CN109853595A - Cut slope salivary flow ice safeguard structure and method - Google Patents
Cut slope salivary flow ice safeguard structure and method Download PDFInfo
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- CN109853595A CN109853595A CN201910243731.1A CN201910243731A CN109853595A CN 109853595 A CN109853595 A CN 109853595A CN 201910243731 A CN201910243731 A CN 201910243731A CN 109853595 A CN109853595 A CN 109853595A
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- 238000000034 method Methods 0.000 title claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- 239000004575 stone Substances 0.000 claims description 17
- 230000008595 infiltration Effects 0.000 claims description 13
- 238000001764 infiltration Methods 0.000 claims description 13
- 239000004746 geotextile Substances 0.000 claims description 12
- 238000009331 sowing Methods 0.000 claims description 9
- 244000025254 Cannabis sativa Species 0.000 claims description 6
- 239000004677 Nylon Substances 0.000 claims description 6
- 229920001778 nylon Polymers 0.000 claims description 6
- 239000004567 concrete Substances 0.000 claims description 4
- GNFTZDOKVXKIBK-UHFFFAOYSA-N 3-(2-methoxyethoxy)benzohydrazide Chemical compound COCCOC1=CC=CC(C(=O)NN)=C1 GNFTZDOKVXKIBK-UHFFFAOYSA-N 0.000 claims description 3
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims description 3
- 239000011178 precast concrete Substances 0.000 claims description 3
- 230000035699 permeability Effects 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 abstract description 4
- 239000002689 soil Substances 0.000 description 6
- 230000008014 freezing Effects 0.000 description 5
- 238000007710 freezing Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000476 body water Anatomy 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 238000009863 impact test Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 210000003296 saliva Anatomy 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
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Abstract
The present invention relates to side slope protection technical fields, disclose a kind of cut slope salivary flow ice safeguard structure and method, cut slope salivary flow ice safeguard structure includes side slope slopes, sewer, deep layer aqueduct, gravel insulating layer, arched framework, gutter and rubble french drain, the sewer is arranged from top to bottom in the side slope slope surface, the deep layer aqueduct is arranged inside the Slope body, the deep layer aqueduct outlet connects the bottom of the sewer, backfill gravel insulating layer is concordant to slope surface after the sewer applies, the arched framework is arranged in the side slope slope surface, the gutter and the rubble french drain are arranged at the slope foot under the side slope slopes.Cut slope salivary flow ice safeguard structure of the invention and method are additionally arranged deep layer aqueduct, gravel insulating layer, sewer and rubble french drain in side slope, by excluding moisture in side slope in time, reducing side slope body moisture content, a possibility that salivary flow ice formation is reduced from source and scale are realized.
Description
Technical field
The present invention relates to Geotechnical Engineering fields, more particularly to a kind of cut slope salivary flow ice safeguard structure and side
Method.
Background technique
In the slope engineering of cold district, since underground reservoir has been truncated in execavated rockmass, the water in water-bearing layer
Freeze in winter when seeping, until stretching from side slope surface forms salivary flow ice to road width, makes vehicle slip, traffic safety is caused to endanger
Evil.Meanwhile cut slope water-bearing layer can also freeze in certain depth.In the process, work of the moisture in the area Wei Dong in freezing force
It can be migrated to freezing front under, assemble, congeal into ice.For cut slope since outside water is penetrated into, water replenishment is sufficient, therefore
Ice crystal, ice band, ice lens etc. are formed in frozen soil, make slope soil that frost heave occur.When temperature increases, ice-out Cheng Shui, such as
Melt water cannot quickly be discharged, and biggish excess pore water pressure will be formed in slopes, and the decline of Rock And Soil shearing strength is caused to lead to side
There is slump in slope.
Had by the way of more in engineering practice at present poly- ice ditch and gear ramparp, gear ice wall and poly- cirque, gear ice foot column,
Subdrainage measure etc..These protection types are often handled after salivary flow ice is formed, and passive protection is belonged to, main to solve
Certainly salivary flow ice not can solve the harm of salivary flow ice side slope to the harm problem of road.
Therefore, the advantage for how integrating the prior art combines the harm for solving salivary flow ice side slope, road, is road
The new demand of moat side slope salivary flow ice protection.
Summary of the invention
The object of the present invention is to provide a kind of cut slope salivary flow ice safeguard structures, can effectively reduce salivary flow ice pair
The harm of side slope and road.
To achieve the above object, the present invention designed by cut slope salivary flow ice safeguard structure include side slope slopes, sewer,
Deep layer aqueduct, gravel insulating layer, arched framework, gutter and rubble french drain, the sewer is in the side slope slope surface from upper
And lower setting, the deep layer aqueduct are arranged inside the Slope body, the deep layer aqueduct outlet connects the sewer
Bottom, backfill gravel insulating layer is concordant to slope surface after the sewer applies, and the arched framework is arranged in the side slope slope surface,
The gutter and the rubble french drain are arranged at the slope foot under the side slope slopes.
Preferably, the sewer is longitudinal every one of 6~8m setting, the sewer along side slope slopes described in road
From top to bottom through top of the slope to bottom of slope and bottom of trench ratio of slope it is consistent with the side slope slopes.
Preferably, the cross section of the sewer is the rectangle of wide 1~1.5m, deep 1.2~1.5m, the sewer packet
Sewer graded broken stone and sewer double-wall corrugated pipe are included, the sewer graded broken stone is laid on the outer of the sewer double-wall corrugated pipe
It encloses, the sewer double-wall corrugated pipe is the bellows of φ 175mm.
Preferably, the deep layer aqueduct tilts down and level side with upper and lower 2.5~3m of spacing, from inside to outside
It is arranged in the side slope slopes to the form at 10 °~15 °, the outlet of the deep layer aqueduct and the sewer bottom use
The connection of threeway head.
Preferably, water seepage hole is distributed on the tube wall of the deep layer aqueduct, the water seepage hole is in the tube wall
Circumferential direction on be uniformly distributed, be in staggered distribution in the axial direction, the horizontal spaces between two circle water seepage holes are 5~6mm, institute in the axial direction
It states and wraps up 2 layers with nylon wire on tube wall and bound with galvanized wire.
Preferably, the arched framework is arranged, institute on the surface of the side slope slopes from top of the slope to bottom of slope array
The height for stating arched framework is 2~2.5m, and longitudinal pitch is 2~3m.
Preferably, the arched framework is by the cast-in-place cast-in-place frame at fenestra shape of C25 concrete, in the cast-in-place frame
Cover sowing seed of sowing grass seeds by duster after earthing up.
Preferably, the gutter is the rectangular grooves of high 0.8m, width 1m, is built by C20 precast concrete block.
Preferably, the rubble french drain is the rectangular grooves of high 1.5~2m, wide 1~1.5m, and the rubble is blind
Ditch includes that cross section is L-shaped cast-in-place basis, french drain double-wall corrugated pipe, french drain graded broken stone and infiltration geotextiles, the infiltration
Geotextiles are longitudinally located at the cast-in-place basis inside along the vertical direction, and the french drain double-wall corrugated pipe is arranged in the cast-in-place basis
Bottom, the french drain graded broken stone be filled in outside the french drain double-wall corrugated pipe it is described it is cast-in-place basis with infiltration geotextiles it
Between.
Preferably, the mass area ratio of infiltration geotextiles (7D) is 300~500g/m2, vertical to permeate
Coefficient >=1 × 10-2cm/s。
The object of the present invention is to provide a kind of cut slope salivary flow ice means of defences, can effectively reduce salivary flow ice pair
The harm of side slope and road.
To achieve the above object, the cut slope salivary flow ice means of defence designed by the present invention, comprising the following steps: step
Cut slope is excavated smooth, construction lofting by design ratio of slope by a；Step b, along cut slope slopes longitudinal direction every 6~8m in institute
The sewer that side slope slope surface excavates wide 1~1.5m, deep 1.2~1.5m from top to bottom is stated, the ratio of slope and slope surface of the sewer are protected
It holds consistent；Step c makees deep layer aqueduct in the sewer bottom application, the deep layer aqueduct with upper and lower 2.5~3m of spacing, by interior
The form tilted down outward from the horizontal by 10 °~15 ° is arranged in the side slope slopes, and the deep layer aqueduct goes out
Mouth is connect with the sewer bottom using threeway head；Step d is laid with sewer double-wall corrugated pipe in the sewer bottom, and backfill is seeped
Ditch graded broken stone；It is concordant to slope surface to backfill gravel insulating layer outside the sewer by step e；Step f, in the gravel insulating layer
The cast-in-place frame for applying arched framework outside, sowing seed of sowing grass seeds by duster after covering ridging in cast-in-place frame；Step g, in the Slope
The slope foot of body applies rubble french drain；Step h applies rubble french drain top trackside gutter.
The beneficial effects of the present invention are: cut slope salivary flow ice safeguard structure of the invention and method use active protection
Salivary flow ice theory is additionally arranged deep layer aqueduct, gravel insulating layer, sewer and rubble french drain, by excluding side in time in side slope
Moisture, reduction side slope body moisture content, realize a possibility that salivary flow ice formation is reduced from source and scale in slope；It is additionally arranged
Arched framework, gravel insulating layer and sewer can play the role of insulation, reduce the side slope depth of freezing, while passing through depth
Layer aqueduct and sewer exclude the intracorporal moisture in slope in time, avoid slope soil that frost heave occurs, ensure that the stabilization of side slope
Property.
Detailed description of the invention
Fig. 1 is the elevational schematic view of the cut slope salivary flow ice safeguard structure of the preferred embodiment of the present invention.
Fig. 2 is the sectional schematic diagram of the sewer of the cut slope salivary flow ice safeguard structure in Fig. 1.
Fig. 3 is the sectional schematic diagram of the deep layer aqueduct of the cut slope salivary flow ice safeguard structure in Fig. 1.
Fig. 4 is the schematic diagram of the arched framework of the cut slope salivary flow ice safeguard structure in Fig. 1.
Fig. 5 is the elevational schematic view of the rubble french drain of the cut slope salivary flow ice safeguard structure in Fig. 1.
Each part numbers are as follows in figure: side slope slopes 1, sewer 2 (wherein, sewer graded broken stone 2A, sewer double-wall corrugated pipe
2B), deep layer aqueduct 3 (wherein, tube wall 3A, water seepage hole 3B, nylon wire 3C, galvanized wire 3D), gravel insulating layer 4, arched framework 5
(wherein, cast-in-place frame 5A, ridging 5B, sowing seed 5C), gutter 6, rubble french drain 7 (wherein, cast-in-place basis 7A, french drain double-walled wave
Line pipe 7B, french drain graded broken stone 7C, infiltration geotextiles 7D).
Specific embodiment
The following further describes the present invention in detail with reference to the accompanying drawings and specific embodiments.
In view of the above-mentioned problems existing in the prior art, the present invention provides a kind of cut slope salivary flow ice safeguard structure and side
Method, for solving cold district cut slope salivary flow ice protection question.
As shown in fig. 1, the cut slope salivary flow ice safeguard structure of the preferred embodiment of the present invention, including side slope slopes 1, infiltration
Ditch 2, deep layer aqueduct 3, gravel insulating layer 4, arched framework 5, gutter 6 and rubble french drain 7,1 surface of side slope slopes is from top to bottom
One of sewer 2 is set, deep layer aqueduct 3 is set inside side slope slopes 1, the outlet of deep layer aqueduct 3 connects 2 bottom of sewer.Sewer 2 is applied
It is concordant to slope surface that gravel insulating layer 4 is backfilled after work, 1 surface of side slope slopes is arranged arched framework 5 and protects, and gutter 6 is arranged at slope foot
And rubble french drain 7.By excluding moisture in side slope in time, reducing side slope body moisture content, realize reduces saliva stream from source
A possibility that ice formation and scale, to effectively reduce the harm of salivary flow ice side slope and road.
Side slope slopes 1 are cut slope, and ratio of slope is 1:1~1:1.75.
Sewer 2 is along cut slope longitudinal direction every one of 6~8m setting, from top to bottom through top of the slope to bottom of slope, 2 ditch of sewer
Base slope rate is consistent with slope surface.Fig. 2 is please referred to, 2 cross section of sewer uses rectangle, wide 1~1.5m, deep 1.2~1.5m.
Sewer 2 is made of sewer graded broken stone 2A, sewer double-wall corrugated pipe 2B, and sewer graded broken stone 2A is laid on sewer double-wall corrugated pipe
The periphery of 2B, sewer double-wall corrugated pipe 2B are the bellows of φ 175mm.The parameter of sewer double-wall corrugated pipe 2B is as follows: ring stiffness >
8kN/m2, falling weight impact test (20 DEG C) TIR≤10%, density≤1550kg/m3, creep ratio≤2.5, operating pressure >
0.25MPa。
Fig. 3 is please referred to, deep layer aqueduct 3 is with upper and lower 2.5~3m of spacing and tilts down and level side from inside to outside
It is arranged in side slope slopes 1 to the form at 10 °~15 °, realizes the function of the single slope drainage to outside side slope in side slope.Deep layer water guide
The outlet of pipe 3 is connect with 2 bottom of sewer using threeway head.Deep layer aqueduct 3 is poly- using the HDPE of outer diameter 116mm, internal diameter 100mm
Water seepage hole 3B is distributed on tube wall 3A in vinyl chloride stereoplasm tube.Water seepage hole 3B is uniformly distributed in the circumferential, is staggered in the axial direction point
Cloth, the horizontal space between two circle water seepage hole 3B is 5~6mm in the axial direction, uses nylon wire 3C to wrap up 2 layers on tube wall 3A, is used in combination
Galvanized wire 3D binding is solid.Nylon wire 3C is 200 mesh nylon wires, and galvanized wire 3D is No. 14 galvanized wires.
Gravel insulating layer 4 is compacted be formed by the good gravel of gradation.
4 are please referred to, arched framework 5 is set to the surface of side slope slopes 1, is arranged in array from top of the slope to bottom of slope.Arch
The height of shape skeleton 5 is 2~2.5m, 2~3m of longitudinal pitch.Arched framework 5 is by the cast-in-place cast-in-place frame at fenestra shape of C25 concrete
Sow grass seeds by duster sowing seed 5C after 5A, the interior ridging 5B of fenestra.
Gutter 6 is the rectangular grooves for being set to side slope slope foot, a height of 0.8m, width 1m.It is built by C20 precast concrete block.
Fig. 5 is please referred to, rubble french drain 7 is rectangular grooves, high 1.5~2m, wide 1~1.5m.Rubble french drain 7 is arranged
In 6 lower part of gutter, by the cast-in-place basis 7A of C25 concrete, french drain double-wall corrugated pipe 7B, french drain graded broken stone 7C and infiltration geotextiles 7D group
At.French drain double-wall corrugated pipe 7B is arranged in the bottom of cast-in-place basis 7A, fills out in the cast-in-place basis 7A outside french drain double-wall corrugated pipe 7B
French drain graded broken stone 7C is filled, infiltration geotextiles 7D is located at 7 inside of rubble french drain.
Infiltration geotextiles 7D is longitudinally located at along the vertical direction on the inside of cast-in-place basis 7A, mass area ratio for 300~
500g/m2, tensile strength >=10kN/m, elongation at break < 50%, tearing strength >=0.5kN, CBR bursting strength >=3.5kN/
M, vertical permeability coefficient >=1 × 10-2cm/s。
The cut slope salivary flow ice means of defence of the preferred embodiment of the present invention, comprising the following steps:
Cut slope is excavated smooth, construction lofting by design ratio of slope by step a；
Step b excavates sewer 2 on 1 surface of side slope slopes along 1 longitudinal direction of cut slope slopes every 6~8m from top to bottom,
Wide 1~1.5m, deep 1.2~1.5m, 2 base slope rate of groove are consistent with slope surface；
Step c makees deep layer aqueduct 3 in 2 bottom application of sewer, with upper and lower 2.5~3m of spacing, from inside to outside tilts down and water
Square to the form arrangement at 10 °~15 °, the outlet of deep layer aqueduct 3 uses threeway head to connect with 2 bottom of sewer；
Step d applies 2 bottom sewer double-wall corrugated pipe 2B of sewer, backfills sewer graded broken stone 2A；
Step e, backfill gravel insulating layer 4 are concordant to slope surface；
Step f normally applies the cast-in-place frame 5A of arched framework 5, and sow grass seeds by duster sowing seed 5C after the 5B that earths up in fenestra；
Step g applies side slope slope foot rubble french drain 7；
Step h applies 7 top trackside gutter 6 of rubble french drain.
Compared with prior art, cut slope salivary flow ice safeguard structure of the invention and method have the advantage that
(1) with existing poly- ice ditch and gear ramparp, gear ice wall and poly- cirque, gear ice foot column etc. passive-types salivary flow ice safeguard structure
It compares, cut slope salivary flow ice safeguard structure of the invention and method use active protection salivary flow ice theory, increase in side slope
If deep layer aqueduct, gravel insulating layer, sewer and rubble french drain, contained by excluding moisture in side slope in time, reducing side slope body
Water rate realizes a possibility that salivary flow ice formation is reduced from source and scale.
(2) compared with existing subdrainage measure, cut slope salivary flow ice safeguard structure of the invention and method are added
Arched framework, gravel insulating layer and sewer can play the role of insulation, reduce the side slope depth of freezing, pass through simultaneously
Deep layer aqueduct and sewer exclude the intracorporal moisture in slope in time, avoid slope soil that frost heave occurs, ensure that the steady of side slope
It is qualitative.
(3) calculated according to engineering practice and scene, compared with traditional passive type salivary flow ice safeguard structure, cutting of the invention
Side slope salivary flow ice safeguard structure and method make salivary flow ice occur probability decline 80% or more, ice trouble scale reduce 90% with
On, while project cost reduces by 20% or more；Compared with existing subdrainage measure, cut slope salivary flow ice protection of the invention
Structure and method make the side slope depth of freezing reduce 30%, and slope soil occurs frost heave and reduces 80%.
In conclusion cut slope salivary flow ice safeguard structure and method of the invention prevents and treats existing salivary flow ice, side slope
The routine techniques such as protection, subdrainage, structural thermal insulation have carried out integrated innovation, integrate the advantage of the prior art, take into account salivary flow ice
Ice trouble prevention and treatment and cutting slope defending performance.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
Limitations on the scope of the patent of the present invention therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention
Protect range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of cut slope salivary flow ice safeguard structure, it is characterised in that: including side slope slopes (1), sewer (2), deep layer water guide
(3), gravel insulating layer (4), arched framework (5), gutter (6) and rubble french drain (7) are managed, the sewer (2) is in the Slope
Body (1) surface is arranged from top to bottom, and deep layer aqueduct (3) setting is internal in the side slope slopes (1), the deep layer water guide
Pipe (3) outlet connects the bottom of the sewer (2), and backfill gravel insulating layer (4) is concordant to slope surface after the sewer (2) applies, institute
It states side slope slopes (1) surface and the arched framework (5) is set, the gutter (6) and the rubble french drain (7) are arranged on the side
At slope foot under slope slopes (1).
2. cut slope salivary flow ice safeguard structure according to claim 1, it is characterised in that: the sewer (2) is along road
The side slope slopes (1) are longitudinal every one of 6~8m setting, and the sewer (2) is from top to bottom through top of the slope to bottom of slope and bottom of trench
Ratio of slope and the side slope slopes (1) are consistent.
3. cut slope salivary flow ice safeguard structure according to claim 2, it is characterised in that: the sewer (2) it is cross-section
Face is the rectangle of wide 1~1.5m, deep 1.2~1.5m, and the sewer (2) includes that sewer graded broken stone (2A) and sewer are double-wall corrugated
It manages (2B), the sewer graded broken stone (2A) is laid on the periphery of the sewer double-wall corrugated pipe (2B), the sewer double-walled wave
Line pipe (2B) is the bellows of φ 175mm.
4. cut slope salivary flow ice safeguard structure according to claim 1, it is characterised in that: the deep layer aqueduct (3)
With upper and lower 2.5~3m of spacing, tilts down be arranged in the Slope from the horizontal by 10 °~15 ° of form from inside to outside
On body (1), the outlet of the deep layer aqueduct (3) is connect with the sewer (2) bottom using threeway head.
5. cut slope salivary flow ice safeguard structure according to claim 4, it is characterised in that: the deep layer aqueduct (3)
Tube wall (3A) on be distributed with water seepage hole (3B), the water seepage hole (3B) is uniformly distributed in the circumferential direction of the tube wall (3A),
It is in staggered distribution in axial direction, the horizontal space between two circles water seepage hole (3B) is 5~6mm in the axial direction, is used on the tube wall (3A)
Nylon wire (3C) wraps up 2 layers and is bound with galvanized wire (3D).
6. cut slope salivary flow ice safeguard structure according to claim 1, it is characterised in that: the arched framework (5) exists
The surface of the side slope slopes (1) arranges that the height of the arched framework (5) is 2~2.5m from top of the slope to bottom of slope array, indulges
It is 2~3m to spacing；The arched framework (5) is by the cast-in-place cast-in-place frame (5A) at fenestra shape of C25 concrete, the cast-in-place frame
Sowing seed (5C) is sowed grass seeds by duster after covering ridging (5B) in (5A).
7. cut slope salivary flow ice safeguard structure according to claim 1, it is characterised in that: the gutter (6) is height
The rectangular grooves of 0.8m, width 1m, are built by C20 precast concrete block.
8. cut slope salivary flow ice safeguard structure according to claim 1, it is characterised in that: the rubble french drain (7) is
The rectangular grooves of high 1.5~2m, wide 1~1.5m, the rubble french drain (7) include cross section be L-shaped cast-in-place basic (7A),
French drain double-wall corrugated pipe (7B), french drain graded broken stone (7C) and infiltration geotextiles (7D), the infiltration geotextiles (7D) are along vertical
Direction is longitudinally located on the inside of cast-in-place basic (7A), and the french drain double-wall corrugated pipe (7B) is arranged in cast-in-place basic (7A)
Bottom, the french drain graded broken stone (7C) be filled in cast-in-place basic (7A) of the french drain double-wall corrugated pipe (7B) outside with
Between the infiltration geotextiles (7D).
9. cut slope salivary flow ice safeguard structure according to claim 8, it is characterised in that: the infiltration geotextiles (7D)
Mass area ratio be 300~500g/m2, vertical permeability coefficient >=1 × 10-2cm/s。
10. a kind of method using cut slope salivary flow ice safeguard structure as claimed in any one of claims 1-9 wherein, including
Following steps:
Cut slope is excavated smooth, construction lofting by design ratio of slope by step a；
Step b is longitudinally excavated every 6~8m on side slope slopes (1) surface wide by 1 from top to bottom along cut slope slopes (1)
The sewer (2) of~1.5m, deep 1.2~1.5m, the ratio of slope of the sewer (2) are consistent with slope surface；
Step c, in the sewer (2), bottom application is made deep layer aqueduct (3), the deep layer aqueduct (3) with upper and lower spacing 2.5~
3m, it tilts down be arranged on the side slope slopes (1) from the horizontal by 10 °~15 ° of form from inside to outside, the deep layer
The outlet of aqueduct (3) is connect with the sewer (2) bottom using threeway head；
Step d is laid with sewer double-wall corrugated pipe (2B) in the sewer (2) bottom, backfills sewer graded broken stone (2A)；
It is concordant to slope surface to backfill gravel insulating layer (4) in the sewer (2) outside by step e；
Step f applies the cast-in-place frame (5A) of arched framework (5) outside the gravel insulating layer (4), in cast-in-place frame (5A)
Sowing seed (5C) is sowed grass seeds by duster after covering ridging (5B)；
Step g applies rubble french drain (7) in the slope foot of the side slope slopes (1)；
Step h applies rubble french drain (7) top trackside gutter (6).
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| CN201910243731.1A CN109853595A (en) | 2019-03-28 | 2019-03-28 | Cut slope salivary flow ice safeguard structure and method |
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| CN201910243731.1A CN109853595A (en) | 2019-03-28 | 2019-03-28 | Cut slope salivary flow ice safeguard structure and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113250211A (en) * | 2021-05-07 | 2021-08-13 | 北京市政路桥股份有限公司 | Construction method for highway cutting slope in permafrost region |
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