Inclined recyclable bag type grouting device for controlling deformation of soil body and construction method

Abstract

The invention discloses an inclined recoverable bag type grouting device for controlling soil deformation and a construction method.The inclined recoverable bag type grouting device comprises an inner pipe set, the inner pipe set at least comprises a hollow bottom pipe located at the bottom and a plurality of hollow connecting pipes, first inserting grooves are formed in the circumferences of the top faces of the bottom pipe and the connecting pipes, and first inserting pieces are arranged on the circumferences of the bottom faces of the connecting pipes; the first plug-in is in matched plug-in connection with the adjacent butted first slots, so that the bottom pipe and the plurality of connecting pipes are connected in series; the inner pipe set is sleeved with the outer pipe, the outer wall of the outer pipe is further symmetrically provided with multiple sets of bags, connectors and disc structures, the upper circumference of each connector is provided with a second inserting piece, and the second inserting pieces are connected with first inserting grooves in the top face of the topmost connecting pipe in a matched and inserted mode so that the connectors can be connected with the inner pipe set in a clamped mode; a magnetic component is further arranged on the connector, a connecting component is further arranged in the inner wall of the outer pipe, and the magnetic component is in magnetic fit with the connecting component. The bottom pipe and the plurality of connecting pipes can be combined and connected in series, so that the length is extended, and the flexibility is higher.

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] As the pace of modern urban construction continues to accelerate, a large number of deep foundation pits have emerged in the urban environment, close to existing underground structures. The environmental problems caused by deep foundation pit construction need to be strictly controlled. During the excavation of the foundation pit, the unloading of the soil causes the soil outside the pit to move toward the foundation pit and induces the lateral displacement of the retaining structure. At the same time, it causes the adjacent building foundations or tunnels outside the pit to move with the soil toward the pit. Therefore, the deformation caused by foundation pit construction in a dense urban environment 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, pneumatic 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] At present, the grouting pipes in the engineering field, especially in the field of construction, are usually made of steel pipes. Grouting pipes are usually formed in one piece and are difficult to adapt to the diversity of different depths. Therefore, it is necessary to prepare multiple types of grouting pipes, which results in high cost. The traditional grouting pipe uses grouting holes to directly inject grouting, which cannot form a continuous and dense grouting body and has little auxiliary effect on the bearing capacity and stability of the foundation. The horizontal force generated by the traditional vertical capsule grouting device during the grouting process will further aggravate the impact on the lateral displacement of the retaining structure. The traditional vertical capsule grouting device cannot effectively control the settlement of existing underground structures that have already settled. Summary of the invention

[0005] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot 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 types of grouting pipes, which results in a large cost loss. In addition, the traditional grouting pipes use the 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 the 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] In order 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 at least comprising a bottom tube located at the bottom and hollow and a plurality of hollow connecting tubes, the bottom tube and the connecting tubes are coaxially butted in sequence, a first slot is arranged on the circumference of the top surface of the bottom tube and the connecting tube, a first plug-in is arranged on the circumference of the bottom surface of the connecting tube, the first plug-in cooperates with the adjacent butted first slot to plug and engage so that the bottom tube and the plurality of connecting tubes are connected in series, and a pipe cap for an external grouting machine is 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, 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, the grouting holes correspond to and are connected with the grouting head, and the outer wall of the outer tube is also symmetrically provided with multiple groups of bags, the internal space of each bag corresponds to a corresponding grouting hole, and the upper and lower ends of the bag are provided with flexible tapes for reinforcement and are fixed around the upper and lower ends of the bag;

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

[0012] A magnetic component is also provided on the connecting head, and a connecting component is also provided in the inner wall of the outer tube. The magnetic component and the connecting component cooperate magnetically so that the connecting head is magnetically connected to the outer tube.

[0013] As a preferred solution of the inclined recyclable bladder grouting device for controlling soil deformation of the present invention, wherein: 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 arranged 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 arranged to be an arc-shaped slope.

[0015] As a preferred solution of the inclined recyclable bladder grouting device for controlling soil deformation of the present invention, the first plug-in is a type 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 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 against 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 to engage 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 mode between the second plug-in and the first slot of the topmost connecting pipe is the same as the cooperation mode 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, and 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, and the grouting holes are opened in the vertical groove channels and pass through the outer wall of the outer tube.

[0019] As a preferred solution of the inclined recyclable bladder grouting device for controlling soil deformation of the present invention, wherein: the grouting hole penetrates the outer wall of the outer tube and the grouting hole 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] A receiving channel is also provided on one side of the vertical groove channel, the connecting component is installed in the receiving channel, and the receiving channel passes through the first side surface and is connected with the grouting hole;

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

[0022] A first magnetic sheet is arranged on the side of the baffle plate facing the connecting component, and a magnetic attraction sheet attracted to the first magnetic sheet and a repulsion sheet repelling the first magnetic sheet are arranged on the side of the connecting component facing the baffle plate. 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 solution of the inclined recyclable bladder grouting device for controlling soil deformation of the present invention, the connecting component is in the form of a long strip plate structure, the bottom of which is connected to the bottom of the accommodating channel through a second spring, and the top of which is connected to a magnetic sphere through a third spring, and the magnetic sphere is magnetically matched with the magnetic component;

[0024] An arc-shaped groove is provided on the bottom surface of the connector, 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 connector 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 solution of the inclined recyclable bladder grouting device for controlling soil deformation of the present invention, wherein: 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, and when the connecting component is displaced 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 is engaged with the upper recessed groove, and the repulsive plate repels the first magnetic plate. When the magnetic sphere and the electromagnet are released from attraction, the protrusion is engaged with the lower recessed groove, and the suction plate is attracted to the first magnetic plate.

[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 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 mud is used to protect the hole wall to prevent hole collapse, and the hole drilled by the drilling machine is in an inclined state;

[0031] Install the inclined recyclable capsule grouting device for controlling soil deformation as described in any one of the above items and drive it into the borehole to install it in an inclined state;

[0032] The grouting machine is used to set the grouting parameters for grouting the capsule grouting device, 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 a plurality of connecting pipes which can be combined and connected in series to extend its length, and can be matched with outer pipes of different lengths to adapt to different requirements during grouting, and has higher flexibility; the present invention also symmetrically arranges a plurality of groups of bags on the outer wall of the outer pipe, and slurry is injected into the bags to form a solid body, and 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 can 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 ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0036] Figure 1 It is a schematic diagram of the overall structure of the bladder grouting device in the first embodiment.

[0037] Figure 2 It is a 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 It is a schematic diagram of the cooperation between the connecting pipe and the connecting head in the first embodiment.

[0040] Figure 5 It is a schematic diagram of the repelling cooperation between the connecting component and the baffle in the first embodiment.

[0041] Figure 6 It is a 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 diagram of the cross-sectional structure of the inner tube group, the connector, and the outer tube in the first embodiment.

[0043] Figure 8It is a top cross-sectional view of the outer tube in the first embodiment.

[0044] Fig. 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 implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0046] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and 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" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0048] Example 1

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

[0050] An inner tube group 1, the inner tube group 1 at least includes a bottom tube 11 located at the bottom and hollow and a plurality of hollow connecting tubes 12, the bottom tube 11 and the connecting tubes 12 are coaxially butted in sequence, a first slot A is arranged on the circumference of the top surface of the bottom tube 11 and the connecting tube 12, a first plug-in B is arranged on the circumference of the bottom surface of the connecting tube 12, the first plug-in B cooperates with the adjacent butted first slot A to enable the bottom tube 11 and the plurality of connecting tubes 12 to be connected in series, a pipe cap for an external grouting machine is mounted on the top of the tube body of the topmost connecting tube 12; the pipe cap is used to butt 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 are penetrated at both ends 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 connected to the interior. The slurry is injected out through the grouting heads 4 .

[0053] 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 multiple 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 communicate with the grouting head 4, and 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, and the upper and lower ends of the bladder bag 24 are provided with flexible tapes for reinforcement and are fixed around the upper and lower ends of the bladder bag 24;

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

[0055] Two grouting heads 4 are arranged on a bottom pipe 11, two grouting heads 4 are arranged on a connecting pipe 12, and the number of bags 24 arranged 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 structure, and a second plug C is arranged 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 group 1;

[0057] 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 are magnetically matched to make the connector 3 and the outer tube 2 magnetically connected.

[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 formed by being recessed from the top surface of the connecting tube 12 and arranged along the outer wall circumference of the connecting tube 12, and the first slot A on the bottom tube 11 is formed by being recessed from the top surface of the bottom tube 11 and arranged along the outer wall circumference of the bottom tube 11; in one embodiment, the first slot A is in the shape of a straight slot or a rectangular structure. The size of the first slot A matches the size of the first plug-in B and the second plug-in C; the first plug-in B and the second plug-in C have the same structure.

[0060] The two end walls in the first slot A are recessed to form a square groove A1, and the square groove A1 is close to the top of the first slot A. A card block A2 is arranged in the square groove A1, and the card block A2 is connected to the square groove A1 through a first spring A3, and the card block A2 can extend out or extend into the square groove A1. That is, the card block A2 moves elastically in 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 against the arc-shaped slope of the card block A2 to push the card block A2 into the square groove A1. The first plug-in B is a T-shaped structure, including a vertically arranged connection part and a horizontal block arranged perpendicular to the connection part. There is a clamping space between the horizontal block and the bottom wall of the connection tube 12, and the size of the clamping space matches the clamping 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 clamping block A2 and drives the clamping blocks A2 away from each other and compresses the first spring A3. After the first plug-in B is completely located in the first slot A, the clamping block A2 is ejected by the first spring A3 and extends into the clamping space to clamp the first plug-in B. In this way, the first plug-in B cannot be separated.

[0061] If the first plug-in B needs to be released, the block A2 can be manually pushed back into the square slot A1. Specifically, the block A2 is made of iron, so that the block A2 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, the inner tube group 1 is recovered and then operated.

[0062] The structure of the second plug-in C is the same as that of the first plug-in B, and the cooperation mode between the second plug-in C and the first slot A of the topmost connecting tube 12 is the same as the cooperation mode between the first plug-in B and the first slot A. No further description will be given here.

[0063] The inner wall of the outer tube 2 is symmetrically provided with vertical groove channels 25 and passes through the top. The vertical groove channels 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. In this way, when the inner tube group 1 is installed in the outer tube 2, the grouting head 4 corresponds to the vertical groove channels 25, the grouting head 4 extends into the vertical groove channels 25, and the grouting holes 23 are opened in the vertical groove channels 25 and pass through the outer wall of the outer tube 2. After the inner tube group 1 is installed, the grouting holes 23 correspond to the grouting heads 4, so that the slurry flows out from the grouting heads 4, flows through the grouting holes 23 and enters the bladder 24.

[0064] 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 relative to the first side surface. Specifically, the grouting hole 23 is square and has four faces, and the 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 arranged 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 one 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 disposed 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 lateral length of the receiving groove 252 is much greater than the lateral length of the baffle 253, so that a spring can be installed between the baffle 253 and the inner wall of the receiving 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 thus falling off, thereby also ensuring the stability of the baffle 253.

[0070] In other examples, a fillet strip may be added to the top of the baffle 253 , and a long fillet groove is provided to connect the accommodating groove 252 and the top of the grouting hole 23 . The fillet strip of the baffle 253 is embedded in the fillet groove for sliding connection, thereby ensuring 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 sheet 2531 is arranged on the side of the baffle 253 facing the connecting component 22, and a magnetic attraction sheet 221 attracted to the first magnetic sheet 2531 and a repulsion sheet 222 repelling the first magnetic sheet 2531 are arranged 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 sheet 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 attraction sheet 221 and the repulsion sheet 222 from interfering with each other, an isolation strip may be provided between the magnetic attraction sheet 221 and the repulsion sheet 222 .

[0074] The connecting component 22 is a long strip-shaped plate-like structure located in the accommodating channel 251, and its bottom is connected to the bottom of the accommodating channel 251 through the second spring 223, and its top is connected to the magnetic ball 225 through the third spring 224, and the magnetic ball 225 and the magnetic component are magnetically matched; specifically, when the magnetic component attracts the magnetic ball 225, the magnetic ball 225 drives the connecting component 22 to move upward so that the repelling piece 222 repels the first magnetic piece 2531. When the magnetic component releases the magnetic ball 225, the magnetic ball 225 is pulled back by the third spring 224, and the connecting component 22 is pulled back by the second spring 223, and the connecting component 22 moves downward, so that the magnetic attraction piece 221 and the first magnetic piece 2531 are attracted to each other.

[0075] In this way, when the connector 3 is connected to the inner tube group 1 and the outer tube 2, the repulsive plate 222 repels the first magnetic plate 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 plate 221 attracts the first magnetic plate 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 matching the magnetic sphere 225. The magnetic component includes an electromagnet, which is embedded in the arc-shaped groove 31. The electromagnet is configured to generate magnetism when powered on to attract the 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.

[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 repelling 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] The bottom opening of the connecting tube 12 is provided with an electromagnetic valve D, and the multiple connecting tubes 12 and the bottom tube 11 are connected through the electromagnetic valve D. In this way, the connection between the multiple connecting tubes 12 can be controlled by controlling the electromagnetic valve D, and the connection with the bottom tube 11 can also be controlled, so that the slurry can be controlled to enter the bag 24 of the designated connecting tube 12 or the bottom tube 11. For example, through the conduction of the electromagnetic valve D, the slurry can be injected into the topmost connecting tube 12 and the second connecting tube 12 connected to the topmost connecting tube 12, and then enter the corresponding bag 24.

[0081] Finally, it should be noted that after the grouting is completed, the outer tube 2, the connector 3, and the inner tube group 1 are cleaned to prevent the slurry from solidifying and clogging the valve, the connection, the grouting hole 23, and the grouting head 4. Then, the connection between the outer tube 2, the connector 3, and the inner tube group 1 is released and the connector 3 and the 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 mud is used to protect the hole wall to prevent hole collapse, and the hole drilled by the drilling machine is in an inclined state;

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

[0087] The grouting machine is used to set the grouting parameters for grouting the capsule grouting device, 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 should be noted that the principle of grouting technology is mainly based on fluid mechanics and materials science. In the grouting process, the prepared slurry is first injected into the cracks and cavities of the stratum or structure through the grouting pipe. Under the action of pressure, the slurry gradually diffuses, penetrates and fills the entire crack or cavity. As the slurry solidifies and hardens, it forms a whole with the stratum or structure, thereby achieving the effects of reinforcement, waterproofing, and sealing.

[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 the subsequent grouting work.

[0094] Grouting pipe processing and installation:

[0095] According to the engineering requirements, the appropriate grouting pipe model and specification are selected. In this embodiment, the grouting pipe described in the first embodiment is used and the inner pipe group 1, the outer pipe 2 and the 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 free of water leaks, air leaks, 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. Pay attention to push gently and slowly when inserting it to avoid damage to the grouting device.

[0105] During the grouting process, it is necessary to always pay attention to the changes in grouting pressure and grouting volume, as well as the situation of the grouting site. If any abnormality is found, the grouting should be stopped immediately, and the fault should be checked and eliminated. 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 the top to the bottom of the first and second connecting pipes 12, the solenoid valve D of the second connecting pipe 12 is closed at this time, so it cannot enter the third connecting pipe 12, and the slurry is injected into the bladder bag 24 outside the first and second connecting pipes 12 with the pressure of the grouting machine.

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

[0107] After the grouting is completed, that is, when the bag 24 is filled, the excess grout should be immediately pumped out 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 are no water leaks, air leaks and so on.

[0109] If re-grouting is required, the outer tube 2 can be taken out, cleaned, reinstalled, and then placed back underground 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 through 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] A plurality of bladder grouting devices can be connected in series, and synchronous control of the plurality of grouting devices can be achieved through a computer.

[0114] It should be further explained that if Fig. 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 retaining structure of the foundation pit, and a borehole is constructed between the retaining structure of the foundation pit and the existing underground structure. The bladder grouting device is arranged obliquely in the borehole, and the burial depth is greater than the existing underground structure. In this way, the decomposition of the inclined grouting structure force can avoid direct deformation of the retaining structure of the foundation pit (reducing the horizontal force generated during the grouting process of the traditional vertical grouting device, thereby aggravating the impact of the lateral displacement of the retaining structure), or effectively lift and control the existing underground structure (tunnel, etc.) that is adjacent to the settlement.

[0115] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. 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, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangement, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling 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 implementation, 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 be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0118] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. 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 in that: 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 tubes (12) are coaxially butted in sequence, a first slot (A) is arranged on the circumference of the top surface of the bottom tube (11) and the connecting tube (12), a first plug-in (B) is arranged on the circumference of the bottom surface of the connecting tube (12), the first plug-in (B) is plugged in cooperation with the adjacent butted 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 an external grouting machine is mounted 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 connected to 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 upper and lower ends of the bag (24) and are fixed around the upper and lower ends of the bag (24). The connector (3) is in a disc structure, and a second plug-in (C) is arranged on the circumference of the connector (3). The second plug-in (C) is plugged into a first slot (A) on the top surface of the topmost connector (12) among the plurality of connectors (12), so that the connector (3) is snap-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 so that the connector (3) and the outer tube (2) are magnetically connected.

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); Two end walls in the first slot (A) are recessed to form a square groove (A1), a clamping block (A2) is arranged in the square groove (A1), the clamping block (A2) and the square groove (A1) are connected via a first spring (A3), and a 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) is in a T-shaped structure, comprising a vertically arranged connecting portion and a horizontal block arranged perpendicular to the connecting portion, wherein a clamping space is provided between the horizontal block and the bottom wall of the connecting tube (12), and the size of the clamping space matches the clamping 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) to move away from each other and compress 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 is 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: The inner wall of the outer tube (2) is symmetrically provided with vertical groove channels (25) which penetrate the top. The vertical groove channels (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). The grouting hole (23) is provided in the vertical groove channels (25) and penetrates 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 the grouting hole (23) is surrounded by a bottom surface, a top surface, a first side surface, and a second side surface opposite to the first side surface; A receiving channel (251) is also provided on one side of the vertical groove channel (25), the connecting component (22) is installed in the receiving channel (251), and the receiving channel (251) passes through the first side surface and is connected to the grouting hole (23); A receiving groove (252) is also provided on the side where the second side surface is located. The receiving groove (252) is connected to the grouting hole (23) through the second side surface. A baffle (253) is provided in the receiving groove (252); A first magnetic sheet (2531) is arranged on the side of the baffle (253) facing the connecting component (22); a magnetic attraction sheet (221) attracted to the first magnetic sheet (2531) and a repulsion sheet (222) repelling the first magnetic sheet (2531) are arranged 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 sheet (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 structure, 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), the magnetic component comprises an electromagnet, the electromagnet is embedded in the arc-shaped groove (31), the electromagnet is configured to generate magnetism when energized, and attract the magnetic sphere (225), the magnetic sphere (225) is attracted and embedded in the arc-shaped groove (31), so that the connecting component (22) is connected 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) cooperates with the two recessed grooves (2512) respectively; 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 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 suction 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 connected 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 mud is used to protect the hole wall to prevent hole collapse, and the hole drilled by the drilling machine is in an inclined state; Install the inclined recyclable bladder grouting device for controlling soil deformation as described in any one of claims 1 to 9 and drive it into the borehole to install it in an inclined state; The grouting machine is used to set the grouting parameters for grouting the capsule grouting device, 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.

Images