Cold region special soil engineering collapse reinforcing device and method

Abstract

The invention provides a cold region special soil engineering collapse reinforcing device and method, and belongs to the technical field of civil engineering, the cold region special soil engineering collapse reinforcing device comprises a reinforcing plate, a first reinforcing nail and a second reinforcing nail; the first reinforcing nails and the second reinforcing nails are distributed on the surface of the reinforcing plate, each first reinforcing nail comprises an embedded section and a connecting section, the embedded section is connected with the connecting section, the embedded section is provided with a diameter expanding assembly, and the diameter expanding assembly can stretch out in the radial direction to be inserted into a soil layer. The connecting section is connected with the reinforcing plate so that the reinforcing plate can be attached to a slope, the first reinforcing nail is axially through, a second reinforcing nail is movably arranged in the first reinforcing nail in a sleeved mode, the second reinforcing nail can be drilled into a soil layer in the axial direction, and the expanding assembly can be inserted into the soil layer in the axial movement process. The problem that after construction of a slope in frozen soil engineering in a cold region is completed, no effective reinforcing device is used for reinforcing the slope, and therefore the slope is prone to collapse is solved.

Description

Technical Field

[0001] The invention relates to the technical field of civil engineering, and in particular to a device and method for reinforcing collapse of special soil engineering in cold regions. Background Art

[0002] With the continuous development of the cold region economy, more and more civil engineering projects are being carried out under special geological conditions, and frozen soil areas and slope reinforcement have become key elements that cannot be ignored in these projects. These challenges are particularly significant in major projects such as the Qinghai-Tibet Highway, the Golmud-Lhasa oil pipeline, and the Dabanshan Tunnel.

[0003] In cold regions, frozen ground is a common natural phenomenon, which refers to rocks and soil with a temperature below 0℃ and containing ice. Frozen ground is divided into two categories: permafrost and seasonally frozen ground. Permafrost is frozen all year round, while seasonally frozen ground undergoes a cycle of freezing and thawing with the change of seasons. This freeze-thaw cycle poses a serious threat to the stability and safety of civil engineering.

[0004] Slope reinforcement is an important part of civil engineering in cold regions. When constructing on a slope, if the slope is not reinforced in time, the soil structure of the slope may be damaged as the seasons change and the freeze-thaw cycle proceeds, leading to disasters such as thermal melt collapse. This collapse will not only damage the construction project itself, but may also have a serious impact on the surrounding environment, such as damaging transportation facilities and affecting residents' lives. In view of this, the inventor proposed a device and method for reinforcing collapse of special soil engineering in cold regions. Summary of the invention

[0005] In view of the shortcomings of the prior art mentioned above, the purpose of the present invention is to provide a collapse reinforcement device and method for special soil engineering in cold regions, which is used to solve the problem that after the construction of frozen soil engineering in cold regions has a slope, there is no effective reinforcement device to reinforce the slope, which easily causes the slope to collapse.

[0006] To achieve the above-mentioned and other related purposes, the present invention provides a cold region special soil engineering collapse reinforcement device, comprising a reinforcement plate, a first reinforcement nail and a second reinforcement nail; There are multiple first and second reinforcement nails distributed on the surface of the reinforcement plate. The first reinforcement nail includes an embedded section and a connecting section. The embedded section and the connecting section are connected. The embedded section is provided with an expansion component. The expansion component can be extended radially to be inserted into the soil layer. The connecting section is connected to the reinforcement plate so that the reinforcement plate is attached to the slope. The first reinforcement nail is axially penetrated and has a second reinforcement nail movably sleeved inside. The second reinforcement nail can be drilled into the soil layer axially, and the expansion component is inserted into the soil layer during the axial movement.

[0007] Optionally, the reinforcement plate includes an inner plate, a rib plate and an outer plate, the rib plate is provided with multiple rib plates arranged at intervals and located between the inner plate and the outer plate, both ends of which are respectively fixedly connected to the inner plate and the outer plate, and the inner plate has multiple conical particles fixedly connected to one side facing the soil layer.

[0008] Optionally, the diameter expansion assembly includes an insert and a first abutment member; The insert comprises a hook-shaped insert end and an abutment end, the hook-shaped insert end and the abutment end are connected, the first abutment is slidably connected to the first reinforcing nail and the first abutment can only move axially, a through groove is provided on the side of the embedded section of the first reinforcing nail, the insert is rotatably mounted in the through groove, and the hook-shaped insert end can enter and exit the through groove to be inserted into the soil layer; Initially, the hook-shaped insertion end is located in the through groove, and the hook-shaped insertion end is lower than the outer peripheral surface of the first reinforcing nail; When the operation is terminated, the abutting end is driven by the first abutting member to insert the hook-shaped insertion end into the soil layer.

[0009] Optionally, the radial dimension of one end of the second reinforcement nail drilled into the soil layer gradually decreases, and a spiral protrusion is fixedly connected to the outer surface.

[0010] Optionally, it further includes a first flexible member, a second flexible member, a liquid supply pipe and a liquid outlet pipe; A flow cavity is arranged around the inner circumference of the first reinforcing nail, and the flow cavity is symmetrically arranged with respect to the vertical center plane of the through groove, and the flow cavity is used to pass a first solution, and the end surface of the flow cavity away from the connection section of the first reinforcing nail is connected to a first flexible member, and the surface of the flow cavity facing the second reinforcing nail is connected to a second flexible member, and an injection port and a discharge port for the first solution to enter and exit are provided on the end surface of the first reinforcing nail away from the embedded section, one end of the liquid supply pipe is connected to the injection port, and the other end is connected to the flow cavity, and one end of the liquid outlet pipe is connected to the discharge port, and the other end is connected to the flow cavity; The injection port is detachably connected to a second stopcock, and the discharge port is detachably connected to a third stopcock; When the first liquid is not introduced, the first flexible member and the second flexible member are stacked in the flow chamber in a stacked state, and there is still some remaining space in the flow chamber after the first flexible member and the second flexible member are received; A limit platform is fixedly provided on the outer circumference of the second reinforcing nail, and the outer circumference of the limit platform is rotatably matched with the inner circumference of the first reinforcing nail. The side of the limit platform is in contact with the first flexible member. The interior of the second reinforcing nail is in the shape of a blind hole for filling the second solution. A gap is left between the liquid supply pipe and the liquid outlet pipe and the inner circumference of the first reinforcing nail.

[0011] Optionally, the first solution is water, and the second solution is liquid nitrogen.

[0012] Optionally, a blocking assembly is further provided at the injection port, the blocking assembly comprising a second elastic member, a blocking head and a receiving chamber, the receiving chamber is opened at the first reinforcing nail, the receiving chamber is communicated with the flow chamber through a liquid supply pipe, the blocking head is slidably connected to the receiving chamber, one end of the second elastic member is fixedly connected to the blocking head, and the other end is connected to the receiving chamber, and the elastic force of the second elastic member causes the blocking head to abut against the inner wall of the receiving chamber.

[0013] Optionally, it also includes a first plug, which is threadedly connected to the second reinforcement nail, and the first plug is used to close the blind hole opening of the second reinforcement nail. The opening of the blind hole of the second reinforcement nail is also provided with a hexagonal groove, and the hexagonal groove is located between the first plug and the blind hole.

[0014] Optionally, it further comprises a limiting component, which is used to limit the insertion member when it rotates to the end state, and the limiting component comprises a third flexible member, a first elastic member, a second abutting member and a sliding groove; An abutment hole is provided on the side of the insert, the sliding groove is provided on the first reinforcing nail, the sliding groove is communicated with the through groove, the second abutment is located in the sliding groove, one end of the first elastic member is fixedly connected to the second abutment, and the other end is connected to the sliding groove, the third flexible member is movably connected to the first reinforcing nail, one end of the third flexible member is fixedly connected to the second abutment, and the other end passes through the end surface of the first reinforcing nail; Initially, the second abutment member abuts against the side surface of the inserting member under the elastic force of the first elastic member; When the inserting member rotates to a stop state, the second abutting member enters into the abutting hole under the elastic force of the first elastic member.

[0015] A method for reinforcing collapse of special soil engineering in cold regions, using the above-mentioned reinforcement device, comprises the following steps: Prefabricated hole production: Use a punching device to drill a prefabricated hole on the slope, then place a reinforcement plate, with the inner plate of the reinforcement plate with the conical particles facing the soil layer, and the first reinforcement nail is sleeved with the second reinforcement nail. Then, the first reinforcement nail is placed in the prefabricated hole, and the first reinforcement nail and the second reinforcement nail are in contact with the bottom of the prefabricated hole; Loose frozen soil: the injection port and the discharge port of the first reinforcement nail are opened, the discharge port is connected to a container with a hose, the container is used to hold the first solution flowing out of the discharge port, the first solution is introduced from the injection port by using a liquid injection device, the first solution flows through the flow cavity and flows out from the discharge port, after waiting for a period of time, the flow of the first solution makes the deep frozen soil around the flow cavity soft, after the frozen soil becomes soft, the second reinforcement nail is rotated; the spiral protrusion of the second reinforcement nail drills into the soil layer along the axial direction, and at the same time drives the first abutment to move, after the second reinforcement nail drills into the soil layer for a certain distance, the first abutment Abutting against the abutting end of the insert, the hook-shaped inserting end of the insert is inserted into the soil layer until the second abutting member completes the limiting of the insert under the action of the first elastic member; then, tighten the third cock, close the discharge port, use the pressure device to apply pressure from the injection port to expand the first flexible member and the second flexible member, the first flexible member fills the space between the limit platform and the first flexible member after the axial displacement of the second reinforcement nail, and the second flexible member fills the residual space between the second flexible member and the outer peripheral surface of the second reinforcement nail, then, remove the pressure device and tighten the second cock; Filling with the second solution: inject the second solution into the second reinforcement nail, then tighten the first stopcock; wait for a while, the second solution changes the first solution in the flow cavity from liquid to solid, and makes the softened soil layer around the flow cavity harden again.

[0016] As described above, the present invention has the following beneficial effects: In the present application, the reinforcement plate is attached to the inclined surface through the cooperation between the reinforcement plate, the first reinforcement nail and the second reinforcement nail, and the reinforcement plate is deeply inserted into the soil layer in combination with the first reinforcement nail and the second reinforcement nail, so that the reinforcement plate, under the action of itself and the first reinforcement nail and the second reinforcement nail, completes the reinforcement of the surface and the interior of the soil layer, effectively reducing the surface of the inclined surface from being affected by the external temperature and causing freeze-thaw phenomenon, thereby reducing the risk of collapse or landslide of the inclined surface. The second reinforcement nail can drill into a deeper soil layer axially through the spiral protrusion, thereby strengthening the connection between the second reinforcement nail and the soil layer. Before the second reinforcement nail penetrates into the soil layer, the flowing water is used to make the frozen soil around the flow cavity soft to a certain extent, so as to facilitate the insertion of the hook-shaped insertion end of the insert into the frozen soil layer during the axial penetration of the second reinforcement nail, and then fill the second reinforcement nail with liquid nitrogen. The liquid nitrogen makes the soft soil hard again. At the same time, the liquid nitrogen changes the water from liquid to solid. In the process of the liquid nitrogen changing the water from liquid to solid, the volume of the water increases, and the solid water fastens the first reinforcement nail and the second reinforcement nail through the first flexible member and the second flexible member. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the exploded structure showing the reinforced plate in one orientation.

[0018] Figure 2 Schematic diagram of the stiffened plate structure shown in one orientation.

[0019] Figure 3 Shown is a schematic diagram of the position structure of the first reinforcement nail and the second reinforcement nail.

[0020] Figure 4 Shown is a top view of the first reinforcement nail and the second reinforcement nail after installation.

[0021] Figure 5 Display as Figure 4 Cross-sectional view at AA in the middle.

[0022] Figure 6 A schematic diagram of the structure shown as an insert.

[0023] Figure 7 Shown is a schematic structural diagram of the first reinforcing nail and related components.

[0024] Figure 8 Shown is a schematic diagram of the internal structure of the first reinforcement nail and related components.

[0025] Fig. 9 Display as Figure 8 Enlarged view of point A in the middle.

[0026] Fig.10 Shown is a schematic structural diagram of the second reinforcement nail.

[0027] Fig.11 Shown is a schematic diagram of the internal structure of the second reinforcement nail.

[0028] Component number description Among them: reinforcement plate 1, inner plate 101, rib plate 102, outer plate 103, first reinforcement nail 2, embedded section 201, through groove 2011, connecting section 202, second reinforcement nail 3, spiral protrusion 301, limit platform 302, hexagonal groove 303, insert 4, hook-shaped insertion end 401, abutment end 402, abutment hole 403, first abutment member 5, first flexible member 6, second flexible member 7, liquid supply pipe 8, liquid outlet pipe 9, second elastic member 10, cut-off head 11, accommodating chamber 12, third flexible member 13, sliding groove 14, second abutment member 15. DETAILED DESCRIPTION

[0029] The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0030] See also Figures 1 to 11. It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0031] The following embodiments are only for illustration purposes and can be combined with each other, and are not limited to the contents presented in the following single embodiments.

[0032] See also Figure 1-11 , the present invention provides a cold region special soil engineering collapse reinforcement device, comprising a reinforcement plate 1, a first reinforcement nail 2 and a second reinforcement nail 3; There are multiple first reinforcement nails 2 and second reinforcement nails 3, distributed on the surface of the reinforcement plate 1, such as Figure 1 Four holes are opened on the reinforcement plate 1, and the first reinforcement nail 2 and the second reinforcement nail 3 are located in the holes. The first reinforcement nail 2 includes an embedded section 201 and a connecting section 202. The embedded section 201 and the connecting section 202 are connected. The embedded section 201 is provided with an expansion component, which can be extended radially to be inserted into the soil layer. The connecting section 202 is connected to the reinforcement plate 1 so that the reinforcement plate 1 is attached to the slope. The connecting section 202 includes a limiting disk, and the diameter of the limiting disk is larger than the diameter of the hole. The first reinforcement nail 2 is axially penetrated and the second reinforcement nail 3 is movably sleeved inside. The second reinforcement nail 3 can be drilled into the soil layer axially, and the expansion component is inserted into the soil layer during the axial movement. In the present application, through the cooperation between the reinforcement plate 1, the first reinforcement nail 2 and the second reinforcement nail 3, the reinforcement plate 1 is attached to the slope, and the first reinforcement nail 2 and the second reinforcement nail 3 are combined to penetrate into the soil layer, so that the reinforcement plate 1, under the action of itself and the first reinforcement nail 2 and the second reinforcement nail 3, completes the reinforcement of the surface and interior of the soil layer, effectively reduces the freeze-thaw phenomenon of the surface of the slope due to the influence of the external temperature, thereby reducing the risk of collapse or landslide of the slope.

[0033] In this embodiment, the reinforcement plate 1 includes an inner plate 101, a rib plate 102, and an outer plate 103. A plurality of rib plates 102 are spaced apart and located between the inner plate 101 and the outer plate 103, and both ends are fixedly connected to the inner plate 101 and the outer plate 103 respectively. A plurality of conical particles are fixedly connected to the surface of the inner plate 101 facing the soil layer. In this embodiment, the rib plate 102 is in a "C" shape. The rib plate 102 separates the inner plate 101 and the outer plate 103, and there is a certain degree of hollow inside, which can hinder the transmission of external temperature or vibration and is beneficial to the protection of the inclined surface. In this embodiment, a plurality of conical particles are fixedly connected to the surface of the inner plate 101 facing the soil layer, which can make the contact between the inner plate 101 and the soil layer surface more stable.

[0034] In this embodiment, as Figures 3 to 6 , the diameter-expanding assembly includes an insert 4 and a first abutting member 5; The insert 4 includes a hook-shaped insertion end 401 and an abutting end 402. The hook-shaped insertion end 401 and the abutting end 402 are connected. The first abutting member 5 is slidably connected to the first reinforcing nail 2 and the first abutting member 5 can only move axially. A through groove 2011 is formed on the side surface of the buried section 201 of the first reinforcing nail 2. The insert 4 is rotatably installed in the through groove 2011, and the hook-shaped insertion end 401 can enter and exit the through groove 2011 to insert into the soil layer; Initially, the hook-shaped insertion end 401 is located in the through groove 2011, and the hook-shaped insertion end 401 is lower than the outer peripheral surface of the first reinforcing nail 2; At the end, under the drive of the first abutting member 5, the abutting end 402 makes the hook-shaped insertion end 401 insert into the soil layer. In this embodiment, initially, the hook-shaped insertion end 401 is located in the through groove 2011, and the hook-shaped insertion end 401 is lower than the outer peripheral surface of the first reinforcing nail 2. The purpose of this design is that during the process of inserting the first reinforcing nail 2 into the prefabricated hole, the insert 4 will not scrape the prefabricated hole. This can be achieved by arranging mutually attracting magnetic members at the corresponding positions of the second reinforcing nail 3 and the insert 4. Specifically, a first magnetic member is embedded in the insert 4, and a second magnetic member that mutually attracts the first magnetic member is embedded in the second reinforcing nail 3. The first magnetic member and the second magnetic member can be magnets. A mutually cooperating inclined surface is formed at the abutting position between the abutting end 402 of the insert 4 and the first abutting member 5, which is convenient for the first abutting member 5 to insert from the inclined surface during axial movement, causing the insert 4 to rotate. In this embodiment, a T-shaped sliding table is fixedly connected to the top end of the first abutting member 5, and a T-shaped sliding groove is formed at the corresponding position on the inner surface of the first reinforcing nail 2. The T-shaped sliding table slides in the T-shaped sliding groove. By designing the T-shaped sliding table and the T-shaped sliding groove, the axial movement of the first abutting member 5 is more stable.

[0035] In this embodiment, the radial dimension of one end of the second reinforcing nail 3 drilled into the soil layer gradually decreases, and a spiral protrusion 301 is fixedly connected to the outer surface. In this embodiment, one end of the second reinforcing nail 3 can be a sharp corner, which can better drill into the soil layer. When placed in the prefabricated hole, the sharp corner of the second reinforcing nail 3 and the first reinforcing nail 2 are in contact with the bottom of the prefabricated hole. In order to enable the first reinforcing nail 2 to be better placed in the prefabricated hole, the end face of the first reinforcing nail 2 away from the connecting section 202 is designed to be an annular truncated cone, which is also to facilitate the first reinforcing nail 2 to be better placed in the prefabricated hole.

[0036] In this embodiment, Figure 8 , further comprising a first flexible member 6, a second flexible member 7, a liquid supply pipe 8 and a liquid outlet pipe 9; The inner circumference of the first reinforcing nail 2 is surrounded by a flow cavity, which is symmetrically arranged about the vertical center plane of the through groove 2011. The flow cavity is used to pass the first solution. The end face of the flow cavity away from the connecting section 202 of the first reinforcing nail 2 is connected to the first flexible member 6, and the side of the flow cavity facing the second reinforcing nail 3 is connected to the second flexible member 7. The end face of the first reinforcing nail 2 away from the buried section 201 is provided with an injection port and an outlet port for the first solution to enter and exit. One end of the liquid supply pipe 8 is connected to the injection port, and the other end is connected to the flow cavity. One end of the liquid outlet pipe 9 is connected to the outlet port, and the other end is connected to the flow cavity. In this embodiment, the liquid supply pipe 8 and the liquid outlet pipe 9 are both designed to be Y-shaped. After the first liquid flows into the injection port, it is divided into two and flows into the upper ends of the flow cavities on both sides. The first liquid then flows out of the liquid outlet pipe 9 from the lower ends of the flow cavities on both sides, and the two are combined into one. In this embodiment, the liquid supply pipe 8 and the liquid outlet pipe 9 are used to reduce the impact on the soil layer near the surface during the transportation process when the first liquid is transported.

[0037] The injection port is detachably connected to a second plug, and the discharge port is detachably connected to a third plug; in this embodiment, the second plug and the third plug are both connected to the injection port and the discharge port in a threaded manner; the second plug and the third plug are both provided with a slot for easy twisting; When the first liquid is not introduced, the first flexible member 6 and the second flexible member 7 are stacked in the flow cavity in a stacked state, and there is still residual space in the flow cavity after the first flexible member 6 and the second flexible member 7 are received; the residual space is set, and when the first flexible member 6 and the second flexible member 7 are in a stacked state, the first liquid is introduced, and the first liquid can flow in the flow cavity, thereby making the frozen soil around the flow cavity soft. Considering that the second reinforcing nail 3 needs to be rotated later, the outer peripheral surface of the second reinforcing nail 3 may produce slight friction with the stacked first flexible member 6 and the second flexible member 7, especially the second flexible member 7. Therefore, the first flexible member 6 and the second flexible member 7 can be made of TPU or PFPU, etc. TPU or PFPU materials have good elasticity and wear resistance. In order to further reduce friction, a certain lubricant can also be applied to the corresponding position of the second reinforcing nail 3.

[0038] like Figure 5 and Fig.10 The outer circumference of the second reinforcing nail 3 is fixed with a limiting platform 302, the outer circumference of the limiting platform 302 is rotatably matched with the inner circumference of the first reinforcing nail 2, the side of the limiting platform 302 is in contact with the first flexible member 6, the interior of the second reinforcing nail 3 is in the shape of a blind hole for filling the second solution, and the liquid supply pipe 8 and the liquid outlet pipe 9 leave a gap with the inner circumference of the first reinforcing nail 2. In this embodiment, after the first reinforcing nail 2 and the second reinforcing nail 3 are placed in the prefabricated hole, the end face of the embedded section of the first reinforcing nail 2 and the sharp corner of the spiral protrusion 301 of the second reinforcing nail 3 abut against the bottom end of the prefabricated hole, the limiting platform 302 initially limits the first flexible member 6, and the outer circumference of the second reinforcing nail 3 initially limits the second flexible member 7, so that when the first liquid is passed, the first flexible member 6 and the second flexible member 7 will not expand and unfold, which is convenient for the flow of the first liquid. In this embodiment, there is a gap between the liquid supply pipe 8 and the liquid outlet pipe 9 and the inner circumference of the first reinforcing nail 2. The purpose of this design is to prevent the liquid supply pipe 8 and the liquid outlet pipe 9 from flowing and make the layer of the soil layer close to the surface become soft. In this section of the liquid supply pipe 8 and the liquid outlet pipe 9, a heat insulation layer can also be designed to further prevent the transfer of temperature. The heat insulation layer can be made of polystyrene.

[0039] In this embodiment, the first solution is water and the second solution is liquid nitrogen. Preferably, the first solution can be warm water with a water temperature of 50-60 degrees Celsius. Passing warm water can better soften the frozen soil near the flow cavity.

[0040] In this embodiment, Fig. 9 , a blocking assembly is also provided at the injection port, the blocking assembly includes a second elastic member 10, a blocking head 11 and a receiving chamber 12, the receiving chamber 12 is opened in the first reinforcing nail 2, the receiving chamber 12 is communicated with the flow chamber through the liquid supply pipe 8, the blocking head 11 is slidably connected in the receiving chamber 12, one end of the second elastic member 10 is fixedly connected to the blocking head 11, and the other end is connected to the receiving chamber 12, and the elastic force of the second elastic member 10 makes the blocking head 11 abut against the inner wall of the receiving chamber 12. In this embodiment, one end of the blocking head 11 is rounded, which is convenient for the insertion of the injection pipe / pressurization pipe of the injection device / pressurization device. When the injection device / pressurization device is removed, the blocking head 11 automatically blocks the injection port under the action of the second elastic member 10.

[0041] In this embodiment, Fig.11, and further includes a first plug, which is not shown. The first plug is threadedly connected to the second reinforcing nail 3, and the first plug is used to close the blind hole opening of the second reinforcing nail 3. The opening of the blind hole of the second reinforcing nail 3 is also provided with an inner hexagonal groove 303, and the inner hexagonal groove 303 is located between the first plug and the blind hole. In this embodiment, the inner hexagonal groove 303 is designed to facilitate the operator to rotate it with a hexagonal wrench, and the first plug is designed to seal the second liquid after rotating and injecting the second liquid.

[0042] In this embodiment, Figures 6 to 8 , further comprising a limiting assembly for limiting the insertion member 4 when it rotates to a terminal state, the limiting assembly comprising a third flexible member 13, a first elastic member, a second abutting member 15 and a sliding groove 14; An abutment hole 403 is provided on the side of the insert 4, a sliding groove 14 is provided on the first reinforcing nail 2, the sliding groove 14 is communicated with the through groove 2011, the second abutment member 15 is located in the sliding groove 14, one end of the first elastic member is fixedly connected to the second abutment member 15, and the other end is connected to the sliding groove 14, the third flexible member 13 is movably connected to the first reinforcing nail 2, one end of the third flexible member 13 is fixedly connected to the second abutment member 15, and the other end passes through the end surface of the first reinforcing nail 2; Initially, the second abutment member 15 abuts against the side surface of the inserting member 4 under the elastic force of the first elastic member; When the inserting member 4 rotates to the final state, the second abutting member 15 enters the abutting hole 403 under the elastic force of the first elastic member.

[0043] In this embodiment, the first elastic member can be a spring, and the third flexible member 13 can be a steel rope or other flexible materials. One end of the steel rope is fixedly connected to the second abutment member 15, and the other end passes through the end face of the first reinforcing nail 2. When the insert 4 is initially inserted, the second abutment member 15 abuts against the side of the insert 4 under the elastic force of the first elastic member. After the insert 4 rotates, the second abutment member 15 is inserted into the abutment hole 403 under the elastic force of the first elastic member. At the same time, the second abutment member 15 drives the third flexible member 13 to shrink inward. After the operator observes the shrinkage of the third flexible member 13, it can be known that the second abutment member 15 has been inserted into the abutment hole 403 on the side of the insert 4. The third flexible member 13 also has another function, which is to pull the end of the third flexible member 13 located on the end face of the first reinforcing nail 2 to overcome the elastic force of the first elastic member, so that the second abutment member 15 can be disengaged from the abutment hole 403, thereby releasing the restriction on the insert 4. It is convenient for the subsequent disassembly of the device.

[0044] The disassembly process is as follows: first, extract the second solution, wait for the first solution in the first flexible member 6 and the second flexible member 7 to melt, unscrew the second stopcock and the third stopcock, use the blowing device to blow out the first solution, and after the blowing is completed, tighten the third stopcock, use the negative pressure device to draw a vacuum, and retract the first flexible member 6 and the second flexible member 7, and finally reversely rotate the second reinforcement nail 3. After the second reinforcement nail 3 retracts, first drive the first abutment member 5 to retreat. After the first abutment member 5 retreats, pull the third flexible member 13 to make the second abutment member 15 disengage from the abutment hole 403, thereby releasing the restriction on the insert 4. At the same time, slightly pry the first reinforcement nail 2 outward, the insert 4 rotates and retracts, and is reattached to the second reinforcement nail 3 under the action of the first magnetic member and the second magnetic member, so that the device can be taken out.

[0045] This application also includes a method for reinforcing special soil engineering collapse in cold regions, comprising the following steps: Prefabricated hole production: Use a punching device to drill a prefabricated hole on the slope, then place the reinforcement plate 1, and lay the inner plate 101 of the reinforcement plate 1 with the side of the conical particles facing the soil layer. The first reinforcement nail 2 is sleeved with the second reinforcement nail 3. Then, the first reinforcement nail 2 is placed in the prefabricated hole, and the first reinforcement nail 2 and the second reinforcement nail 3 are in contact with the bottom of the prefabricated hole; in this embodiment, an external hexagon is also provided on the outer peripheral surface of the first reinforcement nail 2, so that the first reinforcement nail 2 can be rotated to adjust the extension direction of the insert 4.

[0046] Soft frozen soil: the injection port and the discharge port of the first reinforcement nail 2 are opened, the discharge port is connected to a container with a hose, the container is used to hold the first solution flowing out of the discharge port, the first solution is introduced from the injection port by using a liquid injection device, and the liquid injection device can directly use the outlet pipe of a water pipe during specific use, the first solution flows through the flow cavity and flows out from the discharge port, wait for a period of time, the flow of the first solution makes the deep frozen soil around the flow cavity soft, and after the frozen soil becomes soft, the second reinforcement nail 3 is rotated. In this application, the first solution is used The hexagonal wrench is inserted into the hexagonal groove 303 to realize the rotation of the second reinforcing nail 3; the spiral protrusion 301 of the second reinforcing nail 3 drills into the soil layer axially, and at the same time drives the first abutment 5 to move. After the second reinforcing nail 3 drills into the soil layer for a certain distance, that is, after the spiral protrusion 301 of the second reinforcing nail 3 drills into a part of the soil layer, the first abutment 5 abuts against the abutment end 402 of the insert 4, so that the hook-shaped insertion end 401 of the insert 4 is inserted into the soil layer until the second abutment 15 is in contact with the first elastic member. , the insert 4 is limited under the action of; then, the third plug is tightened, the discharge port is closed, and the pressure device is used to apply pressure from the injection port to expand the first flexible member 6 and the second flexible member 7. After the first flexible member 6 fills the axial displacement of the second reinforcing nail 3, the space between the limit platform 302 and the first flexible member 6 is vacated, and the second flexible member 7 fills the residual space between the second flexible member 7 and the outer peripheral surface of the second reinforcing nail 3. Then, the pressure device is removed and the second plug is tightened; the pressure device can be an air compressor, and the high pressure generated by the air compressor pressurizes the first liquid to expand the first flexible member 6 and the second flexible member 7; the purpose of expanding the first flexible member 6 and the second flexible member 7 is that after the second reinforcing nail 3 is subsequently added with liquid nitrogen, the liquid nitrogen causes the water in the first flexible member 6 and the second flexible member 7 to change from liquid to solid. In the process of liquid nitrogen causing the water to change from liquid to solid, the volume of the water increases, and the solid water passes through the first flexible member and the second flexible member to fasten the first reinforcing nail and the second reinforcing nail; Filling with the second solution: inject the second solution into the second reinforcement nail 3, then tighten the first stopcock; wait for a while, the second solution changes the first solution in the flow cavity from liquid to solid, and makes the softened soil layer around the flow cavity harden again.

[0047] Working principle of the present invention: Prefabricated hole production: a prefabricated hole is drilled on the slope using a punching device, and then a reinforcement plate 1 is placed, with the inner plate 101 of the reinforcement plate 1 being laid with the side with conical particles facing the soil layer, and the first reinforcement nail 2 is sleeved with the second reinforcement nail 3, and then the first reinforcement nail 2 is placed in the prefabricated hole, and the first reinforcement nail 2 and the second reinforcement nail 3 are in contact with the bottom of the prefabricated hole; Soft frozen soil: the injection port and the discharge port of the first reinforcing nail 2 are opened, and the discharge port is connected to a holding container with a hose. The holding container is used to hold the first solution flowing out of the discharge port. The first solution is introduced into the injection port by using a liquid injection device. When in use, the liquid injection device can directly use the water outlet pipe of the water pipe. The first solution flows through the flow cavity and flows out from the discharge port. After waiting for a period of time, the flow of the first solution makes the deep frozen soil around the flow cavity soften. After the frozen soil becomes soft, the second reinforcing nail 3 is rotated. In this application, a hexagonal wrench is inserted into the hexagonal groove 303 to realize the rotation of the second reinforcing nail 3; the spiral protrusion 301 of the second reinforcing nail 3 drills into the soil layer along the axial direction, and at the same time drives the first abutment 5 to move, and the second reinforcing nail 3 drills into the soil layer for a distance After separation, that is, after the spiral protrusion 301 of the second reinforcing nail 3 has drilled into a part of the soil layer, the first abutment member 5 abuts against the abutment end 402 of the insert 4, so that the hook-shaped insertion end 401 of the insert 4 is inserted into the soil layer, until the second abutment member 15 completes the limiting of the insert 4 under the action of the first elastic member; then, tighten the third stopcock, close the discharge port, use the pressure device to apply pressure from the injection port to expand the first flexible member 6 and the second flexible member 7, the first flexible member 6 fills the vacated space between the limit platform 302 and the first flexible member 6 after the axial displacement of the second reinforcing nail 3, and the second flexible member 7 fills the residual space between the second flexible member 7 and the outer peripheral surface of the second reinforcing nail 3, then remove the pressure device and tighten the second stopcock; Filling with the second solution: inject the second solution into the second reinforcement nail 3, then tighten the first stopcock; wait for a while, the second solution changes the first solution in the flow cavity from liquid to solid, and makes the softened soil layer around the flow cavity harden again.

[0048] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. Cold region special soil engineering collapse reinforcement device, characterized by: It comprises a reinforcing plate (1), a first reinforcing nail (2) and a second reinforcing nail (3); A plurality of the first reinforcing nails (2) and the second reinforcing nails (3) are provided and distributed on the surface of the reinforcing plate (1); the first reinforcing nail (2) comprises an embedded section (201) and a connecting section (202); the embedded section (201) and the connecting section (202) are connected; the embedded section (201) is provided with a diameter expansion component, the diameter expansion component can be extended radially to be inserted into the soil layer; the connecting section (202) is connected to the reinforcing plate (1) so that the reinforcing plate (1) is attached to the slope; the first reinforcing nail (2) is axially penetrated and a second reinforcing nail (3) is movably sleeved inside; the second reinforcing nail (3) can be drilled into the soil layer axially, and the diameter expansion component is inserted into the soil layer during the axial movement.

2. The cold region special soil engineering collapse reinforcement device according to claim 1 is characterized in that: The reinforcement plate (1) comprises an inner plate (101), a rib plate (102) and an outer plate (103); the rib plate (102) is provided with a plurality of ribs arranged at intervals and located between the inner plate (101) and the outer plate (103); both ends of the ribs are respectively fixedly connected to the inner plate (101) and the outer plate (103); and a plurality of conical particles are fixedly connected to a surface of the inner plate (101) facing the soil layer.

3. The cold region special soil engineering collapse reinforcement device according to claim 1 is characterized in that: The diameter expansion assembly comprises an insert (4) and a first abutment member (5); The insert (4) comprises a hook-shaped insert end (401) and an abutment end (402), the hook-shaped insert end (401) and the abutment end (402) being connected, the first abutment member (5) being slidably connected to the first reinforcing nail (2) and the first abutment member (5) being only capable of axial movement, a through groove (2011) being provided on the side of the embedded section (201) of the first reinforcing nail (2), the insert (4) being rotatably mounted in the through groove (2011), and the hook-shaped insert end (401) being capable of entering and exiting the through groove (2011) so as to be inserted into the soil layer; Initially, the hook-shaped insertion end (401) is located in the through groove (2011), and the hook-shaped insertion end (401) is lower than the outer peripheral surface of the first reinforcing nail (2); At the end, the abutment end (402) is driven by the first abutment member (5) to cause the hook-shaped insertion end (401) to be inserted into the soil layer.

4. The cold region special soil engineering collapse reinforcement device according to claim 1 is characterized in that: The radial dimension of one end of the second reinforcing nail (3) drilled into the soil layer gradually decreases, and a spiral protrusion (301) is fixedly connected to the outer surface.

5. The cold region special soil engineering collapse reinforcement device according to claim 4 is characterized in that: It also includes a first flexible member (6), a second flexible member (7), a liquid supply pipe (8) and a liquid outlet pipe (9); A flow cavity is arranged around the inner circumference of the first reinforcing nail (2), and the flow cavity is arranged symmetrically with respect to the vertical center plane of the through groove (2011). The flow cavity is used to pass a first solution. The end surface of the flow cavity away from the connecting section (202) of the first reinforcing nail (2) is connected to a first flexible member (6), and the surface of the flow cavity facing the second reinforcing nail (3) is connected to a second flexible member (7). The end surface of the first reinforcing nail (2) away from the embedded section (201) is provided with an injection port and an outlet for the first solution to enter and exit. One end of the liquid supply pipe (8) is connected to the injection port, and the other end is connected to the flow cavity. One end of the liquid outlet pipe (9) is connected to the outlet, and the other end is connected to the flow cavity. The injection port is detachably connected to a second stopcock, and the discharge port is detachably connected to a third stopcock; When the first liquid is not introduced, the first flexible member (6) and the second flexible member (7) are stacked in the flow chamber in a stacked state, and there is still residual space in the flow chamber after the first flexible member (6) and the second flexible member (7) are received; A limiting platform (302) is fixedly provided on the outer circumference of the second reinforcing nail (3), the outer circumference of the limiting platform (302) is rotatably matched with the inner circumference of the first reinforcing nail (2), the side surface of the limiting platform (302) is in contact with the first flexible member (6), the interior of the second reinforcing nail (3) is in the shape of a blind hole for filling a second solution, and a gap is left between the liquid supply pipe (8) and the liquid outlet pipe (9) and the inner circumference of the first reinforcing nail (2).

6. The cold region special soil engineering collapse reinforcement device according to claim 5 is characterized in that: The first solution is water, and the second solution is liquid nitrogen.

7. The cold region special soil engineering collapse reinforcement device according to claim 6 is characterized in that: A blocking assembly is also provided at the injection port, the blocking assembly comprising a second elastic member (10), a blocking head (11) and a receiving chamber (12); the receiving chamber (12) is opened at the first reinforcing nail (2); the receiving chamber (12) is communicated with the flow chamber via a liquid supply pipe (8); the blocking head (11) is slidably connected in the receiving chamber (12); one end of the second elastic member (10) is fixedly connected to the blocking head (11) and the other end is connected to the receiving chamber (12); the elastic force of the second elastic member (10) causes the blocking head (11) to abut against the inner wall of the receiving chamber (12).

8. The cold region special soil engineering collapse reinforcement device according to claim 5 is characterized in that: It also comprises a first plug, which is threadedly connected to the second reinforcing nail (3), and is used to close the blind hole opening of the second reinforcing nail (3). The opening of the blind hole of the second reinforcing nail (3) is also provided with a hexagonal groove (303), and the hexagonal groove (303) is located between the first plug and the blind hole.

9. The cold region special soil engineering collapse reinforcement device according to claim 3 is characterized in that: It also includes a limiting component, which is used to limit the insertion member (4) when it rotates to a terminal state, and the limiting component includes a third flexible member (13), a first elastic member, a second abutting member (15) and a sliding groove (14); The insert (4) has a side surface provided with an abutment hole (403), the sliding groove (14) is provided on the first reinforcing nail (2), the sliding groove (14) is communicated with the through groove (2011), the second abutment member (15) is located in the sliding groove (14), one end of the first elastic member is fixedly connected to the second abutment member (15), and the other end is connected to the sliding groove (14), the third flexible member (13) is movably connected to the first reinforcing nail (2), one end of the third flexible member (13) is fixedly connected to the second abutment member (15), and the other end passes through the end surface of the first reinforcing nail (2); Initially, the second abutment member (15) abuts against the side surface of the inserting member (4) under the elastic force of the first elastic member; When the inserting member (4) rotates to the end state, the second abutting member (15) enters the abutting hole (403) under the elastic force of the first elastic member.

10. A method for reinforcing collapse of special soil engineering in cold regions, using the device for reinforcing collapse of special soil engineering in cold regions as claimed in any one of claims 1 to 9, characterized in that: The following steps are included: Prefabricated hole production: using a drilling device to drill a prefabricated hole on a slope, then placing a reinforcement plate (1), with the inner plate (101) of the reinforcement plate (1) being laid with the side of the conical particles facing the soil layer, and the first reinforcement nail (2) being sleeved with the second reinforcement nail (3), then the first reinforcement nail (2) being placed in the prefabricated hole, and the first reinforcement nail (2) and the second reinforcement nail (3) being in contact with the bottom of the prefabricated hole; Loose frozen soil: the injection port and the discharge port of the first reinforcing nail (2) are opened, the discharge port is connected to a container by a hose, the container is used to hold a first solution flowing out of the discharge port, the first solution is introduced from the injection port by using a liquid injection device, the first solution flows through the flow cavity and flows out from the discharge port, after a period of time, the first solution flows to soften the deep frozen soil around the flow cavity, after the frozen soil becomes soft, the second reinforcing nail (3) is rotated; the spiral protrusion (301) of the second reinforcing nail (3) drills into the soil layer along the axial direction, and at the same time drives the first abutment (5) to move, after the second reinforcing nail (3) drills into the soil layer for a certain distance, the abutment end (401) of the first abutment (5) and the insert (4) are in contact with each other. 2) abutting, so that the hook-shaped insertion end (401) of the insert (4) is inserted into the soil layer until the second abutting member (15) completes the limiting of the insert (4) under the action of the first elastic member; then, tighten the third stopcock, close the discharge port, use the pressure device to apply pressure from the injection port to expand the first flexible member (6) and the second flexible member (7), the first flexible member (6) fills the space between the limit platform (302) and the first flexible member (6) after the axial displacement of the second reinforcement nail (3), and the second flexible member (7) fills the residual space between the second flexible member (7) and the outer peripheral surface of the second reinforcement nail (3), then, remove the pressure device and tighten the second stopcock; Filling the second solution: injecting the second solution into the second reinforcement nail (3), and then tightening the first stopcock; After waiting for a period of time, the second solution changes the first solution in the flow cavity from liquid to solid, and makes the softened soil layer around the flow cavity harden again.

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