CN113026772A - Landslide body reinforcing method - Google Patents

Landslide body reinforcing method Download PDF

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Publication number
CN113026772A
CN113026772A CN202110273887.1A CN202110273887A CN113026772A CN 113026772 A CN113026772 A CN 113026772A CN 202110273887 A CN202110273887 A CN 202110273887A CN 113026772 A CN113026772 A CN 113026772A
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CN
China
Prior art keywords
landslide body
drainage
road
drain
ditch
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110273887.1A
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Chinese (zh)
Inventor
韩永阳
雷军龙
王鵾鹏
鲁承刚
尚建明
宋振华
梁守锦
董涛
刘春龙
王占龙
杨平
俞文浩
李建民
范永亮
余洪鲛
尹朝霞
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Sinohydro Engineernig Bureau 4 South Zhuhai Engineering Co ltd
Sinohydro Engineering Bureau 4 Co Ltd
Original Assignee
Sinohydro Engineernig Bureau 4 South Zhuhai Engineering Co ltd
Sinohydro Engineering Bureau 4 Co Ltd
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Filing date
Publication date
Application filed by Sinohydro Engineernig Bureau 4 South Zhuhai Engineering Co ltd, Sinohydro Engineering Bureau 4 Co Ltd filed Critical Sinohydro Engineernig Bureau 4 South Zhuhai Engineering Co ltd
Priority to CN202110273887.1A priority Critical patent/CN113026772A/en
Publication of CN113026772A publication Critical patent/CN113026772A/en
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00Excavations; Bordering of excavations; Making embankments
    • E02D17/20Securing of slopes or inclines
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00Excavations; Bordering of excavations; Making embankments
    • E02D17/20Securing of slopes or inclines
    • E02D17/207Securing of slopes or inclines with means incorporating sheet piles or piles
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D3/00Improving or preserving soil or rock, e.g. preserving permafrost soil
    • E02D3/02Improving by compacting
    • E02D3/10Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F3/00Sewer pipe-line systems
    • E03F3/02Arrangement of sewer pipe-lines or pipe-line systems
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00Adapting or protecting infrastructure or their operation
    • Y02A30/60Planning or developing urban green infrastructure

Abstract

The invention provides a landslide body reinforcing method, which comprises an outside intercepting ditch building step, an anti-slide pile construction step, a first oblique drainage construction step, a retaining wall construction step and a first platform intercepting ditch construction step, wherein the outside intercepting ditch building step comprises the following steps: building an external intercepting ditch around the periphery of the landslide body; the construction steps of the slide-resistant pile comprise: drilling a plurality of boreholes; placing a steel reinforcement cage in the drilled hole and pouring concrete to form an anti-slide pile; the cap beam is sleeved at the free ends of the anti-slide piles; the first oblique drainage construction step comprises the following steps: embedding a plurality of first drainage pipes into the landslide body, wherein the peripheral walls of the first drainage pipes are provided with first drainage holes; the retaining wall construction step comprises: building a retaining wall at one end of the landslide body close to the road; the first platform intercepting ditch construction step comprises: and building a first platform catch basin. The landslide mass reinforcing method can effectively enhance the anti-skid stability of the landslide mass, prevent the landslide mass from being unstable, avoid damage to the highway and reduce the maintenance cost of the highway.

Description

Landslide body reinforcing method
Technical Field
The invention relates to the technical field of landslide body reinforcement, in particular to a landslide body reinforcement method.
Background
At present, road engineering is affected by various geological hazards, wherein the landslide body has the greatest influence on the driving safety of a road, and the landslide body is the phenomenon that rock-soil bodies forming a slope appear integral instability along the inner weak surface of the slope body under the action of gravity and other external forces.
The existing common landslide body strengthening treatment modes mainly comprise the steps of clearing a landslide body, installing an anti-skidding retaining pile and the like. The main form of installing the anti-sliding supporting and retaining pile is a rectangular anti-sliding pile, and the construction mode is mainly that a pile is formed by manual hole digging and pouring, so that the danger is high. The treatment of clearing the landslide body can cause the increase of road construction land and the increase of project construction cost, and the road use safety can be further influenced if the landslide body cannot be treated in place in one treatment.
In addition, water is an important factor causing instability of a landslide body, and water seeps downwards to cause the landslide body, so that the weight of the landslide body is increased, a soil body is softened, the shear strength of a soil and stone layer is reduced, and the landslide is generated. Therefore, drainage is also an important method for landslide prevention, and the existing anti-skid retaining piles cannot play a role in drainage.
Disclosure of Invention
The invention mainly aims to provide a landslide body reinforcing method which can effectively enhance the anti-skid stability of a landslide body, prevent instability of the landslide body, avoid damage to a highway and reduce maintenance cost of the highway.
In order to realize the main purpose of the invention, the invention provides a landslide body reinforcing method, which comprises an outside intercepting ditch building step, an anti-slide pile construction step, a first oblique drainage construction step, a retaining wall construction step and a first platform intercepting ditch construction step;
the outside intercepting ditch building step comprises the following steps: building an external intercepting ditch around the periphery of the landslide body;
the construction steps of the slide-resistant pile comprise: drilling a plurality of drill holes in a stable stratum which penetrates through the landslide body in the vertical direction and extends to the lower part of the landslide body, wherein the plurality of drill holes are arranged side by side in the extending direction of the road; placing a steel reinforcement cage in each drill hole and pouring concrete to form an anti-slide pile; a cap beam is sleeved at the free end of the anti-slide piles, which is far away from the stable stratum and protrudes out of the landslide body;
the first oblique drainage construction step comprises the following steps: embedding a plurality of first drainage pipes into a landslide body, wherein the plurality of first drainage pipes are arranged side by side in the extending direction of a road, and a first drainage hole is formed in the peripheral wall of each first drainage pipe;
the retaining wall construction step comprises: building a retaining wall at one end of the landslide body close to the road, wherein the retaining wall is arranged in a step shape in the vertical direction;
the first platform intercepting ditch construction step comprises: the method comprises the steps that a first platform intercepting ditch is built by penetrating through a landslide body in the extending direction of a road, the two ends of the first platform intercepting ditch are communicated with an outside intercepting ditch respectively, the first platform intercepting ditch is located at the first end, close to the road, of a first drainage pipe, and the first ends of a plurality of first drainage pipes are communicated with the first platform intercepting ditch respectively.
According to the scheme, the landslide body reinforcing method adopts the anti-slide piles and the retaining walls to support and block the landslide body, the landslide body drainage system is arranged to effectively drain accumulated water in the landslide body, and rainwater is prevented from entering cracks of the landslide body. The landslide body drainage system prevents rainwater from entering a landslide body crack by building an external catch basin around the periphery of the landslide body. Meanwhile, accumulated water in the landslide body flows into the first drainage pipe through the first drainage hole and then flows into the outer intercepting ditch through the first platform intercepting ditch, so that the accumulated water in the landslide body can be discharged. The landslide mass reinforcing method can effectively enhance the anti-skid stability of the landslide mass, prevent the landslide mass from being unstable, avoid damage to the highway and reduce the maintenance cost of the highway. Moreover, the method for reinforcing the landslide body has high construction efficiency and low construction cost, and solves the problem that the treatment difficulty is increased due to the expansion of the sliding range of the landslide body in the existing landslide body reinforcing construction process.
Preferably, before the retaining wall construction step is performed, the method for reinforcing a sliding mass further includes a second oblique water drainage construction step, and the second oblique water drainage construction step includes: embedding a plurality of second drain pipes into the landslide body, wherein the plurality of second drain pipes are arranged side by side in the extending direction of the road, and a second drain hole is formed in the peripheral wall of each second drain pipe; after the first platform catch basin construction step is executed, the landslide body reinforcing method further comprises a second platform catch basin construction step, and the second platform catch basin construction step comprises the following steps: and a second platform catch basin is built by penetrating through a landslide body in the extending direction of the road, two ends of the second platform catch basin are respectively communicated with the outside catch basins, the second platform catch basin is positioned at the first end, close to the road, of the second drain pipes, and the first ends of the plurality of second drain pipes are respectively communicated with the second platform catch basins.
According to a further scheme, before the step of building the outside intercepting drain or after the step of constructing the second platform intercepting drain, the method for reinforcing the landslide body further comprises the step of constructing a first road-based drainage drain; the first way base drainage ditch construction step comprises: and a first path of base drainage ditch is built along the extending direction of the highway, the first path of base drainage ditch penetrates through one end of the landslide body close to the highway, and two ends of the outside intercepting ditch are respectively communicated with the first path of base drainage ditch.
According to a further scheme, before the step of building the outside intercepting ditch or after the step of constructing the first road-based drainage ditch is executed, the landslide body reinforcing method further comprises a step of constructing a second road-based drainage ditch; the second road base drainage ditch construction step comprises: and a second road-based drainage ditch is built along the extending direction of the first road-based drainage ditch and is positioned outside the landslide body.
In a further aspect, the first drainage pipe is a hollow circular pipe, and the first oblique drainage construction step further comprises: before the first drainage pipe is embedded into the landslide body, the geotechnical cloth is blocked at the second port of the first drainage pipe, and the geotechnical cloth is wrapped on the outer surface of the peripheral wall of the first drainage hole formed in the first drainage pipe.
The further proposal is that the second drain pipe is a hollow ring pipe, and the second oblique drainage construction step further comprises: before the second drain pipe is embedded into the landslide body, the geotextile is blocked at the second port of the second drain pipe, and the geotextile is wrapped on the outer surface of the peripheral wall of the second drain pipe, which is provided with the second drain hole.
According to a further scheme, the slide-resistant pile construction step further comprises the following steps: and a reinforcing rib is embedded into the free end face of each anti-slide pile, and the exposed end face of each reinforcing rib is provided with a cross groove.
The further scheme is that in the extending direction of the landslide body towards the road, the first platform intercepting ditch is located in the middle of the landslide body, the second platform intercepting ditch is arranged close to the retaining wall, and two second drain pipes are arranged between every two adjacent anti-slide piles.
The landslide mass reinforcing method further comprises a monitoring point arrangement step before the step of constructing the outside intercepting drain is executed, wherein the monitoring point arrangement step comprises the following steps of: a plurality of monitoring points are arranged on the landslide body and used for acquiring physical and mechanical parameters of the landslide body; the physical mechanical parameters of the sliding mass comprise the physical mechanical parameters of the initial state of the sliding mass and the physical mechanical parameters of the sliding mass after deformation and softening, and the physical mechanical parameters comprise volume weight, cohesive force, internal friction angle, tensile strength, elastic modulus and Poisson ratio.
The method for reinforcing the sliding mass further comprises a step of locally leveling the slope surface before the step of arranging the monitoring points is executed, wherein the step of locally leveling the slope surface comprises the following steps of: leveling the slope surface of the sliding mass at the position of the drilled hole; and carrying out slope leveling on the landslide body at the position of the monitoring point.
Drawings
FIG. 1 is a top view of an embodiment of the present invention for landslide body reinforcement engineering.
Fig. 2 is an enlarged view of fig. 1 at a.
FIG. 3 is a cross-sectional view of an embodiment of the present invention for landslide body reinforcement engineering.
Fig. 4 is an enlarged view of fig. 3 at B.
Fig. 5 is an enlarged view of fig. 3 at C.
Fig. 6 is a top view of a slide pile in an embodiment of the present invention for landslide body reinforcement work.
Fig. 7 is a front view of a slide pile in an embodiment of the landslide body reinforcement project of the present invention.
FIG. 8 is a front view of a drainage pipe in an embodiment of the present invention for landslide body reinforcement work.
FIG. 9 is a flow chart of an embodiment of the method of the present invention for strengthening a sliding mass.
The invention is further explained with reference to the drawings and the embodiments.
Detailed Description
Landslide mass drainage system embodiment:
referring to fig. 1 to 8, the embodiment discloses a landslide body drainage system for a landslide body reinforcement project, which includes a first base drainage ditch 10, a second base drainage ditch 11, an outdoor intercepting ditch 2, a first platform intercepting ditch 3, a plurality of first drainage pipes 4, a second platform intercepting ditch 5 and a plurality of second drainage pipes 6, wherein the first base drainage ditch 10 extends along an extending direction of a road, the outdoor intercepting ditch 2 is arranged around the periphery of a landslide body 1, and two ends of the outdoor intercepting ditch 2 are respectively communicated with the first base drainage ditch 10. The first platform intercepting drain 3 penetrates through the landslide body 1 in the extending direction of the first path-based drainage ditch 10, and two ends of the first platform intercepting drain 3 are respectively communicated with the outside intercepting drains 2. One end of a plurality of first drain pipes 4 is respectively communicated with the first platform intercepting drain 3 and embedded in the landslide body 1 on one side of the first base drain 10 away from the first platform intercepting drain 3, and the plurality of first drain pipes 4 are arranged side by side in the extending direction of the first platform intercepting drain 3, and a first drain hole 41 is arranged on the peripheral wall of each first drain pipe 4.
In the landslide mass drainage system, the boundary outer catch basins 2 are built around the periphery of the landslide mass 1, so that rainwater is prevented from entering cracks of the landslide mass 1. Meanwhile, the accumulated water in the landslide body 1 flows into the first drainage pipe 4 through the first drainage hole 41 of the first drainage pipe 4 of the landslide body drainage system of the embodiment, and then flows into the outdoor intercepting ditch 2 through the first platform intercepting ditch 3, so that the accumulated water in the landslide body 1 can be discharged. Moreover, two ends of the outside intercepting ditch 2 are respectively communicated with the first road-based drainage ditch 10, so that rainwater and accumulated water collected by the outside intercepting ditch 2 are drained and discharged through the first road-based drainage ditch 10. Therefore, the landslide body drainage system can effectively ensure that accumulated water in the landslide body 1 is drained, and can effectively prevent the landslide body 1 from seeping rainwater to cause instability, so that damage to a road is avoided, and maintenance cost of the road is reduced.
The second platform intercepting drain 5 penetrates through the landslide body 1 in the extending direction of the first path of base drainage drain 10, and two ends of the second platform intercepting drain 5 are respectively communicated with the outside intercepting drain 2. One end of each of the second water drainage pipes 6 is communicated with the second platform intercepting drain 5 and embedded in the landslide body 1 on one side, far away from the first path-based drainage drain 10, of the second platform intercepting drain 5, the second water drainage pipes 6 are arranged side by side in the extending direction of the second platform intercepting drain 5, and a second water drainage hole 61 is formed in the peripheral wall of each of the second water drainage pipes 6. The accumulated water in the landslide body 1 flows into the second water drainage pipe 6 through the second water drainage hole 61 of the second water drainage pipe 6 and then flows into the outside intercepting ditch 2 through the second platform intercepting ditch 5, so that the accumulated water in the landslide body 1 can be further discharged.
The one end setting that the landslide body 1 is close to the highway is passed to first way base escape canal 10 of this embodiment, and second way base escape canal 11 extends along the extending direction of first way base escape canal 10, and second way base escape canal 11 is located the outside of landslide body 1, and second way base escape canal 11 is outer arranging the drainage to area water, prevents that surface gathered water from getting into 1 crack of landslide body. On the extension direction of the landslide body 1 towards the highway, the first platform intercepting drain 3 is located at the middle part of the landslide body 1, and the second platform intercepting drain 5 is arranged close to the first road-based drainage ditch 10, so that accumulated water in the whole landslide body 1 is effectively drained, and the phenomenon of instability of rainwater infiltrated into the landslide body 1 is effectively prevented.
The first drain pipe 4 of this embodiment is the cavity ring canal, and the first end and the first platform catch basin 3 of first drain pipe 4 are linked together, and the second port of first drain pipe 4 is blockked up has geotechnological cloth 43, and the first drain pipe 4 has been seted up the exterior parcel of perisporium of first drain hole 41 and has geotechnological cloth 42 to can prevent that earth from getting into in the first drain pipe 4, cause stifled tub drainage unsmooth. The second drain pipe 6 is a hollow ring pipe, the first end of the second drain pipe 6 is communicated with the second platform intercepting ditch 5, the second port of the second drain pipe 6 is blocked with geotextile 63, and the outer surface of the peripheral wall of the second drain pipe 6, which is provided with the second drain hole 61, is wrapped with geotextile 62, so that soil can be prevented from entering the second drain pipe 6, and the blockage of the pipe and the unsmooth drainage can be prevented. Specifically, the first drain pipe 4 and the second drain pipe 6 are PVC pipes, the peripheral wall of the first drain pipe 4, on which the first drain hole 41 is provided, is disposed near the second end of the first drain pipe 4, and the peripheral wall of the second drain pipe 6, on which the second drain hole 61 is provided, is disposed near the second end of the second drain pipe 6. The plurality of first drain holes 41 are provided in a quincunx shape on the peripheral wall of the first drain pipe 4, and the plurality of second drain holes 61 are provided in a quincunx shape on the peripheral wall of the second drain pipe 6.
The outer intercepting ditch 2 of this embodiment includes the arc ring section 21 and the ladder section 22 that are connected, and the one end that the ladder section 22 was kept away from to the arc ring section 21 is linked together with first way base escape canal 10, and the one end that the ladder section 22 kept away from the arc ring section 21 is linked together with first way base escape canal 10, and the both ends of first platform intercepting ditch 3 are linked together with arc ring section 21 and ladder section 22 respectively. The first platform intercepting drain 3 of the present embodiment includes a straight extension 31 and an inclined extension 32 connected to each other, the straight extension 31 extends in the extending direction of the first path-based drain 10 and penetrates the first side of the sliding mass 1, and the inclined extension 32 is disposed to be inclined with respect to the straight extension 31 toward the first path-based drain 10 and penetrates the second side of the sliding mass 1. One end of the straight extension section 31 far away from the inclined section 32 is communicated with the step section 22, and one end of the inclined section 32 far away from the straight extension section 31 is communicated with the arc ring section 21.
In the landslide mass drainage system, the boundary outer catch basins 2 are built around the periphery of the landslide mass 1, so that rainwater is prevented from entering cracks of the landslide mass 1. Meanwhile, the second road base drainage ditch 11 is located outside the landslide body 1, and the second road base drainage ditch 11 conducts drainage and drainage on road area water to be discharged outwards, so that accumulated road surface water is prevented from entering cracks of the landslide body 1. Moreover, accumulated water in the landslide body 1 far away from one end of the road flows into the first drainage pipe 4 through the first drainage hole 41 of the first drainage pipe 4 and then flows into the outdoor intercepting ditch 2 through the first platform intercepting ditch 3, so that the accumulated water in the landslide body 1 far away from one end of the road can be discharged. Meanwhile, the accumulated water in the landslide body 1 close to the other end of the highway flows into the second water drainage pipe 6 through the second water drainage hole 61 of the second water drainage pipe 6 and then flows into the outside intercepting ditch 2 through the second platform intercepting ditch 5, so that the accumulated water in the landslide body 1 close to the other end of the highway can be discharged. In addition, the two ends of the outside intercepting ditch 2 are respectively communicated with the first road-based drainage ditch 10, so that rainwater and accumulated water collected by the outside intercepting ditch 2 are drained and discharged through the first road-based drainage ditch 10. Therefore, the landslide body drainage system can effectively ensure that accumulated water in the landslide body 1 is drained, and can effectively prevent the landslide body 1 from seeping rainwater to cause instability, so that damage to a road is avoided, and maintenance cost of the road is reduced.
The embodiment of the method for reinforcing the landslide body comprises the following steps:
referring to fig. 1 to 9, the method for reinforcing a landslide body includes a local slope leveling step S1, a monitoring point arrangement step S2, an outside cutoff ditch construction step S3, an anti-slide pile construction step S4, a first oblique drainage construction step S5, a second oblique drainage construction step S6, a retaining wall construction step S7, a first platform cutoff ditch construction step S8, a second platform cutoff ditch construction step S9, a landslide body surface greening step S10, a first foundation ditch construction step S11, and a second foundation ditch construction step S12, and is specifically implemented as follows.
Firstly, a slope local leveling step S1 is executed to level the slope of the slip mass 1 at the position where the drilling hole of the slide-resistant pile 7 is located, so as to form a working surface. Meanwhile, slope leveling is carried out on the landslide body 1 at the position of the monitoring point, so that the landslide body 1 at the position of the monitoring point is stable.
Subsequently, a monitoring point arrangement step S2 is executed, and a plurality of monitoring points are provided on the sliding mass 1, and the monitoring points are used for acquiring physical and mechanical parameters of the sliding mass 1. The physical mechanical parameters of the sliding mass 1 comprise physical mechanical parameters of the initial state of the sliding mass 1 and physical mechanical parameters of the sliding mass 1 after deformation and softening, and the physical mechanical parameters comprise volume weight, cohesive force, internal friction angle, tensile strength, elastic modulus and Poisson ratio. Specifically, the monitoring points are arranged on a relatively complete soil body, and whether the landslide body 1 slides downwards or not is mainly monitored in a concrete pile mode. In addition, a monitoring point can be arranged outside the sliding mass 1, and whether the sliding mass 1 slides downwards or not can be further accurately monitored.
Further, an outside intercepting drain building step S3 is executed, and an outside intercepting drain 2 is built around the periphery of the landslide body 1, so that rainwater is effectively prevented from entering cracks of the landslide body 1.
Still further, an anti-slide pile construction step S4 is performed, drilling a plurality of drill holes in the vertical direction through the landslide body 1 and extending to the stable ground 13 below the landslide body 1, the plurality of drill holes being arranged side by side in the extending direction of the road; placing a steel reinforcement cage in each drill hole and pouring concrete to form an anti-slide pile 7, wherein the steel reinforcement cage is embedded in the anti-slide pile 7, so that the structural strength of the anti-slide pile 7 is improved; the cap beam 8 is sleeved at the free end of the anti-slide piles 7, which is far away from the stable stratum 13 and protrudes out of the slide body 1, and the cap beam 8 enables the anti-slide piles 7 to form a supporting and blocking row, so that the reinforcing and stabilizing capacity of the anti-slide piles 7 on the slide body 1 is greatly enhanced; a reinforcing rib 14 is embedded in the free end surface of each slide pile 7, and the exposed end surface of the reinforcing rib 14 is provided with a cross-shaped groove 141, thereby enhancing the structural strength of the free end of the slide pile 7. Specifically, the drilling hole is formed by adopting percussion drilling mud and dry drilling of a rotary drilling rig, the mechanical construction is realized, the construction efficiency is high, and the safety risk of construction operators can be effectively reduced. Whereas in the direction of extension of the landslide body 1 towards the road, the anti-slide piles 7 are arranged close to the road.
Still further, the first elevation drainage construction step S5 and the second elevation drainage construction step S6 are performed, thereby ensuring that accumulated water in the landslide body 1 can be drained. The first oblique drainage construction step S5 includes: the plurality of first drainage pipes 44 are embedded into the landslide body 1, the plurality of first drainage pipes 44 are arranged side by side in the extending direction of the road, and the first drainage hole 41 is formed in the peripheral wall of each first drainage pipe 4. The second oblique drainage construction step S6 includes: the plurality of second water discharging pipes 6 are embedded into the landslide body 1, the plurality of second water discharging pipes 6 are arranged side by side in the extending direction of the road, and a second water discharging hole 61 is formed in the peripheral wall of each second water discharging pipe 6.
Specifically, the first drain pipe 4 of this embodiment is a hollow circular pipe, and the first oblique drainage construction step S5 further includes: before first drain pipe 4 imbeds in the landslide body 1, block up geotechnological cloth 43 at the second port of first drain pipe 4 to the perisporium outward appearance parcel geotechnological cloth 42 of first drain hole 41 is seted up at first drain pipe 4, thereby can prevent that earth from getting into in first drain pipe 4, causes stifled tub drainage unsmooth. In this embodiment, the second drain pipe 6 is a hollow circular pipe, and the second oblique draining step S6 further includes: before the second drainage pipe 6 is embedded into the landslide body 1, the geotextile 63 is blocked at the second port of the second drainage pipe 6, and the geotextile 62 is wrapped on the outer surface of the peripheral wall of the second drainage pipe 6 provided with the second drainage hole 61, so that soil can be prevented from entering the second drainage pipe 6 to cause blockage and unsmooth drainage.
And further executing a retaining wall construction step S7, building the gabion retaining wall 12 at one end of the landslide body 1 close to the road, wherein the gabion retaining wall 12 is arranged in a step shape in the vertical direction, and the gabion retaining wall 12 is in a dry rubble form.
Still further, the first platform catch basin constructing step S8 and the second platform catch basin constructing step S9 are performed. The first platform catch drain construction step S8 includes: the first platform intercepting ditches 3 are built by penetrating through the landslide body 1 in the extending direction of the road, two ends of each first platform intercepting ditch 3 are respectively communicated with the outside intercepting ditches 2, each first platform intercepting ditch 3 is positioned at the first end, close to the road, of each first drainage pipe 4, and the first ends of the first drainage pipes 44 are respectively communicated with the first platform intercepting ditches 3. And the second platform intercepting drain constructing step S9 includes: and a second platform intercepting drain 5 is built by penetrating through the landslide body 1 in the extending direction of the road, two ends of the second platform intercepting drain 5 are respectively communicated with the outside intercepting drains 2, the second platform intercepting drain 5 is positioned at the first end, close to the road, of the second drain pipe 6, and the first ends of the second drain pipes 6 are respectively communicated with the second platform intercepting drain 5. In the extending direction of the landslide body 1 towards the road, the first platform intercepting drain 3 is located in the middle of the landslide body 1, the second platform intercepting drain 5 is arranged close to the retaining wall 12, and two second drain pipes 6 are arranged between two adjacent anti-slide piles 7.
Then, the landslide body surface greening step S10 is performed to perform greening construction on the surface of the landslide body 1, thereby enhancing the stability of the landslide body 1 and improving the beauty of the landslide body 1.
The first road-based gutter construction step S11 is performed before the out-of-limit berm masonry step S3 is performed or after the second platform berm construction step S9 is performed. The first drainage ditch construction step S11 includes: a first road-based drainage ditch 10 is built along the extending direction of a road, the first road-based drainage ditch 10 penetrates through one end of the landslide body 1 close to the road, and two ends of the outside intercepting ditch 2 are respectively communicated with the first road-based drainage ditch 10. The first path of base drainage ditch 10 is used for receiving rainwater and accumulated water collected by the outside intercepting ditch 2, draining and discharging the rainwater and the accumulated water.
The second road-based drain constructing step S12 is performed before the outside cut gutter constructing step S3 is performed or after the first road-based drain constructing step S11 is performed. The second road-based drainage ditch construction step S12 includes: a second road-based drainage ditch 11 is built along the extending direction of the first road-based drainage ditch 10, the second road-based drainage ditch 11 is located outside the landslide body 1, and the second road-based drainage ditch 11 conducts drainage and drainage on water in a road area to be discharged outwards, so that the accumulated water on the road surface is prevented from entering cracks of the landslide body 1.
According to the landslide body reinforcing method, landslide stability checking calculation is carried out according to rock-soil physical mechanical indexes, the landslide body 1 is supported and blocked in the form of the anti-slide piles 7 and the retaining walls 12, the landslide body drainage system is arranged to effectively drain accumulated water in the landslide body 1, and rainwater is prevented from entering cracks of the landslide body 1. The landslide mass reinforcing method can effectively enhance the anti-skid stability of the landslide mass 1, prevent the landslide mass 1 from being unstable, avoid damage to the highway and reduce the maintenance cost of the highway. In addition, the landslide body reinforcing method is high in construction efficiency and low in engineering cost, and the problem that the treatment difficulty is increased due to the fact that the sliding range of the landslide body is expanded in the existing landslide body reinforcing construction process is solved.
The above embodiments are merely preferred examples of the present invention, and not intended to limit the scope of the invention, so that equivalent changes or modifications made based on the structure, characteristics and principles of the invention as claimed should be included in the claims of the present invention.

Claims (10)

1. A landslide body reinforcing method is characterized by comprising an outside intercepting ditch building step, an anti-slide pile construction step, a first oblique drainage construction step, a retaining wall construction step and a first platform intercepting ditch construction step;
the step of building the outside intercepting ditch comprises the following steps: building an external intercepting ditch around the periphery of the landslide body;
the construction steps of the slide-resistant pile comprise: drilling a plurality of drill holes in a vertical direction through the landslide body and extending to a stable stratum below the landslide body, wherein the plurality of drill holes are arranged side by side in the extending direction of the road; placing a steel reinforcement cage in each drill hole and pouring concrete to form an anti-slide pile; a cap beam is sleeved at the free end of the anti-slide pile, which is far away from the stable stratum and protrudes out of the landslide body;
the first oblique drainage construction step comprises the following steps: embedding a plurality of first drainage pipes into the landslide body, wherein the first drainage pipes are arranged side by side in the extending direction of the road, and a first drainage hole is formed in the peripheral wall of each first drainage pipe;
the retaining wall construction step comprises: building a retaining wall at one end of the landslide body close to the road, wherein the retaining wall is arranged in a step shape in the vertical direction;
the first platform catch basin construction step includes: and a first platform catch basin penetrates through the landslide body in the extending direction of the road to build the first platform catch basin, two ends of the first platform catch basin are respectively communicated with the outside catch basin, the first platform catch basin is positioned at the first end of the first drainage pipe close to the road, and the first ends of the first drainage pipes are respectively communicated with the first platform catch basin.
2. The method of claim 1, wherein:
before the retaining wall construction step is executed, the landslide body reinforcing method further comprises a second oblique drainage construction step, and the second oblique drainage construction step comprises the following steps: embedding a plurality of second drain pipes into the landslide body, wherein the plurality of second drain pipes are arranged side by side in the extending direction of the road, and a second drain hole is formed in the peripheral wall of each second drain pipe;
after the first platform catch basin construction step is executed, the landslide body reinforcement method further comprises a second platform catch basin construction step, and the second platform catch basin construction step comprises: and a second platform catch basin is built by penetrating the landslide body in the extending direction of the road, two ends of the second platform catch basin are respectively communicated with the outside catch basins, the second platform catch basin is positioned at the first end, close to the road, of the second drain pipe, and the first ends of the second drain pipes are respectively communicated with the second platform catch basins.
3. The method of claim 2, wherein:
before the step of building the outside intercepting drain or after the step of constructing the second platform intercepting drain, the method for reinforcing the landslide body further comprises a step of constructing a first path-based drainage drain;
the construction steps of the first road-based drainage ditch comprise: and a first road-based drainage ditch is built along the extending direction of the highway, the first road-based drainage ditch penetrates through one end, close to the highway, of the landslide body, and two ends of the outside intercepting ditch are respectively communicated with the first road-based drainage ditch.
4. The method of claim 3, wherein:
before the step of building the outside intercepting drain or after the step of constructing the first road-based drainage ditch is executed, the landslide body reinforcing method further comprises a step of constructing a second road-based drainage ditch;
the second road base drainage ditch construction step comprises the following steps: and building a second road-based drainage ditch along the extending direction of the first road-based drainage ditch, wherein the second road-based drainage ditch is positioned outside the landslide body.
5. The method of claim 1, wherein:
the first drain pipe is a hollow ring pipe, and the first oblique drainage construction step further comprises: before the first drainage pipe is embedded into the landslide body, the second port of the first drainage pipe is blocked with geotextile, and the geotextile is wrapped on the outer surface of the peripheral wall of the first drainage pipe, which is provided with the first drainage hole.
6. The method of claim 2, wherein:
the second drain pipe is a hollow ring pipe, and the second oblique drainage construction step further comprises: before the second drain pipe is embedded into the landslide body, the second port of the second drain pipe is blocked with geotextile, and the outer surface of the peripheral wall of the second drain pipe, which is provided with the second drain hole, is wrapped with geotextile.
7. The method of claim 1, wherein:
the construction steps of the slide-resistant pile further comprise: and a reinforcing rib is embedded into the free end face of each anti-slide pile, and the exposed end face of each reinforcing rib is provided with a cross groove.
8. The method of claim 2, wherein:
the landslide body orientation on the extending direction of highway, first platform catch basin is located the middle part of the landslide body, second platform catch basin is close to the barricade setting, and adjacent two be provided with two between the friction pile the second drain pipe.
9. The method of reinforcing a sliding mass according to any one of claims 1 to 8, characterized in that:
before the step of building the outside cutoff ditch, the landslide body reinforcing method further comprises a step of arranging monitoring points, wherein the step of arranging the monitoring points comprises the following steps of: a plurality of monitoring points are arranged on the landslide body, and the monitoring points are used for acquiring physical and mechanical parameters of the landslide body;
the physical and mechanical parameters of the sliding mass comprise the physical and mechanical parameters of the initial state of the sliding mass and the physical and mechanical parameters of the sliding mass after deformation and softening, and the physical and mechanical parameters comprise volume weight, cohesive force, internal friction angle, tensile strength, elastic modulus and Poisson ratio.
10. The method of claim 9, wherein:
before the step of arranging the monitoring points is executed, the method for reinforcing the sliding mass further comprises a step of locally leveling the slope surface, and the step of locally leveling the slope surface comprises the following steps of: leveling the slope surface of the landslide body at the position of the drilled hole; and carrying out slope surface leveling on the landslide body at the position of the monitoring point.
CN202110273887.1A 2021-03-12 2021-03-12 Landslide body reinforcing method Pending CN113026772A (en)

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