Construction method and structure of cave well waterproof plugging

Abstract

The present invention discloses a cave-well type waterproof plugging construction method and structure, which can reduce cost investment while performing good waterproof plugging construction on a cave-well structure body (1). According to the specific conditions of the cave-well structure body (1), a cave-well type waterproof plugging structure is manufactured, which comprises a grouting pipe A (5), a grouting pipe B (6), a drainage pipe (7), a bracket (8), a limit frame (9), a cloth bag (10), etc. After being manufactured, it is placed in the cave-well structure body (1). First, grouting is performed in the cloth bag (10) to form a cloth bag grouting layer (3). Then, polyurethane material is poured into the lower part of the cloth bag grouting layer (3) until a polyurethane grouting layer (2) that meets the requirements is formed. Finally, after solidification to a certain standard, rigid material is poured into the upper part of the cloth bag grouting layer (3) to form a rigid material grouting layer (4). After the construction is completed, a polyurethane grouting layer (2), a cloth bag grouting layer (3), and a rigid material grouting layer (4) are formed from bottom to top.

Description

Technical Field

[0001] The invention relates to the technical field of waterproofing and leak-proofing, in particular to a well-type waterproofing and plugging construction method and structure. Background Art

[0002] Well structures include drainage wells, pipe wells, and deep caves. Due to their deepness, when water seepage occurs, existing methods of plugging leaks (such as pumping out water and then using concrete to plug leaks, or filling with gravel and then pouring concrete to plug leaks) have the following technical drawbacks:

[0003] 1. The blocking time is long.

[0004] 2. The concrete and soil cannot be tightly bonded, and changes in temperature and settlement can easily cause displacement and lead to water seepage.

[0005] 3. Water seepage occurs at the edge of the seal for a long time, and the subsequent treatment of water seepage is complicated, difficult and expensive.

[0006] 4. This method can be used for general deep well structures. If the well is too large, too deep, or gushing, construction cannot be carried out. Even if you want to take measures such as precipitation around the well before sealing, this method cannot judge the precipitation amount and material usage, and blind construction will cause great waste and may not be effective.

[0007] Therefore, there is an urgent need for a construction method and a waterproof leak-proofing structure that can effectively reduce cost investment and quickly perform waterproofing and leak-proofing. Summary of the Invention

[0008] The purpose of the present invention is to design a cave-type waterproof plugging construction method and structure. The construction method adopted can reduce cost investment while quickly performing good waterproof plugging on the cave-type structure body; the waterproof plugging structure adopted can greatly reduce cost investment and can effectively achieve waterproof plugging effect.

[0009] The present invention is achieved through the following technical solution: a cave-well type waterproof plugging construction method is used to waterproof and plug the cave-well structure body, which is characterized by comprising the following steps:

[0010] 1) Preparation before operation;

[0011] 2) Make and install bags and pipes to form a well-type waterproof plugging structure, which specifically includes the following steps:

[0012] 2.1) Customize the bag based on the size of the well structure, and reserve three triangular holes on the bag at different wellhead sides of the well structure. Two of the holes in the bag are further reserved with corresponding through holes.

[0013] 2.2) Multiple pull rings are provided on the surface of the bag facing the wellhead of the well structure body;

[0014] 2.3) Use three pipes to penetrate the three holes respectively. The two pipes located at the opposite holes are further passed through the bag. The outer surfaces of the pipes are bonded and sealed firmly at the contact points with the holes and the opposite holes.

[0015] 2.4) Install brackets on the three pipes that need to be exposed on the wellhead side of the tunnel structure; install limit brackets on the three pipes located inside the tunnel structure at the preset expansion limit of the bag;

[0016] 3) Attach a rope to the pull ring and slowly place the well-type waterproof plugging structure into the well structure body so that the height between the limit frame and the wellhead position of the well structure body is 1~1.5m. Then fix the bracket on the plane and fix the rope to the bracket and / or the plane;

[0017] 4) Open all valves on the three pipes, then connect the pipe that has not been perforated to the grouting machine and inject the prepared quick-setting cement slurry into the bag at a pressure of 0.2-1 MPa. The bag will expand and adhere to the inner wall of the well structure under the filling action of the quick-setting cement slurry to form a bag grouting layer;

[0018] 5) After closing the valve on the deepest pipe in the well structure, connect the pipe to the grouting machine, then open the valve and inject polyurethane material at a pressure of 0.5~2MPa;

[0019] 6) While pouring the polyurethane material, observe the other pipe that passes through the perforation. When slurry flows out of the pipe and stabilizes for 2 to 3 minutes, close the valve of the pipe. Continue grouting the pipe that is poured with polyurethane material for 2 to 3 minutes, then stop grouting and close the valve on the pipe.

[0020] 7) When the polyurethane grouting layer and the bag grouting layer have solidified to the required strength and are observed to be water-tight, fill the upper part of the bag grouting layer with rigid material to form a rigid material grouting layer.

[0021] In order to further better implement the hole-well type waterproof plugging construction method described in the present invention, the following setting method is particularly adopted: the valves on the three pipes are set in step or / and the hole-well type waterproof plugging structure is placed in the hole-well structure body and fixed thereafter.

[0022] In order to further better realize the hole-type waterproof plugging construction method described in the present invention, the following setting method is particularly adopted: the three pipes include a grouting pipe A and a drainage pipe that penetrates the holes and the perforations, and a grouting pipe B that only penetrates the holes and has its bottom located in the cloth bag.

[0023] In order to better realize the cave-type waterproofing and plugging construction method described in the present invention, the following setting method is particularly adopted: after the bag expands and fits against the inner wall of the cave structure body, the thickness L3 of the bag grouting layer formed is 1~1.2m; after the bag grouting forms the bag grouting layer, the geometric center of the triangle surrounded by the holes is the center of the cave structure body; the diameter of the pipe is 22~30mm; the length of the pipe without perforation is preferably such that its bottom is located in the middle of the bag grouting layer formed.

[0024] In order to further better implement the cave well type waterproof plugging construction method of the present invention, the following setting is particularly adopted: the step 1) includes:

[0025] 1.1) Construction preparation: Provide technical explanations to construction personnel and check whether materials and tools meet the requirements;

[0026] 1.2) Clean the area around the tunnel structure and remove any debris to facilitate construction operations and determine the sealing depth.

[0027] The cave-well type waterproof and leak-proofing structure adopts the cave-well type waterproof and leak-proofing construction method to waterproof and leak-proof the cave-well structure body, including a polyurethane grouting layer, a bag grouting layer and a rigid material grouting layer arranged from bottom to top. At least a grouting pipe A, a grouting pipe B and a drainage pipe arranged in a triangular shape are also arranged through the rigid material grouting layer. A bracket for the limited grouting pipe A, the grouting pipe B and the drainage pipe is also provided on the outside of the cave-well structure body, and the bracket is supported on the external plane of the wellhead of the cave-well structure body.

[0028] In order to further better realize the cave-type waterproof sealing structure described in the present invention, the following setting structure is particularly adopted: the grouting pipe A penetrates the polyurethane grouting layer, the bag grouting layer and the rigid material grouting layer, and exceeds the polyurethane grouting layer; the bottom of the grouting pipe B is located in the bag grouting layer; the drainage pipe penetrates the polyurethane grouting layer, the bag grouting layer and the rigid material grouting layer.

[0029] In order to further better realize the cave-type waterproof sealing structure described in the present invention, the following setting structure is particularly adopted: a limit frame is also provided on the top of the bag grouting layer, and the limit frame is fixed on the grouting pipe A, grouting pipe B and drainage pipe.

[0030] In order to further better realize the cave well type waterproof sealing structure described in the present invention, the following setting structure is particularly adopted: the distance L4 between the bottom of the drainage pipe and the bottom of the bag grouting layer is 0.3~0.35m.

[0031] In order to further better realize the cave well type waterproof plugging structure described in the present invention, the following setting structure is particularly adopted: the distance L1 between the bottom of the grouting pipe A and the bottom of the bag grouting layer is 1~1.5m.

[0032] In order to further better realize the cave-well waterproof plugging structure described in the present invention, the following setting structure is particularly adopted: the thickness L3 of the bag grouting layer is 1~1.2m.

[0033] In order to further better realize the cave well type waterproof plugging structure described in the present invention, the following setting structure is particularly adopted: the thickness L2 of the rigid material grouting layer is 1~1.5m.

[0034] In order to further better realize the cave-well type waterproof sealing structure described in the present invention, the following setting structure is particularly adopted: the grouting pipe A, grouting pipe B and drainage pipe are arranged in an equilateral triangle, and the center of the equilateral triangle is the center of the cave-well structure body.

[0035] In order to further better realize the cave-well waterproof sealing structure described in the present invention, the following setting structure is particularly adopted: a pull ring is also provided on the upper surface of the bag of the bag grouting layer, and a rope connected to the bracket and / or the plane is provided on the pull ring.

[0036] In order to further better realize the cave well type waterproof sealing structure described in the present invention, the following setting structure is particularly adopted: the bracket is welded to the grouting pipe A, the grouting pipe B and the drainage pipe.

[0037] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0038] The present invention can reduce cost investment and effectively waterproof and stop leakage of the well structure body.

[0039] When the present invention is implemented, the blocking time can be greatly shortened.

[0040] The present invention can avoid the situation in the prior art whereby the concrete and the soil cannot be tightly bonded, and temperature and settlement changes easily cause displacement, thereby leading to water seepage.

[0041] The present invention solves the problems of hole size, depth, and shape, and water seepage will not occur after blocking, and the surrounding soil can be reinforced. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a structural schematic diagram (cross-sectional view) of the present invention.

[0043] Figure 2 This is a layout diagram of various tubes of the present invention.

[0044] Figure 3 It is a schematic structural diagram of the present invention (stereoscopic view).

[0045] Among them, 1-hole structure body, 2-polyurethane grouting layer, 3-bag grouting layer, 4-rigid material grouting layer, 5-grouting pipe A, 6-grouting pipe B, 7-drainage pipe, 8-bracket, 9-limiting frame, 10-bag, 11-plane. DETAILED DESCRIPTION

[0046] The present invention will be further described in detail below with reference to the examples, but the embodiments of the present invention are not limited thereto.

[0047] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention.

[0048] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms, etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0049] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0050] In the present invention, unless otherwise expressly specified or limited, terms such as "install," "connect," "connect," "set," "lay out," and "fix" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration. The specific means used are not limited to various conventional mechanical connection methods such as screw connections, interference fits, rivets, and thread-assisted connections. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0051] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0052] It is worth noting that: in this application, when certain known technologies or conventional technical means need to be applied in the field, the applicant may not have specifically explained in the text what kind of technical means the known technologies and / or conventional technical means are. However, it cannot be considered that this application does not comply with Article 26, paragraph 3 of the Patent Law because the technical means are not specifically disclosed in the text.

[0053] Note: The attached figure takes a circular well structure as an example, but it should not be taken for granted that the present invention can only be used for a circular well structure or a well that must be vertically straight. Obviously, the technical solution can also be applied to non-circular wells and wells with curved structures (that is, as long as water emerges from the well opening and only the well opening needs to be blocked).

[0054] Example 1:

[0055] like Figures 1 to 3 As shown, the cave-well type waterproof plugging construction method is used to waterproof and plug the cave-well structure body 1, which is characterized by comprising the following steps:

[0056] 1) Preparation before operation;

[0057] 2) Fabricate and install the bag 10 and pipes (including the grouting pipe A5, the grouting pipe B6 and the drainage pipe 7) to form a well-type waterproof plugging structure, specifically including the following steps:

[0058] 2.1) Customize the bag 10 based on the size of the well structure 1 and reserve three triangular holes (preferably equilateral triangles) on the bag 10 on the wellhead side of the well structure. Two of the holes are further reserved with corresponding through-holes. That is, two of the holes require holes on both sides of the bag, while the last hole only requires a single side (the side located on the wellhead side) of the bag. The bag 10 is designed to be 1-1.2 meters deep in contact with the sidewall after expansion. That is, the thickness L3 of the bag grouting layer 3 after grouting needs to reach 1-1.2 meters.

[0059] 2.2) A plurality of pull rings are provided on the surface of the cloth bag 10 facing the wellhead side of the well structure body 1;

[0060] 2.3) Use three pipes to penetrate the three holes respectively. The two pipes located at the counter-perforation (grouting pipe A5 and drainage pipe 7) are further passed through the bag 10. The outer surfaces of the pipes are bonded and sealed firmly at the contact points with the holes and the counter-perforation.

[0061] 2.4) Install brackets 8 on the three pipes that need to be exposed on the wellhead side of the well structure body 1. Preferably, the brackets 8 are welded to the three pipes to form a triangular shape. Install limit brackets 9 at the three pipes located within the well structure body 1 where the bag 10 has a preset upper expansion limit. Specifically, install triangular limit brackets 9 on the three pipes located at a depth of 1 to 1.5 m within the well structure body 1.

[0062] 3) Attach a rope to the pull ring (i.e., pass the rope through the pull ring and leave enough length so that the plugging structure can be placed outside the wellhead of the well structure body after it is in place, or tie one end of the rope to the pull ring and place the other end outside the wellhead), and slowly place the well waterproof plugging structure into the well structure body 1, so that the height between the limit frame 9 and the wellhead position of the well structure body 1 is 1-1.5m, and then fix the bracket 8 to the plane 11, preferably using an extended structural member, and fix the rope to the bracket 8 and / or the plane 11, so that the tension of the rope can be used to expand the bag and fix the bag in place;

[0063] 4) Open all the valves on the three pipes, then connect the pipe that is not penetrated by the perforation (grouting pipe B6) to the grouting machine, and inject the prepared quick-setting cement slurry (which has the characteristic of fast solidification speed) into the bag 10 at a pressure of 0.2-1MPa (i.e., the grouting pressure is controlled at 0.2-1MPa). The bag 10 expands and fits the inner wall of the well structure body 1 under the filling action of the quick-setting cement slurry to form the bag grouting layer 3. After the bag 10 is filled, the limit frame 9 provided on the upper part of the bag 10 will expand in all directions and will be closely bonded to the different side walls of the well structure. The advantage of the bag 10 is that it can closely fit the side walls of different shapes;

[0064] 5) After the quick-setting cement slurry in the bag 10 solidifies, water will flow out of the grouting pipe A5 and the drainage pipe C. At this time, close the valve on the deepest pipe (grouting pipe A5) extending into the well structure body 1 and connect the pipe to the grouting machine. Then open the valve and inject polyurethane material at a pressure of 0.5-2MPa (i.e., the grouting pressure is controlled at 0.5-2MPa). Since the density of polyurethane material is lighter than water, it will be pushed up by buoyancy and water pressure and accumulate at the bottom of the bag grouting layer 3;

[0065] 6) While pouring the polyurethane material, observe the other pipe (drain pipe 7) that runs through the opposite perforation. When slurry flows out of this pipe and stabilizes for 2-3 minutes, close the valve of this pipe. Continue grouting the pipe (grouting pipe A5) that is pouring the polyurethane material for 2-3 minutes, then stop grouting and close the valve on this pipe.

[0066] 7) When the polyurethane grouting layer 2 and the bag grouting layer 3 are cured to the required strength and are observed to be water-tight, the upper part of the bag grouting layer 3 is filled with rigid material to form a rigid material grouting layer 4.

[0067] Example 2:

[0068] This embodiment is further optimized based on the above embodiment, and the parts that are the same as the above technical solutions will not be repeated here. Figures 1 to 3 As shown, in order to better implement the hole-well type waterproof plugging construction method described in the present invention, the following setting method is particularly adopted: the valves on the three pipes are set in step 2 (that is, after the valves are installed, the pipes are passed through the holes, or after passing through the holes and fixed, the valves are set) or / and the hole-well type waterproof plugging structure is placed in the hole-well structure body 1 and fixed (that is, after the hole-well type waterproof plugging structure is put in place and fixed, the valves are installed).

[0069] Example 3:

[0070] This embodiment is further optimized based on any of the above embodiments, and the parts that are the same as the above technical solutions will not be repeated here. Figures 1 to 3 As shown, in order to better realize the hole-type waterproof plugging construction method described in the present invention, the following setting method is particularly adopted: the three pipes include a grouting pipe A5 and a drainage pipe 7 that pass through the holes and the perforations, and a grouting pipe B6 that only passes through the holes and has its bottom located in the bag 10, that is, the grouting pipe A5 and the drainage pipe 7 need to pass through both sides of the bag 10, while the grouting pipe B6 only needs to pass through the bag 10 from the top to leave the bottom inside the bag 10.

[0071] Example 4:

[0072] This embodiment is further optimized based on any of the above embodiments, and the parts that are the same as the above technical solutions will not be repeated here. Figures 1 to 3As shown, in order to better realize the cave-type waterproofing and plugging construction method described in the present invention, the following setting method is particularly adopted: after the cloth bag 10 expands and fits against the inner wall of the cave-well structure body 1, the thickness L3 of the cloth bag grouting layer 3 formed is 1~1.2m; after the cloth bag 10 is grouted to form the cloth bag grouting layer 3, the geometric center of the triangle surrounded by the holes is the center of the cave-well structure body 1; the diameter of the pipe is 22~30mm; the length of the pipe without perforation is preferably such that its bottom is located in the middle of the formed cloth bag grouting layer 3.

[0073] Example 5:

[0074] This embodiment is further optimized based on any of the above embodiments, and the parts that are the same as the above technical solutions will not be repeated here. Figures 1 to 3 As shown, in order to better implement the cave well type waterproof plugging construction method of the present invention, the following setting method is particularly adopted: the step 1) includes:

[0075] 1.1) Construction preparation: Provide technical explanations to construction personnel and check whether materials and tools meet the requirements;

[0076] 1.2) Clean the area around the well structure 1 and remove any debris to facilitate construction operations and determine the plugging depth.

[0077] Example 6:

[0078] This embodiment is further optimized based on any of the above embodiments, and the parts that are the same as the above technical solutions will not be repeated here. Figures 1 to 3 As shown, the cave-well type waterproof sealing structure adopts the cave-well type waterproof plugging construction method to waterproof and plug the cave-well structure body, including a polyurethane grouting layer 2, a bag grouting layer 3 and a rigid material grouting layer 4 arranged from bottom to top, and at least a grouting pipe A5, a grouting pipe B6 and a drainage pipe 7 arranged in a triangular shape are also arranged through the rigid material grouting layer 4. A bracket 8 for limiting the grouting pipe A5, the grouting pipe B6 and the drainage pipe 7 is also provided on the outside of the cave-well structure body 1, and the bracket 8 is supported on the external plane 11 of the wellhead of the cave-well structure body 1, which can reduce cost investment while performing good waterproof and plugging on the cave-well structure body.

[0079] As a preferred setting scheme, the cave-type waterproof plugging construction method and structure include the topmost rigid material grouting layer 4, the bag grouting layer 3 in the middle layer and the polyurethane grouting layer 2 in the bottom layer, and are also provided with a grouting pipe A5, a grouting pipe B6 and a drainage pipe 7 which are convenient for grouting and drainage in the initial stage and can be used as support columns in the later stage. The three are arranged in a triangular shape when set. When set, the grouting pipe A5, the grouting pipe B6 and the drainage pipe 7 need to at least pass through the rigid material grouting layer 4; wherein, when grouting, the grouting pipe A5 is used for grouting of polyurethane material, and the grouting pipe B6 is used for The required slurry is poured into the bag 10, and the drainage pipe 7 is used to discharge the water in the cave structure body 1 during grouting. In order to facilitate grouting and drainage, the grouting pipe A5, the grouting pipe B6 and the drainage pipe 7 will not be misplaced, thereby causing poor grouting effect. A bracket 8 for limiting the grouting pipe A5, the grouting pipe B6 and the drainage pipe 7 is also provided on the outside of the cave structure body 1. A triangular bracket 8 can be used to connect and fix the grouting pipe A5, the grouting pipe B6 and the drainage pipe 7, and the bracket 8 can be supported on the external plane 11 of the wellhead of the cave structure body 1 by objects such as rods or pipes.

[0080] When the cave-type waterproof plugging construction method and structure is used for plugging, the grouting pipe B6 is first used to fill the cloth bag 10 with material, which can quickly form a cloth bag grouting layer 3 that fits the internal shape of the cave structure body 1, thereby quickly achieving the effect of initial waterproof plugging. Moreover, since the shape of the cloth bag 10 is changeable, it can be made to fit the internal shape of the cave structure body 1 when grouting its interior. After the cloth bag grouting layer 3 is formed, the polyurethane material can be poured in from the grouting pipe A5. Since the polyurethane material is obviously lighter than water, it will float up after being poured and fit into the bottom of the cloth bag grouting layer 3. When the polyurethane material is poured until the drain pipe 7 is blocked and water no longer flows out of the drain pipe 7, the polyurethane grouting layer 2 can be considered to be completely formed. At this time, the effect of no water seepage is basically achieved. Then, in order to make the waterproof and leak-proof effect better and form a plane with the same hardness as the outside of the cave structure body, a rigid material grouting layer can be formed on the bag grouting layer 3 with a rigid material. At this point, the waterproof and leak-proofing of the cave structure body 1 is completed. This structure can achieve the waterproof and leak-proof effect without completely sealing the entire cave structure body 1, thereby greatly saving construction time and material costs.

[0081] Example 7:

[0082] This embodiment is further optimized based on any of the above embodiments, and the parts that are the same as the above technical solutions will not be repeated here. Figures 1 to 3As shown, in order to better realize the present invention, the following setting structure is particularly adopted: the grouting pipe A5 passes through the polyurethane grouting layer 2, the bag grouting layer 3 and the rigid material grouting layer 4, and exceeds the polyurethane grouting layer 2; the bottom of the grouting pipe B6 is located in the bag grouting layer 3; the drainage pipe 7 passes through the polyurethane grouting layer 2, the bag grouting layer 3 and the rigid material grouting layer 4.

[0083] As a preferred setting scheme, the grouting pipe A5 needs to penetrate the polyurethane grouting layer 2, the bag grouting layer 3 and the rigid material grouting layer 4, and the bottom should also exceed the polyurethane grouting layer 2; the grouting pipe B6 penetrates the rigid material grouting layer 4 and the bottom should be located in the bag grouting layer 3; the drainage pipe 7 only needs to penetrate the polyurethane grouting layer 2, the bag grouting layer 3 and the rigid material grouting layer 4.

[0084] Example 8:

[0085] This embodiment is further optimized based on any of the above embodiments, and the parts that are the same as the above technical solutions will not be repeated here. Figures 1 to 3 As shown, in order to better realize the present invention, the following setting structure is particularly adopted: a limit frame 9 is also provided on the top of the bag grouting layer 3, and the limit frame 9 is fixed on the grouting pipe A5, the grouting pipe B6 and the drainage pipe 7.

[0086] As a preferred setting scheme, in order to avoid the situation where the bag bulges when grouting in the bag and does not fit the inner wall of the cave structure body 1 to the maximum extent, a limit frame 9 is preferably formed on the grouting pipe A5, the grouting pipe B6 and the drainage pipe 7 by welding at the top of the required height set for the bag grouting layer 3, so that when grouting is carried out in the bag 10 to form the bag grouting layer 3, the bulge will not completely exceed the limit frame 9, so that the bag grouting layer 3 can fit the inner wall of the cave structure body 1 to the maximum extent, thereby forming an effective initial waterproof and leak-proof layer (for quickly blocking large water), so that the polyurethane grouting layer 2 can be formed later.

[0087] Example 9:

[0088] This embodiment is further optimized based on any of the above embodiments, and the parts that are the same as the above technical solutions will not be repeated here. Figures 1 to 3 As shown, in order to further better implement the present invention, the following setting structure is particularly adopted: the distance L4 between the bottom of the drainage pipe 7 and the bottom of the bag grouting layer 3 is 0.3~0.35m.

[0089] As a preferred setting scheme, during the setting, the length of the drainage pipe 7 extending into the cave structure body 1 is designed so that the distance L4 between its bottom and the bottom of the bag grouting layer 3 is 0.3~0.35m, that is, the thickness of the polyurethane grouting layer 2 needs to reach 0.3~0.35m.

[0090] Example 10:

[0091] This embodiment is further optimized based on any of the above embodiments, and the parts that are the same as the above technical solutions will not be repeated here. Figures 1 to 3 As shown, in order to further better implement the present invention, the following setting structure is particularly adopted: the distance L1 between the bottom of the grouting pipe A5 and the bottom of the bag grouting layer 3 is 1~1.5m.

[0092] As a preferred arrangement, during arrangement, the length of the grouting pipe A5 extending into the cave structure body 1 is designed so that the distance L1 between the bottom thereof and the bottom of the bag grouting layer 3 is 1 to 1.5 m.

[0093] Example 11:

[0094] This embodiment is further optimized based on any of the above embodiments, and the parts that are the same as the above technical solutions will not be repeated here. Figures 1 to 3 As shown, in order to further better implement the present invention, the following setting structure is particularly adopted: the thickness L3 of the bag grouting layer 3 is 1~1.2m.

[0095] As a preferred setting scheme, during setting, after the bag 10 is filled with slurry and expands to form the bag grouting layer 3 structure, its thickness L3 needs to reach 1~1.2m.

[0096] Example 12:

[0097] This embodiment is further optimized based on any of the above embodiments, and the parts that are the same as the above technical solutions will not be repeated here. Figures 1 to 3 As shown, in order to further better implement the present invention, the following configuration structure is particularly adopted: the thickness L2 of the rigid material grouting layer 4 is 1-1.5 m.

[0098] As a preferred arrangement, during arrangement, the thickness L2 of the rigid material grouting layer 4 formed by the rigid material needs to reach 1-1.5 m.

[0099] Example 13:

[0100] This embodiment is further optimized based on any of the above embodiments, and the parts that are the same as the above technical solutions will not be repeated here. Figures 1 to 3 As shown, in order to better realize the present invention, the following setting structure is particularly adopted: the grouting pipe A5, the grouting pipe B6 and the drainage pipe 7 are arranged in an equilateral triangle, and the center of the equilateral triangle is the center of the cave structure body 1.

[0101] As a preferred setting scheme, when setting, the grouting pipe A5, the grouting pipe B6 and the drainage pipe 7 are arranged in an equilateral triangle, and the center of the equilateral triangle is located at the center of the cave structure body 1, that is, if the cave structure body 1 is a circular hole (its radius is r), then the center of the circle is the center of the equilateral triangle formed by the grouting pipe A5, the grouting pipe B6 and the drainage pipe 7 (that is, the grouting pipe A5, the grouting pipe B6 and the drainage pipe 7 are respectively located at r / 2 to form an equilateral triangle). When setting, the grouting pipe A5, the grouting pipe B6 and the drainage pipe 7 are not limited to forming an equilateral triangle, but the equilateral triangle is a preferred setting scheme; and the cave structure body is not limited to a circle.

[0102] Example 14:

[0103] This embodiment is further optimized based on any of the above embodiments, and the parts that are the same as the above technical solutions will not be repeated here. Figures 1 to 3 As shown, in order to better realize the present invention, the following setting structure is particularly adopted: the upper surface of the bag 10 of the bag grouting layer 3 is also provided with a pull ring, and a rope connected to the bracket 8 and / or the plane 11 is provided on the pull ring.

[0104] In order to facilitate the rapid expansion of the bag 10 during bag grouting, a plurality of pull rings can be provided on the upper surface of the bag 10 , and ropes connected to the bracket 8 and / or the plane 11 are provided on the pull rings.

[0105] Example 15:

[0106] This embodiment is further optimized based on any of the above embodiments, and the parts that are the same as the above technical solutions will not be repeated here. Figures 1 to 3 As shown, in order to better realize the present invention, the following setting structure is particularly adopted: the bracket 8 is welded to the grouting pipe A5, the grouting pipe B6 and the drainage pipe 7.

[0107] As a preferred arrangement, the bracket 8 is welded to the grouting pipe A5, the grouting pipe B6 and the drainage pipe 7, thereby forming a triangular structure.

[0108] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification or equivalent change made to the above embodiment based on the technical essence of the present invention is within the scope of protection of the present invention.

Claims

1. A cave-well type waterproofing and leak-proofing construction method for waterproofing and leak-proofing a cave-well structure body (1), characterized by: The steps include: 1) Preparation before operation; 2) Making and installing the bag (10) and the pipe to form a well-shaped waterproof plugging structure, specifically comprising the following steps: 2.1) Customize the cloth bag (10) according to the size of the well structure body (1), and reserve three triangular holes on the cloth bag (10) on the wellhead side of the well structure body (1), and further reserve corresponding through holes on two of the holes on the cloth bag (10); 2.2) A plurality of pull rings are provided on the surface of the cloth bag (10) facing the wellhead side of the well structure body (1); 2.3) Using three pipes to penetrate the three holes respectively, the two pipes located at the opposite holes further pass through the bag (10), and the outer surfaces of the pipes are bonded and sealed firmly at the contact points with the holes and the opposite holes; 2.4) Setting brackets (8) on the three pipes that need to be exposed on the wellhead side of the well structure body (1); setting limit brackets (9) at the positions of the three pipes where the bag (10) inside the well structure body (1) has a preset expansion upper limit; 3) Attach a rope to the pull ring and slowly place the well-type waterproof plugging structure into the well structure body (1) so that the height between the limit frame (9) and the wellhead position of the well structure body (1) is 1 to 1.5 meters, and then fix the bracket (8) on the plane (11), and fix the rope on the bracket (8) and / or the plane (11); 4) All valves on the three pipes are opened, and then the pipe that is not penetrated is connected to the grouting machine, and the prepared quick-setting cement slurry is injected into the bag (10) at a pressure of 0.2-1 MPa. The bag (10) expands and adheres to the inner wall of the well structure body (1) under the filling action of the quick-setting cement slurry to form a bag grouting layer (3); 5) After closing the valve on the deepest pipe extending into the well structure body (1), the pipe is connected to the grouting machine, and then the valve is opened to inject polyurethane material at a pressure of 0.5 to 2 MPa; 6) While pouring the polyurethane material, observe the other pipe that passes through the perforation. When slurry flows out of the pipe and stabilizes for 2 to 3 minutes, close the valve of the pipe. Continue grouting the pipe that is pouring the polyurethane material for 2 to 3 minutes, then stop grouting and close the valve on the pipe. 7) When the polyurethane grouting layer (2) and the bag grouting layer (3) are cured to the required strength and are observed to be water-proof, the upper part of the bag grouting layer (3) is filled with a rigid material to form a rigid material grouting layer (4).

2. The cave well type waterproof plugging construction method according to claim 1, characterized in that: The valves on the three pipes are set in step (2) or / and the well-type waterproof plugging structure is placed in the well structure body (1) and fixed therein.

3. The cave well type waterproof plugging construction method according to claim 1, characterized in that: The three pipes include a grouting pipe A (5) and a drainage pipe (7) that penetrate the hole and the perforation, and a grouting pipe B (6) that only penetrates the hole and has its bottom located in the bag (10).

4. The cave well type waterproof plugging construction method according to claim 1, characterized in that: After the bag (10) expands and fits against the inner wall of the well structure body (1), the thickness L3 of the bag grouting layer (3) formed is 1 to 1.2 m; after the bag (10) is grouted to form the bag grouting layer (3), the geometric center of the triangle formed by the holes is the center of the well structure body (1); the diameter of the pipe is 22 to 30 mm; the length of the pipe without a perforation is such that its bottom is located in the middle of the bag grouting layer (3) formed.

5. The cave well type waterproof plugging construction method according to claim 1, characterized in that: The step 1) comprises: 1.1) Construction preparation: Conduct technical briefings to construction personnel and check whether materials and tools meet the requirements; 1.2) Clean the area around the well structure (1) and remove any debris to facilitate construction operations and determine the plugging depth.

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