grouting pipes, which results in a large cost loss. In addition, the traditional grouting pipes use grouting holes to directly spray grouting, which cannot form a continuous and dense grouting body, and have little auxiliary effect on the bearing capacity and stability of the foundation; the traditional grouting pipes use grouting holes to directly spray grouting, which cannot form a continuous and dense grouting body, and have little auxiliary effect on the bearing capacity and stability of the foundation; the traditional vertical bladder grouting device generates horizontal force during the grouting process, which will further aggravate the impact on the lateral displacement of the retaining structure; the traditional vertical bladder grouting device cannot effectively control the settlement of existing underground structures that have already settled, or effectively control the lifting of existing underground structures (tunnels, etc.) that are adjacent to settlement.

[0008] To solve the above technical problems, the present invention provides the following technical solutions: an inclined recyclable bladder grouting device for controlling soil deformation, comprising an inner tube group, the inner tube group comprising at least a bottom tube located at the bottom and hollow and a plurality of hollow connecting tubes, the bottom tube and the connecting tubes being coaxially butted together in sequence, a first slot being provided on the circumference of the top surface of the bottom tube and the connecting tube, a first plug-in being provided on the circumference of the bottom surface of the connecting tube, the first plug-in being mated with an adjacent butted first slot so that the bottom tube and the plurality of connecting tubes are connected in series, and a pipe cap for connecting an external grouting machine being provided on the top of the tube body of the topmost connecting tube;

[0009] A pair of symmetrical grouting heads are provided on the bottom pipe and the multiple connecting pipes, and the grouting heads are connected to the interior;

[0010] The outer tube is provided with a circular accommodation space recessed from one end, the outer tube is sleeved on the inner tube group, and the bottom tube and multiple connecting tubes are serially connected and accommodated in the accommodation space. The outer wall of the outer tube is provided with a pair of symmetrical grouting holes, which correspond to and are connected to the grouting head. The outer wall of the outer tube is also symmetrically provided with multiple groups of bladder bags, and the internal space of each bladder bag corresponds to a corresponding grouting hole. Flexible adhesive tapes for reinforcement are provided on the upper and lower ends of the bladder bag and are fixed around the outer ends of the upper and lower ends of the bladder bag;

[0011] The connector is a disc-shaped structure, and a second plug is provided on the circumference of the connector. The second plug is plugged into the first slot on the top surface of the topmost connecting tube among the multiple connecting tubes so that the connector is engaged and connected with the inner tube assembly;

[0012] The connector is also provided with a magnetic component, and the inner wall of the outer tube is also provided with a connecting component. The magnetic component and the connecting component cooperate magnetically to ensure magnetic connection between the connector and the outer tube.

[0013] As a preferred embodiment of the inclined recyclable bladder grouting device for controlling soil deformation according to the present invention, the first slot on the connecting pipe is formed by being recessed from the top surface of the connecting pipe and arranged along the circumference of the outer wall of the connecting pipe, and the first slot on the bottom pipe is formed by being recessed from the top surface of the bottom pipe and arranged along the circumference of the outer wall of the bottom pipe;

[0014] The two end walls in the first slot are recessed to form a square groove, a clamping block is provided in the square groove, the clamping block is connected to the square groove through a first spring, and the top surface of the clamping block extending out of the square groove is provided with an arc-shaped slope.

[0015] As a preferred embodiment of the inclined recyclable bladder grouting device for controlling soil deformation according to the present invention, the first plug-in has a shaped structure, including a vertically arranged connecting portion and a horizontal block arranged perpendicular to the connecting portion, and a clamping space is provided between the horizontal block and the bottom wall of the connecting pipe, and the size of the clamping space matches that of the clamping block;

[0016] The first plug-in corresponds to the first slot. When the first plug-in is inserted into the first slot, it abuts the arc-shaped slope of the card block and drives the card blocks away from each other and compresses the first spring. After the first plug-in is located in the first slot, the card block extends into the engagement space and engages the first plug-in.

[0017] As a preferred solution of the inclined recyclable bladder grouting device for controlling soil deformation described in the present invention, the structure of the second plug-in is the same as that of the first plug-in, and the cooperation method between the second plug-in and the first slot of the topmost connecting pipe is the same as the cooperation method between the first plug-in and the first slot.

[0018] As a preferred solution of the inclined recyclable bladder grouting device for controlling soil deformation described in the present invention, vertical groove channels are symmetrically arranged on the inner wall of the outer tube and pass through the top. The vertical groove channels are used for the passage of the grouting head when the bottom tube and the connecting tube extend into the outer tube. The grouting holes are opened in the vertical groove channels and pass through the outer wall of the outer tube.

[0019] As a preferred embodiment of the inclined recyclable bladder grouting device for controlling soil deformation according to the present invention, the grouting hole penetrates the outer wall of the outer tube and is surrounded by a bottom surface, a top surface, a first side surface, and a second side surface opposite to the first side surface;

[0020] An accommodating channel is further provided on one side of the vertical groove channel, the connecting component is installed in the accommodating channel, and the accommodating channel passes through the first side surface and is communicated with the grouting hole;

[0021] A receiving groove is further provided on the side where the second side surface is located. The receiving groove is connected to the grouting hole through the second side surface, and a baffle is provided in the receiving groove;

[0022] A first magnetic sheet is provided on the side of the baffle facing the connecting component, and a magnetic attraction sheet that attracts the first magnetic sheet and a repulsion sheet that repels the first magnetic sheet are provided on the side of the connecting component facing the baffle. The displacement of the connecting component in the accommodating channel drives the first magnetic sheet to move out of the accommodating groove or move into the accommodating groove from the grouting hole.

[0023] As a preferred embodiment of the inclined recyclable bladder grouting device for controlling soil deformation according to the present invention, the connecting member is in the form of an elongated plate, the bottom of which is connected to the bottom of the accommodating channel via a second spring, and the top of which is connected to a magnetic sphere via a third spring, wherein the magnetic sphere is magnetically engaged with the magnetic member;

[0024] The bottom surface of the connector is provided with an arc-shaped groove, and the magnetic component includes an electromagnet, which is embedded in the arc-shaped groove. The electromagnet is configured to generate magnetism when energized to attract a magnetic sphere, and the magnetic sphere is attracted and embedded in the arc-shaped groove to connect the connecting component to the connector;

[0025] The diameter of the magnetic sphere is greater than the length of the opening of the accommodating channel.

[0026] As a preferred embodiment of the inclined recyclable bladder grouting device for controlling soil deformation according to the present invention, a protrusion is provided on one side of the connecting component, and two recessed grooves are provided on the side wall of the accommodating channel. When the connecting component moves in the accommodating channel, the protrusion cooperates with the two recessed grooves respectively.

[0027] The two recessed grooves are arranged up and down. When the magnetic sphere is attracted and embedded in the arc-shaped groove, the protrusion engages with the upper recessed groove, and the repulsive piece repels the first magnetic piece. When the magnetic sphere and the electromagnet are released from attraction, the protrusion engages with the lower recessed groove, and the suction piece attracts the first magnetic piece.

[0028] As a preferred solution of the inclined recyclable bladder grouting device for controlling soil deformation of the present invention, a solenoid valve is provided at the bottom opening of the connecting pipe, and the multiple connecting pipes and the bottom pipe are connected through the solenoid valve.

[0029] The present invention also provides the following technical solution: a construction method, which includes drawing a pile position layout diagram according to design requirements and determining the drilling position and depth;

[0030] A drilling machine is used to drill a hole at an angle to a designed hole depth, wherein the hole is protected by mud to prevent the hole from collapsing, and the hole drilled by the drilling machine is in an inclined state;

[0031] Install the inclined recyclable bladder grouting device for controlling soil deformation as described in any of the above items and drive it into the drill hole in an inclined state;

[0032] Grouting the capsule grouting device by setting grouting parameters through a grouting machine, wherein the grouting parameters include grouting pressure, grouting time, and grouting volume;

[0033] After the injection is completed, the magnetic component of the bladder grouting device is powered off to release the connection between the outer tube and the connector, and the connector and the inner tube assembly are recovered.

[0034] The beneficial effects of the present invention are as follows: the present invention includes a bottom pipe and multiple connecting pipes that can be combined and connected in series, thereby extending its length, and can be matched with outer pipes of different lengths to adapt to different requirements during grouting, and its flexibility is higher; the present invention also symmetrically arranges multiple groups of bags on the outer wall of the outer pipe, and slurry is injected into the bags to form a solid body. The bags can adapt to complex boundary shapes and form a good combination with the surrounding strata, which can significantly improve the bearing capacity and stability of the foundation, extend its service life, and also have higher strength and density, and can resist various external loads and deformations; the inner pipe group can be disassembled from the outer pipe for recycling, with high utilization rate and more cost savings. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be derived from these drawings without inventive effort. Among them:

[0036] Figure 1 Schematic diagram of the overall structure of the bladder grouting device in the first embodiment.

[0037] Figure 2 Schematic diagram of the structure of the pouch in the first embodiment.

[0038] Figure 3 Schematic diagram of the structure of the outer tube in the first embodiment.

[0039] Figure 4 Schematic diagram of the matching between the connecting pipe and the connecting head in the first embodiment.

[0040] Figure 5 Schematic diagram of the repulsive fit between the connecting component and the baffle in the first embodiment.

[0041] Figure 6 Schematic diagram of the attraction and cooperation between the connecting component and the baffle in the first embodiment.

[0042] Figure 7 It is a schematic cross-sectional structure diagram of the inner tube group, connector, and outer tube in the first embodiment.

[0043] Figure 82 is a top cross-sectional view of the outer tube in the first embodiment.

[0044] Figure 9 Schematic diagram of the construction environment in the second embodiment. DETAILED DESCRIPTION

[0045] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0046] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0047] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive of other embodiments.

[0048] Example 1

[0049] Reference Figures 1 to 8 , which is the first embodiment of the present invention, provides an inclined recyclable bladder grouting device and a construction method for controlling soil deformation. The bladder grouting device is used to inject slurry into the ground of a foundation pit to reinforce the foundation pit, specifically comprising:

[0050] The inner tube group 1 includes at least a hollow bottom tube 11 located at the bottom and a plurality of hollow connecting tubes 12. The bottom tube 11 and the connecting tube 12 are coaxially connected in sequence. A first slot A is provided on the top circumference of the bottom tube 11 and the connecting tube 12, and a first plug-in B is provided on the bottom circumference of the connecting tube 12. The first plug-in B cooperates with the adjacent docking first slot A to connect the bottom tube 11 and the plurality of connecting tubes 12 in series. The top of the tube body of the topmost connecting tube 12 is provided with a pipe cap for an external grouting machine; the pipe cap is used to connect with the grouting machine so that the grouting machine can inject slurry into the inner tube group 1.

[0051] Hollow can be understood as the bottom tube 11 and the connecting tube 12 having both ends penetrated to form a through cavity to facilitate the circulation of slurry.

[0052] A pair of symmetrical grouting heads 4 are provided on the bottom pipe 11 and the plurality of connecting pipes 12 . The grouting heads 4 are communicated with the interior; the slurry is injected out through the grouting heads 4 .

[0053] The outer tube 2 is provided with a circular accommodating space 21 recessed from one end. The outer tube 2 is sleeved on the inner tube group 1. The bottom tube 11 and multiple connecting tubes 12 are serially accommodated in the accommodating space 21. The outer wall of the outer tube 2 is provided with a pair of symmetrical grouting holes 23. The grouting holes 23 correspond to and are connected to the grouting head 4. The outer wall of the outer tube 2 is also symmetrically provided with multiple groups of bladder bags 24. The internal space of each bladder bag 24 corresponds to a corresponding grouting hole 23. Flexible adhesive tapes for reinforcement are provided on the upper and lower ends of the bladder bag 24 and are fixed around the upper and lower ends of the bladder bag 24.

[0054] Furthermore, a tapered drill bit is provided at the bottom of the outer tube 2. The bottom tube 11 and multiple connecting tubes 12 are coaxially connected and arranged in series within the accommodating space 21. Slurry is injected through the grouting head 4 and then ejected through the grouting holes 23. When the bladder grouting device is buried underground, the slurry is ejected through the grouting holes 23 and into the bladder bag 24.

[0055] Two grouting heads 4 are provided on a bottom pipe 11, and two grouting heads 4 are provided on a connecting pipe 12. The number of bags 24 provided on the outer pipe 2 corresponds to the number of grouting holes 23. The slurry is ejected from each grouting hole 23 and enters a corresponding bag 24. The bag 24 expands, and the slurry forms a solid in the bag 24, which plays a role in consolidating the foundation pit underground.

[0056] The connector 3 is a disc-shaped structure. A second plug C is provided on the circumference of the connector 3. The second plug C is plugged into the first slot A on the top surface of the topmost connecting tube 12 among the multiple connecting tubes 12 so that the connector 3 is engaged and connected with the inner tube assembly 1.

[0057] A magnetic component is further provided on the connector 3 , and a connecting component 22 is further provided in the inner wall of the outer tube 2 . The magnetic component and the connecting component 22 cooperate magnetically to enable the connector 3 to be magnetically connected to the outer tube 2 .

[0058] The second plug C is connected to the topmost connecting tube 12 among the connecting tubes 12 , and the magnetic component is connected to the outer tube 2 , so that the outer tube 2 and the inner tube group 1 are relatively fixedly connected through the connector 3 .

[0059] Furthermore, the first slot A on the connecting tube 12 is recessed from the top surface of the connecting tube 12 and arranged along the outer circumference of the connecting tube 12. The first slot A on the base tube 11 is recessed from the top surface of the base tube 11 and arranged along the outer circumference of the base tube 11. In one embodiment, the first slot A is a straight slot or rectangular structure. The dimensions of the first slot A match those of the first plug-in unit B and the second plug-in unit C; the first plug-in unit B and the second plug-in unit C have the same structure.

[0060] The two end walls of the first slot A are recessed to form a square groove A1, which is located near the top of the first slot A. A card block A2 is provided in the square groove A1. The card block A2 is connected to the square groove A1 via a first spring A3, and the card block A2 can extend or extend into the square groove A1. In other words, the card block A2 elastically moves within the square groove A1. The top surface of the card block A2 extending out of the square groove A1 is provided with an arc-shaped slope. For example, when the first plug-in B is inserted into the corresponding first slot A, the first plug-in B abuts the arc-shaped slope of the card block A2, pushing the card block A2 into the square groove A1. The first plug-in unit B has a T-shaped structure, comprising a vertically arranged connecting portion and a horizontal block arranged perpendicular to the connecting portion. A locking space is defined between the horizontal block and the bottom wall of the connecting tube 12, the size of which matches the locking block A2. The first plug-in unit B corresponds to the first slot A. When the first plug-in unit B is inserted into the first slot A, it abuts the arc-shaped slope of the locking block A2, driving the locking blocks A2 away from each other and compressing the first spring A3. Once the first plug-in unit B is fully positioned in the first slot A, the locking block A2 is ejected by the first spring A3 and extends into the locking space to engage the first plug-in unit B. This prevents the first plug-in unit B from being disengaged.

[0061] If you need to release the first plug-in unit B, you can manually push the block A2 back into the square slot A1. Specifically, the block A2 is made of iron, so it can be sucked into the square slot A1 by a magnet. It should be noted that the release operation is performed on the ground, that is, after the inner tube assembly 1 is recovered.

[0062] The structure of the second plug-in C is the same as that of the first plug-in B. The second plug-in C cooperates with the first slot A of the topmost connecting tube 12 in the same manner as the first plug-in B cooperates with the first slot A. Detailed description is omitted here.

[0063] The inner wall of the outer tube 2 is symmetrically provided with vertical slots 25 that pass through the top. The vertical slots 25 are used for the passage of the grouting head 4 when the bottom tube 11 and the connecting tube 12 extend into the outer tube 2. Thus, when the inner tube assembly 1 is installed in the outer tube 2, the grouting head 4 corresponds to the vertical slots 25, and the grouting head 4 extends into the vertical slots 25. The grouting holes 23 are provided in the vertical slots 25 and pass through the outer wall of the outer tube 2. After the inner tube assembly 1 is installed, the grouting holes 23 correspond to the grouting heads 4. In this way, the slurry flows out of the grouting head 4, flows through the grouting holes 23 and enters the bladder 24.

[0064] Described grouting hole 23 runs through the outer wall of described outer tube 2 and is formed with bottom surface, top surface, first side surface and the second side surface relative to the first side surface around grouting hole 23. Specifically, grouting hole 23 is square so has four faces, and grouting head 4 is also square.

[0065] A accommodating channel 251 is also provided on one side of the vertical groove channel 25. The accommodating channel 251 is vertically arranged in the inner wall. The connecting component 22 is installed in the accommodating channel 251. The accommodating channel 251 passes through the first side surface and is connected with the grouting hole 23. A accommodating groove 252 is also provided on the side where the second side surface is located. The accommodating groove 252 is connected with the grouting hole 23 through the second side surface. A baffle 253 is provided in the accommodating groove 252. In this way, the baffle 253 can be moved out of the accommodating groove 252 and located at the grouting hole 23 to block the grouting hole 23.

[0066] The specific relationship of setting the baffle 253 in the receiving groove 252 is: a square receiving groove 252 is opened in a recessed manner on the side where the second side surface of the grouting hole 23 is located. It should be noted that the height of the receiving groove 252 is consistent with the height of the baffle 253 and the baffle 253 is also square, and the thickness of the receiving groove 252 is also consistent with the thickness of the baffle 253.

[0067] In one example, a connecting rod is provided on one side of the baffle 253 and inserted into the inner wall of the receiving groove 252 so that the baffle 253 remains stable when sliding in the receiving groove 252 .

[0068] In another example, the transverse length of the accommodating groove 252 is much greater than the transverse length of the baffle 253 , so that a spring can be installed between the baffle 253 and the inner wall of the accommodating groove 252 to maintain a stable connection.

[0069] In another example, the lateral length of the accommodating groove 252 is smaller than the lateral length of the baffle 253 so that when the baffle 253 is in the accommodating groove 252, one side of the baffle 253 extends out of the accommodating groove 252, and when the baffle 253 slides out of the accommodating groove 252, the other side is still located in the accommodating groove 252 to prevent it from completely extending out of the accommodating groove 252 and falling off, which can also ensure the stability of the baffle 253.

[0070] In other examples, a molding strip may be added to the top of the baffle 253 , and a long molding groove may be provided to connect the accommodating groove 252 and the top of the grouting hole 23 . The molding strip of the baffle 253 may be embedded in the molding groove and slidably connected to ensure the stability of the baffle 253 .

[0071] Figure 5 and Figure 6 This is only a schematic diagram of the structure. The specific structure is subject to the description in the manual.

[0072] A first magnetic piece 2531 is provided on the side of the baffle 253 facing the connecting component 22, and a magnetic attraction piece 221 that attracts the first magnetic piece 2531 and a repulsion piece 222 that repels the first magnetic piece 2531 are provided on the side of the connecting component 22 facing the baffle 253. The displacement of the connecting component 22 in the accommodating channel 251 drives the first magnetic piece 2531 to move out of the accommodating groove 252 or move into the accommodating groove 252 from the grouting hole 23.

[0073] It should be noted that, in order to prevent the magnetic sheet 221 and the repelling sheet 222 from interfering with each other, an isolation strip may be provided between the magnetic sheet 221 and the repelling sheet 222 .

[0074] The connecting component 22 is a long, plate-like structure located within the accommodating channel 251. Its bottom is connected to the bottom of the accommodating channel 251 via a second spring 223, and its top is connected to a magnetic sphere 225 via a third spring 224. The magnetic sphere 225 magnetically cooperates with the magnetic component. Specifically, when the magnetic component engages the magnetic sphere 225, the magnetic sphere 225 drives the connecting component 22 upward, causing the repelling plate 222 to repel the first magnetic plate 2531. When the magnetic component releases the magnetic sphere 225, the magnetic sphere 225 is pulled back by the third spring 224, and the connecting component 22 is pulled back by the second spring 223. The connecting component 22 moves downward, causing the magnetic plate 221 to attract the first magnetic plate 2531.

[0075] In this way, when the connector 3 is connected to the inner tube group 1 and the outer tube 2, the repulsive piece 222 repels the first magnetic piece 2531, the baffle 253 is located in the receiving groove 252, and the grouting hole 23 is opened; conversely, when the connector 3 is released from the inner tube group 1 and the outer tube 2, the magnetic attraction piece 221 attracts the first magnetic piece 2531, the baffle 253 moves out of the receiving groove 252 and is located at the grouting hole 23 to block the grouting hole 23.

[0076] The bottom surface of the connector 3 is provided with an arc-shaped groove 31 for fitting the magnetic ball 225. The magnetic component includes an electromagnet, which is embedded in the arc-shaped groove 31. The electromagnet is configured to generate magnetism when energized to attract the magnetic ball 225. The magnetic ball 225 is attracted and embedded in the arc-shaped groove 31 to connect the connecting component 22 to the connector 3.

[0077] The diameter of the magnetic sphere 225 is greater than the length of the opening of the accommodating channel 251 .

[0078] Furthermore, a protrusion 226 is provided on one side of the connecting component 22, and two recessed grooves 2512 are provided on the side wall of the accommodating channel 251. When the connecting component 22 is displaced in the accommodating channel 251, the protrusion 226 cooperates with the two recessed grooves 2512 respectively, so as to stabilize the position of the connecting component 22 in the accommodating channel 251.

[0079] The two recessed grooves 2512 are arranged up and down. When the magnetic sphere 225 is attracted and embedded in the arc-shaped groove 31, the protrusion 226 engages with the upper recessed groove 2512, and the repulsive piece 222 repels the first magnetic piece 2531. When the magnetic sphere 225 is no longer attracted to the electromagnet, the protrusion 226 engages with the lower recessed groove 2512, and the suction piece 221 attracts the first magnetic piece 2531.

[0080] A solenoid valve D is provided at the bottom opening of the connecting tube 12, connecting the multiple connecting tubes 12 and the bottom tube 11 via the solenoid valve D. Thus, the solenoid valve D can be controlled to control the communication between the multiple connecting tubes 12, as well as the communication with the bottom tube 11, thereby controlling the flow of slurry into the pouch 24 of a specific connecting tube 12 or bottom tube 11. For example, by controlling the solenoid valve D, slurry can be injected into the topmost connecting tube 12 and a second connecting tube 12 connected to the topmost connecting tube 12, and then enter the corresponding pouch 24.

[0081] Finally, it should be noted that after grouting, the outer tube 2, connector 3, and inner tube group 1 are cleaned to prevent the slurry from solidifying and clogging the valves, connections, grouting holes 23, and grouting head 4. The outer tube 2, connector 3, and inner tube group 1 are then disconnected and the connector 3 and inner tube group 1 are recovered.

[0082] Example 2

[0083] The second embodiment of the present invention, based on the previous embodiment, provides a grouting construction method, comprising:

[0084] Draw the pile layout diagram according to the design requirements and determine the drilling location and depth;

[0085] A drilling machine is used to drill a hole at an angle to a designed hole depth, wherein the hole is protected by mud to prevent the hole from collapsing, and the hole drilled by the drilling machine is in an inclined state;

[0086] Install the inclined recyclable bladder grouting device for controlling soil deformation as described in Example 1 and drive it into the borehole in an inclined state;

[0087] Grouting the capsule grouting device by setting grouting parameters through a grouting machine, wherein the grouting parameters include grouting pressure, grouting time, and grouting volume;

[0088] After the injection is completed, the magnetic component of the bladder grouting device is powered off to release the connection between the outer tube 2 and the connector 3, and the connector 3 and the inner tube group 1 are recovered.

[0089] It's important to note that the principles of grouting technology using grouting pipes are primarily based on fluid mechanics and materials science. During the grouting process, a prepared slurry is first injected through a grouting pipe into cracks or cavities in the stratum or structure. Under pressure, the slurry gradually diffuses, permeates, and fills the entire crack or cavity. As the slurry solidifies and hardens, it becomes integrated with the stratum or structure, achieving reinforcement, waterproofing, and sealing effects.

[0090] Specifically, the specific construction method is as follows:

[0091] Excavation and finishing:

[0092] During the foundation pit excavation process, it is necessary to coordinate and cooperate closely with the earthwork team in a timely manner and excavate according to the designed slope ratio.

[0093] Repair the slope in time to ensure the flatness of the slope and prepare for subsequent grouting work.

[0094] Grouting pipe processing and installation:

[0095] According to the engineering requirements, the appropriate grouting pipe model and specifications are selected. In this embodiment, the grouting pipe described in Example 1 is used and the inner pipe group 1, outer pipe 2 and connector 3 are installed.

[0096] A hole is drilled at a location where grouting is required. In this embodiment, the hole is drilled obliquely to form an inclined channel for accommodating a grouting pipe buried obliquely underground.

[0097] Grouting preparation:

[0098] Prepare necessary materials and equipment such as grouting pumps, mixers, pipe joints, valves, etc.

[0099] Check the grouting pipes and related equipment to ensure that they are intact and there is no water leakage, air leakage, etc.

[0100] According to the specific conditions of the concrete structure, determine the location and amount of grouting required, and mark them.

[0101] Grouting operation:

[0102] Connect the grouting pipeline, connect the grouting pump, mixer and other equipment to the grouting pipe, and ensure that the connection is firm and sealed.

[0103] Debug the grouting pump to ensure that it can work normally and the pressure can reach the required grouting pressure.

[0104] Start the grouting pump and insert the grouting device into the area that needs grouting. Be careful to push gently and slowly when inserting it to avoid damage to the grouting device.

[0105] During the grouting process, it is necessary to constantly monitor changes in grouting pressure and grouting volume, as well as the conditions of the grouting site. If any abnormality is detected, grouting should be stopped immediately, and the fault should be checked and corrected. In addition, during the grouting process, the slurry is selectively injected into certain connecting pipes 12 in the bladder grouting device by controlling the solenoid valve D. For example, from top to bottom, the first and second connecting pipes 12, at this time, the solenoid valve D of the second connecting pipe 12 is closed, so it cannot enter the third connecting pipe 12. The slurry is injected into the bladder bag 24 outside the first and second connecting pipes 12 under the pressure of the grouting machine.

[0106] Control the grouting speed to avoid pipe blockage caused by too fast or cement precipitation caused by too slow.

[0107] After the grouting is completed, that is, when the bag 24 is filled, the excess grout should be immediately extracted and the connecting pipe should be flushed with clean water to avoid cement precipitation causing pipe blockage.

[0108] Check the grouting pipes regularly, including pipe joints, valves and other parts, to ensure there is no water leakage, air leakage, etc.

[0109] If re-grouting is required, the outer tube 2 can be taken out, cleaned, and reinstalled, and then placed back into the ground for re-grouting.

[0110] Furthermore, when performing grouting construction using an inclined recyclable capsule grouting device for controlling soil deformation, the grouting process can also be monitored by a set monitoring device. Specifically, a pressure sensor can also be set in the capsule 24, and the monitoring device monitors the grouting pressure to control the grouting amount.

[0111] A displacement sensor may also be provided on the bladder grouting device, and the stress or deformation caused by the foundation pit excavation and the pressure in the bladder bag 24 during the grouting process may be monitored in real time by the monitoring device.

[0112] At the same time, monitoring instruments such as displacement sensors and pressure sensors are also arranged on one side of the existing underground structure to monitor in real time the stress or deformation of the existing underground structure caused by foundation pit excavation.

[0113] Multiple capsule grouting devices can be connected in series, and synchronous control of multiple grouting devices can be achieved through a computer.

[0114] It should be further explained that if Figure 9 As shown, the construction environment includes retaining structures, existing underground structures, bladder grouting devices, and monitoring devices. Internal supports are arranged on the inner side of the foundation pit retaining structure, and a borehole is constructed between the foundation pit retaining structure and the existing underground structure. The bladder grouting device is arranged obliquely in the borehole, and its burial depth is greater than that of the existing underground structure. In this way, the decomposition of the inclined grouting structure force can avoid direct deformation of the foundation pit retaining structure (reducing the horizontal force generated during the grouting process of the traditional vertical grouting device, thereby exacerbating the impact of the lateral displacement of the retaining structure), or effectively control the lifting of the existing underground structure (tunnel, etc.) that is adjacent to the settlement.

[0115] It is important to note that the construction and arrangement of the present application shown in a number of different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, directional changes, etc.) without departing substantially from the novel teachings and advantages of the subject matter described in this application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature or number or position of the discrete elements may be altered or changed. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "means plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structures. Other replacements, modifications, changes, and omissions may be made in the design, operating conditions, and arrangement of the exemplary embodiments without departing from the scope of the present invention. Therefore, the invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0116] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0117] It will be appreciated that in the development of any actual embodiment, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will, for those of ordinary skill having the benefit of this disclosure, be a routine undertaking of design, fabrication, and production without undue experimentation.

[0118] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be covered.

Claims

1. An inclined recyclable bladder grouting device for controlling soil deformation, characterized by: The invention comprises an inner tube group (1), wherein the inner tube group (1) comprises at least a bottom tube (11) located at the bottom and hollow, and a plurality of hollow connecting tubes (12), wherein the bottom tube (11) and the connecting tube (12) are coaxially connected in sequence, a first slot (A) is provided on the circumference of the top surface of the bottom tube (11) and the connecting tube (12), a first plug-in (B) is provided on the circumference of the bottom surface of the connecting tube (12), the first plug-in (B) is plugged into the adjacent first slot (A) so that the bottom tube (11) and the plurality of connecting tubes (12) are connected in series, and a pipe cap for connecting to an external grouting machine is provided on the top of the tube body of the topmost connecting tube (12); A pair of symmetrical grouting heads (4) are provided on the bottom pipe (11) and the plurality of connecting pipes (12), and the grouting heads (4) are communicated with the interior; The outer tube (2) is provided with a circular accommodation space (21) recessed from one end. The outer tube (2) is sleeved on the inner tube group (1). The bottom tube (11) and a plurality of connecting tubes (12) are serially connected and accommodated in the accommodation space (21). The outer wall of the outer tube (2) is provided with a pair of symmetrical grouting holes (23). The grouting holes (23) correspond to and are connected to the grouting head (4). The outer wall of the outer tube (2) is also symmetrically provided with a plurality of groups of bags (24). The internal space of each bag (24) corresponds to a corresponding grouting hole (23). Flexible adhesive tapes for reinforcement are provided on the outer sides of the upper and lower ends of the bag (24) and are fixed around the outer sides of the upper and lower ends of the bag (24). The connector (3) is in a disc structure, and a second plug-in unit (C) is provided on the circumference of the connector (3). The second plug-in unit (C) is plugged into a first slot (A) on the top surface of the topmost connector (12) among the plurality of connector tubes (12), so that the connector (3) is engaged and connected with the inner tube assembly (1); A magnetic component is also provided on the connector (3), and a connecting component (22) is also provided in the inner wall of the outer tube (2). The magnetic component and the connecting component (22) cooperate magnetically to achieve magnetic connection between the connector (3) and the outer tube (2).

2. The inclined recyclable bladder grouting device for controlling soil deformation according to claim 1, characterized in that: The first slot (A) on the connecting tube (12) is formed by being recessed from the top surface of the connecting tube (12) and is arranged along the circumference of the outer wall of the connecting tube (12); the first slot (A) on the bottom tube (11) is formed by being recessed from the top surface of the bottom tube (11) and is arranged along the circumference of the outer wall of the bottom tube (11); The two end walls in the first slot (A) are recessed to form a square groove (A1). A clamping block (A2) is provided in the square groove (A1). The clamping block (A2) is connected to the square groove (A1) via a first spring (A3). The top surface of the clamping block (A2) extending out of the square groove (A1) is provided with an arc-shaped slope.

3. The inclined recyclable bladder grouting device for controlling soil deformation according to claim 2, characterized in that: The first plug-in unit (B) has a T-shaped structure, comprising a vertically arranged connecting portion and a horizontal block arranged perpendicular to the connecting portion, wherein a locking space is provided between the horizontal block and the bottom wall of the connecting pipe (12), and the size of the locking space matches that of the locking block (A2); The first plug-in (B) corresponds to the first slot (A). When the first plug-in (B) is inserted into the first slot (A), it abuts against the arc-shaped slope of the card block (A2) and drives the card blocks (A2) away from each other and compresses the first spring (A3). After the first plug-in (B) is located in the first slot (A), the card block (A2) extends into the engagement space to engage with the first plug-in (B).

4. The inclined recyclable bladder grouting device for controlling soil deformation according to claim 3, characterized in that: The structure of the second plug-in (C) is the same as that of the first plug-in (B), and the matching mode between the second plug-in (C) and the first slot (A) of the topmost connecting tube (12) is the same as the matching mode between the first plug-in (B) and the first slot (A).

5. The inclined recyclable bladder grouting device for controlling soil deformation according to claim 1, characterized in that: A vertical groove channel (25) is symmetrically provided on the inner wall of the outer tube (2) and passes through the top. The vertical groove channel (25) is used for the passage of the grouting head (4) when the bottom tube (11) and the connecting tube (12) extend into the outer tube (2). The grouting hole (23) is opened in the vertical groove channel (25) and passes through the outer wall of the outer tube (2).

6. The inclined recyclable bladder grouting device for controlling soil deformation according to claim 5, characterized in that: The grouting hole (23) penetrates the outer wall of the outer tube (2) and is surrounded by a bottom surface, a top surface, a first side surface, and a second side surface opposite to the first side surface. An accommodating channel (251) is further provided on one side of the vertical groove channel (25), the connecting component (22) is installed in the accommodating channel (251), and the accommodating channel (251) passes through the first side surface and is in communication with the grouting hole (23); A receiving groove (252) is further provided on the side where the second side surface is located. The receiving groove (252) is communicated with the grouting hole (23) through the second side surface. A baffle (253) is provided in the receiving groove (252). A first magnetic piece (2531) is provided on the side of the baffle (253) facing the connecting component (22); a magnetic attraction piece (221) attracted to the first magnetic piece (2531) and a repulsion piece (222) repelled from the first magnetic piece (2531) are provided on the side of the connecting component (22) facing the baffle (253); the displacement of the connecting component (22) in the accommodating channel (251) drives the first magnetic piece (2531) to move out of the accommodating groove (252) or move into the accommodating groove (252) from the grouting hole (23).

7. The inclined recyclable bladder grouting device for controlling soil deformation according to claim 6, characterized in that: The connecting component (22) is in the form of a long strip plate, the bottom of which is connected to the bottom of the accommodating channel (251) via a second spring (223), and the top of which is connected to a magnetic sphere (225) via a third spring (224), and the magnetic sphere (225) is magnetically matched with the magnetic component; The bottom surface of the connector (3) is provided with an arc-shaped groove (31), and the magnetic component includes an electromagnet, which is embedded in the arc-shaped groove (31). The electromagnet is configured to generate magnetism when energized to attract a magnetic sphere (225). The magnetic sphere (225) is attracted and embedded in the arc-shaped groove (31) to connect the connecting component (22) to the connector (3); The diameter of the magnetic sphere (225) is greater than the length of the opening of the accommodating channel (251).

8. The inclined recyclable bladder grouting device for controlling soil deformation according to claim 7, characterized in that: A protrusion (226) is provided on one side of the connecting component (22), and two recessed grooves (2512) are provided on the side wall of the accommodating channel (251). When the connecting component (22) moves in the accommodating channel (251), the protrusion (226) respectively cooperates with the two recessed grooves (2512); The two recessed grooves (2512) are arranged one above the other. When the magnetic sphere (225) is attracted and embedded in the arc-shaped groove (31), the protrusion (226) engages with the upper recessed groove (2512), and the repelling piece (222) and the first magnetic piece (2531) repel each other. When the magnetic sphere (225) and the electromagnet are released from attraction, the protrusion (226) engages with the lower recessed groove (2512), and the magnetic attraction piece (221) and the first magnetic piece (2531) attract each other.

9. The inclined recyclable bladder grouting device for controlling soil deformation according to claim 1, characterized in that: A solenoid valve (D) is provided at the bottom opening of the connecting pipe (12), and the plurality of connecting pipes (12) and the bottom pipe (11) are communicated with each other via the solenoid valve (D).

10. A construction method, characterized in that: include, Draw the pile layout diagram according to the design requirements and determine the drilling location and depth; A drilling machine is used to drill a hole at an angle to a designed hole depth, wherein the hole is protected by mud to prevent the hole from collapsing, and the hole drilled by the drilling machine is in an inclined state; Install the inclined recyclable bladder grouting device for controlling soil deformation according to any one of claims 1 to 9 and drive it into the drill hole in an inclined state; Grouting the capsule grouting device by setting grouting parameters through a grouting machine, wherein the grouting parameters include grouting pressure, grouting time, and grouting volume; After the injection is completed, the magnetic component of the bladder grouting device is powered off to release the connection between the outer tube (2) and the connector (3), and the connector (3) and the inner tube group (1) are recovered.

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