Construction methods for comprehensive management of geological disasters

Abstract

The invention relates to the field of geological disaster management and control, and in particular to a construction method for comprehensive geological disaster management, including a construction access road: constructing a construction access road to meet the needs of transportation and personnel passage during the construction process; a temporary drainage project: discharging on-site accumulated water by means of a water pump, manual operation and the like; a main project: excavating the main project for management after the access road is built and the accumulated water is discharged; detection: the detection includes pre-buried detection tubes and ultrasonic detection, the detection tubes are used to detect the construction quality, and the ultrasonic detection is used to detect the concrete pouring quality; acceptance: the construction project is accepted according to acceptance specifications; the main project includes anti-sliding piles, retaining walls and intercepting and draining, the anti-sliding piles are used to support the sliding force of the sliding body; the retaining walls are used to prevent the roadbed slope or base from sliding to ensure the stability of the roadbed; the intercepting and draining is used to intercept groundwater or rainfall water to reduce interference with the construction, and a drainage device is provided in the anti-sliding piles to discharge the accumulated water in the anti-sliding piles.

Description

Technical Field

[0001] The present invention relates to the field of geological disaster management and control, and in particular to a construction method for comprehensive geological disaster management and control. Background Art

[0002] Geological disasters refer to geological events caused by natural factors or human activities that pose a threat or loss to people's lives and property. Landslides are a relatively common type of disaster, and landslides are very likely to occur in mountains after rainfall. Landslides seriously threaten roads and residents at the bottom of the slope. Summary of the invention

[0003] In order to overcome the deficiencies of the prior art, one of the purposes of the present invention is to provide a construction method for comprehensive management of geological disasters to solve the problem that landslides are very likely to occur in mountains after rainfall.

[0004] To achieve the above-mentioned purpose, the present invention provides a construction method for comprehensive management of geological disasters, including construction access roads: building construction access roads to meet the transportation and personnel passage during the construction process; temporary drainage projects: draining the on-site accumulated water through water pumps, manual operations, etc.; main project: after building the access roads and draining the accumulated water, the main project of excavation and management is carried out; detection: the detection includes pre-buried detection tubes and ultrasonic detection, the detection tubes are used to detect the construction quality, and ultrasonic detection is used to detect the quality of concrete pouring; acceptance: the construction project is accepted according to the acceptance specifications; the main project includes anti-slip piles, retaining walls and interception and drainage, the anti-slip piles are used to support the sliding force of the sliding body; the retaining walls are used to prevent the roadbed slope or base from sliding to ensure the stability of the roadbed; the interception and drainage are used to intercept groundwater or rainfall water to reduce interference with construction, and the anti-slip piles are provided with drainage devices to discharge the water accumulated in the anti-slip piles.

[0005] Compared with the prior art, the beneficial effects of the present invention are: the main project includes anti-slip piles, retaining walls and interception and drainage, wherein the anti-slip piles and retaining walls are used to prevent landslides, and the interception and drainage are used to discharge sewage and reduce the pressure on the retaining walls. Compared with traditional landslide control, the discharge of sewage is enhanced. The main cause of landslides is usually severe rainstorms, which scour the hillsides to form landslides. At this time, the retaining walls and anti-slip piles not only have to withstand the impact of the landslide, but also have to block rainwater, which is under great pressure. The interception and drainage effectively guide the discharge of rainwater, reduce the pressure on the retaining walls, and enhance the ability to resist landslides.

[0006] As a preferred embodiment of the present invention, the anti-sliding pile construction steps are as follows: construction preparation: prepare materials according to engineering requirements, and build a warehouse for steel bars; line setting and verification: used to locate the anti-sliding pile position; manual hole digging: manual excavation of foundation pits and retaining walls; pile hole geological cataloging: cataloging the on-site conditions of geology, hydrology, etc. during the drilling process, and finally compiling a borehole core column chart; test slot: used to check whether the geological data is consistent with the expected data, and whether the conclusions and suggestions of the survey results report are correct and feasible; steel cage binding: clean up the sediment at the bottom of the pile hole, and check whether it is suitable After the grid is formed, a steel cage is put in. The steel cage can be mechanically hoisted and positioned in the pile hole, and the drainage device is tied to the steel cage and put in together; concrete pouring: concrete is poured after the steel cage is placed to form an anti-slip pile; maintenance: the poured anti-slip pile is covered with sacks and straw mats and poured with clean water for maintenance, and the maintenance period is more than 7 days; retaining wall construction: the retaining wall construction is carried out after the concrete strength of the pile body reaches 75% of the design strength, wherein the manual digging adopts a jumping method, with 1 to 2 holes at a time; concrete is used to make wall support for the soil layer section, and a lock is set at the hole mouth.

[0007] Beneficial effects: Anti-slip piles are excavated manually, which is simple to construct and does not require special mechanical equipment, which can effectively save costs; intermittent digging holes can reduce the risk of landslides during digging and increase safety; the retaining wall support provides temporary support for the digging holes, which is convenient for pouring anti-slip piles.

[0008] As a preferred embodiment of the present invention, when pouring concrete, single pile continuous pouring is adopted; concrete is injected into the pile hole through a string tube or a conduit, and the distance between the lower end of the string tube or the conduit and the concrete surface is 1 to 3m; every 0.5 to 0.7m of continuous pouring, an inserted vibrator is used to vibrate and compact it once; during the pouring of concrete, samples should be taken to make test blocks, and there should be no less than 1 group per shift, per 100 cubic meters, and per 100 plates; a detection tube is embedded in each anti-slip pile to detect the construction quality of the anti-slip pile; specific method: a black steel pipe or plastic pipe with a diameter of 50 to 60 is embedded on both sides of the pile hole to be inspected, and the embedded pipes are parallel to each other and are respectively tied to the inner side of the stirrups.

[0009] Beneficial effects: Continuous pouring of a single pile can minimize bubbles and make the overall connection of the anti-slip pile more firmly. Every 0.5 to 0.7 m of continuous pouring, an inserted vibrator is used to compact the concrete. Through vibration, the particles inside the concrete are more tightly combined together, thereby enhancing the overall strength of the concrete.

[0010] As a preferred embodiment of the present invention, the retaining wall construction steps are as follows: before construction, the ground drainage work is done well to keep the foundation pit and the slope surface dry; the excavation is carried out by skipping, and each section is not more than 10m; the construction section length is determined in combination with the expansion joint setting; when the strength reaches more than 75%, the wall backfill is backfilled and compacted in layers, and the compaction coefficient is not less than 0.93; an expansion joint with a width of 20mm is set every 15m, and a settlement joint is set at the place where the foundation shape and the retaining wall height change, and the joint is filled with asphalt hemp tendons and asphalt coating. Green wood board and other organic elastic waterproof materials, the filling depth is not less than 300mm; a drainage hole is set every 3m of the retaining wall, arranged in a plum blossom shape, with an outward inclination of 5%, and a double-layer permeable geotextile wrapped in a D=500mm graded crushed stone filter bag is set behind the hole and installed in the center; the longitudinal slope of the retaining wall base is not more than 5%; crushed stone soil should be used as the filling material behind the wall, and the fill should be compacted in layers, with each layer of soil 200-300mm thick, the density not less than 0.93, and the comprehensive friction angle of the fill not less than 25°.

[0011] Beneficial effects: The retaining wall is provided with settlement joints, and is filled with organic elastic waterproof materials such as asphalt hemp tendons and asphalt-coated wooden boards. While being waterproof, it can reserve a certain amount of deformation for the retaining wall and buffer part of the pressure. The drainage holes are used to discharge the sewage carried by the landslide outside the retaining wall, and the anti-filter bags are used to filter some larger solid particles to avoid clogging the drainage holes.

[0012] As a preferred embodiment of the present invention, the interception and drainage construction steps are: line setting and verification: used to locate the interception and drainage position; manual trenching: manually digging the interception and drainage trench; cushion layer: laying an 80mm thick gravel soil cushion layer on the base; concrete pouring: the trench bottom and side walls are poured with concrete, and the concrete needs to be vibrated and compacted; maintenance: regular inspection and maintenance of the interception and drainage to ensure that the drainage system is unobstructed; anti-filtration layer: a double-layer permeable geotextile wrapped with a D=500mm graded gravel anti-filtration bag is set on the interception and drainage trench.

[0013] Beneficial effect: The intercepting drainage ditch is used to receive sewage behind the retaining wall and discharge it in a centralized manner, thereby preventing it from accumulating or sinking into the soil, causing the soil to become loose and unable to support the retaining wall.

[0014] As a preferred embodiment of the present invention, the drainage device includes a pile core tube arranged in the anti-slip pile, the pile core tube is arranged in the steel cage, a plurality of branch tubes are provided on the side of the pile core tube facing the landslide, the plurality of branch tubes are arranged up and down and can be connected and fixed to the steel cage, and a drainage part is provided in the pile core tube for draining the accumulated water in the pile core tube.

[0015] Beneficial effect: the pile core pipe is arranged in the steel cage, can be positioned by the steel cage, and can be put in along with it, reducing the construction difficulty; the main reason for landslide is usually severe rainstorm, which washes the hillside to form landslide. At this time, the landslide soil carries a large amount of rainwater, and the groundwater also increases a lot, which can easily soften the soil around the anti-slide pile and reduce the bearing capacity of the anti-slide pile. The branch pipe is used to receive and drain the rainwater in the landslide soil and guide it into the pile core pipe. The pile core pipe is provided with a drainage piece to drain the accumulated water and then drain the landslide soil. The rainwater carried by the soil can be extracted to prevent the soil from softening and reducing the bearing capacity of the anti-slide pile. In this solution, the pile core pipe can be placed in along with the steel cage, wherein the branch pipe can be connected and fixed to the steel cage, and concrete can be poured directly after placement, which is simple to operate and convenient to construct, and avoids the need to set up an additional bundling structure for fixing the pile core pipe and a positioning structure during concrete pouring, thereby saving manpower and reducing costs. It can realize the extraction of accumulated water carried by the landslide soil and reduce the pressure on the anti-slide pile and the retaining wall. At the same time, it has a simple structure and low cost, and can be promoted on a large scale.

[0016] As a preferred embodiment of the present invention, the drainage component is a drainage bottom pipe, the bottom end and the top end of the pile core pipe are in a closed state, the lowest end of the drainage bottom pipe is lower than the branch pipe, the upper end of the drainage bottom pipe is connected to the outside of the anti-slip pile, and a bending part is provided, and the bending part is connected and fixed to the steel cage.

[0017] Beneficial effect: the bottom and top of the pile core pipe are in a closed state, and it is a closed pipe. Water enters from the branch pipe on the side. The lowest end of the drainage bottom pipe is lower than the branch pipe, and the top extends out of the anti-slip pile. When rainwater enters the pile core pipe through the branch pipe, it will gradually accumulate and first submerge the lower end pipe opening of the drainage bottom pipe. When there is too much rainwater, the water level in the pile core pipe rises, which will gradually squeeze the air in the pile core pipe. When the air pressure inside the pile core pipe is greater than the external pressure, the accumulated water will be discharged outward from the drainage bottom pipe; the bent part is arranged above the drainage bottom pipe, which can prevent rainwater from directly entering the pile core pipe through the drainage bottom pipe, and at the same time, the accumulated water can be discharged outward through the bent part, thereby playing a role of drainage; the bent part is connected and fixed to the steel cage, and can fix the side of the pile core pipe away from the branch pipe, so that the pile core pipe can be installed more firmly.

[0018] As a preferred embodiment of the present invention, the branch pipe includes a first horizontal pipe connected to the pile core pipe, the first horizontal pipe is connected to a first vertical pipe, a second vertical pipe is arranged on the side of the first vertical pipe, the first vertical pipe is connected to the lower end of the second vertical pipe, the diameter of the second vertical pipe is greater than the diameter of the first vertical pipe, the length of the second vertical pipe is greater than the length of the first vertical pipe, and the upper end of the second vertical pipe is connected to the second horizontal pipe.

[0019] Beneficial effects: the first transverse tube is used to communicate with the pile core tube, the first vertical tube is connected to the lower end of the second vertical tube, the upper end of the second vertical tube is connected to the second transverse tube, and the second transverse tube is used to receive accumulated water from the soil, the accumulated water first fills up the lower ends of the first vertical tube and the second vertical tube, and then enters the pile core tube after overflowing the first transverse tube; the arrangement of the first vertical tube and the second vertical tube can effectively prevent the gas in the pile core tube from being discharged during the entry of accumulated water, resulting in the inability to increase the air pressure in the pile core tube; the diameter of the second vertical tube is larger than that of the first A vertical pipe diameter, that is, the cross-sectional area of ​​the second vertical pipe is larger than the cross-sectional area of ​​the first vertical pipe. It can be deduced from the pressure formula that the pressure in the pile core pipe must be much greater than the air pressure to discharge the gas from the first horizontal pipe. At the same time, multiple branch pipes are arranged. The air in the pile core pipe must squeeze out the accumulated water in multiple first vertical pipes at the same time before it can be discharged, which will further increase the maximum pressure in the pile core pipe. When the pressure in the pile core pipe reaches a certain level, the accumulated water in the pile core pipe can be discharged from the drainage bottom pipe, thereby achieving the effect of collecting groundwater and automatically discharging accumulated water.

[0020] As a preferred embodiment of the present invention, a shielding cover is fixed to the outer side of the second transverse tube for wrapping the tube opening of the second transverse tube, the second transverse tube is filled with gravel bags, and a sealing cloth is fixed to the tube opening of the second transverse tube.

[0021] Beneficial effect: the shielding cover is used to wrap the pipe mouth of the second transverse pipe to prevent concrete from entering the second transverse pipe and clogging it during concrete pouring; the gravel bag and the sealing cloth are both used to fill the second transverse pipe, so that the accumulated water can smoothly enter the branch pipe and block the entry of solid particles, thereby preventing the accumulated water from bringing in a large amount of solid particles such as mud, soil, etc., which may cause the pile core pipe to be blocked.

[0022] As a preferred embodiment of the present invention, the pipe mouth of the bent part faces the adjacent anti-slip pile, and a connecting pipe is fixed on the bent part. The connecting pipe is used to be connected and fixed to the bent part of the adjacent anti-slip pile. The connecting pipe is communicated with the bent part, and a water outlet pipe for drainage is provided, and the water outlet pipe faces the side away from the landslide.

[0023] Beneficial effects: The bent part is connected and fixed through the connecting pipe and the bent part of the adjacent anti-slip pile, so that two adjacent anti-slip piles can be connected to each other. When one of the anti-slip piles is under pressure, the other can share part of the pressure through the bent part and the connecting pipe, thereby improving the bearing capacity of the anti-slip pile; the water outlet pipe is used to discharge the discharged accumulated water to the side away from the landslide. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0025] Figure 1 The present invention is an overall construction flow chart of an embodiment of the construction method for comprehensive management of geological disasters.

[0026] Figure 2 This is a flow chart of the anti-slide pile construction of an embodiment of the geological disaster comprehensive management construction method of the present invention.

[0027] Figure 3 The present invention is a flow chart of the retaining wall construction of an embodiment of the construction method for comprehensive management of geological disasters.

[0028] Figure 4 This is a flow chart of the interception and drainage construction of an embodiment of the geological disaster comprehensive management construction method of the present invention.

[0029] Figure 5 This is a structural schematic diagram of the drainage device described in an embodiment of the construction method for comprehensive management of geological disasters of the present invention.

[0030] Figure 6 This is an embodiment of the construction method for comprehensive management of geological disasters of the present invention. Figure 5 A partial enlargement of detail A.

[0031] Figure 7 It is a structural schematic diagram of the anti-slide piles described in the embodiment of the construction method for comprehensive management of geological disasters of the present invention.

[0032] The figure marks in the drawings of the specification include: 1 landslide, 2 anti-slide piles, 3 pile core pipe, 4 branch pipes, 4-1 first horizontal pipe, 4-2 first vertical pipe, 4-3 second vertical pipe, 4-4 second horizontal pipe, 5 drainage parts, 5-1 drainage bottom pipe, 5-2 bending part, 6 shielding cover, 7 gravel bag, 8 sealing cloth, 9 connecting pipe, 10 water outlet pipe. DETAILED DESCRIPTION

[0033] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0034] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0036] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0037] As attached Figure 1 As shown, the present invention provides a construction method for comprehensive management of geological disasters: including construction access roads: building construction access roads to meet the transportation and personnel passage during the construction process; temporary drainage projects: draining the accumulated water on site through water pumps, manual operations, etc.; main project: after building the access roads and draining the accumulated water, the main project of management is excavated; detection: the detection includes pre-buried detection tubes and ultrasonic detection, the detection tubes are used to detect the construction quality, and ultrasonic detection of concrete pouring quality; acceptance: the construction project is accepted according to the acceptance specifications.

[0038] As attached Figure 1 As shown, in this embodiment, the main project includes anti-slip piles 2, retaining walls and intercepting and draining. The anti-slip piles 2 are used to support the sliding force of the sliding body; the retaining walls are used to prevent the roadbed slope or base from sliding to ensure the stability of the roadbed; the intercepting and draining is used to intercept groundwater or rainwater to reduce interference with construction. The anti-slip piles 2 are provided with drainage devices to discharge the water accumulated in the anti-slip piles 2. The anti-slip piles 2 and the retaining walls are used to prevent landslides 1, and the intercepting and draining is used to discharge sewage and reduce the pressure on the retaining walls. Compared with traditional landslide 1 management, the discharge of sewage is enhanced. The main reason for landslide 1 is usually severe rainstorm weather, which scours the hillside to form landslide 1. At this time, the retaining wall and the anti-slip piles 2 not only have to withstand the impact of the landslide 1, but also have to block rainwater, which is under great pressure. The intercepting and draining effectively guides the rainwater to discharge, reduces the pressure on the retaining wall, and enhances the ability to resist landslide 1.

[0039] As attached Figure 5 and attached Figure 6As shown, in this embodiment, the drainage device includes a pile core tube 3 arranged in the anti-slip pile 2, and the pile core tube 3 is arranged in the steel cage. The side of the pile core tube 3 facing the landslide 1 is provided with multiple branch pipes 4, and the pile core tube 3 is provided with a drainage member 5 for draining the accumulated water in the pile core tube 3; in this embodiment, the drainage member 5 is a drainage bottom pipe 5-1, the bottom end and the top end of the pile core tube 3 are in a closed state, the lowest end of the drainage bottom pipe 5-1 is lower than the branch pipe 4, the upper end of the drainage bottom pipe 5-1 is connected to the outside of the anti-slip pile 2, and a bending part 5-2 is provided, and the bending part 5-2 is connected and fixed to the steel cage; the main reason for the occurrence of landslide 1 is usually severe rainstorm weather, which washes the hillside to form landslide 1. At this time, the soil of the landslide 1 carries a large amount of rainwater, and the branch pipe 4 is used to receive and drain the rainwater in the soil of the landslide 1 and introduce it into the pile core tube 3, so that The pile core pipe 3 is provided with a drainage bottom pipe 5-1 for draining accumulated water. Specifically, the lowest end of the drainage bottom pipe 5-1 is lower than the branch pipe 4, and the top end extends out of the anti-slip pile 2. When rainwater enters the pile core pipe 3 through the branch pipe 4, it will gradually accumulate and first submerge the lower end pipe opening of the drainage bottom pipe 5-1. When there is too much rainwater, the water level in the pile core pipe 3 rises, which will gradually squeeze the air in the pile core pipe 3. When the air pressure inside the pile core pipe is greater than the external pressure, the accumulated water will be discharged outward from the drainage bottom pipe 5-1. The bending part 5-2 is provided above the drainage bottom pipe 5-1, which can prevent rainwater from directly entering the pile core pipe 3 through the drainage bottom pipe 5-1. At the same time, the accumulated water can be discharged outward through the bending part 5-2, thereby playing a role of drainage. The rainwater carried by the soil of the landslide 1 is discharged to prevent the soil from softening and reducing the bearing capacity of the anti-slip pile 2.

[0040] In addition, the pile core tube 3 in the present solution can be placed along with the steel cage, wherein the branch tube 4 can be connected and fixed to the steel cage, and the side of the pile core tube 3 close to the landslide 1 can be fixed, while the side away from the landslide 1 can be connected and fixed to the steel cage through the bent portion 5-2, so that the pile core tube 3 is stably installed in the steel cage and can be placed into the pile hole along with the steel cage, and concrete can be directly poured after placement, which is simple to operate and convenient to construct, and avoids the need for additional bundling structures for fixing the pile core tube 3 and positioning structures during concrete pouring, thereby saving manpower and reducing costs.

[0041] As attached Figure 6As shown, in this embodiment, the branch pipe 4 includes a first transverse pipe 4-1 connected to the pile core pipe, the first transverse pipe 4-1 is connected to the first vertical pipe 4-2, the side of the first vertical pipe 4-2 is provided with a second vertical pipe 4-3, the first vertical pipe 4-2 is connected to the lower end of the second vertical pipe 4-3, the diameter of the second vertical pipe 4-3 is greater than the diameter of the first vertical pipe 4-2, the length of the second vertical pipe 4-3 is greater than the length of the first vertical pipe 4-2, the upper end of the second vertical pipe 4-3 is connected to the second transverse pipe 4-4, the outer side of the second transverse pipe 4-4 is fixed with a shielding cover 6 for wrapping the pipe mouth of the second transverse pipe 4-4, and the inside of the second transverse pipe 4-4 is provided with a shielding cover 6 for wrapping the pipe mouth of the second transverse pipe 4-4. The second transverse tube 4-4 is filled with gravel bags 7, and a sealing cloth 8 is fixed to the mouth of the second transverse tube 4-4; the first transverse tube 4-1 is used to communicate with the pile core tube 3, the first vertical tube 4-2 is connected to the lower end of the second vertical tube 4-3, the upper end of the second vertical tube 4-3 is connected to the second transverse tube 4-4, and the second transverse tube 4-4 is used to receive accumulated water from the soil, the accumulated water first fills the lower ends of the first vertical tube 4-2 and the second vertical tube 4-3, and then enters the pile core tube 3 after overflowing the first transverse tube 4-1; the arrangement of the first vertical tube 4-2 and the second vertical tube 4-3 can effectively prevent the gas in the pile core tube 3 from being discharged during the entry of accumulated water, causing the pile core tube 3 to be 3, the air pressure inside cannot be increased; the diameter of the second vertical pipe 4-3 is larger than the diameter of the first vertical pipe 4-2, that is, the cross-sectional area of ​​the second vertical pipe 4-3 is larger than the cross-sectional area of ​​the first vertical pipe 4-2. It can be deduced from the pressure formula that the pressure inside the pile core pipe 3 must be much greater than the air pressure to discharge the gas from the first horizontal pipe 4-1. At the same time, multiple branch pipes 4 are set. The air in the pile core pipe 3 must squeeze out the accumulated water in multiple first vertical pipes 4-2 at the same time before it can be discharged, which will further increase the maximum pressure inside the pile core pipe 3. When the pressure inside the pile core pipe 3 reaches a certain level, the accumulated water in the pile core pipe 3 can be discharged from the drainage bottom pipe 5-1, so as to collect underground water. The shielding cover 6 is used to wrap the mouth of the second transverse tube 4-4 to prevent concrete from entering the second transverse tube 4-4 and clogging it during concrete pouring; the gravel bag 7 and the sealing cloth 8 are both used to fill the second transverse tube 4-4, so that the accumulated water can smoothly enter the second transverse tube 4-4, block the entry of solid particles, and prevent the accumulated water from bringing in a large amount of solid particles such as mud and soil, which may block the pile core tube 3. The branch pipe 4, the shielding cover 6, the gravel bag 7 and the sealing cloth 8 can all be installed on the ground, and then fixed at the steel bar gap of the steel cage, and placed into the pile hole following the steel cage, which is simple to operate and convenient to construct.

[0042] As attached Figure 7As shown, in the present embodiment, the pipe mouth of the bending part 5-2 faces the adjacent anti-slip pile 2, and a connecting pipe 9 is fixed on the bending part 5-2, and the connecting pipe 9 is used to be connected and fixed with the bending part 5-2 of the adjacent anti-slip pile 2, the connecting pipe 9 is communicated with the bending part 5-2, and a water outlet pipe 10 for drainage is provided, and the water outlet pipe 10 faces the side away from the landslide; the bending part 5-2 is connected and fixed with the bending part 5-2 of the adjacent anti-slip pile 2 through the connecting pipe 9, so that two adjacent anti-slip piles 2 can be connected to each other, and when one of the anti-slip piles 2 is subjected to pressure, the other can share part of the pressure through the bending part 5-2 and the connecting pipe 9, thereby improving the bearing capacity of the anti-slip pile 2; the water outlet pipe 10 is used to discharge the discharged accumulated water to the side away from the landslide.

[0043] As attached Figure 2As shown, in this embodiment, the construction steps of the anti-sliding pile 2 are as follows: construction preparation: prepare materials according to engineering requirements, and build a warehouse for steel bars; line setting and verification: used to locate the position of the anti-sliding pile 2; manual hole digging: manual excavation of foundation pit and retaining wall; pile hole geological cataloging: cataloging the on-site conditions of geology, hydrology, etc. during the drilling process, and finally compiling a borehole core column chart; slot inspection: used to check whether the geological data is consistent with the expected data, and whether the conclusions and suggestions of the survey results report are correct and feasible; steel cage binding: clean up the sediment at the bottom of the pile hole, and after passing the inspection, Put in the steel cage, which can be mechanically hoisted and positioned in the pile hole, and the drainage device is tied to the steel cage and put in together; concrete pouring: concrete is poured after the steel cage is placed to form the anti-slip pile 2; maintenance: the anti-slip pile 2 that has been poured is covered with sacks and straw mats and poured with clean water for maintenance, and the maintenance period is more than 7 days; retaining wall construction: retaining wall construction is carried out after the concrete strength of the pile body reaches 75% of the design strength; the anti-slip pile 2 is excavated manually, which has the characteristics of simple construction and no need for special mechanical equipment, and can effectively save costs; the manual digging adopts a jumping method, and each 1-2 holes are made at intervals; concrete is used to make retaining wall support for the soil layer section, and a lock is set at the hole mouth. Interval hole digging can reduce the risk of landslide 1 during hole digging and increase safety; the retaining wall support provides temporary support for the digging hole, which is convenient for pouring anti-sliding piles 2; when pouring concrete, single pile continuous pouring is adopted; concrete is injected into the pile hole through a string tube or a conduit, and the distance between the lower end of the string tube or the conduit and the concrete surface is 1-3m; every 0.5-0.7m of continuous pouring, an inserted vibrator is used to vibrate and compact it once; during the concrete pouring process, samples should be taken to make test blocks, and each shift, every 100 cubic meters, There should be no less than one group for every hundred plates; a detection tube is embedded in each anti-slip pile 2 to detect the construction quality of the anti-slip pile 2; specific method: a black steel pipe or plastic pipe with a diameter of 50 to 60 is embedded on both sides of the pile hole to be tested. The embedded pipes are parallel to each other and tied to the inside of the stirrups respectively. Continuous pouring of a single pile can minimize bubbles and make the overall connection of the anti-slip pile 2 more firmly. Every 0.5 to 0.7 m of continuous pouring, an inserted vibrator is used to vibrate and compact it once. Through the vibration, the particles inside the concrete are more tightly combined together, thereby enhancing the overall strength of the concrete.

[0044] As attached Figure 3As shown, in this embodiment, the retaining wall construction steps are as follows: before construction, the ground drainage work is done well to keep the foundation pit and the slope surface dry; the excavation is carried out by skipping, and each section is not more than 10m; the length of the construction section is determined in combination with the expansion joint setting; when the strength reaches more than 75%, the wall backfill is backfilled and compacted in layers, and the compaction coefficient is not less than 0.93; an expansion joint with a width of 20mm is set every 15m, and a settlement joint is set at the place where the foundation shape and the retaining wall height change, and the joint is filled with organic elastic waterproof materials such as asphalt hemp tendons and asphalt-coated wooden boards, and the filling depth is not less than 300mm; a drainage hole is set every 3m of the retaining wall, arranged in a plum blossom shape, with an outward inclination of 5%, and the hole A filter bag with graded crushed stone of D=500mm wrapped by double-layer permeable geotextile is set on the rear side and installed in the center; the longitudinal slope of the retaining wall base is not more than 5%; the filling material behind the wall shall be crushed stone soil, and the fill shall be rolled in layers. The thickness of each layer is 200-300mm, the density is not less than 0.93, and the comprehensive friction angle of the fill is not less than 25°; the retaining wall is provided with settlement joints, and the interior is filled with organic elastic waterproof materials such as asphalt hemp tendons and asphalt-coated wooden boards, which can reserve a certain amount of deformation for the retaining wall while waterproofing and buffer part of the pressure. The drainage holes are used to discharge the sewage carried by the landslide 1 to the outside of the retaining wall, and the filter bag is used to filter some larger solid particles to avoid clogging the drainage holes.

[0045] As attached Figure 4 As shown, in this embodiment, the interception and drainage construction steps are: line setting and verification: used to locate the interception and drainage position; manual trenching: manually digging the interception and drainage ditch; cushion layer: 80mm thick crushed stone soil cushion layer is laid on the base; concrete pouring: the bottom and side walls of the ditch are poured with concrete, and the concrete needs to be vibrated and compacted; maintenance: regular inspection and maintenance of the interception and drainage to ensure that the drainage system is unobstructed; anti-filtration layer: a double-layer permeable geotextile wrapped with a D=500mm graded crushed stone anti-filtration bag is set on the interception and drainage ditch; the interception and drainage ditch is used to receive the sewage behind the retaining wall, and discharge it in a centralized manner to avoid accumulation or sinking into the soil, resulting in the soil being loose and unable to support the retaining wall.

[0046] The preferred implementation modes of the present application are described in detail above in conjunction with the accompanying drawings. Typical known structures and common knowledge technologies in the preferred implementation modes are not described in detail here. Ordinary technicians in the relevant field can improve and implement the technical solutions of the present invention based on their own abilities under the inspiration given by the present implementation modes. Some typical known structures, known methods or common knowledge technologies should not become obstacles for ordinary technicians in the relevant field to implement the present application.

[0047] The scope of protection required by this application shall be based on the contents of its claims, and the contents recorded in the invention content, specific implementation methods and drawings of the specification shall be used to interpret the claims.

[0048] Within the technical concept of the present application, several modifications may be made to the specific implementation methods of the present application, and these modified specific implementation methods should also be regarded as within the protection scope of the present application.

Claims

1. A construction method for comprehensive management of geological disasters, characterized by: Including construction access roads: Construction access roads are built to meet the transportation and personnel traffic during the construction process; Temporary drainage project: drain the accumulated water on site through pumps, manual operations, etc.; Main project: After building the access road and draining the accumulated water, the main project of excavation and treatment is carried out; Testing: Testing includes pre-buried testing tubes and ultrasonic testing. The testing tubes are used to test the construction quality, and ultrasonic testing is used to test the concrete pouring quality. Acceptance: Acceptance of construction works according to acceptance specifications; The main project includes anti-slip piles, retaining walls and intercepting and draining. The anti-slip piles are used to support the sliding force of the sliding body; the retaining walls are used to prevent the roadbed slope or base from sliding to ensure the stability of the roadbed; the intercepting and draining is used to intercept groundwater or rainfall water to reduce interference with construction. The anti-slip piles are provided with drainage devices to drain the water accumulated in the anti-slip piles; The drainage device comprises a pile core pipe arranged in the anti-slide pile, the pile core pipe is arranged in a steel cage, a plurality of branch pipes are arranged on the side of the pile core pipe facing the landslide, the plurality of branch pipes are arranged up and down and can be connected and fixed to the steel cage, and a drainage member is arranged in the pile core pipe for draining the accumulated water in the pile core pipe; The drainage member is a drainage bottom pipe, the bottom end and the top end of the pile core pipe are in a closed state, the lowest end of the drainage bottom pipe is lower than the branch pipe, the upper end of the drainage bottom pipe is connected to the outside of the anti-slip pile, and a bending part is provided, and the bending part is connected and fixed to the steel cage; The branch pipe includes a first transverse pipe connected to the pile core pipe, the first transverse pipe is connected to a first vertical pipe, a second vertical pipe is arranged on the side of the first vertical pipe, the first vertical pipe is connected to the lower end of the second vertical pipe, the diameter of the second vertical pipe is greater than the diameter of the first vertical pipe, the length of the second vertical pipe is greater than the length of the first vertical pipe, and the upper end of the second vertical pipe is connected to the second transverse pipe, the accumulated water first fills up the lower ends of the first vertical pipe and the second vertical pipe, and then enters the pile core pipe after overflowing the first transverse pipe; the arrangement of the first vertical pipe and the second vertical pipe can prevent the gas in the pile core pipe from being discharged during the entry of the accumulated water, resulting in the inability to increase the air pressure in the pile core pipe.

2. The construction method for comprehensive management of geological disasters according to claim 1 is characterized in that: The anti-slide pile construction steps are as follows: Construction preparation: prepare materials according to project requirements and build a warehouse for steel bars; Line setting and verification: used to locate the position of the anti-sliding pile; Manual excavation: manual excavation of foundation pit and retaining wall; Pile hole geological recording: record the geological, hydrological and other on-site conditions during the drilling process, and finally compile a borehole core columnar diagram; Test trench: used to check whether the geological data is consistent with the expected data, and whether the conclusions and suggestions in the survey report are correct and feasible; Tie up the steel cage: clean up the sediment at the bottom of the pile hole, put the steel cage in after inspection, the steel cage can be mechanically hoisted and positioned in the pile hole, and the drainage device is tied to the steel cage and put in together; Concrete pouring: After the steel cage is placed, concrete is poured to form anti-sliding piles; Maintenance: Cover the poured anti-slip piles with sacks and straw mats and pour water for maintenance. The maintenance period is more than 7 days; Construction of retaining wall: The retaining wall shall be constructed after the concrete strength of the pile reaches 75% of the design strength; The manual hole digging adopts a jumping method, with 1 to 2 holes dug each time; concrete is used to make wall support for the soil layer section, and a locking treatment is set at the hole mouth.

3. The construction method for comprehensive management of geological disasters according to claim 2 is characterized in that: When pouring the concrete, single pile continuous pouring is adopted; concrete is injected into the pile hole through a string tube or a conduit, and the distance between the lower end of the string tube or the conduit and the concrete surface is 1 to 3m; every 0.5 to 0.7m of continuous pouring, an inserted vibrator is used to vibrate and compact it once; during the concrete pouring process, samples should be taken to make test blocks, and there should be no less than 1 group per shift, per 100 cubic meters, and per 100 plates; a detection tube is embedded in each anti-slip pile to detect the construction quality of the anti-slip pile; specific method: a black steel pipe or plastic pipe with a diameter of 50 to 60 is embedded on both sides of the pile hole to be tested, and the embedded pipes are parallel to each other and tied to the inner side of the stirrups respectively.

4. The construction method for comprehensive management of geological disasters according to claim 1 is characterized in that: The retaining wall construction steps are as follows: before construction, do a good job of ground drainage to keep the foundation pit and the slope surface dry; Use skip excavation, each section is no longer than 10m; the construction section length is determined in combination with the expansion joint setting; when the strength reaches more than 75%, backfill the wall backfill and compact it layer by layer, with a compaction coefficient of no less than 0.93; An expansion joint with a width of 20mm is set every 15m, and settlement joints are set at the places where the foundation shape and the retaining wall height change. The joints are filled with organic elastic waterproof materials such as asphalt hemp tendons and asphalt-coated wooden boards, and the filling depth is not less than 300mm; A drainage hole is set every 3m in the retaining wall, arranged in a plum blossom shape with an outward inclination of 5%. A filter bag with graded crushed stone of D=500mm wrapped in double-layer permeable geotextile is set at the back of the hole and installed in the center; The longitudinal slope of the retaining wall base shall not exceed 5%; The backfill behind the wall should be made of crushed stone soil, and the fill should be compacted in layers. The thickness of each layer should be 200 to 300 mm, the density should be not less than 0.93, and the comprehensive friction angle of the fill should be not less than 25°.

5. The construction method for comprehensive management of geological disasters according to claim 1 is characterized in that: The interception and drainage construction steps are as follows: line setting and verification: used to locate the interception and drainage position; Manual trenching: Manually digging trenches for interception and drainage; Cushion: 80mm thick gravel soil cushion is laid on the base; Concrete pouring: The bottom and side walls of the trench are poured with concrete, which needs to be vibrated and compacted; Maintenance: Regular inspection and maintenance of interception and drainage to ensure that the drainage system is unobstructed; Filter layer: A filter bag with graded gravel of D=500mm wrapped with double-layer permeable geotextile is set on the intercepting and drainage ditch.

6. The construction method for comprehensive management of geological disasters according to claim 1 is characterized in that: A shielding cover is fixed on the outer side of the second transverse tube, which is used to wrap the pipe opening of the second transverse tube. The second transverse tube is filled with gravel bags, and a sealing cloth is fixed to the pipe opening of the second transverse tube.

7. The construction method for comprehensive management of geological disasters according to claim 6 is characterized in that: The pipe mouth of the bent part faces the adjacent anti-slip pile. A connecting pipe is fixed on the bent part. The connecting pipe is used to be connected and fixed to the bent part of the adjacent anti-slip pile. The connecting pipe is communicated with the bent part and is provided with a water outlet pipe for drainage. The water outlet pipe faces the side away from the landslide.

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