A slope protection device for geotechnical construction

Abstract

This application relates to a slope support device for geotechnical construction, belonging to the field of slope support technology. It includes a sealing membrane, vacuum extraction plates, a negative pressure vacuuming device, and inclined piles. The sealing membrane covers the surface of the slope. Several vacuum extraction plates are arranged in a rectangular array, each embedded within the slope, with the upper end of each plate passing through the sealing membrane. The vacuum negative pressure device communicates with the end of each vacuum extraction plate extending beyond the slope surface. Several inclined piles are arranged along the length of the slope, extending along the slope's inclination direction and pressed against the surface of the sealing membrane. The lower end of each inclined pile is embedded within the toe of the slope. This application has the advantage of occupying little space, thus reducing requirements on the construction environment.

Description

Technical Field

[0001] This application relates to the field of slope protection technology, and in particular to a slope protection device for geotechnical construction. Background Technology

[0002] The development trend of modern civil engineering in my country is the continuous expansion of living spaces, primarily reflected in the development of underground space. This development inevitably involves geotechnical engineering, which studies elements below ground level. Common engineering practices include foundation surveying, excavation pit support, and soft soil reinforcement. Because geotechnical construction mainly involves building foundation structures below ground level, excavation pits naturally form, creating slopes along their sides. Without proper slope support, landslides can easily occur, posing a significant risk to geotechnical construction.

[0003] Currently, most slope protection methods used in geotechnical construction involve driving double piles into the soil surface and then using support plates to stabilize the slope. This method has poor stability and limited protective effect. Furthermore, the harsh outdoor environment makes the support and slope highly susceptible to landslides after exposure to sunlight or erosion from rainwater, compromising construction safety.

[0004] Related technologies, such as Chinese Patent No. CN114232655A, disclose a slope support device for geotechnical construction, including a pad plate, several rollers below the pad plate, a movable support plate embedded and connected to one side of the upper part of the pad plate, a rotating shaft on one side inside the movable support plate, a driven gear fixedly connected to the outer side of the rotating shaft, several supports on the upper part of the movable support plate adjacent to the driven gear, a hydraulic jack rod connected inside the supports, a support plate above the top of the hydraulic jack rod, and a pad block on one side above the support plate.

[0005] In the aforementioned related technologies, the stability of the support bottom can be improved by increasing the contact area between the pad and the ground through the use of movable support plates and partitions; and by covering the slope with support plates and clamping plates, the clamping blocks on the support plates and the conical rods on the clamping plates can be embedded in the slope. However, when implementing the above technical solutions, the rotation of the support plates needs to be driven by hydraulic jacks, which in turn require a support frame composed of pads and movable support plates for support and bearing. In this case, the slope support device occupies a large space and has high requirements for the construction environment, thus requiring improvement. Summary of the Invention

[0006] The purpose of this application is to provide a slope support device for geotechnical construction that has the advantage of occupying little space, thereby reducing the requirements for the construction environment.

[0007] This application provides a slope support device for geotechnical construction, which adopts the following technical solution:

[0008] A slope support device for geotechnical construction includes a sealing membrane, vacuum extraction plates, a negative pressure vacuuming device, and inclined piles. The sealing membrane covers the surface of the slope. Several vacuum extraction plates are arranged in a rectangular array, each embedded in the slope, with the upper end of each plate passing through the sealing membrane. The vacuum negative pressure device communicates with the end of each vacuum extraction plate that extends beyond the slope surface. Several inclined piles are arranged along the length of the slope, extending along the slope's inclination direction and pressed against the surface of the sealing membrane. The lower end of each inclined pile is embedded in the toe of the slope. When the vacuum negative pressure device is working, the vacuum extraction plates can extract water and air from the slope.

[0009] Specifically, by utilizing the combination of the sealing membrane and the vacuum extraction plate, the negative pressure vacuum device can vacuum the inside of the slope, expelling accumulated water and excess air, making the soil and rock inside the slope more compact. At the same time, the sealing membrane can also directly prevent the slope surface from being exposed to the sun. Finally, by utilizing the combination of inclined piles and the sealing membrane, the soil and rock inside the slope can be firmly pressed down, providing support and reinforcement to the slope from both the inside and the surface.

[0010] Furthermore, trenches are provided at the toe and top of the slope, and the upper and lower sides of the sealing membrane are respectively covered in the two trenches. Reinforced concrete components are installed in both trenches, and the reinforced concrete components press the portion of the sealing membrane located in the trenches. The upper and lower ends of each inclined pile are respectively fixedly connected to the two reinforced concrete components.

[0011] Specifically, the cooperation between the trench and the reinforced concrete components enables the sealing membrane to seal and isolate the upper and lower sides of the slope. Furthermore, the reinforced concrete components can also serve to fix and support the inclined piles, ensuring that the inclined piles can stably press down on the isolation membrane and the slope surface.

[0012] Furthermore, the vacuum extraction plate is hollow inside, and several air inlets are provided on both sides of the end of the vacuum extraction plate near the slope surface. Both ends of each air inlet are connected to the surface and interior of the vacuum extraction plate. One end of the vacuum extraction plate is provided with a first connector that can pass through the sealing membrane. Each first connector can be connected to the negative pressure vacuuming device and is connected to the interior of the vacuum extraction plate.

[0013] Specifically, when the negative pressure vacuum device is working, it evacuates the vacuum plate. Under the action of negative pressure, the water and air in the slope will enter the vacuum plate through the air inlet and eventually be discharged through the first joint, thereby forcibly evacuating the soil and rock structure inside the slope, making the soil and rock structure inside the slope more compact.

[0014] Furthermore, the vacuum extraction plate has several air blowing holes on both sides of the end away from the slope surface. An isolation plate is provided in the middle of the vacuum extraction plate, which divides the two ends of the vacuum extraction plate into two isolated chambers. Each air inlet is connected to one of the chambers, and each air blowing hole is connected to the other chamber. They are also connected to the slope surface through a first connector. An air pipe is installed on the isolation plate, with the end of the air pipe away from the isolation plate extending out of the vacuum extraction plate. Each air blowing hole is connected to the slope surface through the air pipe. The air outlet of the negative pressure vacuum device is connected to the air pipe.

[0015] Specifically, by utilizing the cooperation between the isolation plate, the air blowing hole, and the air pipe, the negative pressure vacuum device can also blow excess air back into the rock and soil structure deep in the slope when it is working. When the air blows back into the rock and soil structure deep in the slope, it can open up tiny air gap channels in the rock and soil structure deep in the slope, making it easier for the water in the deep slope to flow, which helps the vacuum pump plate to force the water in the deep slope to be discharged.

[0016] Furthermore, the negative pressure vacuum device includes a vacuum pump, a first main pipe, a second main pipe, an extraction pipe, and a supply pipe. The first main pipe and the second main pipe are respectively connected to the inlet and outlet of the vacuum pump, and both the first main pipe and the second main pipe extend along the length of the slope. Several extraction pipes and supply pipes are arranged along the length of the slope, and each extraction pipe and supply pipe extends along the slope's inclination direction. One end of each extraction pipe is connected to the first main pipe. Each extraction pipe is connected to the first connector of several vacuum exhaust pipes at corresponding positions. Each blowing pipe is connected to the air pipe of several vacuum exhaust pipes at corresponding positions. A water filter is provided on the inlet of the vacuum pump.

[0017] Specifically, when the vacuum pump is working, through the cooperation between the first and second main pipes, air and water in the surface soil and rock structure of the slope can be continuously extracted, and the extracted air can be pumped back into the soil and rock structure deep in the slope. The water filter can prevent the water extracted from the surface soil and rock structure from being injected into the slope, thus ensuring the compaction and reinforcement effect of the slope.

[0018] Furthermore, each of the inclined piles is arranged in a vacuum tube shape, and the portion of each vacuum extraction plate extending out of the slope surface extends into the corresponding inclined pile. Each air blowing pipe and each air extraction pipe are arranged in the corresponding inclined pile.

[0019] Specifically, by setting up an internal vacuum for inclined pile driving, not only can the weight and material consumption of inclined pile driving be reduced, but it can also accommodate air blowing pipes and air extraction pipes, making the slope surface cleaner and effectively reducing costs.

[0020] Furthermore, each of the inclined piles includes a pipe trench and a cover. The cross-section of the pipe trench is in the shape of a "U". The air blowing pipe and the air extraction pipe can be installed in the pipe trench. The cover is placed on the pipe trench. Several perforations are arranged along the length of the pipe trench on the lower side.

[0021] Specifically, after the sealing membrane is laid, the pipe tray is first installed on the slope surface, and the upper end of the vacuum extraction plate can be inserted into the pipe tray through the perforation. Then, the blowing pipe and the air outlet pipe are installed in the corresponding pipe trays, and the blowing pipe and the air outlet pipe are connected to the corresponding vacuum extraction plate. Finally, the cover is placed on top.

[0022] Furthermore, the negative pressure vacuuming device includes a vacuum pump, a first main pipe, and a second main pipe. The first main pipe and the second main pipe are respectively connected to the air inlet and air outlet of the vacuum pump. Each of the inclined piles is provided with an air passage in an up-down position. The first main pipe is connected to the air passage located on the lower side of each inclined pile, and the second main pipe is connected to the air passage located on the upper side of each inclined pile. Each first connector is connected to the air passage located on the lower side of the corresponding inclined pile, and each air pipe is connected to the air passage located on the upper side of the corresponding inclined pile. Both ends of the inclined pile are sealed.

[0023] Specifically, by setting two ventilation channels inside the inclined pile that are connected to the first main pipe and the second main pipe respectively, and connecting the two ventilation channels to the first joint and the air pipe at the corresponding positions, the inclined pile can not only suppress the sealing membrane and the rock and soil structure on the slope surface, but also be used as a medium for air circulation. The ventilation channels connected to each of the first joints can also temporarily store water.

[0024] In summary, this application includes at least one of the following beneficial technical effects:

[0025] 1. It can compress the soil and rock structure on the slope surface and make the soil and rock structure on the slope surface more compact through vacuuming, which effectively prevents landslides.

[0026] 2. It can quickly drain water from the slope, and the drained water can be temporarily stored for use as construction water. Attached Figure Description

[0027] Figure 1 This is a structural schematic diagram of the slope support device according to Embodiment 1 of this application;

[0028] Figure 2 This is a schematic diagram of the negative pressure vacuum assembly of Embodiment 1 of this application;

[0029] Figure 3 This is a schematic diagram of the vacuum extraction plate of Embodiment 1 of this application;

[0030] Figure 4 This is a schematic diagram of the arrangement of the vacuum negative pressure device in Embodiment 1 of this application;

[0031] Figure 5 yes Figure 1 A magnified view of part A;

[0032] Figure 6 This is a schematic diagram of the pile driving assembly of Embodiment 1 of this application;

[0033] Figure 7 This is a schematic cross-sectional view of the inclined pile in Embodiment 1 of this application;

[0034] Figure 8 This is a schematic diagram of the connection between the inclined pile and the vacuum extraction plate in Embodiment 1 of this application;

[0035] Figure 9 This is a schematic diagram of the connection between the inclined pile driver and the negative pressure vacuum pumping assembly in Embodiment 2 of this application.

[0036] Reference numerals: 1. Slope; 11. Trench; 2. Sealing membrane; 3. Negative pressure vacuum assembly; 31. Vacuum extraction plate; 311. First connector; 312. Second connector; 313. Isolation plate; 314. Air pipe; 315. Air inlet; 316. Air blowing hole; 317. Chamber; 32. Vacuum negative pressure device; 321. Vacuum pump; 322. First main pipe; 323. Second main pipe; 324. Extraction pipe; 325. Air supply pipe; 327. Water filter; 4. Pile driving assembly; 41. Reinforced concrete component; 42. Inclined pile driving; 421. Pipe inlet trench; 422. Cover; 423. Perforation; 424. Ventilation channel. Implementation

[0037] The following is in conjunction with the appendix Figure 1 - Appendix Figure 9 This application will be described in further detail below. Example

[0038] A slope support device for geotechnical construction, referring to Figure 1 The system includes a sealing membrane 2, a negative pressure vacuum assembly 3, and a pile driving assembly 4. The negative pressure vacuum assembly 3 is installed on the slope 1 and is used to extract the water and air from the slope 1. The sealing membrane 2 is covered on the surface of the slope 1 and is used to improve the airtightness of the slope 1 surface. The pile driving assembly 4 is installed on the surface of the sealing membrane 2 and is used to press the sealing membrane 2 onto the surface of the slope 1 and to apply a certain amount of pressure to the surface of the slope 1.

[0039] Reference Figure 1 and Figure 2 The negative pressure vacuum assembly 3 includes a vacuum extraction plate 31 and a vacuum negative pressure device 32. The vacuum extraction plates 31 are arranged in a rectangular array of several pieces. Each vacuum extraction plate 31 is buried in the slope 1, and the upper end of each vacuum extraction plate 31 is covered with a sealing membrane 2. The vacuum negative pressure device 32 is connected to the end of each vacuum extraction plate 31 that extends out of the surface of the slope 1. When the vacuum negative pressure device 32 is working, it can perform negative pressure vacuuming on the vacuum extraction plates 31, and then vacuum the soil and rock structure inside the slope 1 through the vacuum extraction plates 31.

[0040] Reference Figure 2 and Figure 3 The vacuum extraction plate 31 is hollow inside, and an isolation plate 313 is installed inside the vacuum extraction plate 31, which divides the two ends of the vacuum extraction plate 31 into two isolated chambers 317. A first connector 311 and a second connector 312 that can pass through the sealing membrane 2 are provided on one end of the vacuum extraction plate 31. The chamber 317 closer to the first connector 311 is directly connected to the first connector 311. An air pipe 314 is installed on the isolation plate 313, which is located in the chamber away from the first connector 311. 317 is connected to the second connector 312 via the air pipe 314; wherein, a number of air inlets 315 are provided on the surface of the vacuum pump plate 31 at the end near the slope 1, and each air inlet 315 is connected to the chamber 317 near the first connector 311; a number of air blowing holes 316 are provided on the surface of the vacuum pump plate 31 at the end away from the first connector 311, and each air inlet 315 is connected to one of the chambers 317; each air blowing hole 316 is connected to the chamber 317 away from the first connector 311.

[0041] When the vacuum extraction plate 31 is installed in the slope 1, the first joint 311 and the second joint 312 are both passed through the sealing membrane 2, and the first joint 311 is connected to the air inlet of the negative pressure vacuum device, and the second joint 312 is connected to the air outlet of the negative pressure vacuum device.

[0042] Reference Figure 3 and Figure 4The negative pressure vacuum device includes a vacuum pump 321, a first main pipe 322, a second main pipe 323, an extraction pipe 324, an air supply pipe 325, and a water filter. The water filter is installed on the air inlet of the vacuum pump 321. The first main pipe 322 and the second main pipe 323 are respectively connected to the air inlet and outlet of the vacuum pump 321, and both the first main pipe 322 and the second main pipe 323 extend along the length of the slope 1. Several extraction pipes 324 and air supply pipes 325 are arranged along the length of the slope 1, and each extraction pipe 324 and air supply pipe 325 extends along the inclination direction of the slope 1. One end of each extraction pipe 324 is connected to the first main pipe 322. Each extraction pipe 324 is connected to the first connector 311 of several vacuum exhaust pipes at corresponding positions, and each blowing pipe is connected to the air pipe 314 of several vacuum exhaust pipes at corresponding positions.

[0043] When the vacuum pump 321 is working, the air and water on the surface of the slope 1 will enter the vacuum extraction plate 31, and then pass through the extraction pipe 324 and the first main pipe 322 into the water filter 327. The water will be filtered and discharged through the water filter 327. The air will continue to enter the vacuum pump 321, and then pass through the second main pipe 323 and the air supply pipe 325 back into the vacuum extraction plate 31, and finally be discharged back into the deep soil and rock structure of the slope 1.

[0044] Reference Figure 1 and Figure 5 A trench 11 is provided at both the toe and the top of the slope 1. The length of the trench 11 extends along the length of the slope 1. The upper and lower sides of the sealing membrane 2 are respectively covered in the two trenches 11. The upper and lower ends of the pile driving assembly 4 are respectively installed in the two trenches 11, and the part of the pile driving assembly 4 located in the trench 11 presses down on the part of the sealing membrane 2 located in the trench 11.

[0045] Reference Figure 6 The pile driving assembly 4 includes inclined piles 42 and reinforced concrete components 41. The inclined piles 42 are pressed onto the sealing membrane 2. There are two reinforced concrete components 41, which are installed in two trenches 11 respectively, and the upper side of both reinforced concrete components 41 extends out of the trenches 11. Several inclined piles 42 are arranged between the two reinforced concrete components 41. Each inclined pile 42 is arranged along the length direction of the slope 1, and the length direction of the inclined piles 42 extends along the inclination direction of the slope 1. The upper and lower ends of the inclined piles 42 are fixedly connected to the two reinforced concrete components 41 respectively.

[0046] Reference Figure 7 and Figure 8Each inclined pile 42 includes a pipe groove 421 and a cover 422. The cross-section of the pipe groove 421 is shaped like a "U". The cover 422 is placed on the pipe groove 421 so that the interior of the inclined pile 42 can be hollow. Several perforations 423 are provided on the lower side of the pipe groove 421 along the length of the pipe groove 421. When the inclined pile 42 is installed on the slope 1, the air blowing pipe 314 and the air extraction pipe 324 can be installed in the pipe groove 421. The parts of the vacuum extraction plates 31 corresponding to the position of the inclined pile 42 that extend out of the surface of the slope 1 can extend into the inclined pile 42 through the perforations 423.

[0047] The working principle of this application embodiment:

[0048] By utilizing the cooperation between the sealing membrane 2 and the vacuum extraction plate 31, the negative pressure vacuum device can vacuum the interior of the slope 1, expelling accumulated water and excess air from the slope 1, making the soil and rock inside the slope 1 more compact. At the same time, the sealing membrane 2 can also directly prevent the surface of the slope 1 from being exposed to the sun. Finally, by utilizing the cooperation between the inclined pile 42 and the sealing membrane 2, the soil and rock inside the slope 1 can be firmly pressed down, providing support and reinforcement to the slope 1 from both the inside and the surface. Example

[0049] Reference Figure 9 The difference from Embodiment 1 is that, in this embodiment, the negative pressure vacuum device includes a vacuum pump 321, a first main pipe 322, and a second main pipe 323. The first main pipe 322 and the second main pipe 323 are respectively connected to the air inlet and air outlet of the vacuum pump 321. Each inclined pile 42 is provided with an air passage 424 in an up-down position. The first main pipe 322 is connected to the lower air passage 424 in each inclined pile 42, and the second main pipe 323 is connected to the upper air passage 424 in each inclined pile 42. The first connector 311 is connected to the lower air passage 424 of the inclined pile 42, and the second connector 312 is connected to the upper air passage 424 of the inclined pile 42. Both ends of the inclined pile 42 are sealed.

[0050] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A slope support device for geotechnical construction, characterized by, The device includes a sealing membrane, vacuum extraction plates, a vacuum negative pressure device, and inclined piles. The sealing membrane covers the surface of the slope. Several vacuum extraction plates are arranged in a rectangular array, each buried within the slope, with the upper end of each plate passing through the sealing membrane. The vacuum negative pressure device is connected to the end of each vacuum extraction plate that extends beyond the slope surface. Several inclined piles are arranged along the length of the slope, with each pile extending along the slope's inclination direction and pressed against the surface of the sealing membrane. The lower end of each pile is buried within the slope's toe. When the vacuum negative pressure device is working, the vacuum extraction plates can extract water and air from the slope. The slope has trenches at the toe and top, and the upper and lower sides of the sealing membrane are respectively covered in the two trenches. Reinforced concrete components are installed in the two trenches. The reinforced concrete components press the part of the sealing membrane located in the trench. The upper and lower ends of each inclined pile are respectively fixedly connected to the two reinforced concrete components. The vacuum extraction plate is hollow inside. Several air inlets are provided on both sides of the end of the vacuum extraction plate near the slope surface. Both ends of each air inlet are connected to the surface and the interior of the vacuum extraction plate. One end of the vacuum extraction plate is provided with a first connector that can pass through the sealing membrane. Each first connector can be connected to the vacuum negative pressure device and is connected to the interior of the vacuum extraction plate. The vacuum extraction plate has several air blowing holes on both sides of the end away from the slope surface. An isolation plate is set in the middle of the vacuum extraction plate, which divides the two ends of the vacuum extraction plate into two isolated chambers. Each air inlet is connected to one of the chambers, and each air blowing hole is connected to the other chamber. They are also connected to the slope surface through a first connector. An air pipe is installed on the isolation plate, with the end of the air pipe away from the isolation plate extending out of the vacuum extraction plate. Each air blowing hole is connected to the slope surface through the air pipe. The air outlet of the vacuum negative pressure device is connected to the air pipe.

2. The slope protection device for geotechnical construction according to claim 1, characterized in that, The vacuum negative pressure device includes a vacuum pump, a first main pipe, a second main pipe, an extraction pipe, and a supply pipe. The first main pipe and the second main pipe are respectively connected to the inlet and outlet of the vacuum pump, and both the first main pipe and the second main pipe extend along the length of the slope. Several extraction pipes and supply pipes are arranged along the length of the slope, and each extraction pipe and supply pipe extends along the slope's inclination direction. One end of each extraction pipe is connected to the first main pipe. Each extraction pipe is connected to the first connector of several vacuum exhaust pipes at corresponding positions. Each blowing pipe is connected to the air pipe of several vacuum exhaust pipes at corresponding positions. A water filter is provided on the inlet of the vacuum pump.

3. The slope protection device for geotechnical construction according to claim 2, characterized in that, Each of the inclined piles is arranged in a vacuum tube shape, and the portion of each vacuum extraction plate extending out of the slope surface extends into the corresponding inclined pile. Each air blowing pipe and each extraction pipe are arranged in the corresponding inclined pile.

4. A slope support device for geotechnical construction according to claim 3, characterized in that, Each of the inclined piles includes a pipe trench and a cover. The cross-section of the pipe trench is "U". The air blowing pipe and the air extraction pipe can be installed in the pipe trench. The cover is placed on the pipe trench. Several perforations are arranged along the length of the pipe trench on the lower side.

5. A slope support device for geotechnical construction according to claim 1, characterized in that, The vacuum negative pressure device includes a vacuum pump, a first main pipe, and a second main pipe. The first main pipe and the second main pipe are respectively connected to the air inlet and air outlet of the vacuum pump. Each inclined pile is provided with an air passage in an up-down position. The first main pipe is connected to the air passage located on the lower side of each inclined pile, and the second main pipe is connected to the air passage located on the upper side of each inclined pile. Each first connector is connected to the air passage located on the lower side of the corresponding inclined pile, and each air pipe is connected to the air passage located on the upper side of the corresponding inclined pile. Both ends of the inclined pile are sealed.

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