CN113931202A - Anti-skid drainage system containing hydrophilic minerals for large landslide and construction method - Google Patents
Anti-skid drainage system containing hydrophilic minerals for large landslide and construction method Download PDFInfo
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- CN113931202A CN113931202A CN202111136365.3A CN202111136365A CN113931202A CN 113931202 A CN113931202 A CN 113931202A CN 202111136365 A CN202111136365 A CN 202111136365A CN 113931202 A CN113931202 A CN 113931202A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
- E02D17/207—Securing of slopes or inclines with means incorporating sheet piles or piles
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/04—Pipes or fittings specially adapted to sewers
- E03F3/046—Open sewage channels
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/23—Dune restoration or creation; Cliff stabilisation
Abstract
The invention relates to the technical field of slope treatment, in particular to an anti-skid drainage system for a large landslide containing hydrophilic minerals. Anti-skidding drainage system, including preceding row of stake, drainage device and back row of stake catchments, drainage device includes the drainage base, drainage base level sets up in the shallow layer of landslide contains hydrophilic mineral slider, and its upper end is equipped with a plurality of first drainage holes, and its side is equipped with the drainage channel that the level runs through its setting, first filter layer first aggregate layer that permeates water the second filter layer with the aggregate layer that permeates water of second all is located the upper end of drainage base, the bottom side of drainage base first filter layer is close to one side of preceding row of stake and the upper end of first filter layer all is equipped with the clay bed course. The anti-skidding drainage system for the large landslide containing the hydrophilic minerals can provide enough resistance to ensure the stability of the whole landslide, and has shallow drainage to prevent the flow skidding of a shallow soil body.
Description
Technical Field
The invention relates to the technical field of slope treatment, in particular to an anti-skid drainage system for a large landslide containing hydrophilic minerals and a construction method.
Background
The prevention and control of large-scale consequent landslide can be related to in the mountain area highway construction process, and the circular friction pile of mechanical pore-forming is adopted mostly, because mechanical pore-forming size is restricted, circular friction pile diameter is 1.8 meters, and large-scale consequent landslide often adopts double row pile. In the southwest area of China, the formation of the Jurassic system and the triassic system contains hydrophilic clay minerals, the shallow surface layer of the slope and the side slope contains a large amount of hydrophilic clay minerals in a certain range, the soil layer containing the hydrophilic clay minerals is quickly softened when meeting water in rainfall and is quickly changed from hard plastic into soft plastic-flow plastic state, the shear strength is extremely low, the measures of double-row piles aiming at the large consequent landslide containing the hydrophilic minerals are very effective for ensuring the integral stability of the landslide, but the stability of the shallow part containing the hydrophilic clay minerals cannot be well ensured, the deformation of the shallow surface layer slope body has cracks, rainwater can permeate into the deep sliding belt along the joint cracks, the strength of the deep sliding belt is reduced, and the integral stability of the deep sliding body is not facilitated.
At present, many researches on the structure of an anti-slide pile have been made on rainfall-induced landslide, and patent documents CN209585069N, CN106759274B and CN110453699B all propose drainage anti-slide piles suitable for rainfall-induced landslide, and the above improved anti-slide piles mostly show that a hollow structure inside forms a water collection space, a large number of water collection holes communicated with a slope body exist on the outer side, and water collected fully needs to be drained by a water pump, so that a redundant space is needed for placing a water pump inside or outside. Firstly, the gliding thrust of the large-scale forward landslide is extremely high, and the shearing resistance and bending resistance of the anti-slide pile are greatly reduced due to the hollow internal water collecting space with the diameter of 1.8 meters; secondly, a water pump needs to be installed for draining water in the water collecting space, circuits can arrive in remote open mountainous areas without happening, and the solar device cannot adapt to the situation in continuous rainy weather, and at the moment, rainwater is collected in a slope body, so that the rainwater is difficult to realize; thirdly, the major problem of the large landslide containing hydrophilic minerals after being treated by the double rows of piles in the rainfall period is that the soil body in a shallow soft plastic-flow plastic state slips, and the problems of drainage and shallow slip cannot be well solved only by the hollow middle part of the anti-slip pile, so that the anti-slip pile with the hollow upper inner part is not suitable for drainage anti-slip treatment of the large landslide containing hydrophilic minerals.
Disclosure of Invention
In view of the above, the invention provides an anti-skid drainage system containing hydrophilic minerals for a large landslide and a construction method thereof.
The invention provides an anti-skid drainage system for a large landslide containing hydrophilic minerals, which comprises front-row piles, a water collecting and drainage device and rear-row piles, wherein the front-row piles and the rear-row piles are vertically arranged on the landslide at intervals in sequence, the lower ends of the front-row piles and the rear-row piles are embedded into deep bedrock of the landslide, the water collecting and drainage device is arranged in a hydrophilic mineral-containing slide body on a shallow layer of the landslide and is positioned on the rear side of the front-row piles, the water collecting and drainage device comprises a drainage base, a first filter layer, a first water-permeable aggregate layer, a second filter layer and a second water-permeable aggregate layer, the drainage base is horizontally arranged in the hydrophilic mineral-containing slide body on the shallow layer of the landslide, the upper end of the drainage base is provided with a plurality of first drainage holes, the side surface of the drainage holes is provided with drainage channels which horizontally penetrate through the drainage base, the first drainage holes are communicated with the drainage channels, and the first filter layer, the first water-permeable aggregate layer and the second water-permeable aggregate layer are arranged on the upper end of the drainage holes, The second filter layer and the second permeable aggregate layer are located at the upper end of the drainage base and are distributed in sequence from outside to inside, and clay cushion layers are arranged on the bottom side of the drainage base, one side, close to the front row of piles, of the first filter layer and the upper end of the first filter layer.
The drainage base is vertically arranged on the drainage base, the upper space of the drainage base is divided into four mutually independent chambers, each chamber is internally provided with the first filter layer, the first water-permeable aggregate layer, the second filter layer and the second water-permeable aggregate layer which are sequentially distributed from outside to inside, and each side plate of the cross baffle is uniformly provided with a plurality of second drainage holes.
Furthermore, the drainage base is provided with at least four drainage channels arranged at intervals along the horizontal direction, the upper end of the drainage base is provided with drain hole assemblies corresponding to the four drainage channels one by one, each drain hole assembly is composed of a plurality of first drain holes, and the first drain holes are arranged in parallel with and communicated with the corresponding drainage channels.
Further, the upper end of the drainage base is provided with a third filter layer.
Further, the third filter layer is made of 1-2 layers of dense gauze or non-woven fabric, and the thickness of the third filter layer is 0.03-0.05 m.
Furthermore, the first filter layer is made of 3-4 layers of dense gauze or non-woven fabric, and the thickness of the first filter layer is 0.03-0.05 m.
Furthermore, the second filter layer is made of 2-3 layers of dense gauze or non-woven fabric, and the thickness of the second filter layer is 0.03-0.05 m.
Further, the first water-permeable aggregate layer 33 is filled with fine sand and has a thickness of 0.3 to 0.5 m.
Further, the second permeable aggregate layer 35 is made of a mixture of crushed stone and coarse sand, and has a thickness of 0.3 to 0.5 m.
A construction method of the anti-skid drainage system is characterized by comprising the following steps:
s1, selecting a construction area of the target landslide, cleaning sundries in the construction area, determining the bottom boundary of a shallow layer hydrophilic mineral-containing sliding body and the position of a deep sliding belt in the target landslide, and then determining the construction positions and the embedding depths of front row piles and rear row piles;
s2, drilling holes at the construction positions of the front row piles and the rear row piles, cleaning the concrete in the holes and in the cast-in-place pile body, hoisting a reinforcement cage for cast-in-place manufacturing, and completing the construction of the front row piles and the rear row piles after the casting is finished;
s3, after the front row of piles and the rear row of piles are maintained, performing site construction of a water collecting and draining device, determining the construction position of a draining base according to the position of the bottom boundary of the hydrophilic mineral-containing sliding body in the shallow layer, excavating grooves on the slope surface of the target landslide 10 along the transverse direction of the slope surface, wherein the grooves transversely extend to drainage ditches at two sides of the target landslide, and excavating depth is up to the bottom boundary of the hydrophilic mineral-containing sliding body in the shallow layer;
s4, cleaning sundries at the bottom of the tank, paving a bottom clay cushion layer, leveling, paving a reinforcement cage for manufacturing a drainage base and a cross baffle, arranging PVC (polyvinyl chloride) pipes or PE (polyethylene) pipes at the arrangement positions of the drainage channel, the first drainage hole and the second drainage hole, performing cast-in-place manufacturing, and finishing the construction of the drainage base and the cross baffle after the pouring is finished;
s5, after the drainage base and the cross baffle are maintained, laying a third filter layer and clay close to the front row of piles at the upper end of the drainage base, and finishing the construction of clay cushion layers at the bottom and the side edges of the drainage base; according to the construction thickness of the first water-permeable aggregate layer and the second water-permeable aggregate layer, the positions of the second filter layer and the first filter layer are determined, a temporary partition plate is laid at the construction position of the second filter layer and the first filter layer, broken stones and coarse sand are used for filling the second water-permeable aggregate layer to a preset thickness, the second filter layer is arranged, then fine sand is used for filling the first water-permeable aggregate layer to the preset thickness, an external first filter layer is arranged, finally, clay is used for capping and compacting, and the construction of the water collecting and draining device is finished.
The technical scheme provided by the invention has the beneficial effects that: the anti-skidding drainage system for the large landslide containing the hydrophilic minerals can provide enough resistance to ensure the stability of the whole landslide, and has shallow drainage to prevent the flow skidding of a shallow soil body. Its advantage lies in following several aspects:
1. the anti-skid drainage structure adopts double rows of anti-skid piles and a water collecting and drainage structure which are separated in construction, the water collecting and drainage structure is positioned between the double rows of piles and is close to the front row of piles, and the anti-skid structure and the water collecting and drainage structure form complementation in space, structure and function;
2. the water collecting and draining device forms a water collecting space with three sides impermeable and one side allowing water to permeate through by arranging clay cushions on the upper part, the right side and the lower part;
3. the filter screens at the three layers and the permeable aggregates at the two layers prevent the blockage of the water collecting and draining structure; the drainage structure at the bottom and the cross-shaped baffle plate of the drainage structure at the upper part are cast together, so that the integral strength of the structure is ensured;
4. the pervious aggregate is divided into four parts by the cross-shaped baffle, the parts are communicated with each other through the pervious holes on the baffle, and the vertical holes on the bottom drainage structure are distributed on the water collecting space divided into the four parts by the cross-shaped baffle, so that the independent pervious of each space is ensured, and the pervious of the whole body can be coordinated;
5. the anti-skid drainage system is simple in construction, mature in technology, rapid, convenient and low in cost, and can meet deep anti-skid requirements and prevent the flow of superficial parts through shallow drainage.
Drawings
FIG. 1 is a schematic view of the water collecting and draining device according to the present invention;
FIG. 2 is a schematic view of the skid resistant drainage system of the present invention;
FIG. 3 is a partial schematic view of the water collecting and draining device according to the present invention;
FIG. 4 is a schematic view of the construction of the drainage base of the present invention;
FIG. 5 is a schematic structural view of the drainage base and the cross baffle of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be further described with reference to the accompanying drawings.
Referring to fig. 1-5, an embodiment of the present invention provides an anti-skid drainage system for a large landslide containing hydrophilic minerals, including a front row of piles 1, a water collecting drainage device 3 and a rear row of piles 2, wherein the front row of piles 1 and the rear row of piles 2 are vertically arranged on the landslide 10 sequentially at intervals in a front-to-rear manner, the lower ends of the front row of piles are embedded in deep bedrock 6 of the landslide 10, the water collecting drainage device 3 is arranged in a shallow layer hydrophilic mineral-containing gliding mass 11 of the landslide 10 and is located at the rear side of the front row of piles 1, the water collecting drainage device 3 includes a drainage base 36, a first filter layer 32, a first permeable aggregate layer 33, a second filter layer 34 and a second permeable aggregate layer 35, the drainage base 36 is horizontally arranged in the shallow layer hydrophilic mineral-containing gliding mass 4 of the landslide 10, the upper end thereof is provided with a plurality of first drainage holes 361, the side surface thereof is provided with a drainage channel 37 horizontally penetrating through the drainage hole, the first water drainage holes 361 are communicated with the water drainage channel 37, the first filter layer 32, the first water-permeable aggregate layer 33, the second filter layer 34 and the second water-permeable aggregate layer 35 are all located at the upper end of the water drainage base 36 and are distributed from outside to inside in sequence, and clay cushion layers 31 are arranged on the bottom side of the water drainage base 36, one side of the first filter layer 32 close to the front row of piles 1 and the upper end of the first filter layer 32.
In the present invention, in practical application, a plurality of front piles 1 and rear piles 2 may be provided, and a plurality of front piles 1 and rear piles 2 are distributed in a quincunx shape. The drainage base 36 is a rectangular structure, but in practical application, the drainage base 36 can be designed into other geometric structures according to requirements, and is horizontally arranged in the shallow layer hydrophilic mineral-containing slide body 11 of the landslide 10, and the left side and the right side of the drainage base respectively extend to the corresponding sides of the landslide 10. Drainage ditches are arranged on the left side and the right side of the landslide 10, and the drainage channels 37 on the drainage base 36 are communicated with the drainage ditches. Specifically, the drainage base 36 is poured by adopting a square steel reinforcement cage, the thickness of the drainage base is 0.8-1.6m, the aperture of the drainage channel 37 is 50-100mm, the aperture of the first drainage hole 361 is 5-10mm, and a PVC pipe or a PE pipe can be used as a support for pouring and molding. The first filter layer 32 is tightly attached to the clay cushion 31 and the left side shallow slope, which allows only moisture to permeate. The first filter layer 32 is made of 3-4 layers of dense gauze or non-woven fabric, the aperture of the first filter layer is smaller than that of the first water-permeable aggregate layer 33, the thickness of the first filter layer is 0.03-0.05m, and soil particles, fine sand and small stones can be effectively prevented from penetrating through the first filter layer. The first water-permeable aggregate layer 33 is made of fine sand filled in, and has a thickness of 0.3-0.5m, and functions to allow free passage of water. The second filter layer 34 is made of 2-3 layers of dense gauze or non-woven fabric, is smaller than the material aperture of the first water-permeable aggregate layer 33 and the second water-permeable aggregate layer 35, has a thickness of 0.03-0.05m, and further prevents soil particles, fine sand and small stones from penetrating through. The second water-permeable aggregate layer 35 is filled with a mixture of crushed stone and coarse sand, has a thickness of 0.3-0.5m, and functions to allow moisture to freely pass through. The clay mat 31 has a thickness of 0.08-0.10m, which serves to prevent the loss of water collected by the shallow water collecting means. According to the anti-sliding drainage system, the front row of piles 1 and the rear row of piles 2 have the function of effectively realizing deep anti-sliding, the first filter layer 32, the first water-permeable aggregate layer 33, the second filter layer 34 and the second water-permeable aggregate layer 35 form a water collecting part, water in a shallow slope body is collected, and the collected water sequentially passes through the first filter layer 32, the first water-permeable aggregate layer 33, the second filter layer 34, the second water-permeable aggregate layer 35 and the third water-permeable aggregate layer 39, then flows into the drainage channel 37 through the first drainage hole 361 on the drainage base 36 and then is drained to the drainage ditch.
In the above embodiment, the drainage device further includes a cross baffle 38, the cross baffle 38 is vertically disposed on the drainage base 36, the upper space of the drainage base 36 of the cross baffle 38 is divided into four independent chambers, each chamber is provided with the first filter layer 32, the first water-permeable aggregate layer 33, the second filter layer 34 and the second water-permeable aggregate layer 35 which are sequentially distributed from outside to inside, and each side plate of the cross baffle 38 is uniformly provided with a plurality of second drainage holes 381.
In the invention, the pervious aggregate is divided into four parts by the cross baffle 38, and the parts are communicated with each other through the second drainage holes 381 on the cross baffle 38, so that independent water penetration of each space is ensured, and the water penetration can be integrally coordinated. It should be noted that the first filter layer 32, the first water-permeable aggregate layer 33, the second filter layer 34 and the second water-permeable aggregate layer 35 in each chamber have the same size to ensure the same water permeability in each chamber. In the invention, the cross baffle 38 is formed by casting together with the bottom drainage base 36 by a cross-shaped reinforcement cage, so as to ensure the structural strength of the water collecting and drainage device 3. The aperture of the second drainage hole 381 is 5-10mm, and a PVC pipe or a PE pipe is also used for supporting, pouring and molding.
In the above embodiment, the drainage base 36 is provided with at least four drainage channels 37 arranged at intervals along the horizontal direction, the upper end of the drainage base is provided with a drainage hole assembly corresponding to the four drainage channels 37 one by one, the drainage hole assembly is composed of a plurality of first drainage holes 361, and the plurality of first drainage holes 361 are arranged in parallel with and communicated with the corresponding drainage channels 37.
In the present invention, the greater the number of the drain passages 37 and the first drain holes 361, the better the drainage effect. Specifically, the four sets of drain hole assemblies are divided into four parts by the cross baffle 38, and the four parts are distributed in the water collecting space, so as to ensure the drainage effect of each chamber. Each group of drain hole assemblies are provided with 6 first drain holes 361, and the 6 first drain holes 361 are uniformly distributed, but in practical application, the number of the first drain holes 361, the drain hole assemblies and the drain channels 37 can be increased as required.
In the above embodiment, the upper end of the drain base 36 is provided with the third filter layer 39.
In the invention, the third filter layer 39 is made of 1-2-mesh gauze or non-woven fabric, is smaller than the material aperture of the first water-permeable aggregate layer 33, has a thickness of 0.03-0.05m, and is used for carrying out secondary filtration on the water-permeable aggregate and the clay fine sand to prevent the water-permeable aggregate and the clay fine sand from entering the drainage base to block the drainage channel.
The construction method of the anti-skid drainage system containing the hydrophilic mineral landslide 10 specifically comprises the following steps:
s1, selecting a construction area of the target landslide 10, cleaning sundries in the construction area, determining the bottom boundary of a shallow layer hydrophilic mineral-containing sliding body 11 and the position of a deep sliding belt in the target landslide 10 by adopting a measurement lofting method, and then determining the construction positions and the embedding depths of the front row of piles 1 and the rear row of piles 2;
s2, drilling holes at the construction positions of the front row piles 1 and the rear row piles 2, cleaning the concrete in the holes and pouring the pile body to ensure the bottom cleaning and pile forming quality, hoisting a reinforcement cage for cast-in-place manufacturing, completing the pouring of the pile body concrete at one time, and completing the construction of the front row piles 1 and the rear row piles 2 after the pouring is finished;
s3, after the pile body maintenance and quality detection of the front row of piles 1 and the rear row of piles 2 meet the requirements, performing field construction of the water collecting and draining device 3, determining the construction position of the draining base 36 according to the position of the bottom boundary of the slide body 11 containing hydrophilic minerals on the shallow layer, excavating grooves on the slope surface of the target slide slope 10 along the transverse direction of the slope surface, wherein the grooves transversely extend to drainage ditches at two sides of the target slide slope 10, and the excavating depth is up to the bottom boundary of the slide body 11 containing hydrophilic minerals on the shallow layer;
s4, cleaning sundries at the bottom of the tank, paving a bottom clay cushion layer, leveling, paving a reinforcement cage for manufacturing the drainage base 36 and the cross baffle 38, arranging PVC (polyvinyl chloride) pipes or PE (polyethylene) pipes at the arrangement positions of the drainage channel 37, the first drainage hole 361 and the second drainage hole 381, performing cast-in-place manufacturing, and finishing the construction of the drainage base 36 and the cross baffle 38 after the pouring is finished;
s5, after the drainage base 36 and the cross baffle 38 are maintained, laying a third filter layer and clay close to the front row of piles 1 at the upper end of the drainage base 36, and finishing the construction of the clay cushion layer 31 at the bottom and the side of the drainage base 36; according to the construction thickness of the first permeable aggregate layer 33 and the second permeable aggregate layer 35, the positions of the second filter layer 34 and the first filter layer 32 are determined, a temporary partition plate is paved at the construction positions of the second filter layer 34 and the first filter layer 32, broken stones and coarse sand are used for filling the second permeable aggregate layer 35 to a preset thickness, the second filter layer 34 is arranged, fine sand is used for filling the first permeable aggregate layer 33 to the preset thickness, the outer first filter layer 32 is arranged, finally, clay is used for capping and compacting, and the construction of the water collecting and draining device 3 is finished.
In this document, the terms front, back, upper and lower are used to define the components in the drawings and the positions of the components relative to each other, and are used for clarity and convenience of the technical solution. It is to be understood that the use of the directional terms should not be taken to limit the scope of the claims.
The features of the embodiments and embodiments described herein above may be combined with each other without conflict.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The utility model provides an anti-skidding drainage system that contains large-scale landslide of hydrophilic mineral, its characterized in that, includes preceding row of stake, catchment drainage device and back row of stake, preceding row of stake with back row of stake is in proper order around spaced vertical setting on the landslide, its lower extreme all imbeds the deep basement rock of landslide, catchment drainage device sets up in the shallow layer of landslide contains in the hydrophilic mineral slider, and is located the rear side of preceding row of stake, catchment drainage device includes drainage base, first filter layer, first aggregate layer, second filter layer and the second aggregate layer that permeates water, drainage base level sets up in the shallow layer of landslide contains the hydrophilic mineral slider, and its upper end is equipped with a plurality of first drain holes, and its side is equipped with the drainage channel that the level runs through its setting, a plurality of first drain hole all with drainage channel intercommunication, first filter layer, The first permeable aggregate layer, the second filter layer and the second permeable aggregate layer are all located at the upper end of the drainage base and are distributed from outside to inside in sequence, and clay cushion layers are arranged on the bottom side of the drainage base, one side of the first filter layer, which is close to the front row of piles, and the upper end of the first filter layer.
2. The anti-skid drainage system for the large landslide containing the hydrophilic minerals as claimed in claim 1, further comprising a cross baffle vertically disposed on the drainage base, wherein the upper space of the drainage base of the cross baffle is divided into four independent chambers, each chamber is provided with the first filter layer, the first water permeable aggregate layer, the second filter layer and the second water permeable aggregate layer sequentially distributed from outside to inside, and each side plate of the cross baffle is uniformly provided with a plurality of second drainage holes.
3. The anti-skid drainage system for large landslides containing hydrophilic minerals as claimed in claim 1, wherein the drainage base is provided with at least four of the drainage channels arranged at intervals in the horizontal direction, and the upper end thereof is provided with a drainage hole assembly corresponding to the four drainage channels one to one, the drainage hole assembly is composed of a plurality of the first drainage holes, and the plurality of the first drainage holes are arranged in parallel with and communicated with the corresponding drainage channels.
4. The anti-skid drainage system for the large landslide containing hydrophilic minerals, according to claim 1, wherein the upper end of the drainage base is provided with a third filter layer.
5. The anti-skid drainage system for large landslides containing hydrophilic minerals as claimed in claim 4, wherein the third filter layer is made of 1-2 layers of dense mesh gauze or non-woven fabric and has a thickness of 0.03-0.05 m.
6. The anti-skid drainage system for large landslides containing hydrophilic minerals as claimed in claim 1, wherein the first filter layer is made of 3-4 layers of dense mesh gauze or non-woven fabric and has a thickness of 0.03-0.05 m.
7. The anti-skid drainage system for large landslides containing hydrophilic minerals as claimed in claim 1, wherein the second filter layer is made of 2-3 layers of dense mesh gauze or non-woven fabric and has a thickness of 0.03-0.05 m.
8. The anti-skid drainage system for large landslides containing hydrophilic minerals as claimed in claim 1, wherein the first water-permeable aggregate layer 33 is filled with fine sand and has a thickness of 0.3-0.5 m.
9. The anti-skid drainage system for large landslides containing hydrophilic minerals as claimed in claim 1, wherein the second water-permeable aggregate layer 35 is filled with a mixture of crushed stone and coarse sand and has a thickness of 0.3-0.5 m.
10. A method of constructing a skid resistant drainage system as set forth in any one of claims 1 to 9, comprising the steps of:
s1, selecting a construction area of the target landslide, cleaning sundries in the construction area, determining the bottom boundary of a shallow layer hydrophilic mineral-containing sliding body and the position of a deep sliding belt in the target landslide, and then determining the construction positions and the embedding depths of front row piles and rear row piles;
s2, drilling holes at the construction positions of the front row piles and the rear row piles, cleaning the concrete in the holes and in the cast-in-place pile body, hoisting a reinforcement cage for cast-in-place manufacturing, and completing the construction of the front row piles and the rear row piles after the casting is finished;
s3, after the front row of piles and the rear row of piles are maintained, performing site construction of a water collecting and draining device, determining the construction position of a draining base according to the position of the bottom boundary of the hydrophilic mineral-containing sliding body in the shallow layer, excavating grooves on the slope surface of the target landslide 10 along the transverse direction of the slope surface, wherein the grooves transversely extend to drainage ditches at two sides of the target landslide, and excavating depth is up to the bottom boundary of the hydrophilic mineral-containing sliding body in the shallow layer;
s4, cleaning sundries at the bottom of the tank, paving a bottom clay cushion layer, leveling, paving a reinforcement cage for manufacturing a drainage base and a cross baffle, arranging PVC (polyvinyl chloride) pipes or PE (polyethylene) pipes at the arrangement positions of the drainage channel, the first drainage hole and the second drainage hole, performing cast-in-place manufacturing, and finishing the construction of the drainage base and the cross baffle after the pouring is finished;
s5, after the drainage base and the cross baffle are maintained, laying a third filter layer and clay close to the front row of piles at the upper end of the drainage base, and finishing the construction of clay cushion layers at the bottom and the side edges of the drainage base; according to the construction thickness of the first water-permeable aggregate layer and the second water-permeable aggregate layer, the positions of the second filter layer and the first filter layer are determined, a temporary partition plate is laid at the construction position of the second filter layer and the first filter layer, broken stones and coarse sand are used for filling the second water-permeable aggregate layer to a preset thickness, the second filter layer is arranged, then fine sand is used for filling the first water-permeable aggregate layer to the preset thickness, an external first filter layer is arranged, finally, clay is used for capping and compacting, and the construction of the water collecting and draining device is finished.
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| CN202111136365.3A CN113931202B (en) | 2021-09-27 | 2021-09-27 | Anti-skid drainage system containing hydrophilic minerals for large landslide and construction method |
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| CN202111136365.3A CN113931202B (en) | 2021-09-27 | 2021-09-27 | Anti-skid drainage system containing hydrophilic minerals for large landslide and construction method |
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| CN110016922A (en) * | 2019-05-14 | 2019-07-16 | 河北工业大学 | A kind of novel integral draining anti-slide pile structure and its construction method |
| CN110453699A (en) * | 2019-08-23 | 2019-11-15 | 河北工业大学 | A kind of the draining anti-slide pile structure and its construction method of " rice " type stake core |
| CN111622240A (en) * | 2020-06-02 | 2020-09-04 | 四川大学 | Trapezoidal toe-added drainage slide-resistant pile and construction method thereof |
| CN111691438A (en) * | 2020-06-22 | 2020-09-22 | 河北工业大学 | Anti-skidding-drainage comprehensive treatment method for landslide of large-scale accumulation body |
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2021
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206015689U (en) * | 2016-08-26 | 2017-03-15 | 中铁二院工程集团有限责任公司 | Whole slide large landslide joint reinforcement is constructed |
| CN110016922A (en) * | 2019-05-14 | 2019-07-16 | 河北工业大学 | A kind of novel integral draining anti-slide pile structure and its construction method |
| CN110453699A (en) * | 2019-08-23 | 2019-11-15 | 河北工业大学 | A kind of the draining anti-slide pile structure and its construction method of " rice " type stake core |
| CN111622240A (en) * | 2020-06-02 | 2020-09-04 | 四川大学 | Trapezoidal toe-added drainage slide-resistant pile and construction method thereof |
| CN111691438A (en) * | 2020-06-22 | 2020-09-22 | 河北工业大学 | Anti-skidding-drainage comprehensive treatment method for landslide of large-scale accumulation body |
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| CN113931202B (en) | 2023-06-30 |
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