Landslide treatment structure and method based on anti-slide keys and anti-slide piles

Abstract

The landslide treatment structure comprises a road surface, a landslide structure is arranged on one side of the road surface, the landslide structure comprises a slope body, the slope body is located on one side of the road surface, the slide-resistant keys are arranged in the slope body, the slide-resistant piles are inserted into the slope body, anchor cable structures are arranged on the slide-resistant piles, and a drainage gallery is arranged in the slope body. The invention further discloses a landslide treatment method based on the anti-slide keys and the anti-slide piles. According to the landslide control structure and method based on the anti-slide keys and the anti-slide piles, the problem that in existing landslide control, water level rising under the complex hydrogeological condition is difficult to deal with only depending on drainage measures is solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of landslide control, and specifically relates to a landslide control structure based on anti-slide keys and anti-slide piles, and also relates to a landslide control method based on anti-slide keys and anti-slide piles. Background Art

[0002] Landslide control is a systematic protection measure implemented for landslide disasters. By comprehensively applying engineering and non-engineering means, the slope body is stabilized to prevent the sliding of soil or rock masses to ensure safety. The core lies in first analyzing the causes of landslides such as terrain, geological structure, precipitation, and human activities, and then formulating solutions accordingly. In engineering, anti-slide piles, retaining walls and other retaining structures are often used to block the sliding body, drainage systems such as intercepting ditches and blind ditches are used to reduce the infiltration of rainwater, slope cutting and load reduction and slope toe backfilling are used to balance the stress of the slope body, and at the same time, measures such as tree planting, grass sowing, and stone masonry slope protection are used to protect the slope surface. In the non-engineering aspect, it is assisted by monitoring and early warning, restricting slope loading, demarcating dangerous areas, etc. The whole process needs to combine geological exploration data to build a control system of "interception and drainage combination, stable retaining, and ecological protection", taking into account ecological protection and engineering economy while eliminating potential disaster hazards.

[0003] In existing landslide control, single control measures have limitations. Relying solely on drainage measures is difficult to cope with the rising water level under complex hydrogeological conditions. Simply using anti-slide piles cannot meet the control requirements in dealing with deep landslides. Coupled with the runoff paths of groundwater and surface water, the landslide deformation is further aggravated. Therefore, we propose a landslide control structure and method based on anti-slide keys and anti-slide piles. Summary of the Invention

[0004] The purpose of the present invention is to provide a landslide control structure based on anti-slide keys and anti-slide piles, which solves the problem that in existing landslide control, relying solely on drainage measures is difficult to cope with the rising water level under complex hydrogeological conditions.

[0005] Another purpose of the present invention is to provide a landslide control method based on anti-slide keys and anti-slide piles.

[0006] The technical solution adopted by the present invention is that the landslide control structure based on anti-slide keys and anti-slide piles includes a road surface. There is a landslide structure on one side of the road surface. The landslide structure includes a slope body. The slope body is located on one side of the road surface. An anti-slide key is arranged inside the slope body. Anti-slide piles are inserted into the slope body. Anchor cable structures are arranged on the anti-slide piles. A drainage corridor is arranged inside the slope body.

[0007] The characteristics of the present invention also lie in: The slope body includes moderately weathered sandy mudstone layers, which are located on one side of the road surface. Above the moderately weathered sandy mudstone layers, strongly weathered sandy mudstone layers are laid. Above the strongly weathered sandy mudstone layers, a block stone layer is laid. Above the block stone layer, a clay layer containing gravel is laid. Above the clay layer containing gravel, a silty clay layer is laid. Above the silty clay layer, a loess-like soil layer is laid. Above the loess-like soil layer, a plain fill layer is laid.

[0008] The anti-sliding key includes micro steel pipe piles, which are inserted into the slope body. The surface of the micro steel pipe piles is provided with inter-pile grouting holes.

[0009] The cable anchor structure includes steel strands, which penetrate through the anti-sliding piles. One end of the steel strands is fixedly connected with a guiding cap, and the other end of the steel strands far away from the guiding cap is fixedly connected with a concrete sealing anchor head. A first steel backing plate is sleeved on the concrete sealing anchor head, and a second steel backing plate is sleeved on the concrete sealing anchor head. A steel mesh is installed on one side of the anti-sliding pile close to the concrete sealing anchor head. The concrete sealing anchor head, the first steel backing plate and the second steel backing plate are all located inside the steel mesh.

[0010] The drainage gallery includes a gallery body, which is in an arched structure. The gallery body is arranged inside the slope body. A number of water collecting pipes are installed on the upper surface of the gallery body, and a number of advanced grouting guide holes are arranged above the gallery body.

[0011] A number of drainage holes are arranged on both sides of the gallery body, and the number of drainage holes are all vertically arranged with respect to the number of advanced grouting guide holes.

[0012] Another technical solution adopted by the present invention is a landslide treatment method based on anti-sliding keys and anti-sliding piles, which specifically includes the following steps: S1. Investigate the slope body, obtain slope body investigation data, and design the layout scheme of anti-sliding keys and anti-sliding piles; S2. According to the layout scheme, excavate a groove at the sliding surface of the slope body, and arrange anti-sliding keys in the groove; S3. Arrange anti-sliding piles in the middle reaches of the sliding surface of the slope body; S4. Set up drainage galleries, catch wells and infiltration wells around and inside the slope body; S5. Arrange monitoring facilities such as surface displacement monitoring points, deep displacement monitoring holes and groundwater level monitoring points on the slope body to monitor the deformation of the slope body and the change of groundwater in real time.

[0013] The characteristics of another technical solution adopted by the present invention also lie in: The specific process of S1 is as follows: Investigate the slope body, obtain the geological structure, sliding surface position and groundwater distribution data of the slope body, and design the layout scheme of anti-sliding keys and anti-sliding piles according to the investigation data, including the length, width, depth of the anti-sliding keys and the pile diameter, pile length, spacing parameters of the anti-sliding piles.

[0014] The specific process of S2 is as follows: According to the exploration data, design the layout scheme of anti-sliding keys and anti-sliding piles. At the sliding surface of the slope body, use mechanical or manual methods to excavate a groove, and pour concrete or install prefabricated anti-sliding key components in the groove to make the anti-sliding key in close contact with the sliding surface, forming a key-shaped structure to prevent the slope body from sliding.

[0015] The specific process of S3 is as follows: At the midstream position of the sliding surface of the slope body, use a drilling machine to form a hole for the anti-sliding pile. The hole depth penetrates the sliding surface and enters the stable stratum. Place a steel reinforcement cage in the hole and pour concrete to form the anti-sliding pile.

[0016] The beneficial effects of the present invention are: The landslide control structure and method based on anti-sliding keys and anti-sliding piles provided by the present invention. The anti-sliding key is composed of micro steel pipe piles and inter-pile grouting holes, and is arranged at the rear edge of the landslide, which can weaken the landslide sliding force and improve the strength of the sliding zone. Through triangular arrangement and grouting technology, the overall anti-sliding ability is enhanced, providing strong support for the rear edge of the landslide; the anchor cable structure cooperates with the anti-sliding pile and is arranged on the upper part of the rectangular anti-sliding pile. By tensioning and locking, additional tension is provided for the anti-sliding pile, enhancing the anti-sliding effect of the anti-sliding pile, further improving the stability after landslide control, and the monitoring during the tensioning process ensures the construction safety and effect; the drainage corridor can effectively drain the groundwater in the landslide body. It is arranged on the south side of the retaining pile in the upper site of the coal preparation plant, which can intercept and drain the two-layer water levels in the landslide body, lower the groundwater level, reduce the influence of water on the strength of the soil body on the sliding surface, and improve the landslide stability; the anti-sliding pile can provide sufficient anti-sliding force. The rectangular anti-sliding pile is arranged in the middle of the landslide, which can effectively block the sliding of the landslide body. The circular anti-sliding pile is arranged at the rear edge of the landslide and is completely buried above and below the sliding surface, increasing the safety reserve and forming a multi-level retaining landslide. Description of the Drawings

[0017] Figure 1 is a schematic structural diagram of the landslide control structure based on anti-sliding keys and anti-sliding piles of the present invention; Figure 2 is a schematic structural diagram of the anti-sliding key of the landslide control structure based on anti-sliding keys and anti-sliding piles of the present invention; Figure 3 is a schematic structural diagram of the anchor cable structure of the landslide control structure based on anti-sliding keys and anti-sliding piles of the present invention; Figure 4 is a schematic structural diagram of the drainage corridor of the landslide control structure based on anti-sliding keys and anti-sliding piles of the present invention.

[0018] In the figure, 1. landslide structure; 11. slope body; 111. plain fill layer; 112. loess-like soil layer; 113. silty clay layer; 114. clay layer containing gravel; 115. boulder layer; 116. strongly weathered sandy mudstone layer; 117. moderately weathered sandy mudstone layer; 12. anti-slide key; 121. micro steel pipe pile; 122. inter-pile grouting hole; 13. anti-slide pile; 14. anchor cable structure; 141. concrete sealing anchor head; 142. steel wire mesh; 143. first steel backing plate; 144. second steel backing plate; 145. steel strand; 146. guide cap; 15. drainage gallery; 151. gallery body; 152. advanced grouting guide hole; 153. drainage hole; 154. collecting pipe; 2. road surface. Detailed implementation mode

[0019] The present invention will be described in detail below in conjunction with the accompanying drawings and the detailed implementation mode.

[0020] The landslide treatment structure based on the anti-slide key and the anti-slide pile provided by the present invention, as Figure 1 shown, includes a road surface 2. On one side of the road surface 2, there is a landslide structure 1. The landslide structure 1 includes a slope body 11. The slope body 11 is located on one side of the road surface 2. Inside the slope body 11, there is an anti-slide key 12. An anti-slide pile 13 is inserted into the slope body 11. An anchor cable structure 14 is provided on the anti-slide pile 13. Inside the slope body 11, there is a drainage gallery 15. The anti-slide key 12 is composed of a micro steel pipe pile 121 and an inter-pile grouting hole 122, and is arranged at the rear edge of the landslide, which can weaken the landslide sliding force and improve the strength of the sliding zone. Through triangular arrangement and grouting technology, the overall anti-slide ability is enhanced, providing strong support for the rear edge of the landslide; the slope body 11 includes a moderately weathered sandy mudstone layer 117. The moderately weathered sandy mudstone layer 117 is located on one side of the road surface 2. Above the moderately weathered sandy mudstone layer 117, there is a strongly weathered sandy mudstone layer 116. Above the strongly weathered sandy mudstone layer 116, there is a boulder layer 115. Above the boulder layer 115, there is a clay layer containing gravel 114. Above the clay layer containing gravel 114, there is a silty clay layer 113. Above the silty clay layer 113, there is a loess-like soil layer 112. Above the loess-like soil layer 112, there is a plain fill layer 111. As Figure 2 shown, the anti-slide key 12 includes a micro steel pipe pile 121. The micro steel pipe pile 121 is inserted into the interior of the slope body 11. The surface of the micro steel pipe pile 121 is provided with an inter-pile grouting hole 122. After the inter-pile grouting hole 122 is injected with cement slurry, it can fill the gaps in the sliding zone rock and soil, improve the mechanical properties of the sliding zone soil, enhance its shear strength, enhance the overall anti-slide ability, provide strong support for the rear edge of the landslide, and inhibit the deformation and development of the rear edge sliding mass. As Figure 3As shown in the figure, the cable anchor structure 14 includes a steel strand 145. The steel strand 145 penetrates through the anti-slide pile 13. One end of the steel strand 145 is fixedly connected with a guide cap 146, and the end of the steel strand 145 away from the guide cap 146 is fixedly connected with a concrete anchor head 141. The cable anchor structure 14 cooperates with the anti-slide pile 13 and is arranged on the upper part of the rectangular anti-slide pile 13. By tensioning and locking, it provides additional tension for the anti-slide pile 13, enhances the anti-slide effect of the anti-slide pile 13, and further improves the stability after landslide treatment. Moreover, the monitoring during the tensioning process ensures the construction safety and effect. A first steel backing plate 143 is sleeved on the concrete anchor head 141, and a second steel backing plate 144 is sleeved on the concrete anchor head 141, effectively providing stable support for the concrete anchor head 141. A steel mesh 142 is installed on the side of the anti-slide pile 13 close to the concrete anchor head 141. The anti-slide pile 13 can provide sufficient anti-slide force. The rectangular anti-slide pile 13 is arranged in the middle of the landslide, which can effectively block the sliding of the slope body 11. The circular anti-slide pile 13 is arranged at the trailing edge of the landslide and is completely buried above and below the sliding surface, increasing the safety reserve and forming a multi-level retaining landslide. The concrete anchor head 141, the first steel backing plate 143, and the second steel backing plate 144 are all located inside the steel mesh 142. The steel mesh 142 effectively protects the concrete anchor head 141, the first steel backing plate 143, and the second steel backing plate 144, and improves the service life of the concrete anchor head 141, the first steel backing plate 143, and the second steel backing plate 144. As Figure 4 As shown in the figure, the drainage gallery 15 includes a gallery body 151. The gallery body 151 is in an arched structure. The gallery body 151 is arranged inside the slope body 11. A plurality of water collecting pipes 154 are installed on the upper surface of the gallery body 151. A plurality of advanced grouting guide holes 152 are arranged above the gallery body 151. The drainage gallery 15 can effectively drain the groundwater in the landslide body. It is arranged on the south side of the retaining pile in the upper site of the coal preparation plant, can intercept and drain the two-layer water level in the landslide body, lower the groundwater level, reduce the influence of water on the strength of the soil body on the sliding surface, and improve the landslide stability. A plurality of drain holes 153 are arranged on both sides of the gallery body 151. The plurality of drain holes 153 are all vertically arranged with the plurality of advanced grouting guide holes 152. Through the cooperation of the gallery body 151, the water collecting pipes 154, and the drain holes 153, the groundwater is collected and drained outside the landslide range, the groundwater level is lowered, the softening effect of water on the soil body of the sliding surface is reduced, the strength of the soil body on the sliding surface is restored and maintained, and the adverse influence of groundwater on the landslide stability is fundamentally reduced, improving the overall stability of the landslide.

[0021] Embodiment 1 The landslide treatment structure based on anti-slide keys and anti-slide piles proposed in this embodiment, as Figure 1 shown in the figure, includes a road surface 2. One side of the road surface 2 is provided with a landslide structure 1. The landslide structure 1 includes a slope body 11. The slope body 11 is located on one side of the road surface 2. An anti-slide key 12 is arranged inside the slope body 11. An anti-slide pile 13 is inserted into the slope body 11. A cable anchor structure 14 is arranged on the anti-slide pile 13. A drainage gallery 15 is arranged inside the slope body 11.

[0022] Example 2 The landslide control structure based on anti-sliding keys and anti-sliding piles proposed in this example is as follows Figure 1 shown in the figure, including a road surface 2. On one side of the road surface 2, there is a landslide structure 1. The landslide structure 1 includes a slope body 11. The slope body 11 is located on one side of the road surface 2. Inside the slope body 11, there is an anti-sliding key 12. An anti-sliding pile 13 is inserted into the slope body 11. An anchor cable structure 14 is provided on the anti-sliding pile 13. A drainage corridor 15 is provided inside the slope body 11; the slope body 11 includes a moderately weathered sandy mudstone layer 117. The moderately weathered sandy mudstone layer 117 is located on one side of the road surface 2. Above the moderately weathered sandy mudstone layer 117, there is a strongly weathered sandy mudstone layer 116. Above the strongly weathered sandy mudstone layer 116, there is a block stone layer 115. Above the block stone layer 115, there is a clay layer containing gravel 114. Above the clay layer containing gravel 114, there is a silty clay layer 113. Above the silty clay layer 113, there is a loess-like soil layer 112. Above the loess-like soil layer 112, there is a plain fill layer 111.

[0023] Example 3 The landslide control structure based on anti-sliding keys and anti-sliding piles proposed in this example is as follows Figure 1 shown in the figure, including a road surface 2. On one side of the road surface 2, there is a landslide structure 1. The landslide structure 1 includes a slope body 11. The slope body 11 is located on one side of the road surface 2. Inside the slope body 11, there is an anti-sliding key 12. An anti-sliding pile 13 is inserted into the slope body 11. An anchor cable structure 14 is provided on the anti-sliding pile 13. A drainage corridor 15 is provided inside the slope body 11; the slope body 11 includes a moderately weathered sandy mudstone layer 117. The moderately weathered sandy mudstone layer 117 is located on one side of the road surface 2. Above the moderately weathered sandy mudstone layer 117, there is a strongly weathered sandy mudstone layer 116. Above the strongly weathered sandy mudstone layer 116, there is a block stone layer 115. Above the block stone layer 115, there is a clay layer containing gravel 114. Above the clay layer containing gravel 114, there is a silty clay layer 113. Above the silty clay layer 113, there is a loess-like soil layer 112. Above the loess-like soil layer 112, there is a plain fill layer 111. As shown Figure 2 shown in the figure, the anti-sliding key 12 includes a micro steel pipe pile 121. The micro steel pipe pile 121 is inserted into the inside of the slope body 11. The surface of the micro steel pipe pile 121 is provided with inter-pile grouting holes 122.

[0024] Example 4 The landslide control structure based on anti-sliding keys and anti-sliding piles proposed in this example is as follows Figure 1As shown in the figure, it includes a road surface 2, and a landslide structure 1 is provided on one side of the road surface 2. The landslide structure 1 includes a slope body 11. The slope body 11 is located on one side of the road surface 2. An anti-sliding key 12 is provided inside the slope body 11. Anti-sliding piles 13 are inserted into the slope body 11. A cable structure 14 is provided on the anti-sliding piles 13. A drainage gallery 15 is provided inside the slope body 11; the slope body 11 includes a moderately weathered sandy mudstone layer 117. The moderately weathered sandy mudstone layer 117 is located on one side of the road surface 2. A strongly weathered sandy mudstone layer 116 is laid above the moderately weathered sandy mudstone layer 117. A block stone layer 115 is laid above the strongly weathered sandy mudstone layer 116. A clay layer containing gravel 114 is laid above the block stone layer 115. A silty clay layer 113 is laid above the clay layer containing gravel 114. A loess-like soil layer 112 is laid above the silty clay layer 113. A plain fill layer 111 is laid above the loess-like soil layer 112. As Figure 2 shown, the anti-sliding key 12 includes a micro steel pipe pile 121. The micro steel pipe pile 121 is inserted into the interior of the slope body 11. The surface of the micro steel pipe pile 121 is provided with inter-pile grouting holes 122. As Figure 3 shown, the cable structure 14 includes a steel strand 145. The steel strand 145 penetrates through the anti-sliding pile 13. One end of the steel strand 145 is fixedly connected with a guide cap 146. The end of the steel strand 145 away from the guide cap 146 is fixedly connected with a concrete sealed anchor head 141. A first steel backing plate 143 is sleeved on the concrete sealed anchor head 141. A second steel backing plate 144 is sleeved on the concrete sealed anchor head 141. A steel mesh 142 is installed on the side of the anti-sliding pile 13 close to the concrete sealed anchor head 141. The concrete sealed anchor head 141, the first steel backing plate 143 and the second steel backing plate 144 are all located inside the steel mesh 142.

[0025] Example 5 The landslide treatment structure based on anti-sliding keys and anti-sliding piles proposed in this embodiment, as Figure 1 shown, includes a road surface 2, and a landslide structure 1 is provided on one side of the road surface 2. The landslide structure 1 includes a slope body 11. The slope body 11 is located on one side of the road surface 2. An anti-sliding key 12 is provided inside the slope body 11. Anti-sliding piles 13 are inserted into the slope body 11. A cable structure 14 is provided on the anti-sliding piles 13. A drainage gallery 15 is provided inside the slope body 11; the slope body 11 includes a moderately weathered sandy mudstone layer 117. The moderately weathered sandy mudstone layer 117 is located on one side of the road surface 2. A strongly weathered sandy mudstone layer 116 is laid above the moderately weathered sandy mudstone layer 117. A block stone layer 115 is laid above the strongly weathered sandy mudstone layer 116. A clay layer containing gravel 114 is laid above the block stone layer 115. A silty clay layer 113 is laid above the clay layer containing gravel 114. A loess-like soil layer 112 is laid above the silty clay layer 113. A plain fill layer 111 is laid above the loess-like soil layer 112. As Figure 2As shown in the figure, the anti-sliding key 12 includes a micro steel pipe pile 121. The micro steel pipe pile 121 is inserted into the interior of the slope body 11, and the surface of the micro steel pipe pile 121 is provided with inter-pile grouting holes 122. As Figure 3 As shown in the figure, the cable anchor structure 14 includes a steel strand 145. The steel strand 145 penetrates through the anti-sliding pile 13. One end of the steel strand 145 is fixedly connected with a guide cap 146, and the other end of the steel strand 145 away from the guide cap 146 is fixedly connected with a concrete sealing anchor head 141. A first steel backing plate 143 is sleeved on the concrete sealing anchor head 141, and a second steel backing plate 144 is sleeved on the concrete sealing anchor head 141. A steel bar mesh 142 is installed on one side of the anti-sliding pile 13 close to the concrete sealing anchor head 141. The concrete sealing anchor head 141, the first steel backing plate 143 and the second steel backing plate 144 are all located inside the steel bar mesh 142. As Figure 4 As shown in the figure, the drainage gallery 15 includes a gallery body 151. The gallery body 151 is in an arched structure. The gallery body 151 is arranged inside the slope body 11. A plurality of water collecting pipes 154 are installed on the upper surface of the gallery body 151, and a plurality of advanced grouting guide holes 152 are arranged above the gallery body 151.

[0026] Example 6 The landslide control structure based on the anti-sliding key and the anti-sliding pile proposed in this embodiment, as Figure 1 As shown in the figure, it includes a road surface 2. There is a landslide structure 1 on one side of the road surface 2. The landslide structure 1 includes a slope body 11. The slope body 11 is located on one side of the road surface 2. An anti-sliding key 12 is arranged inside the slope body 11. An anti-sliding pile 13 is inserted into the slope body 11. A cable anchor structure 14 is arranged on the anti-sliding pile 13. A drainage gallery 15 is arranged inside the slope body 11; the slope body 11 includes a medium-weathered sandy mudstone layer 117. The medium-weathered sandy mudstone layer 117 is located on one side of the road surface 2. A strongly weathered sandy mudstone layer 116 is laid above the medium-weathered sandy mudstone layer 117. A block stone layer 115 is laid above the strongly weathered sandy mudstone layer 116. A gravel-containing clay layer 114 is laid above the block stone layer 115. A silty clay layer 113 is laid above the gravel-containing clay layer 114. A loess-like soil layer 112 is laid above the silty clay layer 113. A plain fill layer 111 is laid above the loess-like soil layer 112. As Figure 2 As shown in the figure, the anti-sliding key 12 includes a micro steel pipe pile 121. The micro steel pipe pile 121 is inserted into the interior of the slope body 11, and the surface of the micro steel pipe pile 121 is provided with inter-pile grouting holes 122. As Figure 3As shown in the figure, the cable anchor structure 14 includes a steel strand 145. The steel strand 145 penetrates through the anti-slide pile 13. One end of the steel strand 145 is fixedly connected with a guide cap 146, and the other end of the steel strand 145 away from the guide cap 146 is fixedly connected with a concrete sealing anchor head 141. A first steel backing plate 143 is sleeved on the concrete sealing anchor head 141, and a second steel backing plate 144 is sleeved on the concrete sealing anchor head 141. A steel bar mesh 142 is installed on one side of the anti-slide pile 13 close to the concrete sealing anchor head 141. The concrete sealing anchor head 141, the first steel backing plate 143 and the second steel backing plate 144 are all located inside the steel bar mesh 142. As Figure 4 shown in the figure, the drainage gallery 15 includes a gallery body 151. The gallery body 151 is in an arched structure. The gallery body 151 is arranged inside the slope body 11. A plurality of water collecting pipes 154 are installed on the upper surface of the gallery body 151. A plurality of advanced grouting guide holes 152 are arranged above the gallery body 151; a plurality of drainage holes 153 are arranged on both sides of the gallery body 151, and the plurality of drainage holes 153 are all vertically arranged with respect to the plurality of advanced grouting guide holes 152.

[0027] Embodiment 7 The landslide treatment method based on anti-slide keys and anti-slide piles proposed in this embodiment, according to the above-mentioned landslide treatment structure based on anti-slide keys and anti-slide piles, specifically includes the following steps: S1. Survey the slope body, obtain slope body survey data, and design the layout scheme of anti-slide keys and anti-slide piles; S2. According to the layout scheme, excavate a groove at the sliding surface of the slope body, and arrange anti-slide keys in the groove; S3. Arrange anti-slide piles in the middle reaches of the sliding surface of the slope body; S4. Set up drainage galleries, catch wells and infiltration wells around and inside the slope body; S5. Arrange monitoring facilities such as surface displacement monitoring points, deep displacement monitoring holes and groundwater level monitoring points on the slope body, and monitor the deformation of the slope body and the change of groundwater in real time.

[0028] Embodiment 8 The landslide treatment method based on anti-slide keys and anti-slide piles proposed in this embodiment, according to the above-mentioned landslide treatment structure based on anti-slide keys and anti-slide piles, specifically includes the following steps: S1. Survey the slope body, obtain slope body survey data, and design the layout scheme of anti-slide keys and anti-slide piles; The specific process is as follows: Survey the slope body to obtain the geological structure, sliding surface position and groundwater distribution data of the slope body. According to the survey data, design the layout scheme of anti-slide keys and anti-slide piles, including the length, width, depth of the anti-slide keys and the pile diameter, pile length, spacing parameters of the anti-slide piles; S2. According to the layout scheme, excavate a groove at the sliding surface of the slope body, and arrange anti-slide keys in the groove; The specific process is as follows: Design the layout plan of anti-slide keys and anti-slide piles according to the exploration data. At the sliding surface of the slope body, excavate the groove by mechanical or manual means. Pour concrete or install prefabricated anti-slide key components in the groove to make the anti-slide keys in close contact with the sliding surface, forming a key-shaped structure to prevent the slope body from sliding. S3. Arrange anti-slide piles in the middle reaches of the sliding surface of the slope body. The specific process is as follows: At the middle reaches of the sliding surface of the slope body, use drilling machinery to form holes for anti-slide piles. The hole depth penetrates the sliding surface and enters the stable stratum. Place steel reinforcement cages in the holes and pour concrete to form anti-slide piles. S4. Set up drainage corridors, catch wells and infiltration wells around and inside the slope body. S5. Arrange monitoring facilities such as surface displacement monitoring points, deep displacement monitoring holes and groundwater level monitoring points on the slope body to monitor the deformation of the slope body and the change of groundwater in real time.

Claims

1. Landslide control structure based on anti-sliding keys and anti-sliding piles, characterized in that, It includes a road surface (2), and a landslide structure (1) is provided on one side of the road surface (2). The landslide structure (1) includes a slope body (11). The slope body (11) is located on one side of the road surface (2). An anti-sliding key (12) is provided inside the slope body (11). An anti-sliding pile (13) is inserted into the slope body (11). A cable structure (14) is provided on the anti-sliding pile (13). A drainage gallery (15) is provided inside the slope body (11).

2. The landslide control structure based on anti-sliding keys and anti-sliding piles according to claim 1, wherein, The slope body (11) includes a moderately weathered sandy mudstone layer (117). The moderately weathered sandy mudstone layer (117) is located on one side of the road surface (2). A strongly weathered sandy mudstone layer (116) is laid above the moderately weathered sandy mudstone layer (117). A block stone layer (115) is laid above the strongly weathered sandy mudstone layer (116). A clay layer containing gravel (114) is laid above the block stone layer (115). A silty clay layer (113) is laid above the clay layer containing gravel (114). A loess-like soil layer (112) is laid above the silty clay layer (113). A plain fill layer (111) is laid above the loess-like soil layer (112).

3. The landslide control structure based on anti-sliding keys and anti-sliding piles according to claim 2, characterized in that, The anti-sliding key (12) includes a micro steel pipe pile (121). The micro steel pipe pile (121) is inserted into the interior of the slope body (11). Grouting holes between piles (122) are provided on the surface of the micro steel pipe pile (121).

4. The landslide treatment structure based on anti-sliding keys and anti-sliding piles according to claim 3, characterized in that, The cable structure (14) includes a steel strand (145). The steel strand (145) penetrates through the anti-sliding pile (13). A guide cap (146) is fixedly connected to one end of the steel strand (145). A concrete sealed anchor head (141) is fixedly connected to the end of the steel strand (145) away from the guide cap (146). A first steel backing plate (143) is sleeved on the concrete sealed anchor head (141). A second steel backing plate (144) is sleeved on the concrete sealed anchor head (141). A steel bar mesh (142) is installed on the side of the anti-sliding pile (13) close to the concrete sealed anchor head (141). The concrete sealed anchor head (141), the first steel backing plate (143), and the second steel backing plate (144) are all located inside the steel bar mesh (142).

5. The landslide control structure based on anti-sliding keys and anti-sliding piles according to claim 4, characterized in that, The drainage gallery (15) includes a gallery body (151). The gallery body (151) has an arched structure. The gallery body (151) is provided inside the slope body (11). A number of water collecting pipes (154) are installed on the upper surface of the gallery body (151). A number of advanced grouting guide holes (152) are provided above the gallery body (151).

6. The landslide treatment structure based on anti-sliding keys and anti-sliding piles according to claim 5, characterized in that, A number of drain holes (153) are provided on both sides of the gallery body (151). The number of drain holes (153) is vertically arranged with respect to the number of advanced grouting guide holes (152).

7. Landslide treatment method based on anti-sliding keys and anti-sliding piles, characterized in that, The landslide treatment structure based on the anti-sliding key and the anti-sliding pile according to claim 6 specifically includes the following steps: S1. Investigate the slope body, obtain slope body investigation data, and design the layout scheme of the anti-sliding key and the anti-sliding pile; S2. According to the layout scheme, excavate a groove at the sliding surface of the slope body and arrange the anti-sliding key in the groove; S3. Arrange anti-slide piles in the middle reaches of the landslide surface of the slope body; S4. Set up drainage corridors, catch wells and infiltration wells around and inside the slope body; S5. Arrange monitoring facilities such as surface displacement monitoring points, deep displacement monitoring holes and groundwater level monitoring points on the slope body to monitor the deformation of the slope body and the change of groundwater in real time.

8. The landslide treatment method based on anti-sliding keys and anti-sliding piles according to claim 7, characterized in that, The specific process of S1 is as follows: conduct an investigation on the slope body to obtain the geological structure, landslide surface position and groundwater distribution data of the slope body, and design the layout scheme of anti-slide keys and anti-slide piles according to the investigation data, including the length, width, depth of the anti-slide keys and the pile diameter, pile length, spacing parameters of the anti-slide piles.

9. The landslide treatment method based on anti-sliding keys and anti-sliding piles according to claim 7, characterized in that, The specific process of S2 is as follows: design the layout scheme of anti-slide keys and anti-slide piles according to the investigation data. At the landslide surface of the slope body, excavate a groove by mechanical or manual means, pour concrete or install prefabricated anti-slide key components in the groove to make the anti-slide key in close contact with the landslide surface, forming a key-shaped structure to prevent the slope body from sliding.

10. The landslide treatment method based on anti-sliding keys and anti-sliding piles according to claim 7, characterized in that, The specific process of S3 is as follows: at the middle reaches position of the landslide surface of the slope body, use a drilling machine to form a hole for the anti-slide pile. The hole-forming depth penetrates the landslide surface and enters the stable stratum. Place a steel reinforcement cage in the hole and pour concrete to form an anti-slide pile.

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