A foundation pit group construction structure for multi-row anti-slide piles on high slopes of mountain roads

Abstract

This application relates to the field of blasting protection technology, and in particular to a foundation pit group construction structure for multi-row anti-slide piles on high slopes of mountain roads. It includes multiple foundation pits on the high slope, a blasting protection mechanism installed within the foundation pits, a shock-absorbing filling layer between the foundation pits and the protection mechanism, and a spacing mechanism between batches of anti-slide piles. A blasting device is installed at the lower end of the shock-absorbing filling layer. The blasting protection mechanism effectively blocks flying rocks during blasting and controls the spread of blasting energy. The shock-absorbing filling layer buffers vibration to reduce the energy transmission intensity of the blasting device. The spacing mechanism forms a barrier to extend the vibration path to adjacent batches of anti-slide piles, reducing disturbance to the high slope and existing anti-slide piles, reducing the dependence of anti-slide piles on long-term stability, reducing the construction cycle from 21 days to 4 days, increasing efficiency by more than 80%, reducing road closures and impacts on residents' travel and material transportation, lowering costs and control difficulties, and ensuring safe and efficient construction.

Description

Technical Field

[0001] This application relates to the field of blasting protection technology, and in particular to a foundation pit group construction structure for multi-row anti-slide piles on high slopes of mountain roads. Background Technology

[0002] In the field of mountain engineering construction, the stability control of high slopes is one of the core issues to ensure project safety. High slopes often exist on both sides of mountain roads in low mountain and hilly areas. When the shallow surface layer of a high slope is composed of residual slope deposits, completely weathered or strongly weathered sandstone and shale, or carbonaceous mudstone, its natural stability is poor. Under the influence of external factors such as rainfall, landslides are very likely to occur, which not only threatens the safety of road traffic but may also damage the surrounding infrastructure. Therefore, in order to stabilize high slopes, anti-slide piles are often used to reinforce them in engineering projects. When the slope surface is large, multiple rows of anti-slide piles need to be installed to form an overall support system to improve the reinforcement effect.

[0003] The construction of anti-slide piles requires the excavation of foundation pits in the shallow soil of the high slope. Since the excavation depth of the foundation pits is relatively large, the shallow soil of the high slope can be directly excavated by machinery. However, the middle and lower parts involve rock layers, and blasting equipment is required to excavate through shallow hole blasting to ensure excavation efficiency and foundation pit formation quality.

[0004] In related technologies, the excavation of foundation pits for multi-row anti-slide piles is subject to strict construction restrictions. The excavation of anti-slide piles must adopt a skip-pile method. Taking two rows of anti-slide piles as an example, the foundation pits for the upper row of piles on the high slope are selected for excavation and pouring of anti-slide piles. Adjacent piles are kept at a certain interval. After the concrete pouring of all the anti-slide piles in the first row is completed, the foundation pits are excavated between adjacent anti-slide piles after a seven-day interval. After the concrete pouring of all the anti-slide piles is completed, the foundation pits for the lower row of piles are excavated and poured, with adjacent piles kept at a certain interval. After the seven-day interval, the foundation pits for the lower row of piles are excavated between adjacent anti-slide piles and poured. The construction period for the two rows of anti-slide piles is 21 days.

[0005] However, the excessively long waiting period significantly extended the construction time. For mountainous areas that rely on a single road for access, the extended construction period would result in the road being closed for a long time, affecting the travel of surrounding residents and the transportation of construction materials, while also increasing project costs and the difficulty of safety management. Utility Model Content

[0006] To address the aforementioned issues, this application provides a foundation pit group construction structure for multi-row anti-slide piles on high slopes in mountainous areas.

[0007] This application provides a construction structure for a foundation pit group of multi-row anti-slide piles for high slopes in mountainous areas, employing the following technical solution: A foundation pit group construction structure for multi-row anti-slide piles on high slopes of mountain roads includes multiple foundation pits excavated on the high slope, a blasting protection mechanism, a shock-absorbing filling layer, and multiple spacing mechanisms. The blasting protection mechanism is installed on the foundation pits and includes a frame, blasting sheets, multiple sandbags, a barrier net, and fixing components. The frame is located at the edge of the foundation pit, the blasting sheets cover the surface of the frame, the sandbags are placed on the blasting sheets, the barrier net is placed on the sandbags, and the fixing components fix the blasting sheets, sandbags, and barrier net to the frame as a whole. The shock-absorbing filling layer is located on the side wall of the foundation pit, and the multiple spacing mechanisms are respectively arranged between adjacent batches of anti-slide piles.

[0008] By adopting the above technical solution, the blasting protection mechanism installed in the foundation pit well, based on a frame, forms multiple layers of protection through blasting sheets, sandbags, and barrier nets. The entire blasting protection mechanism is then firmly fixed to the edge of the foundation pit well using fixing components. This effectively blocks flying debris from blasting, precisely controls the diffusion range of blasting energy, significantly enhances operational safety, reduces the direct impact of blasting materials on the surface of high slopes and surrounding facilities, and the shock-absorbing filling layer initially buffers and disperses the vibration energy generated by the blasting device, reducing the energy intensity transmitted from the current construction foundation pit well to adjacent batches of foundation pit wells. The spacing mechanism forms a physical barrier between adjacent batches of anti-slide piles, extending the vibration transmission path and attenuating the residual energy of the blasting device, thus reducing disturbance to the high slope. This low-disturbance characteristic of high slopes and existing anti-slide piles reduces the reliance on excessively long periods for the existing anti-slide piles to stabilize, thus shortening the waiting interval and reducing the need to wait for the anti-slide piles to stabilize naturally. Based on the above, the construction cycle of anti-slide piles can be reduced from the traditional 21 days to 4 days, improving the construction cycle efficiency by more than 80%. This effectively solves the problem of extended total construction period caused by excessively long intervals in traditional construction. For mountainous areas that rely on a single road for access, the shortened construction cycle can reduce road closure time, reduce the impact on the travel of surrounding residents and the transportation of construction materials, and at the same time reduce project cost input and safety management difficulty, achieving efficient construction while ensuring the long-term stability of high slopes and construction safety.

[0009] Preferably, the spacing mechanism includes a plurality of first spacers, a plurality of second spacers, and a plurality of shock-absorbing layers. The length of the first spacers is greater than that of the second spacers. The first spacers and the second spacers are hollow. The shock-absorbing layers are built into the first spacers and the second spacers.

[0010] By adopting the above technical solution, the seismic isolation layer is built into the first spacer and the second spacer. The first spacer and the second spacer form a layered and staggered physical barrier between the anti-slide piles, which further extends the vibration transmission path and gradually attenuates the residual energy of the blasting. This effectively reduces the mutual interference or structural damage caused by the vibration transmission between adjacent anti-slide piles, continuously weakens the disturbance of the blasting to the high slope and the constructed anti-slide piles, helps the anti-slide piles to stabilize quickly, and provides support for shortening the overall construction cycle and the long-term stability of the high slope.

[0011] Preferably, one second spacer is located between two first spacers, the two first spacers are inclined, and each pair of first spacers and one second spacer together form an inclined H-shaped structure.

[0012] By adopting the above technical solution, a second spacer is located between two inclined first spacers, and the three together form an inclined H-shaped structure. The first spacer can specifically separate adjacent batches of anti-slide piles in the same row. For example, the first and second batches of anti-slide piles in the upper row, as well as the second and third batches in the lower row, are separated by the first spacer, effectively blocking the lateral transmission of vibration between different batches of anti-slide piles in the same row. The second spacer in the middle can form a longitudinal barrier between corresponding batches of anti-slide piles in the upper and lower rows. For example, the second batch of anti-slide piles in the upper row and the second batch in the lower row are separated by the second spacer, which fills the protective gap between the upper and lower anti-slide piles. With the synergistic effect of the first and second spacers, different batches of anti-slide piles form a complete energy barrier in both the lateral and longitudinal dimensions, further reducing the cross-interference of vibration between different rows and batches of anti-slide piles, minimizing the impact of vibration on the constructed anti-slide piles, ensuring that the anti-slide piles can quickly reach a stable state, and providing more precise and reliable structural support for shortening the construction interval of adjacent batches of anti-slide piles.

[0013] Preferably, the surfaces of the first spacer and the second spacer are provided with multiple mesh holes. After the blasting is completed, the shock-absorbing layer is removed from the first spacer and the second spacer, and concrete is injected into the first spacer and the second spacer to form a fixed pile.

[0014] By adopting the above technical solutions, the mesh can effectively reduce the overall weight of the spacers, reduce the operational difficulty during transportation and installation, and improve the convenience of construction. In addition, when the blasting vibration is transmitted to the spacers, the mesh can disperse some of the vibration energy, and in conjunction with the built-in shock-absorbing layer, further weaken the vibration transmission efficiency, ultimately enhancing the protection effect on slope stability. After the blasting is completed and the shock-absorbing layer is removed, the mesh provides a penetration channel for the injected concrete, allowing the concrete to fully fill the hollow cavities of the first and second spacers to form fixed piles, improving the structural density and overall strength of the fixed piles. It can also connect adjacent batches of anti-slide piles using the original positions of the first and second spacers, forming a synergistic reinforcement system, further enhancing the overall stability of high slopes, and achieving a deep integration of protective function and structural strength.

[0015] Preferably, the lower surface of the spacer is provided with a pointed portion.

[0016] By adopting the above technical solution, the tip can reduce the resistance when inserting into the stratum by its own structure, and can quickly position the first and second spacers to the preset positions between adjacent batches of anti-slide piles. After the tip penetrates into the stratum, it can form a stable effect similar to anchoring, enhance the anti-displacement ability of the first and second spacers in the blasting vibration environment, reduce the breakage of the vibration isolation path in the same row and the vertical in the upper and lower rows due to the displacement of the first and second spacers, and ensure the stability of the cross-interference protection effect of different batches of anti-slide piles in the early stage. At the same time, when concrete is injected into the first and second spacers to form fixed piles in the later stage, the tip can extend the embedment depth of the fixed piles, increase the contact area and interlocking strength between the fixed piles and the stratum, and further enhance the long-term stability of the high slope.

[0017] Preferably, the plurality of sandbags includes a plurality of large sandbags and a plurality of small sandbags, with the small sandbags located in the middle of the shell and the large sandbags located at the edges of the shell.

[0018] By adopting the above technical solution, the middle part of the blasting cover is the core area of ​​the blasting energy impact. The volume and weight of the small sandbags are more suitable for the middle space. Multiple small sandbags are attached to the surface of the blasting cover to form a uniform coverage. By dispersing the pressure, the direct action of the blasting shock wave is buffered, reducing the risk of damage to the middle part of the blasting cover due to excessive local stress. The edges of the blasting cover are the key parts where flying rocks can easily escape and the edges of the blasting cover are prone to warping. The larger sandbags are heavier and can firmly compact the edges with the weight of the larger sandbags, enhancing the fit between the blasting cover and the frame, effectively preventing flying rocks from splashing from the edge gaps, significantly improving the overall impact resistance and sealing of the blasting cover, and providing a more solid safety guarantee for reducing high slope disturbance and shortening the construction interval.

[0019] Preferably, the cannon is provided with a drooping edge, which abuts against the outer wall of the frame.

[0020] By adopting the above technical solution, the drooping edge abuts against the outer wall of the frame, which can closely fit the frame to form a protective boundary. This further enhances the positional stability of the blasting cover under the impact of blasting, reduces the upward tilting or displacement of the blasting cover due to force, further reduces the escape of flying rocks and debris from the gaps, and reduces the intensity of the blasting shock wave spreading laterally. Combined with the pressurization effect of sandbags, it significantly improves the sealing and impact resistance of blasting protection, providing a more reliable protective barrier to reduce disturbance to high slopes and ensure construction safety.

[0021] Preferably, the fixing assembly includes multiple fixing arms, positioning reels, damping reels, and nylon ropes. The positioning reels and the damping reels are rotatably supported by the fixing arms, and the nylon ropes are wound around the positioning reels and the damping reels and connected to the barrier net.

[0022] By adopting the above technical solution, the fixed mounting arm provides a stable bearing foundation for the positioning and damping reels. The positioning and damping reels can rotate flexibly, allowing the nylon ropes wound on them to smoothly adjust their position and tension. The characteristics of the damping reels also buffer the instantaneous tension on the nylon ropes from the blasting impact, reducing the risk of breakage due to sudden stress. One end of the nylon rope is connected to the barrier net, and with the cooperation of the positioning reels, the tension can be evenly transmitted to all parts of the barrier net. This tightly binds the barrier net, sandbags, blasting cover, and frame into a whole, effectively reducing displacement or detachment caused by the strong impact of the blast. It ensures the continuous effectiveness of the blasting cover's buffering, the sandbags' blocking, and the barrier net's interception functions, further enhancing the blasting protection mechanism's ability to block flying debris and control the diffusion of blasting energy, thus improving the safety and reliability of blasting operations.

[0023] In summary, this application includes at least one of the following beneficial technical effects: 1. The blasting protection mechanism is based on a frame, with multiple layers of protection formed by blasting blocks, sandbags, and barrier nets. The blasting blocks, sandbags, and barrier nets are then fixed to the edge of the frame by fixing components, effectively blocking flying rocks and controlling energy diffusion, reducing direct impact on the surface of the high slope and surrounding facilities. The shock-absorbing filling layer buffers and disperses vibration energy, reducing the intensity transmitted to adjacent foundation pits. The interval mechanism forms a physical barrier between adjacent batches of anti-slide piles, extending the vibration path and attenuating residual energy, reducing disturbance to the high slope. This low-disturbance characteristic reduces the reliance on excessively long stabilization time for anti-slide piles, reducing the construction cycle from the traditional 21 days to 4 days, improving efficiency by more than 80%. It solves the problem of extended total construction period caused by excessively long intervals in traditional construction, while reducing the closure time of mountain roads, reducing the impact on the surrounding area, and reducing engineering costs and management difficulties. Ultimately, it achieves efficient construction while ensuring the long-term stability of the high slope and construction safety. 2. The shock-absorbing layer is built into the first and second spacers, which can directly absorb the blasting vibration energy. Together with the first and second spacers of different lengths, it forms a layered and staggered physical barrier between the anti-slide piles, which can further extend the vibration transmission path, gradually attenuate the residual energy of the blasting, effectively reduce the mutual interference or structural damage caused by the vibration transmission of adjacent anti-slide piles, continuously weaken the disturbance of the blasting to the high slope and the already constructed anti-slide piles, help the anti-slide piles to stabilize quickly, and provide reliable support for shortening the overall construction cycle and the long-term stability of the high slope. 3. A second spacer is located between two inclined first spacers, and the three together form an inclined H-shaped structure. The first spacers can specifically separate adjacent batches of anti-slide piles within the same row, such as the first and second batches in the upper row, or the second and third batches in the lower row. The first spacer effectively blocks the lateral transmission of vibration between different batches of anti-slide piles in the same row. The second spacer in the middle can form a longitudinal barrier between corresponding batches of anti-slide piles in the upper and lower rows, such as the second batch in the upper row and the second batch in the lower row. The second spacer fills the protective gap between the upper and lower rows of anti-slide piles. The first and second spacers work together to form a complete energy barrier in both the lateral and longitudinal dimensions, further reducing the cross-interference of vibration between different rows and batches of anti-slide piles, and minimizing the impact of vibration on the constructed anti-slide piles. Attached Figure Description

[0024] Figure 1 This is a simplified schematic diagram of an embodiment of this application.

[0025] Figure 2 This is a structural schematic diagram of an embodiment of this application.

[0026] Figure 3 This is a structural schematic diagram of an embodiment of this application.

[0027] Figure 4 This is a cross-sectional view of an embodiment of this application.

[0028] Figure 5 yes Figure 4 An enlarged diagram of A in the diagram.

[0029] Figure 6 This is a schematic diagram of the interval mechanism.

[0030] Figure 7 This is a cross-sectional view of the spacing mechanism.

[0031] Explanation of reference numerals in the attached drawings: 1. Excavation pit; 21. Frame; 22. Blasting cover; 221. Drooping edge; 23. Sandbag; 231. Large sandbag; 232. Small sandbag; 24. Barrier net; 25. Fixing component; 251. Fixed mounting arm; 252. Positioning reel; 253. Damping reel; 254. Nylon rope; 3. Shock-absorbing filling layer; 4. Spacer mechanism; 41. First spacer; 42. Second spacer; 43. Mesh; 44. Shock-absorbing layer; 45. Tip. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0033] This application discloses a foundation pit group construction structure for multi-row anti-slide piles on high slopes in mountainous areas. In this embodiment, it is necessary to first excavate foundation pit 1 in the shallow surface soil of the high slope. Since the excavation depth of foundation pit 1 is relatively large, the shallow surface soil of the high slope can be directly excavated by machinery, but the middle and lower parts involve rock layers, so shallow hole blasting is required for excavation.

[0034] Reference Figure 1 In this embodiment, taking two rows of anti-slide piles, with five anti-slide piles in each row as an example, the construction follows the principle of dividing into batches from the two sides to the middle. In the upper row, the first batch of anti-slide piles are a, c, and e. The second batch of construction involves the middle anti-slide piles b and d between a and c, and c and e, completing the construction of the entire upper row. The lower row proceeds in the same logic. The third batch of construction involves the anti-slide piles f, h, and j. Subsequently, the fourth batch of construction involves the middle anti-slide piles g and i between f and h, and h and j. The same applies to multiple rows. Each row follows the order of first the two sides and then the middle. The overall construction proceeds in the process of first the upper row and then the lower row. That is, after completing all batches of construction in the upper row, the lower row is extended.

[0035] Reference Figure 2 and Figure 3 A construction structure for a multi-row anti-slide pile foundation pit group on a high slope of a mountain road includes multiple foundation pits 1 set on the high slope, a blasting protection mechanism, a shock-absorbing filling layer 3, and multiple spacing mechanisms 4. The blasting protection mechanism is installed on the foundation pits 1, the shock-absorbing filling layer 3 is installed on the sidewall of the foundation pits 1 and arranged circumferentially along the sidewall of the foundation pits 1, and the multiple spacing mechanisms 4 are respectively installed between the first batch of anti-slide piles and the second batch of anti-slide piles, between the second batch of anti-slide piles and the third batch of anti-slide piles, and between the third batch of anti-slide piles and the fourth batch of anti-slide piles, with the blasting device located at the lower end of the shock-absorbing filling layer 3.

[0036] This demonstrates that the blasting protection mechanism can effectively block flying rocks during the blasting process and control the diffusion range of blasting energy, enhancing the safety protection capability of blasting operations and reducing the direct impact of blasting materials on the surface of high slopes and surrounding facilities. Simultaneously, in conjunction with the damping filling layer 3's buffering effect on vibration and the spacing mechanism 4's blocking effect on vibration transmission, the damping filling layer 3 initially buffers and disperses the vibration energy generated by the blasting device, reducing the energy intensity transmitted from the current construction pit 1 to adjacent batches of pits 1. The spacing mechanism 4 forms a physical barrier between adjacent batches of anti-slide piles, extending the vibration transmission path and attenuating residual energy, reducing disturbance to the high slope. This low-disturbance characteristic of the high slope and the already constructed anti-slide piles reduces the need for excessively long waiting times to stabilize the anti-slide piles, thus shortening the waiting interval and reducing the need to wait for the anti-slide piles to stabilize naturally.

[0037] Furthermore, based on the above, the construction cycle of anti-slide piles can be reduced from the traditional 21 days to 4 days, improving the construction cycle efficiency by more than 80%. This effectively solves the problem of extended construction period caused by excessively long intervals in traditional construction. For mountainous areas that rely on a single road for access, the shortened construction cycle can reduce road closure time, reduce the impact on the travel of surrounding residents and the transportation of construction materials, and at the same time reduce project cost input and safety management difficulty, achieving efficient construction while ensuring the long-term stability of high slopes and construction safety.

[0038] Reference Figure 4 and Figure 5 Specifically, the blasting protection mechanism includes a frame 21, a blasting cover 22, and multiple sandbags 23. Before excavating the foundation pit 1, the frame 21 is first buried in the shallow soil of the high slope. The top of the frame 21 is in the shallow soil of the high slope. The foundation pit 1 is excavated according to the size of the frame 21. The blasting cover 22 covers the frame 21. In this embodiment, the blasting cover 22 is made of woven waste rubber tires. The weave is tight and can make full use of the high elasticity and wear resistance of rubber materials. During the blasting impact, the rubber deformation absorbs a large amount of shock wave energy. At the same time, the mesh gaps formed by the woven structure can disperse the impact force of flying stones and reduce the risk of flying stones penetrating. The recycling of waste rubber tires reduces material costs and meets environmental protection requirements. The blasting cover 22 is provided with a hanging edge 221. In this embodiment, the hanging edge 221 is tied with steel wire so that the blasting cover 22 is box-shaped and the hanging edge 221 abuts against the outer wall of the frame 21.

[0039] Furthermore, multiple sandbags 23 abut against the upper surface of the shell 22. The multiple sandbags 23 are provided with multiple large sandbags 231 and multiple small sandbags 232. The multiple small sandbags 232 are evenly distributed in the middle of the shell 22, and the multiple large sandbags 231 are evenly distributed on the edge of the shell 22. The sandbags 23 are made of ordinary woven bags filled with sand and gravel, which is low in cost and easy to obtain.

[0040] As can be seen from the above, the shell 22 covering the frame 21 intercepts flying stones and buffers the shock wave through rubber material. In order to improve the protective effect, the core area of ​​the blast energy impact is the middle of the shell 22. The small sandbags 232 are more suitable for the size and weight of the middle space. Multiple small sandbags 232 are attached to the surface of the shell 22 to form a uniform coverage. By dispersing the pressure, the direct action of the blast shock wave is buffered, reducing the risk of the middle of the shell 22 being damaged due to excessive local stress.

[0041] Furthermore, the edges of the blasting cover 22 are critical areas where flying rocks can easily escape and the edges of the blasting cover 22 are prone to warping. The large sandbags 231 are heavier and can firmly compress the edges with their weight, enhancing the fit between the blasting cover 22 and the frame 21. This effectively prevents flying rocks from splashing through the edge gaps. Combined with the downward-hanging edge 221 abutting against the outer wall of the frame 21, this significantly improves the sealing and impact resistance of the blasting protection mechanism, providing a more reliable protective barrier to reduce disturbance to high slopes and ensure construction safety.

[0042] Meanwhile, the blast protection mechanism also includes a fixing component 25 and a barrier net 24. The barrier net 24 covers the blasting cover 22 and sandbags 23, and is fixed to the perimeter of the frame 21 by the fixing component 25. The fixing component 25 includes multiple fixing arms 251, positioning reels 252, damping reels 253, and nylon ropes 254. In this embodiment, eight fixing arms 251 are provided, evenly distributed on the outer wall of the frame 21, and one end of the fixing arm 251 is hinged to the outer wall of the frame 21.

[0043] Furthermore, the positioning reel 252 is rotatably supported by the fixed mounting arm 251 at the end near the frame 21, and the damping reel 253 is rotatably supported by the fixed mounting arm 251 at the end away from the frame 21. A nylon rope 254 is wound around the damping reel 253, and the nylon rope 254 passes from the damping reel 253 around the positioning reel 252 and connects to the barrier net 24. Since the eight fixed mounting arms 251 are evenly distributed on the outer wall of the frame 21, the nylon netting is positioned on the gun cover 22 and the sand... The bag 23 and the barrier net 24 are also made of polyester fiber material. Polyester fiber has flexible properties and can buffer the impact energy through stretching deformation when intercepting flying stones, reducing the impact force of flying stones on the shell 22 and sandbag 23. Furthermore, the barrier net 24 forms a constraint on the shell 22 and sandbag 23 by covering them as a whole, reducing displacement, slippage or local bulging under the blasting impact, ensuring the uniform pressure effect of the sandbag 23 on the shell 22 and the full coverage of the shell 22.

[0044] This explains the combination logic of the frame 21, the blasting cover 22, the sandbags 23, and the barrier net 24: the blasting cover 22 covers the frame 21, directly blocking the flying rocks and shock waves generated by the blast; the sandbags 23 are placed on the blasting cover 22, further increasing the weight and buffering performance of the protection; and the barrier net 24 covers the blasting cover 22 and the sandbags 23, buffering the impact energy, reducing the impact force of flying rocks on the blasting cover 22 and the sandbags 23, and reducing the displacement of the blasting cover 22 and the sandbags 23 under the impact of the blast. This combination method can protect against blasting from multiple levels and angles, effectively reducing the impact of blasting on the surrounding environment and other batches of anti-slide piles.

[0045] In addition, in this embodiment, the shock-absorbing filling layer 3 is also made of woven waste rubber tires. Since the shock-absorbing filling layer 3 is filled between the foundation pit well 1 and the blast protection mechanism, it can make full use of the high elasticity and toughness of the rubber material. Through the deformation characteristics of the woven structure, it can absorb the vibration energy generated by the blast. When the blast impact is transmitted to the shock-absorbing filling layer 3, the elastic deformation of the rubber can directly buffer part of the vibration kinetic energy. The porous gaps formed by the weaving can disperse the propagation direction of the vibration wave, so that the energy is gradually attenuated when passing through the shock-absorbing filling layer 3.

[0046] Reference Figure 6 and Figure 7 Furthermore, the spacing mechanism 4 is embedded in the high slope. The spacing mechanism 4 includes multiple first spacing members 41, multiple second spacing members 42, and multiple shock-absorbing layers 44. The first spacing members 41 and the second spacing members 42 are hollow. The shock-absorbing layer 44 is built into the first spacing members 41 and the second spacing members 42. In this embodiment, the shock-absorbing layer 44 is set as a rigid rubber layer. The rigid rubber layer enhances the deformation resistance of the overall structure of the first spacing members 41 and the second spacing members 42. At the same time, with the help of the elastic deformation of the rigid rubber, the residual vibration energy passing through the first spacing members 41 and the second spacing members 42 can be specifically absorbed, further reducing the vibration transmission efficiency between adjacent batches of anti-slide piles.

[0047] Furthermore, a second spacer 42 is located between two inclined first spacers 41. The two first spacers 41 and the second spacer 42 together form an inclined H-shaped structure. The first spacer 41 can specifically separate adjacent batches of anti-slide piles in the same row, such as the first batch and the second batch in the upper row, or the second batch and the third batch in the lower row. The first spacer 41 can effectively block the lateral transmission of vibration between different batches of anti-slide piles in the same row. The second spacer 42 located in the middle can form a longitudinal barrier between corresponding batches of anti-slide piles in the upper and lower rows. For example, the second batch in the upper row and the second batch in the lower row can fill the protective gap between the upper and lower anti-slide piles with the help of the second spacer 42. With the synergistic effect of the first spacer 41 and the second spacer 42, different batches of anti-slide piles form complete energy barrier in both the horizontal and vertical dimensions, further reducing the cross-interference of vibration between different rows and batches of anti-slide piles, minimizing the impact of vibration on the constructed anti-slide piles, ensuring that the anti-slide piles can quickly reach a stable state, and providing more precise and reliable structural support for shortening the construction interval of adjacent batches of anti-slide piles.

[0048] Furthermore, the surfaces of the first spacer 41 and the second spacer 42 are provided with multiple mesh holes 43. The mesh holes 43 can effectively reduce the overall weight of the first spacer 41 and the second spacer 42. While ensuring the bending resistance of the first spacer 41 and the second spacer 42, the operation difficulty during transportation and installation is reduced, and the construction convenience is improved. In addition, when the blasting vibration is transmitted to the first spacer 41 and the second spacer 42, the mesh holes 43 can disperse some of the vibration energy. Together with the built-in shock-absorbing layer 44, the vibration transmission efficiency is further weakened, and the protection effect on slope stability is ultimately enhanced.

[0049] Simultaneously, after the blasting is completed, the rigid rubber layer inside the first spacer 41 and the second spacer 42 is extracted. The mesh 43 provides a penetration channel for the injected concrete, allowing the concrete to fully fill the hollow cavities of the first spacer 41 and the second spacer 42. After the concrete hardens, the first spacer 41 and the second spacer 42 form a fixed pile. By utilizing the original structural form of the first spacer 41 and the second spacer 42, a support frame is constructed that runs through each batch of anti-slide piles. This effectively integrates the dispersed force of the anti-slide piles and transfers the sliding force of the high slope to the deep stable rock mass through the first spacer 41 and the second spacer 42, reducing local stress concentration and improving the long-term anti-slide stability of the high slope. This design realizes the reuse of the spacer mechanism 4 from earthquake protection during the construction period to slope stabilization during the operation period, which simplifies the construction process and further ensures the safety of the high slope through structural reinforcement.

[0050] Furthermore, the lower surfaces of the first spacer 41 and the second spacer 42 are each provided with a pointed tip 45. The pointed tip 45 can reduce the resistance when inserted into the stratum by means of its own structure, and can quickly position the first spacer 41 and the second spacer 42 to the preset position between adjacent batches of anti-slide piles. After the pointed tip 45 penetrates into the stratum, it can also form a stable effect similar to anchoring, which enhances the anti-displacement ability of the first spacer 41 and the second spacer 42 in the blasting vibration environment, reduces the breakage of the vibration isolation path in the same row and the vertical direction of the upper and lower rows due to the displacement of the first spacer 41 and the second spacer 42, and ensures the stability of the cross-interference protection effect of different batches of anti-slide piles in the early stage. At the same time, when concrete is injected into the first spacer 41 and the second spacer 42 to form a fixed pile in the later stage, the pointed tip 45 can extend the embedment depth of the fixed pile, increase the contact area and interlocking strength between the fixed pile and the stratum, and further enhance the long-term stability of the high slope.

[0051] The implementation principle of a foundation pit group construction structure for multi-row anti-slide piles on high slopes of mountain roads in this application embodiment is as follows: The frame 21 is buried in the shallow surface soil of the high slope, and the top of the frame 21 is also in the shallow surface soil of the high slope. First, the shallow surface soil of the high slope is directly excavated mechanically. The upper row area is selected and the foundation pit 1 is excavated according to the size of the frame 21. Adjacent foundation pits 1 are kept at a certain interval. After the excavation of the first set of foundation pits 1 in the upper row is completed, the anti-slide pile concrete is poured. The first row of all anti-slide piles is poured in sequence. The foundation pit 1 is excavated between the adjacent anti-slide piles that have been poured in the upper row, and the remaining upper row of anti-slide pile concrete is poured.

[0052] After all the upper row of anti-slide piles are completed, the foundation pit 1 is excavated to extend to the lower row area, with adjacent piles maintaining a certain interval. The concrete pouring of the first set of anti-slide piles in the lower row is completed. Then, the foundation pit 1 is excavated in the gap between the already poured anti-slide piles in the lower row to complete the concrete pouring of all the lower row of anti-slide piles. For the rock layers involved in the middle and lower parts, shallow hole blasting is used to excavate the high slope rock sections during the excavation of foundation pit 1 in the above stages. A blasting cover 22, made of waste rubber tires, is placed over the frame 21, with the lower edge 221 abutting against the outer wall of the frame 21 to form a box-like shape. Sandbags 23 are placed on the upper surface of the blasting cover 22, with small sandbags 232 evenly distributed in the middle and large sandbags 231 evenly distributed at the edges. A barrier net 24 is placed over the blasting cover 22 and the sandbags 23. The barrier net 24 is fixed to the frame 21 around the perimeter by the fixing component 25, so that the barrier net 24 covers the blasting cover 22 and the sandbags 23. A shock-absorbing filling layer 3, made of waste rubber tires, is filled into the side wall of the foundation pit well 1. An interval mechanism 4 is buried between each batch of anti-slide piles.

[0053] Shallow-hole blasting is used to excavate the lower rock layer of the foundation pit well 1. Simultaneously, the blasting protection mechanism, the shock-absorbing filling layer 3 and the spacer mechanism 4 are used to achieve protection and shock absorption. After blasting, the rigid rubber layer inside the first spacer 41 and the second spacer 42 is extracted. Concrete is filled inside the first spacer 41 and the second spacer 42, so that the first spacer 41 and the second spacer 42 are transformed from temporary earthquake-resistant structures into fixed piles.

[0054] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A foundation pit group construction structure for multi-row anti-slide piles on high slopes of mountain roads, characterized in that, The system includes multiple foundation pits (1) located on high slopes, a blasting protection mechanism, a shock-absorbing filling layer (3), and multiple spacing mechanisms (4). The blasting protection mechanism is installed on the foundation pits (1). The blasting protection mechanism includes a frame (21), a blasting cover (22), multiple sandbags (23), a barrier net (24), and a fixing component (25). The frame (21) is located at the edge of the foundation pit (1). The blasting cover (22) covers the surface of the frame (21). The sandbags (23) are placed on the blasting cover (22). The barrier net (24) is placed on the sandbags (23). The fixing component (25) fixes the blasting cover (22), the sandbags (23), and the barrier net (24) to the frame (21). The shock-absorbing filling layer (3) is installed on the side wall of the foundation pit (1). The multiple spacing mechanisms (4) are respectively installed between adjacent batches of anti-slide piles.

2. The foundation pit group construction structure for multi-row anti-slide piles on high slopes of mountain roads according to claim 1, characterized in that, The spacing mechanism (4) includes a plurality of first spacers (41), a plurality of second spacers (42), and a plurality of shock-absorbing layers (44). The length of the first spacer (41) is greater than that of the second spacer (42). The first spacer (41) and the second spacer (42) are hollow. The shock-absorbing layer (44) is built into the first spacer (41) and the second spacer (42).

3. The foundation pit group construction structure for multi-row anti-slide piles on high slopes of mountain roads according to claim 2, characterized in that, A second spacer (42) is located between two first spacers (41), the two first spacers (41) are inclined, and each pair of first spacers (41) and a second spacer (42) are combined to form an inclined H-shaped structure.

4. The foundation pit group construction structure for multi-row anti-slide piles on high slopes of mountain roads according to claim 2, characterized in that, The surfaces of the first spacer (41) and the second spacer (42) are provided with a plurality of mesh holes (43). After the blasting is completed, the shock-absorbing layer (44) is removed from the first spacer (41) and the second spacer (42), and concrete is injected into the first spacer (41) and the second spacer (42) to form a fixed pile.

5. The foundation pit group construction structure for multi-row anti-slide piles on high slopes of mountain roads according to claim 2, characterized in that, The lower surfaces of the first spacer (41) and the second spacer (42) are provided with pointed tips (45).

6. The foundation pit group construction structure for multi-row anti-slide piles on high slopes of mountain roads according to claim 1, characterized in that, The multiple sandbags (23) are provided with multiple large sandbags (231) and multiple small sandbags (232). The small sandbags (232) are located in the middle of the shell (22), and the large sandbags (231) are located at the edge of the shell (22).

7. The foundation pit group construction structure for multi-row anti-slide piles on high slopes of mountain roads according to claim 1, characterized in that, The gun cover (22) is provided with a drooping edge (221), which abuts against the outer wall of the frame (21).

8. The foundation pit group construction structure for multi-row anti-slide piles on high slopes of mountain roads according to claim 1, characterized in that, The fixing component (25) includes multiple fixing mounting arms (251), positioning reels (252), damping reels (253), and nylon ropes (254). The positioning reels (252) and the damping reels (253) are rotatably supported by the fixing mounting arms (251), and the nylon ropes (254) are wound around the positioning reels (252) and the damping reels (253) and connected to the barrier net (24).

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