Reinforcement construction device and construction method for foundation pit slope collapse or slippage

Abstract

The present invention belongs to the field of building construction, and specifically discloses a reinforcement construction device and construction method for a foundation pit slope collapse or slippage, including a support component, a filling component and a pouring component, wherein the filling component includes a sandbag for stacking on a slope collapse area or a slippage surface; the support component includes a main grouting pipe and an auxiliary grouting pipe, wherein the main grouting pipe and the auxiliary grouting pipe both include a conical pipe head and a columnar pipe body, and the pipe body is provided with a plurality of grouting holes along its axial direction; the pipe body of the main grouting pipe is provided with a mounting hole for the auxiliary grouting pipe to penetrate and insert along the radial direction of the main grouting pipe, a limiting plate is fixed at the end of the auxiliary grouting pipe facing away from its pipe head, the limiting plate is used to be stuck outside the mounting hole, and the auxiliary grouting pipe is provided with a connecting hole for communicating with the main grouting pipe; the pouring component is used to grout the main grouting pipe, and the opening end of the main grouting pipe is located outside the sandbag. The solution of the present invention can solve the problem that attention should be paid to avoiding the movement or even falling of the sandbag during the subsequent construction process.

Description

Technical Field

[0001] The invention belongs to the field of building construction, and in particular relates to a reinforcement construction device and a construction method for a collapsed or slipped part of a foundation pit slope. Background Art

[0002] At present, the construction industry is in a state of vigorous development. A large number of urban building basement structures are designed with deep foundation pits. In the prior art, the reinforcement method for the foundation pit slope is as follows: after digging the foundation pit, holes are drilled on the slope of the slope and soil nails are driven in. Then, concrete is poured into the holes to anchor the soil nails in the slope. Then, a steel mesh is laid on the slope of the slope, and a layer of concrete is poured on the outer layer of the steel mesh for reinforcement.

[0003] Generally, the foundation pit needs to be dug deeper, and the geological conditions and external environment are required to be high during the construction process. In the early geological exploration process, it is difficult to fully reflect the complete working conditions of the construction site, which leads to the slope surface being prone to collapse or slip during the excavation and slope reinforcement process, posing a safety risk. Especially when encountering weak geology or severe weather such as heavy rain, the slope surface will slip and form a large collapse hole, making it impossible to continue the previous construction, and emergency treatment is required for the collapsed or slipped area to avoid greater landslide risks.

[0004] The existing method for dealing with slope collapse or sliding is to stack sandbags on the collapsed area or sliding surface so that the sandbags fill the space formed by the collapse or sliding, and then continue to drive soil nails and pour concrete in the original way. However, when stacking sandbags, there is a situation where the sandbags cannot completely fill the space formed by the collapse or sliding, and the position of the sandbags cannot be restricted. Especially when the height of the sandbag stacking is high, it is also necessary to pay attention to prevent the sandbags from moving or even falling during the subsequent construction process. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention provides a reinforcement construction device and a construction method for collapsed or slipped foundation pit slopes, so as to solve the problem that the position of sandbags cannot be restricted when stacking sandbags, especially when the height of the sandbags is high, it is also necessary to pay attention to prevent the sandbags from moving or even falling during the subsequent construction process.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] The reinforcement construction device for the collapsed or slipped part of the foundation pit slope comprises a supporting assembly, a filling assembly and a pouring assembly, wherein the filling assembly comprises sand bags for stacking on the collapsed area or slip surface of the slope; the supporting assembly comprises a main grouting pipe and an auxiliary grouting pipe, both of which comprise a conical pipe head and a columnar pipe body, and a plurality of grouting holes are provided on the pipe body along the axial direction thereof; a mounting hole is provided on the pipe body of the main grouting pipe for the auxiliary grouting pipe to penetrate and insert along the radial direction of the main grouting pipe, a limiting plate is fixed on the end of the auxiliary grouting pipe facing away from the pipe head, the limiting plate is used to be stuck outside the mounting hole, a connecting hole for communicating with the main grouting pipe is provided on the side wall of the end of the auxiliary grouting pipe facing away from the pipe head, the main grouting pipe is used to be inserted into the slope for anchoring, and the auxiliary grouting pipe is used to be inserted into the sand bag or supported on the outside of the sand bag to fix the sand bag; the pouring assembly is used to grout the main grouting pipe, and the opening end of the main grouting pipe is located outside the sand bag.

[0008] Compared with the prior art, the present invention has the following beneficial effects:

[0009] Inserting the main grouting pipe into the slope and injecting grouting for anchoring is equivalent to driving soil nails in the prior art. The auxiliary grouting pipe is connected to the main grouting pipe, and the concrete slurry entering the main grouting pipe can enter the auxiliary grouting pipe through the connecting hole. The auxiliary grouting pipe is inserted into the sandbag or supported on the outside of the sandbag, so the injected concrete slurry can enter the sandbag or fill the outside of the sandbag, that is, fill the gap between the sandbags, which has a fixing effect on the sandbag, and fills the gap between the sandbags, which can better fill the collapse area or sliding surface completely to avoid further danger.

[0010] To achieve the above object, the present invention also adopts the following technical solution:

[0011] The reinforcement construction method of the foundation pit slope collapse or slippage, using the reinforcement construction device of the foundation pit slope collapse or slippage, comprises the following steps:

[0012] S1. Stack the sandbags to the collapsed area or sliding surface of the slope, so that the sandbags fill the collapsed area of ​​the slope;

[0013] S2. After filling two or three layers of sandbags, holes are drilled on the slope surface above the sandbags and a main grouting pipe is installed. Then, the auxiliary grouting pipe is inserted into the installation hole on the main grouting pipe, and the auxiliary grouting pipe is inserted into the sandbag below it or is set on the sandbag below it;

[0014] S3, pouring concrete into the main grouting pipe through the pouring assembly, so that the concrete fills the main grouting pipe and the auxiliary grouting pipe, and is discharged through the grouting holes to fill the slope surface and the gaps between the sand bags;

[0015] S4. After grouting is completed, a steel mesh is hung on the outside of the main grouting pipe, the steel mesh and the sandbag are attached to each other, and then a concrete layer is sprayed on the outside of the steel mesh through the grouting assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention (the auxiliary grouting pipe is not shown).

[0017] Figure 2 It is a schematic diagram of the coordination of the main grouting pipe and the auxiliary grouting pipe in an embodiment of the present invention.

[0018] Figure 3 for Figure 2 Enlarged view of part A.

[0019] Figure 4 for Figure 1 Left view of .

[0020] In the figure: 1. Slope; 2. Main grouting pipe; 3. Pipe body; 4. Pipe head; 5. Sandbag; 6. Auxiliary grouting pipe; 7. Limiting plate; 8. Observation hole; 9. Hard pipe part; 10. Flexible pipe part; 11. Mounting hole; 12. Grouting hole; 13. Block; 14. Groove; 15. Connector; 16. Wedge surface; 17. Wire mesh. DETAILED DESCRIPTION

[0021] The present invention is further described in detail below with reference to the accompanying drawings, and specific implementation methods are given.

[0022] like Figure 1 As shown, the reinforcement construction device for the collapsed or slipped part of the foundation pit slope includes a support component, a filling component and a pouring component. The filling component includes a sand bag 5 for stacking on the collapsed area or slip surface of the slope 1, combined with Figure 4 As shown, according to the depth and size of the collapsed area or the sliding surface of the slope 1, the number of stacked sandbags 5 is selected, and they are stacked in sequence from bottom to top and from inside to outside.

[0023] Combination Figure 2 As shown, the support assembly includes a main grouting pipe 2 and an auxiliary grouting pipe 6. The main grouting pipe 2 and the auxiliary grouting pipe 6 each include a conical pipe head 4 and a columnar pipe body 3. The pipe body 3 is provided with a plurality of grouting holes 12 along its axial direction. The main grouting pipe 2 is used to be inserted into the slope 1 for anchoring. The main grouting pipe 2 is provided with multiple layers and multiple columns. The main grouting pipes 2 of adjacent layers are staggered. Specifically, the main grouting pipe 2 is adaptively arranged according to the number of stacked sandbags 5. For example, a layer of main grouting pipe 2 is set on the sandbags 5 for every two to three layers of sandbags 5 stacked.

[0024] The pipe body 3 of the main grouting pipe 2 is provided with a mounting hole 11 for the auxiliary grouting pipe 6 to penetrate and insert along the radial direction of the main grouting pipe 2. A limit plate 7 is fixed to the end of the auxiliary grouting pipe 6 facing away from its pipe head 4. The limit plate 7 is used to be stuck outside the mounting hole 11. The limit plate 7 is used to prevent the auxiliary grouting pipe 6 from being completely inserted into the main grouting pipe 2. The side wall of the end of the auxiliary grouting pipe 6 facing away from its pipe head 4 is provided with a connecting hole for communicating with the main grouting pipe 2, so that the concrete slurry injected into the main grouting pipe 2 can enter the auxiliary grouting pipe 6 through the connecting hole. The middle part of the limit plate 7 is provided with an observation hole 8 for communicating with the inside of the auxiliary grouting pipe 6. By checking whether there is concrete slurry overflowing from the observation hole 8, it can be judged to a certain extent whether the grouting is completed.

[0025] The installation holes 11 on the main grouting pipes 2 are opened in different directions. Specifically, when the main grouting pipes 2 are set up, the installation holes 11 on the main grouting pipes 2 are oriented. For example, if the installation holes 11 are in a vertical state, the pipe head 4 of the auxiliary grouting pipe 6 inserted into the installation holes 11 is inserted downward into the sandbag 5 located below the main grouting pipe 2; for another example, if the installation holes 11 are in a horizontal state, the pipe head 4 of the auxiliary grouting pipe 6 inserted into the installation holes 11 is oriented to the left or right, and the auxiliary grouting pipe 6 can be horizontally set up on the sandbag 5 of the lower layer. The auxiliary grouting pipe 6 is used to be inserted into the sandbag 5 or supported on the outside of the sandbag 5 to fix the sandbag 5.

[0026] Combination Figure 4 As shown, the support assembly also includes a wire mesh 17, which is hung on the main grouting pipe 2 extending out of the slope 1 or the outside of the sandbags 5. The wire mesh 17 is used to fix the slope 1 or the sandbags 5. After the sandbags 5 are stacked and the main grouting pipe 2 is erected, the wire mesh 17 is hung on the end of the main grouting pipe 2 extending out of the outside of the sandbags 5, and all the sandbags 5 are fixed by the wire mesh 17.

[0027] The grouting component is used for grouting the main grouting pipe 2, and the grouting component can directly select the equipment used for grouting concrete slurry in the prior art.

[0028] When used specifically, sandbags 5 are stacked at the collapsed or slipped part of the slope 1, so that the sandbags 5 fill the collapsed or slipped area as much as possible, and then the main grouting pipe 2 is inserted into the slope 1, and the auxiliary grouting pipe 6 is connected to the main grouting pipe 2, and then the main grouting pipe 2 is grout-anchored by the grouting assembly, which is equivalent to the application of soil nails in the prior art. The concrete slurry entering the main grouting pipe 2 can enter the auxiliary grouting pipe 6 through the connecting hole, and the auxiliary grouting pipe 6 is inserted into the sandbag 5 or supported on the outside of the sandbag 5, then the injected concrete slurry can enter the sandbag 5 or fill the outside of the sandbag 5, that is, fill the gap between the sandbags 5, which has a fixing effect on the sandbag 5, and filling the gap between the sandbags 5 can better fill the collapsed area or slip surface completely to avoid further danger.

[0029] In another embodiment of the present invention, Figure 3 As shown, the pipe body 3 of the main grouting pipe 2 is provided with multiple groups of plug-in pieces 15 along its axial direction. One end of the plug-in piece 15 is located in the pipe body 3 and is provided with a wedge surface 16. The wedge surface 16 faces the open end of the pipe body 3, and the wedge surface 16 of the plug-in piece 15 faces the center of the pipe body 3. The other end of the plug-in piece 15 extends out of the pipe body 3 and is fixed with a clamping block 13. The clamping block 13 is conical and the tip faces the outside of the pipe body 3. In order to prevent the clamping block 13 from extending out of the pipe body 3 too much, which makes it inconvenient to insert the pipe body 3 into the slope 1, the side wall of the pipe body 3 is provided with an embedding groove 14, which is used to receive part of the clamping block 13. During pouring, the concrete slurry will also be filled into the embedding groove 14 to further fix the pipe body 3. In order to prevent the plug-in piece 15 from being separated from the tube body 3 during transportation, a magnetic block is fixed in the embedding groove 14 , and the clamping block 13 is made of iron material so that the magnetic block can absorb the clamping block 13 , so that the clamping block 13 can be partially embedded in the embedding groove 14 .

[0030] The grouting assembly includes a grouting pipe, the outer diameter of which is smaller than the inner diameter of the pipe body 3 of the main grouting pipe 2, the grouting assembly includes a grouting pump, the grouting pipe includes a hard pipe portion 9 and a soft pipe portion 10, the soft pipe portion 10 is used to connect the grouting pump and the hard pipe portion 9, the hard pipe portion 9 and the soft pipe portion 10 are detachably connected, specifically, the ends of the hard pipe portion 9 and the soft pipe portion 10 are both fixed with connecting rings, and the two connecting rings are bolted. The hard pipe portion 9 is used to extend into the main grouting pipe 2 for grouting, and the outer diameter of the hard pipe portion 9 is smaller than the inner diameter of the pipe body 3 of the main grouting pipe 2.

[0031] When in use, the hard tube 9 is inserted into the main grouting pipe 2 to a certain depth for grouting. As the grouting proceeds, the hard tube 9 is gradually pulled outward and inserted into the main grouting pipe 2 for grouting to avoid the area in the main grouting pipe 2 where there is no grouting. When the hard tube 9 is inserted into the main grouting pipe 2, the end of the hard tube 9 pushes the wedge surface 16 to push the plug-in piece 15 out of the main grouting pipe 2. The plug-in piece 15 drives the block 13 to move to the outside of the pipe body 3. The setting of the block 13 facilitates the plug-in piece 15 to be inserted into the soil around the pipe body 3. The concrete slurry flowing out of the grouting hole 12 fixes the plug-in piece 15 on the outside of the pipe body 3, and the part of the plug-in piece 15 still located in the pipe body 3 is also fixed in the concrete slurry in the pipe body 3. The plug-in piece 15 connects the inside and outside of the pipe body 3, so that the pipe body 3 is better anchored in the slope 1.

[0032] In another embodiment of the present invention, a method for reinforcing a foundation pit slope collapse or slippage, using the above-mentioned reinforcement construction device for a foundation pit slope collapse or slippage, comprises the following steps:

[0033] S1, stack the sandbags 5 to the collapsed area or slip surface of the slope 1, so that the sandbags 5 fill the collapsed area of ​​the slope 1, see Figure 4 Status shown;

[0034] S2. After filling two or three layers of sandbags 5, a hole is punched above the sandbags 5 and the main grouting pipe 2 is installed. Then, the auxiliary grouting pipe 6 is inserted into the installation hole 11 on the main grouting pipe 2. The installation hole 11 on the main grouting pipe 2 is oriented so that the pipe head 4 of the auxiliary grouting pipe 6 inserted into the installation hole 11 is inserted downward into the sandbag 5 below the main grouting pipe 2 or the pipe head 4 of the auxiliary grouting pipe 6 inserted into the installation hole 11 is oriented to the left or right, and the auxiliary grouting pipe 6 can be horizontally laid on the sandbags 5 of the lower layer.

[0035] S3, the main grouting pipe 2 is grouted by the grouting assembly, the hard pipe part 9 is inserted into the main grouting pipe 2 to a certain depth, and the concrete slurry is sent into the hard pipe part 9 by the grouting pump, so that the concrete slurry enters the main grouting pipe 2, and as the grouting proceeds, the hard pipe part 9 is gradually pulled outward, so that the concrete fills the main grouting pipe 2 and the auxiliary grouting pipe 6, and is discharged through the grouting hole 12 to fill the slope surface of the slope 1 and the gap between the sandbags 5;

[0036] S4. After the grouting is completed, a steel mesh 17 is hung outside the main grouting pipe 2, the steel mesh 17 and the sandbag 5 are attached to each other, and then a concrete layer is sprayed on the outside of the steel mesh 17 through a pouring assembly.

[0037] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A reinforcement construction device for a foundation pit where a slope collapses or slides, comprising a support assembly, a filling assembly and a pouring assembly, wherein the filling assembly comprises sand bags for stacking on a slope collapse area or a sliding surface; characterized in that: The support assembly comprises a main grouting pipe and an auxiliary grouting pipe, both of which comprise a conical pipe head and a columnar pipe body, and a plurality of grouting holes are provided on the pipe body along the axial direction thereof; a mounting hole is provided on the pipe body of the main grouting pipe for the auxiliary grouting pipe to penetrate and insert along the radial direction of the main grouting pipe, and the mounting holes on the plurality of main grouting pipes are provided in different directions, a limiting plate is fixed on the end of the auxiliary grouting pipe facing away from its pipe head, and the limiting plate is used to be stuck outside the mounting hole, and a connecting hole for communicating with the main grouting pipe is provided on the side wall of the end of the auxiliary grouting pipe facing away from its pipe head, and the main grouting pipe is used to be inserted into the slope for anchoring, and the auxiliary grouting pipe is used to be inserted into a sandbag or supported on the outside of the sandbag to fix the sandbag; the grouting assembly is used to grout the main grouting pipe, and the open end of the main grouting pipe is located on the outside of the sandbag; the main grouting pipe is provided with multiple layers and multiple columns, and the main grouting pipes of adjacent layers are staggered; The main grouting pipe is provided with a plurality of plug-in pieces along its axial direction. One end of the plug-in piece is located in the pipe body and provided with a wedge surface, the wedge surface faces the opening end of the pipe body, and the other end of the plug-in piece extends out of the pipe body and is fixed with a clamping block. The side wall of the main grouting pipe is provided with an embedding groove for receiving the clamping block. A magnetic block is fixed in the embedding groove, and the clamping block is made of iron material. The grouting assembly includes a grouting pipe, the outer diameter of which is smaller than the inner diameter of the main grouting pipe. The grouting assembly includes a grouting pump. The grouting pipe includes a hard pipe part and a soft pipe part. The soft pipe part is used to connect the grouting pump and the hard pipe part. The hard pipe part and the soft pipe part are detachably connected. The hard pipe part is used to extend into the main grouting pipe for grouting.

2. The reinforcement construction device for foundation pit slope collapse or slippage according to claim 1, characterized in that: The clamping block is in a cone shape with the tip facing the outside of the tube body.

3. The reinforcement construction device for foundation pit slope collapse or slippage according to claim 1, characterized in that: An observation hole for communicating with the inside of the auxiliary grouting pipe is provided in the middle of the limit plate.

4. The reinforcement construction device for foundation pit slope collapse or slippage according to claim 1, characterized in that: The support assembly also includes a wire mesh, which is hung on a main grouting pipe extending out of the slope or the outside of the sandbag, and is used to fix the slope or the sandbag.

5. The reinforcement construction method for the collapsed or slipped part of the foundation pit slope is characterized by: The reinforcement construction device for the collapsed or slipped part of the foundation pit slope as claimed in any one of claims 1 to 4 comprises the following steps: S1. Stack the sandbags to the collapsed area or sliding surface of the slope, so that the sandbags fill the collapsed area of ​​the slope; S2. After filling two or three layers of sandbags, holes are drilled on the slope surface above the sandbags and a main grouting pipe is installed. Then, the auxiliary grouting pipe is inserted into the installation hole on the main grouting pipe, and the auxiliary grouting pipe is inserted into the sandbag below it or is set on the sandbag below it; S3, pouring concrete into the main grouting pipe through the pouring assembly, so that the concrete fills the main grouting pipe and the auxiliary grouting pipe, and is discharged through the grouting holes to fill the slope surface and the gaps between the sand bags; S4. After grouting is completed, a wire mesh is hung on the outside of the main grouting pipe, the wire mesh and the sandbag are attached to each other, and then a concrete layer is sprayed on the outside of the wire mesh through the grouting assembly.

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