Plugging wall construction method

Abstract

The invention provides a blocking wall construction method which comprises a force supporting device and an underground pipe gallery body, and the force supporting device is located in the underground pipe gallery body and supports the underground pipe gallery body. The method comprises the steps that firstly, an air bag is placed at the position, needing to be sealed, of the underground pipe gallery, then rapid inflation is conducted for sealing, then, an organic reinforcing net is bonded to the surface of the air bag through a rapid connection structure, the distance of 10 cm is kept or the organic reinforcing net is fixed to the surface of a reinforcing steel bar grid, slurry throwing slurry is prepared, slurry throwing construction is completed, and the sealing effect is achieved. And meanwhile, when the temporary sealing wall is built, a force supporting device is placed in the underground pipe gallery, and finally appropriate maintenance measures are taken for the hardened sealing wall, so that the problems that an existing sealing wall is poor in sealing effect and slow in building forming, and cracks are likely to appear in the construction process are solved.

Description

Technical Field

[0001] The invention relates to the technical field of underground pipe gallery construction, and in particular to a blocking wall construction method. Background Art

[0002] During the construction of underground pipe corridors, if some areas are not tightly sealed, it will cause ventilation disturbance and leakage of toxic and harmful gases. The main way to isolate the area is to build a blocking wall.

[0003] The existing blocking walls still use wood, masonry and concrete. This kind of blocking wall has rich practical technology and is well known by many designers. However, the sealing effect of wood blocking walls is poor, the material transportation task of masonry and concrete blocking walls is heavy, the construction time of the blocking wall is long, and the rigid wall has no buffering capacity and is prone to cracking and failure under the influence of dynamic pressure; The existing blocking walls are usually built in a masonry manner, which has the problem of slow construction speed, especially the permanent blocking walls. At the same time, due to the irregular internal shape of the underground pipe gallery, the existing blocking walls and the surrounding contact will not be sealed tightly, and there will still be problems of leakage and air permeability. In addition, when other underground pipe galleries are constructed, certain vibrations will be caused. When the vibrations are transmitted to the blocking walls, gaps will easily appear between the blocking walls and the underground pipe gallery.

[0004] Therefore, the present application provides a blocking wall construction method to meet the needs. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a blocking wall construction method. First, an air bag is placed at the location of an underground pipe gallery that needs to be sealed, and then it is quickly inflated for sealing. Then, an organic reinforcing mesh is bonded to the surface of the air bag through a quick-connect structure and maintained at a distance of 10 cm or fixed on the surface of the reinforcing steel mesh. Then, slurry is prepared and slurry construction is completed. When the construction is completed and the slurry hardens to have a certain strength, the gas in the air bag is released and the flexible container is taken out for reuse next time. At the same time, when building a temporary sealing wall, a support device is placed in the underground pipe gallery to consume the vibration of the underground pipe gallery body during mining construction. Finally, secondary grouting is performed on the outer wall of the support device. Finally, appropriate maintenance measures are taken for the hardened blocking wall to solve the problems of poor sealing effect, slow construction and easy occurrence of gaps in the existing sealing wall during construction.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: A blocking wall construction method comprises a force support device and an underground pipe gallery body, wherein the force support device is located inside the underground pipe gallery body and supports the underground pipe gallery body, wherein the top plate, the bottom plate and the two sides of the underground pipe gallery body are all provided with receiving grooves, and four groups of receiving grooves are located on the same surface, wherein an air bag is arranged inside the underground pipe gallery body, wherein the side wall of the air bag is in active contact with the right section of the receiving groove, wherein the surface of the left side wall of the air bag is provided with a reinforcing net, wherein a slurry throwing wall body 1 is arranged inside the receiving groove, and the slurry throwing wall body 1 is sprayed onto the reinforcing net by a spraying machine A waterproof geotextile 1 is installed on one side wall of the slurry-throwing wall, the support device is installed in four groups of receiving grooves and in contact with the waterproof geotextile 1, a waterproof geotextile 2 is installed on the other side of the support device, a reinforcing net is arranged on the waterproof geotextile 2, a slurry-throwing wall 2 is arranged on the reinforcing net, the slurry-throwing wall 2 is located inside the underground pipe gallery, and the slurry-throwing wall 2 is formed by spraying slurry onto the reinforcing net of the waterproof geotextile 2 by a spraying machine, and the slurry-throwing wall 1 and the slurry-throwing wall 2 are both sealed and fixedly connected to the inner wall of the underground pipe gallery.

[0007] Optionally, the force supporting device includes base bricks, which are provided with four groups and are respectively fixedly connected to the inner walls of the four groups of receiving grooves. The base bricks are provided with rebar insertion holes, and the rebar insertion holes are provided with multiple groups and are arranged in a linear array. EPS module body 1 and EPS module body 2 are provided around the space formed by the four groups of receiving grooves. The EPS module body 1 and EPS module body 2 are provided with multiple groups and are arranged at intervals in pairs. The EPS module body 1 and EPS module body 2 are used in conjunction with each other, and the adjacent EPS module body 1 and EPS module body 2 are fixedly connected by bolts. Steel bars are fixedly installed on the outer walls of the EPS module body 1 and EPS module body 2, and the steel bars are plugged into the corresponding rebar insertion holes, and the EPS module body 1 and EPS module body 2 are installed in conjunction with the corresponding base bricks.

[0008] Optionally, the four groups of EPS module bodies located on the innermost side are all fixed with L-shaped covering plates by bolts, and the inner wall of the L-shaped covering plate is fixedly installed with an elastic double buckle plate, and the elastic double buckle plates are provided with two groups arranged in an L shape, and the inner walls of the two groups of elastic double buckle plates located on the same side are cooperated with the same sliding plate, and slight displacement can occur between the sliding plate and the elastic double buckle plates, and oblique angle edges are fixedly installed on both sides of the sliding plate, and the oblique angle edges can be used in conjunction with the elastic double buckle plate bayonet grooves, and the outer walls of the two groups of elastic double buckle plates located on the same side are plugged with the same bridge-type connecting plate, and the side walls of the bridge-type connecting plate are fixedly connected to the inner wall of the L-shaped covering plate, and the bridge-type connecting plate is made of elastic metal plate.

[0009] Optionally, a force unloading component is provided in the middle of the space formed by the four groups of receiving grooves, and the force unloading component includes a return-shaped block, the return-shaped block is located at the center of the space formed by the four groups of receiving grooves, a partition is fixedly installed on the inner wall in the middle of the return-shaped block, and the outer walls on both sides of the return-shaped block are fixedly installed with a return-shaped pyramid-shaped seat, and the top and bottom inner walls of the return-shaped pyramid-shaped seat are provided with inner sliding grooves, and the inner wall of the return-shaped pyramid-shaped seat is slidably connected with a slider through the inner sliding groove, and a spring 1 is fixedly installed on the front end wall of the slider, and the other end of the spring 1 is fixedly connected to the inner wall of the return-shaped pyramid-shaped seat, and an I-beam push steel is fixedly installed on the end wall of the slider, and an I-beam extension steel 1 is fixedly installed on the end wall of the I-beam push steel by bolts, and the end wall of the I-beam extension steel 1 is fixedly connected to the corresponding base brick.

[0010] Optionally, the top and bottom inner walls of the circular block are slidably connected to a push seat, the four corners of the top of the push seat are rotatably connected to connecting rods, the other end of the connecting rod on the same side is rotatably connected to the corresponding side wall of the slider, a second spring is fixedly installed at the bottom of the push seat, and the other end of the second spring is fixedly connected to the partition, two I-beam extension steels are fixedly installed on the top of the push seat, and the end walls of the second I-beam extension steels are fixedly connected to the corresponding base bricks, and assembly plates are installed on both sides of the circular block, and the assembly plates are encapsulated as the support device.

[0011] Optionally, a steel bar frame is fixedly installed on the inner wall of the receiving groove, and the reinforcing mesh is installed in cooperation with the steel bar frame.

[0012] Optionally, a blocking wall construction method further includes a specific construction plan as follows: S1: Determine the location of the blocking wall on the top plate, bottom plate and two sides of the underground pipe gallery, and mark the lines. Cut the groove according to the marked positions, so that the width of the receiving groove is 500~1000mm and the depth is 500mm; S2: The front end surface of the airbag is arranged on the inner side of the receiving groove, and the airbag is inflated by using the air supply system so that the airbag is closely combined with the top plate, bottom plate and two sides of the underground pipe gallery; S3: An organic reinforcement net is set on the surface of the airbag, and the mesh size of the reinforcement net is 50mm * 50mm, the mesh diameter is 2mm, the distance between the reinforcement mesh and the airbag surface is 100mm~200mm, and the reinforcement mesh extends to the top plate, bottom plate and two sides of the underground corridor, and 500mm is reserved in the middle of the proposed design blocking wall * 500mm blank; S4: Use a forced mixer to mix the slurry material and water into a uniform slurry according to the designed mix ratio. The main mix ratio of the shotcrete is: sulphoaluminate cement: fine sand: water reducer: water: accelerator: organic fiber: rubber powder = 1000: 1000: 2: 350: 2: 0.5: 0.5: 1. Its performance is that the initial setting time is less than 10min, the final setting time is less than 30min, and the 2h compressive strength is greater than 20MPa; S5: Perform slurry throwing construction. The construction range of slurry throwing is the range of the reinforcement mesh. The construction thickness of slurry throwing is 100mm. The order of slurry throwing is from bottom to top and from left to right. The width of each slurry throwing is 300~500mm, and the reserved area in the middle is not sprayed. S6: 2 hours after the first layer of slurry is applied, the slurry is completely hardened, and then the gas in the airbag is released and taken out of the reserved hole. A layer of encrypted reinforcement mesh is laid on the surface of the reserved hole, covering 100mm from the edge of the reserved hole, and the mesh size is 2mm. * 2mm, the mesh wire diameter is 0.5mm, and subsequent slurry throwing construction is carried out to seal the reserved holes; S7: After the first slurry throwing is completed, if the surface of the first layer of hardened slurry is too dry, it is necessary to spray water to moisten it before the second layer of slurry throwing. The interval between each subsequent layer of slurry throwing shall not exceed 120 minutes, until the thickness of the blocking wall reaches the designed thickness, which is generally greater than 200mm, thus forming a slurry throwing wall. S8: After the slurry-throwing wall body 1 is solidified, a waterproof geotextile 1 is laid on its surface, and four groups of base bricks are fixed to four groups of receiving grooves with concrete, and the EPS module body 1 and the EPS module body 2 are pre-installed with bolts, and then the assembled EPS module body 1 and the EPS module body 2 are installed on the corresponding base bricks through steel bars, and after the force unloading assembly is assembled, the I-beam extension steel 1 and the I-beam extension steel 2 are fixed to the corresponding base bricks, and finally the assembly plate is used to complete the packaging of the force support device; S9: After the installation of the support device is completed, a second waterproof geotextile is laid on the outside of the support device, and a second set of reinforcing nets are set on the surface of the second waterproof geotextile. Thereafter, the slurry throwing operation is repeated to form a second slurry throwing wall, thereby completing the construction of the entire underground pipe gallery sealing wall.

[0013] Compared with the prior art, the present invention has at least the following beneficial effects:

[0014] In the above scheme, the airbag is first placed at the location of the underground corridor that needs to be sealed, and then quickly inflated for sealing. Then, the organic reinforcement mesh is bonded to the surface of the airbag through a quick-connect structure and maintained at a distance of 10 cm or fixed on the surface of the reinforced steel mesh. Then, the slurry is prepared and the slurry construction is completed. When the construction is completed and the slurry hardens to a certain strength, the gas in the airbag is released and the flexible container is taken out for reuse next time. At the same time, when constructing a temporary sealing wall, a support device is placed in the underground corridor to consume the vibration of the underground corridor body during mining construction. Finally, secondary grouting is carried out on the outer wall of the support device. Finally, appropriate maintenance measures are taken for the hardened sealing wall.

[0015] By setting up a force-supporting device, when construction is carried out in another underground pipe gallery, the underground pipe gallery with a sealed wall will be vibrated. When the two sides of the underground pipe gallery vibrate, the vibration energy will be transmitted to the I-beam push steel through the I-beam extension steel 1, thereby pushing the slider inward to make the spring 1 reciprocate, thereby suppressing the vibration of the two sides of the underground pipe gallery. Similarly, when the top and bottom of the underground pipe gallery vibrate, the vibration energy will be transmitted to the push seat through the I-beam extension steel 2, causing the spring 2 to reciprocate, thereby suppressing the vibration of the top and bottom of the underground pipe gallery. When the underground pipe gallery vibrates due to external construction, the underground pipe gallery will transfer the vibration to the base bricks, and then transfer the vibration to EPS module body 1 and EPS module body 2 through the steel bars, so that EPS module body 1 and EPS module body 2 absorb most of the vibration, and at the same time transfer the remaining vibration energy to the elastic double buckle plate. After being absorbed by the main body of the elastic double buckle plate, the remaining vibration energy is transferred to the sliding plate, causing the sliding plate to vibrate slightly and displace, thereby greatly reducing the vibration of the underground pipe gallery caused by external construction and preventing the collapse of the slurry-throwing wall.

[0016] The sealing wall formed by this method has the advantages of fast construction speed. The airbag can be inflated in a very short time to achieve the sealing effect of the underground pipeline corridor. The organic reinforcement net is connected by a quick-bonding structure, and the construction speed is fast. It can also effectively increase the strength and toughness of the sealing wall. At the same time, since the airbag is a flexible body, it can be applied to underground pipeline corridors of various shapes. At the same time, the slurry material can also be constructed on surfaces with random shapes and poor flatness. Therefore, this technology has good adaptability and can increase the density of the sealing wall and reduce the risk of gaps and holes. At the same time, the slurry material has high early strength and can harden quickly, thereby realizing rapid construction, and the good bonding effect can achieve a good sealing effect. After the slurry material hardens and has a certain strength, the flexible container can be taken out by deflating to achieve the purpose of reuse, thereby reducing construction costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and to enable those skilled in the relevant art to make and use the invention.

[0018] Figure 1 It is a three-dimensional structural schematic diagram of a blocking wall construction method; Figure 2 It is a schematic diagram of the installation structure of the support device in the underground pipe gallery; Figure 3 It is a schematic diagram of the installation structure of the airbag and the slurry throwing wall; Figure 4 is a structural schematic diagram of the support device; Figure 5 Schematic diagram of the connection structure between the base brick and EPS module body 1 and EPS module body 2; Figure 6 It is a schematic diagram of the installation structure of EPS module body 1, EPS module body 2 and L-shaped sealing plate; Figure 7 It is an assembly structure diagram of EPS module body 1 and EPS module body 2; Figure 8 It is a schematic diagram of the connection structure between the sliding plate and the elastic double buckle plate; Fig. 9 This is the installation position diagram of the force unloading component; Fig.10 is a structural schematic diagram of the force unloading component; Fig.11 This is a disassembled diagram of the force unloading component; Fig.12 It is a schematic diagram of the installation structure of the U-shaped pyramid seat and the U-shaped block; Fig.13 It is a structural diagram of the connection between the slider and the pyramid-shaped seat; Fig.14 It is the connection structure diagram of the push seat and the return block; Fig.15 It is the connection structure diagram of the L-shaped sealing plate and the force unloading assembly; Fig.16 for Fig.15 The enlarged view of point A in the middle; Fig.17 for Fig.15 The enlarged view of point B in the middle; Fig.18 The construction component drawing of the temporary blocking wall; Fig.19 This is the construction component drawing of the permanent blocking wall.

[0019] Reference numerals: Support device 100, base brick 110, reinforcing bar hole 111, EPS module body 1 112, EPS module body 2 113, reinforcing bar 114, L-shaped cover plate 120, elastic double buckle plate 121, sliding plate 122, oblique retaining angle edge 123, bridge type connecting plate 124, unloading assembly 130, return block 131, partition 132, return tower seat 133, inner slide groove 134, slide block 135, elastic Spring one 136, I-beam push steel 137, I-beam extension steel one 138, push seat 140, connecting rod 141, spring two 142, I-beam extension steel two 143, assembly plate 150, underground pipe gallery body 200, receiving trough 210, air bag 220, reinforcement net 230, slurry throwing wall one 240, waterproof geotextile one 250, waterproof geotextile two 260, slurry throwing wall two 270, steel bar frame 300.

[0020] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0021] The following is a detailed description of a blocking wall construction method provided by the present invention in conjunction with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternative methods to implement some known technologies; and the accompanying drawings are only for a more specific description of the embodiments, and are not intended to specifically limit the present invention.

[0022] Example 1, during the construction of a temporary blocking wall: Figures 1 to 18As shown, an embodiment of the present invention provides a blocking wall construction method, including a support device 100 and an underground pipe gallery body 200, the support device 100 is located inside the underground pipe gallery body 200, and supports the underground pipe gallery body 200, the top plate, the bottom plate and the two sides of the underground pipe gallery body 200 are all provided with receiving grooves 210, and four groups of receiving grooves 210 are located on the same surface, and an air bag 220 is arranged inside the underground pipe gallery body 200, and the side wall of the air bag 220 is in active contact with the right section of the receiving groove 210, and the air bag 220 can be very The air bag 220 is inflated in the shortest possible time to achieve the sealing effect of the underground pipe gallery. A reinforcing net 230 is arranged on the left wall surface of the air bag 220. The reinforcing net 230 is an organic mesh cloth. It can be attached to the surface of the air bag 220 before construction, and separated from the air bag 220 after construction, and left in the hardened slurry or after the first layer of slurry throwing construction, the reinforcing net 230 is quickly laid on its surface, and then the subsequent slurry throwing construction is carried out to strengthen and toughen the blocking wall. A slurry throwing wall 240 is arranged inside the receiving groove 210, and the slurry throwing wall 240 is arranged inside the receiving groove 210. The wall 240 is formed by spraying slurry onto the reinforcing mesh 230 by a spraying machine. The slurry throwing material is a non-invasive sealing material modified by organic matter and organic fiber, which has the advantages of low cost, good adhesion, rapid setting and early strength, good sealing, etc., and has a certain strength after the slurry throwing material hardens. The airbag 220 can be taken out by deflating to achieve the purpose of repeated use, thereby reducing the construction cost. The side wall of the slurry throwing wall 240 is installed with a waterproof geotextile 250, and the support device 100 is installed on the four groups of receiving slots 2 10, and in contact with the waterproof geotextile 1 250, a waterproof geotextile 2 260 is installed on the other side of the support device 100, a reinforcing mesh 230 is arranged on the waterproof geotextile 260, a slurry-throwing wall 270 is arranged on the reinforcing mesh 230, the slurry-throwing wall 270 is located inside the underground pipe gallery 200, and the slurry-throwing wall 270 is formed by spraying slurry onto the reinforcing mesh 230 of the waterproof geotextile 260 by a spraying machine, and the slurry-throwing wall 1 240 and the slurry-throwing wall 270 are both sealed and fixedly connected to the inner wall of the underground pipe gallery 200.

[0023] In this embodiment, if Figures 4 to 9As shown, the support device 100 includes a base brick 110, and the base brick 110 is provided with four groups, and is respectively fixedly connected to the inner walls of the four groups of receiving grooves 210. The material of the base brick 110 is a foam brick, which can be quickly disassembled. The base brick 110 is provided with a rib insertion hole 111, and the rib insertion hole 111 is provided with a plurality of groups and arranged in a linear array. The space formed by the four groups of receiving grooves 210 is surrounded by EPS module bodies 112 and EPS module bodies 2 113. EPS module bodies 1 112 and EPS module bodies 2 113 are provided with a plurality of groups, and are arranged in pairs. The EPS module The block body 112 and the EPS module body 2 113 are used in conjunction with each other, and the adjacent EPS module bodies 112 and 113 are fixedly connected by bolts. The outer walls of the EPS module bodies 112 and 113 are fixedly installed with steel bars 114, and the steel bars 114 are plugged into the corresponding steel bar insertion holes 111. The EPS module bodies 112 and 113 are installed in conjunction with the corresponding base bricks 110. The EPS module bodies 112 and 113 can be quickly disassembled and assembled, thereby facilitating the disassembly of the sealed wall.

[0024] The four groups of EPS module bodies 112 located on the innermost side are all fixedly installed with L-shaped sealing plates 120 by bolts. The inner wall of the L-shaped sealing plate 120 is fixedly installed with an elastic double buckle plate 121. The elastic double buckle plate 121 is spliced ​​by two groups of elastic plates, which can absorb the impact force caused by the wall. The elastic double buckle plate 121 has two groups arranged in an L shape. The inner walls of the two groups of elastic double buckle plates 121 located on the same side are matched with the same sliding plate 122. Slight displacement can occur between the sliding plate 122 and the elastic double buckle plate 121. Oblique retaining angle edges 123 are fixedly installed on both sides of the sliding plate 122. The oblique retaining angle edges 123 can be used in conjunction with the bayonet grooves of the elastic double buckle plates 121. The outer walls of the two groups of elastic double buckle plates 121 located on the same side are plugged with the same bridge-type connecting plate 124. The side walls of the bridge-type connecting plate 124 are connected to the L The inner wall of the sealing plate 120 is fixedly connected, and the bridge-type connecting plate 124 is made of an elastic metal plate. In the present invention, when the underground pipeline gallery body 200 vibrates due to external construction, the underground pipeline gallery body 200 transfers the vibration to the base brick 110, and transfers the vibration to the EPS module body 1 12 and the EPS module body 2 113 through the steel bar 114, so that the EPS module body 1 112 and the EPS module body 2 113 absorb most of the vibration, and at the same time transfer the remaining vibration energy to the elastic double buckle plate 121, and after being absorbed by the main body of the elastic double buckle plate 121, the remaining vibration energy is transferred to the sliding plate 122, so that the sliding plate 122 undergoes a slight vibration displacement, thereby greatly reducing the vibration of the underground pipeline gallery body 200 caused by external construction, and preventing the collapse of the formed slurry wall.

[0025] As an implementation method in this embodiment, Figures 10 to 14As shown, a force unloading assembly 130 is provided in the middle of the space formed by the four groups of receiving grooves 210. The force unloading assembly 130 includes a return block 131. The return block 131 is located at the center of the space formed by the four groups of receiving grooves 210. A partition 132 is fixedly installed on the inner wall of the middle of the return block 131. The outer walls on both sides of the return block 131 are fixedly installed with a Chinese-shaped pyramid seat 133. The top and bottom inner walls of the Chinese-shaped pyramid seat 133 are both provided with inner grooves 134. The inner wall of the Chinese-shaped pyramid seat 133 is slidably connected with a slider 135 through the inner groove 134. The front end of the slider 135 A spring 136 is fixedly installed on the wall, and the other end of the spring 136 is fixedly connected to the inner wall of the back-shaped tower seat 133, an I-shaped push steel 137 is fixedly installed on the end wall of the slider 135, and an I-shaped extension steel 138 is fixedly installed on the end wall of the I-shaped push steel 137 by bolts, and the end wall of the I-shaped extension steel 138 is fixedly connected to the corresponding base brick 110, and the top and bottom inner walls of the back-shaped block 131 are slidably connected to the push seat 140, and the four corners of the top of the push seat 140 are rotatably connected to the connecting rod 141, and the other end of the connecting rod 141 on the same side is connected to the corresponding The side wall of the slider 135 is rotatably connected, a spring 142 is fixedly installed at the bottom of the push seat 140, and the other end of the spring 142 is fixedly connected to the partition 132, and an I-shaped extension steel 143 is fixedly installed on the top of the push seat 140, and the end wall of the I-shaped extension steel 143 is fixedly connected to the corresponding base brick 110, and an assembly plate 150 is installed on both sides of the return block 131, and the assembly plate 150 is encapsulated for the support device 100. In the present invention, when construction is carried out in another underground pipe gallery, an underground pipe gallery body 200 with a sealed wall will be caused to enter When the two sides of the underground gallery body 200 vibrate, the vibration energy will be transmitted to the I-beam push steel 137 through the I-beam extension steel 138, thereby pushing the slider 135 inward to make the spring 136 reciprocate, thereby suppressing the vibration of the two sides of the underground gallery body 200. Similarly, when the top and bottom of the underground gallery body 200 vibrate, the vibration energy will be transmitted to the push seat 140 through the I-beam extension steel 143, thereby making the spring 142 reciprocate, thereby suppressing the vibration of the top and bottom of the underground gallery body 200.

[0026] The working steps of the technical solution provided in this embodiment are as follows: S1: The blocking wall positions are determined on the top plate, bottom plate and two sides of the underground pipe gallery 200, and lines are drawn. A groove is cut according to the marked positions, so that the width of the receiving groove 210 is 500-1000 mm and the depth is 500 mm; S2: The front end surface of the airbag 220 is arranged inside the receiving groove 210, and the airbag 220 is inflated by using the air supply system, so that the airbag 220 is tightly combined with the top plate, the bottom plate and the two sides of the underground pipe gallery body 200; S3: An organic reinforcing net 230 is arranged on the surface of the airbag 220, and the mesh size of the reinforcing net 230 is 50 mm *50mm, the diameter of the mesh is 2mm, the distance between the reinforcing mesh 230 and the surface of the airbag 220 is 100mm~200mm, and the reinforcing mesh 230 extends to the top plate, bottom plate, and two sides of the underground corridor 200, and 500mm is reserved in the middle part of the proposed design of the blocking wall * 500mm blank; S4: Use a forced mixer to mix the slurry material and water into a uniform slurry according to the designed mix ratio. The main mix ratio of the shotcrete is: sulphoaluminate cement: fine sand: water reducer: water: accelerator: organic fiber: rubber powder = 1000: 1000: 2: 350: 2: 0.5: 0.5: 1. Its performance is that the initial setting time is less than 10min, the final setting time is less than 30min, and the 2h compressive strength is greater than 20MPa; S5: Perform slurry throwing construction. The construction range of slurry throwing is the range of the reinforcement mesh 230. The construction thickness of slurry throwing is 100mm. The order of slurry throwing is from bottom to top and from left to right. The width of each slurry throwing is 300~500mm, and the reserved area in the middle is not sprayed. S6: 2 hours after the first layer of slurry is applied, the slurry is completely hardened, and then the gas in the airbag 220 is released and it is taken out of the reserved hole. A layer of encrypted reinforcement mesh is laid on the surface of the reserved hole, and the laying range is to cover 100mm of the edge of the reserved hole, and the mesh size is 2mm. * 2mm, the mesh wire diameter is 0.5mm, and subsequent slurry throwing construction is carried out to seal the reserved holes; S7: After the first slurry throwing is completed, if the surface of the first layer of hardened slurry is too dry, it is necessary to spray water to moisten it before the second layer of slurry throwing. The interval between each subsequent layer of slurry throwing shall not exceed 120 minutes, until the thickness of the blocking wall reaches the designed thickness, which is generally greater than 200mm, thus forming a slurry throwing wall -240; S8: After the slurry-throwing wall 240 is solidified, a waterproof geotextile 250 is laid on its surface, and four groups of base bricks 110 are fixed to four groups of receiving grooves 210 with concrete, and the EPS module body 112 and the EPS module body 2 113 are pre-installed with bolts, and then the assembled EPS module body 112 and the EPS module body 2 113 are installed on the corresponding base bricks 110 through the steel bars 114. After the force unloading assembly 130 is assembled, the I-beam extension steel 138 and the I-beam extension steel 2 143 are fixed to the corresponding base bricks 110, and finally the assembly plate 150 is used to complete the packaging of the force support device 100; S9: After the support device 100 is installed, a second waterproof geotextile 260 is laid on the outside of the support device 100, and a second set of reinforcing nets 230 are set on the surface of the second waterproof geotextile 260. Thereafter, the slurry throwing operation is repeated to form a second slurry throwing wall 270, thereby completing the construction of the entire underground pipe gallery sealing wall.

[0027] Embodiment 2: When carrying out permanent blocking wall construction, in this embodiment, if Fig.19 As shown, a steel bar frame 300 is fixedly installed on the inner wall of the receiving groove 210. The steel bar frame 300 can improve the strength of the formed slurry-throwing wall. The reinforcing mesh 230 is installed in coordination with the steel bar frame 300.

[0028] The working steps of the technical solution provided in this embodiment are as follows: S1: The blocking wall positions are determined on the top plate, bottom plate and two sides of the underground pipe gallery 200, and lines are drawn. A groove is cut according to the marked positions, so that the width of the receiving groove 210 is 500-1000 mm and the depth is 500 mm; S2: The front end surface of the airbag 220 is arranged inside the receiving groove 210, and the airbag 220 is inflated by using the air supply system, so that the airbag 220 is tightly combined with the top plate, the bottom plate and the two sides of the underground pipe gallery body 200; S3: Four anchor rods are driven into the top plate, bottom plate and two sides of the underground pipe gallery wall in the receiving groove 210 of the underground pipe gallery body 200, and fixed on the surrounding coal walls in the groove, with a depth of 2-3m. Eight steel bars are connected by anchor rods, and the joints and intersections are tied firmly with steel wires to form a steel bar frame 300; S4: An organic reinforcing mesh 230 is arranged on the surface of the steel frame 300, and the mesh size of the reinforcing mesh 230 is 50 mm. * 50mm, the diameter of the mesh is 2mm, the distance between the reinforcing mesh 230 and the surface of the airbag 220 is 100mm~200mm, and the reinforcing mesh 230 extends to the top plate, bottom plate, and two sides of the underground corridor 200, and 500mm is reserved in the middle part of the proposed design of the blocking wall * 500mm blank; S5: Use a forced mixer to mix the slurry material and water into a uniform slurry according to the designed mix ratio. The main mix ratio of the shotcrete is: sulphoaluminate cement: fine sand: water reducer: water: accelerator: organic fiber: rubber powder = 1000: 1000: 2: 350: 2: 0.5: 0.5: 1. Its performance is that the initial setting time is less than 10min, the final setting time is less than 30min, and the 2h compressive strength is greater than 20MPa; S6: Perform slurry throwing construction. The construction range of slurry throwing is the range of the reinforcement mesh 230. The construction thickness of slurry throwing is 100mm. The order of slurry throwing is from bottom to top and from left to right. The width of each slurry throwing is 300~500mm, and the reserved area in the middle is not sprayed. S7: 2 hours after the first layer of slurry is applied, the slurry is completely hardened, and then the gas in the airbag 220 is released and it is taken out of the reserved hole. A layer of encrypted reinforcement mesh is laid on the surface of the reserved hole, and the laying range is to cover 100mm of the edge of the reserved hole, and the mesh size is 2mm. *2mm, the mesh wire diameter is 0.5mm, and subsequent slurry throwing construction is carried out to seal the reserved holes; S8: After the first layer of slurry throwing is completed, if the surface of the first layer of hardened slurry is too dry, it is necessary to spray water to moisten it before the second layer of slurry throwing. The interval between each subsequent layer of slurry throwing should not exceed 120 minutes, until the thickness of the blocking wall reaches the designed thickness, generally greater than 400mm, thus forming a slurry throwing wall -240.

[0029] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, but those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0030] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A method for constructing a blocking wall, comprising a support device (100) and an underground pipe gallery body (200), wherein the support device (100) is located inside the underground pipe gallery body (200) and supports the underground pipe gallery body (200), characterized in that: The top plate, bottom plate and two sides of the underground pipe gallery (200) are all provided with receiving grooves (210), and four groups of receiving grooves (210) are located on the same surface. An air bag (220) is arranged inside the underground pipe gallery (200), and the side wall of the air bag (220) is in active contact with the right section of the receiving groove (210). A reinforcing net (230) is arranged on the left side wall surface of the air bag (220). A slurry throwing wall (240) is arranged inside the receiving groove (210), and the slurry throwing wall (240) is formed by spraying slurry onto the reinforcing net (230) by a spraying machine. A waterproof geotextile (250) is installed on the side wall of the slurry throwing wall (240). The support device (10 0) is installed in four groups of receiving grooves (210) and is in contact with a first waterproof geotextile (250). A second waterproof geotextile (260) is installed on the other side of the support device (100). A reinforcing net (230) is provided on the second waterproof geotextile (260). A second slurry-throwing wall (270) is provided on the reinforcing net (230). The second slurry-throwing wall (270) is located inside the underground pipe gallery (200). The second slurry-throwing wall (270) is formed by spraying slurry onto the reinforcing net (230) of the second waterproof geotextile (260) by a spraying machine. The first slurry-throwing wall (240) and the second slurry-throwing wall (270) are both sealed and fixedly connected to the inner wall of the underground pipe gallery (200).

2. A blocking wall construction method according to claim 1, characterized in that: The support device (100) comprises a base brick (110), wherein the base brick (110) is provided with four groups and is respectively fixedly connected to the inner walls of the four groups of receiving grooves (210), wherein the base brick (110) is provided with a rib insertion hole (111), wherein the rib insertion holes (111) are provided in a plurality of groups and are arranged in a linear array, wherein EPS module bodies 1 (112) and EPS module bodies 2 (113) are provided on all sides of the space formed by the four groups of receiving grooves (210), wherein the EPS module bodies 1 (112) and EPS module bodies 2 (113) are provided in a plurality of groups and are arranged in pairs. The EPS modules (112) and the EPS modules (113) are arranged at intervals, and are used in conjunction with each other. The adjacent EPS modules (112) and the EPS modules (113) are fixedly connected by bolts. The outer walls of the EPS modules (112) and the EPS modules (113) are fixedly installed with steel bars (114). The steel bars (114) are plugged into corresponding steel bar insertion holes (111), and the EPS modules (112) and the EPS modules (113) are installed in conjunction with corresponding base bricks (110).

3. A blocking wall construction method according to claim 2, characterized in that: The four groups of EPS module bodies (112) located at the innermost side are all fixedly installed with L-shaped sealing plates (120) by bolts, and the inner wall of the L-shaped sealing plates (120) is fixedly installed with elastic double buckle plates (121), and the elastic double buckle plates (121) are provided with two groups arranged in an L shape, and the inner walls of the two groups of elastic double buckle plates (121) located on the same side are matched with the same sliding plate (122), and the sliding plate (122) and the elastic double buckle plates (121) are connected. Slight displacement can occur, and oblique retaining angle edges (123) are fixedly installed on both sides of the sliding plate (122). The oblique retaining angle edges (123) can be used in conjunction with the bayonet grooves of the elastic double buckle plate (121). The outer walls of the two groups of elastic double buckle plates (121) located on the same side are plugged with the same bridge-shaped connecting plate (124). The side walls of the bridge-shaped connecting plate (124) are fixedly connected to the inner wall of the L-shaped sealing plate (120), and the bridge-shaped connecting plate (124) is made of an elastic metal plate.

4. A blocking wall construction method according to claim 3, characterized in that: A force unloading assembly (130) is provided in the middle of the space formed by the four groups of receiving grooves (210). The force unloading assembly (130) comprises a return-shaped block (131). The return-shaped block (131) is located at the center of the space formed by the four groups of receiving grooves (210). A partition plate (132) is fixedly installed on the inner wall of the middle of the return-shaped block (131). The outer walls on both sides of the return-shaped block (131) are fixedly installed with a pyramid-shaped seat (133). The inner walls of the top and bottom of the pyramid-shaped seat (133) are both provided with inner sliding grooves (134). The inner wall of the seat (133) is slidably connected to a slider (135) via an inner slide groove (134); a spring (136) is fixedly mounted on the front end wall of the slider (135); and the other end of the spring (136) is fixedly connected to the inner wall of the pyramid-shaped seat (133); an I-shaped push steel (137) is fixedly mounted on the end wall of the slider (135); an I-shaped extension steel (138) is fixedly mounted on the end wall of the I-shaped push steel (137) via bolts; and the end wall of the I-shaped extension steel (138) is fixedly connected to the corresponding base brick (110).

5. A blocking wall construction method according to claim 4, characterized in that: The top and bottom inner walls of the return block (131) are slidably connected to a push seat (140), and the four corners of the top of the push seat (140) are rotatably connected to connecting rods (141). The other end of the connecting rod (141) located on the same side is rotatably connected to the side wall of the corresponding slider (135). A second spring (142) is fixedly installed at the bottom of the push seat (140), and the other end of the second spring (142) is fixedly connected to the partition (132). A second I-shaped extension steel (143) is fixedly installed on the top of the push seat (140), and the end wall of the second I-shaped extension steel (143) is fixedly connected to the corresponding base brick (110). Assembling plates (150) are installed on both sides of the return block (131), and the assembling plates (150) are encapsulated for the support device (100).

6. A blocking wall construction method according to claim 5, characterized in that: A steel bar frame (300) is fixedly mounted on the inner wall of the receiving groove (210), and the reinforcing net (230) is installed in coordination with the steel bar frame (300).

7. A blocking wall construction method according to claim 6, characterized in that: The specific construction plan is as follows: S1: The location of the blocking wall is determined on the top plate, the bottom plate and the two sides of the underground pipe gallery (200), and lines are drawn. A groove is cut according to the marked position, so that the width of the receiving groove (210) is 500-1000 mm and the depth is 500 mm; S2: The front end surface of the airbag (220) is arranged inside the receiving groove (210), and the airbag (220) is inflated by using an air supply system, so that the airbag (220) is tightly combined with the top plate, the bottom plate, and the two sides of the underground pipe gallery body (200); S3: An organic reinforcing net (230) is arranged on the surface of the airbag (220), and the mesh size of the reinforcing net (230) is 50 mm. * 50mm, the mesh wire diameter is 2mm, the distance between the reinforcing mesh (230) and the surface of the airbag (220) is 100mm~200mm, and the reinforcing mesh (230) extends to the top plate, bottom plate, and two sides of the underground corridor body (200), and 500mm is reserved in the middle part of the proposed design blocking wall * 500mm blank; S4: Use a forced mixer to mix the slurry material and water into a uniform slurry according to the designed mix ratio. The main mix ratio of the shotcrete is: sulphoaluminate cement: fine sand: water reducer: water: accelerator: organic fiber: rubber powder = 1000: 1000: 2: 350: 2: 0.5: 0.5:

1. Its performance is that the initial setting time is less than 10min, the final setting time is less than 30min, and the 2h compressive strength is greater than 20MPa; S5: performing slurry throwing construction, the slurry throwing construction range is the range of the reinforcing mesh (230), the slurry throwing construction thickness is 100 mm, the slurry throwing sequence is from bottom to top, from left to right, the width of each slurry throwing is 300-500 mm, and a reserved area in the middle is not subjected to slurry spraying; S6: 2 hours after the first layer of slurry is applied, the slurry is completely hardened, and then the gas in the airbag (220) is released and the airbag is taken out of the reserved hole. A layer of dense reinforcement mesh is laid on the surface of the reserved hole, and the laying range is to cover 100mm of the edge of the reserved hole, and the mesh size is 2mm. * 2mm, the mesh wire diameter is 0.5mm, and subsequent slurry throwing construction is carried out to seal the reserved holes; S7: After the first slurry throwing is completed, if the surface of the first layer of hardened slurry is too dry, it is necessary to spray water to moisten it before the second layer of slurry throwing. The interval between each subsequent layer of slurry throwing shall not exceed 120 minutes, until the thickness of the blocking wall reaches the designed thickness, which is generally greater than 200mm, thereby forming a slurry throwing wall (240); S8: After the slurry-throwing wall body 1 (240) is solidified, a waterproof geotextile 1 (250) is laid on its surface, and four groups of base bricks (110) are fixed to four groups of receiving grooves (210) with concrete, and EPS module body 1 (112) and EPS module body 2 (113) are pre-installed with bolts, and then the assembled EPS module body 1 (112) and EPS module body 2 (113) are installed on the corresponding base bricks (110) through steel bars (114). After the force unloading assembly (130) is assembled, the I-beam extension steel 1 (138) and the I-beam extension steel 2 (143) are fixed to the corresponding base bricks (110), and finally the assembly plate (150) is used to complete the packaging of the force support device (100); S9: After the support device (100) is installed, a second waterproof geotextile (260) is laid on the outside of the support device (100), and a second set of reinforcing nets (230) is arranged on the surface of the second waterproof geotextile (260). Thereafter, the slurry throwing operation is repeated to form a second slurry throwing wall (270), thereby completing the construction of the sealing wall of the entire underground pipe gallery.

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