CN209412838U - A kind of Cut Slopes of Expansive Soil structure - Google Patents
A kind of Cut Slopes of Expansive Soil structure Download PDFInfo
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- CN209412838U CN209412838U CN201821737048.0U CN201821737048U CN209412838U CN 209412838 U CN209412838 U CN 209412838U CN 201821737048 U CN201821737048 U CN 201821737048U CN 209412838 U CN209412838 U CN 209412838U
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Abstract
The utility model relates to a kind of Cut Slopes of Expansive Soil structures, draining sewer, the rubble drainage blanket of bottom and the road surface structare layer of side including intercepting blind drain at the top of cut slope, interior outside is arranged in, the inside and outside draining sewer inside, cut slope ground and top are equipped with two cloth, one film water proof geotextiles sealing, it is circuited sequentially from bottom to top on the rubble drainage blanket and is laid with TGXG, expansion soil layer, white lime layer, it is equipped with planting soil on the outer slope of the cut slope, plants herbaceous plant in planting soil.The Cut Slopes of Expansive Soil structure of the utility model makes edge slope structure that can prevent slope erosion from avoiding soil erosion but also beautify slope surface environment, structure construction low cost, and the overall stability of side slope can be effectively ensured.
Description
Technical field
The utility model relates to highway engineering fields, more particularly to a kind of Cut Slopes of Expansive Soil structure.
Background technique
In highway engineering in China, it is frequently encountered this geological condition of Cut Slopes of Expansive Soil, swelled ground has water suction
The characteristics of expansion, dehydration shrinkage, significant drying shrinkage bulking deformation will cause cut slope deformation, displacement, cracking and landslide.
Currently, the common Cut Slopes of Expansive Soil processing method in China has mortar rubble masonry pavement, retaining wall, antiskid
Stake, anchor pole method, root pile and cement lime stabilized soil stake method.Mortar rubble masonry pavement, retaining wall, friction pile, anchor pole method and
Sinking By The Method of Rooting provides skid resistance by the globality of raising side slope for side slope slopes to achieve the purpose that reinforcing side slope.Behavior of Hardened Cement Paste
On the one hand lime soil pile method, cement lime stabilized soil stake provide part skid resistance for side slope, the cement, lime in another aspect pile body are to swollen
Swollen soil plays improving effect, thus to reinforce cut slope.
But these traditional Cut Slopes of Expansive Soil processing methods, not only increase the excavation and digging soil of cut slope, band
Carry out serious soil erosion problem, causes side slope integrated environment inaccurate coordination, while construction cost is higher, and certain methods are such as
The stability of mortar rubble masonry pavement and anchor pole method slope treatment is poor.
Utility model content
The purpose of this utility model is to lead to highway side for since shallow-layer Moisture Damage causes the deformation of swelled ground drying shrinkage bulking
Hill wash collapses phenomenon, proposes a kind of Cut Slopes of Expansive Soil structure, to solve the Failure of Shallow of Cut Slopes of Expansive Soil, prevents from expanding
Cut slope deformation, displacement and the landslide that native drying shrinkage bulking deformation causes.
To achieve the above object, the utility model provides a kind of Cut Slopes of Expansive Soil structure, including is arranged in cutting
The internal drainage sewer and outer draining sewer in outside in the cut slope is arranged in, described in setting in intercepting blind drain at the top of side slope
The rubble drainage blanket of cut slope bottom, the road surface structare layer that the cut slope side is set, it is the intercepting blind drain, interior
Fill rubble in draining sewer and outer draining sewer, the internal drainage sewer and outer draining sewer inside, cut slope ground and
Top is equipped with two cloth, one film water proof geotextiles sealing, circuits sequentially laying geotechnique on the rubble drainage blanket from bottom to top
Grid, expansion soil layer, white lime layer, expansion soil layer, the expansion soil layer inside are equipped with lateral rubble permeable layer, the cutting side
It is equipped with planting soil on the outer slope on slope, plants herbaceous plant in the planting soil.
Preferably, the section width of the intercepting blind drain is 0.5m, is highly 1m；The internal drainage sewer and outer draining are seeped
The width of ditch is 0.5m, is highly 0.5m；The rubble drainage blanket with a thickness of 40cm, width 4m.
Preferably, the laying width of the TGXG be 3.5m, the lap width of adjacent two width TGXG be greater than or
Equal to 200mm；The width of the expansion soil layer is 3.8m, and outside is 30cm wider than TGXG, the expansion soil layer after grinding compacting
With a thickness of 20cm, compactness should be greater than or equal to the 93% of light-duty compacting criteria；The white lime layer with a thickness of 1cm；Institute
State lateral rubble permeable layer width be 0.5m, be layered laying with a thickness of 20cm.
Preferably, the road surface structare layer includes the sub-surface of bottom, the surface layer that the sub-surface top is arranged in
And the drain gutter in the surface layer is set.
Preferably, the drain gutter uses cast-in-place concrete structure, and width 0.4m is highly 0.5m, slope foot
The longitudinal slope of gutter is identical as road surface longitudinal slope.
Based on the above-mentioned technical proposal, the utility model has the advantages that:
The Cut Slopes of Expansive Soil structure of the utility model on the one hand due to the intensity and plastic deformation characteristic of TGXG,
Along with white lime is to the improving effect of swelled ground, the swelled ground for enabling the flexible support soil body to resist itself is followed in Climate Dryness/Wetness
The lower expansive force generated of ring effect, guarantees the local stability of swelled ground；On the other hand, the flexible support soil body is one by geotechnological lattice
The entirety that grid and white lime connect, along with its combined drainage system makes it can be steady for a long time under Climate Dryness/Wetness ringing
It is fixed.
In addition, the flexible support soil body inhibits swelled ground significantly to deform from Beijing South Maxpower Technology Co. Ltd, shallow-layer side slope a part can be resisted
Sliding force, and combined drainage system is the flexible supporting structure soil body itself and bottom expansion soil base, rear portion expensive soil cutting
Moisturizing antiseepage provides best condition, and the overall stability of Cut Slopes of Expansive Soil is made to be guaranteed.
The existing supporting file of flexible supporting structure side slope, AsA -GSH cycle, and play the role of slope soil moisturizing antiseepage, it is effectively sharp
With swelled ground, while excavation and digging soil amount are reduced, prevent slope erosion, avoids that soil erosion occurs.It is anti-by the grass planting of slope surface
Shield, improves and has beautified slope surface environment, landscape along coordination.
For the Cut Slopes of Expansive Soil structure of the utility model compared with traditional approach, construction cost is lower, can be effectively
Cut slope deformation, displacement and the landslide for preventing the deformation of swelled ground drying shrinkage bulking from causing, prevent the shallow of Cut Slopes of Expansive Soil
Damage layer.
Detailed description of the invention
Attached drawing described herein is used to provide a further understanding of the present invention, and is constituted part of this application,
The exemplary embodiment of the utility model and the description thereof are used to explain the utility model, does not constitute to the improper of the utility model
It limits.In the accompanying drawings:
Fig. 1 is Cut Slopes of Expansive Soil structural schematic diagram；
Wherein, 1~intercepting blind drain；2~two cloth, one film water proof geotextiles sealing；3~lateral rubble permeable layer；4~ripe stone
Grieshoch；5~TGXG；6~expansion soil layer；7~rubble drainage blanket；8~internal drainage sewer；9~planting soil；10~outlet
Water sewer；11~sub-surface；12~drain gutter；13~surface layer.
Specific embodiment
Below by drawings and examples, the technical solution of the utility model is described in further detail.
The utility model provides a kind of Cut Slopes of Expansive Soil structure, as shown in Figure 1, the utility model is shown
A kind of preferred embodiment.The Cut Slopes of Expansive Soil structure includes following three modules:
Flexible support module: cut slope is backbreak 4m, grade of side slope 1:1.5, place Min layers TGXG 5, expansion soil layer
6, white lime 4, expansion soil layer 6, in this order, circulation is laid with, and grinding compacting forms flexible supporting structure；Drain module: including
The inside and outside draining sewer of top of the slope intercepting blind drain 1, the lateral permeable layer in flexible support back, rubble drainage blanket 7, cutting and drain
Gutter 12；Protection module: two cloth of top of the slope, one film water proof geotextiles sealing 2 and slope plants protective layer, wherein flexible supporting structure
In TGXG 5 geotextiles such as geonet, glass fiber grid also can be used.
Surface water drainage system: prevented by top of the slope intercepting blind drain 1, two cloth of top of the slope, one film water proof geotextiles sealing 2, slope surface grass planting
Shield and drain gutter 12 form.Wherein top of the slope intercepting blind drain 1 is used to surface water behind the row of cutting slope；Two cloth of top of the slope, one film water proof soil
Work cloth sealing 2 and slope surface grass planting protective layer carry out treatment on slope every infiltration；Drain gutter 12 is used to intercepting slope surface and road surface
Table water.
Ground water drainage system: by lateral rubble permeable layer 3, rubble drainage blanket 7, cutting internal drainage sewer 8 and outlet
Water sewer 10 forms.Wherein, lateral rubble permeable layer 3, cutting internal drainage sewer 8, for excluding flexible supporting structure behind
Slopes underground water；Rubble drainage blanket 7, lateral rubble permeable layer 3, cutting internal drainage sewer and outer draining sewer 10 are used to exclude
Flexible support slopes underground water；Sewer 10 is drained outside cutting be used to exclude to excavate roadbed permeate the ground water.
Cut Slopes of Expansive Soil structure described in the utility model include be arranged in intercepting blind drain 1 at the top of cut slope,
The internal drainage sewer 8 in outside is set in the cut slope and outer draining sewer 10, the broken of the cut slope bottom is set
Stone drainage blanket 7, the road surface structare layer that the cut slope side is set, the intercepting blind drain 1, internal drainage sewer 8 and outer
Rubble is filled in draining sewer 10, the internal drainage sewer 8 is spread with outer 10 inside of draining sewer, cut slope ground and top
Equipped with two cloth, one film water proof geotextiles sealing 2, circuited sequentially from bottom to top on the rubble drainage blanket 7 be laid with TGXG 5,
Soil layer 6, white lime layer 4, expansion soil layer 6 are expanded, is equipped with lateral rubble permeable layer 3, the cutting side on the inside of the expansion soil layer 6
It is equipped with planting soil 9 on the outer slope on slope, plants herbaceous plant in the planting soil 9.
Wherein, the section width of the intercepting blind drain 1 is 0.5m, is highly 1m, fills rubble in ditch；The internal drainage seeps
The width of ditch 8 and outer draining sewer 10 is 0.5m, is highly 0.5m, and drain sewer channel bottom longitudinal slope and keep with road surface longitudinal slope
Unanimously；The rubble drainage blanket 7 with a thickness of 40cm, width 4m, two layers, every layer of 20cm of blotter point, practice of construction
Want layered rolling closely knit.
Preferably, the laying width of the TGXG 5 be 3.5m, the lap width of adjacent two width TGXG be greater than or
Equal to 200mm, first layer swelled ground is backfilled at the top of TGXG 5；The width of the expansion soil layer 6 is 3.8m, and outside is than soil
6 width 30cm of work grid, expansion soil layer 6 after grinding compacting with a thickness of 20cm, compactness should be greater than or be equal to light-duty compacting mark
Quasi- 93%；The white lime layer 4 with a thickness of 1cm, be layered at the top of first layer backfill swelled ground；The lateral rubble permeable layer
3 width is 0.5m, and with a thickness of 20cm, and the lateral rubble permeable layer backfills first layer rubble on the inside of swelled ground；Foundation
Above-mentioned setting sequence circulation backfill, until being backfilling into road pad side slope top.
Further, it is preferable that the road surface structare layer includes the sub-surface 11 of bottom, is arranged in the sub-surface 11
The surface layer 13 on top and the drain gutter 12 being arranged in the surface layer 13.
Preferably, the drain gutter 12 uses cast-in-place concrete structure, and width 0.4m is highly 0.5m, slope
The longitudinal slope of foot gutter 12 is identical as road surface longitudinal slope.
The Cut Slopes of Expansive Soil structure of the utility model is on the one hand since the intensity of TGXG 5 and plastic deformation are special
Property, along with white lime 4 is to the improving effect of swelled ground, the flexible support soil body is enabled to resist the swelled ground of itself in Climate Dryness
The expansive force generated under wet ringing guarantees the local stability of swelled ground；On the other hand, the flexible support soil body is one by soil
The entirety that work grid 5 and white lime 4 connect, along with its combined drainage system makes its energy under Climate Dryness/Wetness ringing
Steadily in the long term.
In addition, the flexible support soil body inhibits swelled ground significantly to deform from Beijing South Maxpower Technology Co. Ltd, shallow-layer side slope a part can be resisted
Sliding force, and combined drainage system is the flexible supporting structure soil body itself and bottom expansion soil base, rear portion expensive soil cutting
Moisturizing antiseepage provides best condition, and the overall stability of Cut Slopes of Expansive Soil is made to be guaranteed.
The existing supporting file of flexible supporting structure side slope, AsA -GSH cycle, and play the role of slope soil moisturizing antiseepage, it is effectively sharp
With swelled ground, while excavation and digging soil amount are reduced, prevent slope erosion, avoids that soil erosion occurs.It is anti-by the grass planting of slope surface
Shield, improves and has beautified slope surface environment, landscape along coordination.
Cut Slopes of Expansive Soil structure in the utility model can refer to following steps and be constructed:
A, to highway engineering cutting excavation section smooth location, setting-out is measured, measuring goes out Middle Pile of Road, on cutting excavation
The stake of mouth sideline；
B, digging method is indulged using channel-type and carries out cutting earth excavation, until roadbed crest level, and set at the top of cut slope
Intercepting blind drain 1 is set, rubble is filled in intercepting blind drain 1 later, then will be flattened at the top of roadbed with land leveller, scrapes road camber and reserve
Amount of compaction rolls leveling；
C, earth excavation is carried out respectively in the backbreak interior outside of part of cut slope, the internal drainage sewer 8 and outer of constructing respectively
Sewer 10 is drained, the internal drainage sewer 8 and outer 10 bottom longitudinal slope of draining sewer are identical as road surface longitudinal slope, later in the interior row
The backbreak ground of part of water sewer 8 and outer draining sewer 10 inside and side slope is laid with two cloth, one film water proof geotextiles sealing 9, then
Rubble is filled in the internal drainage sewer 8 and outer draining sewer 10；
D, it backfills to form rubble drainage blanket 7 in cut slope section bottom of backbreaking, and on rubble drainage blanket 7 under
TGXG 5, expansion soil layer 6 are successively laid on and, backfill forms lateral rubble permeable layer 3, Zhi Hou on the inside of expansion soil layer 6
It expands 6 top of soil layer and is successively laid with white lime layer 4, expansion soil layer 6 from bottom to top, and backfill forms side on the inside of expansion soil layer 6
To rubble permeable layer 3；
E, the construction of step D medium stone drainage blanket above section is repeated, until after being backfilled at the top of cut slope, in cutting
It is laid with two cloth, one film water proof geotextiles sealing 2 at the top of side slope, the processing of brush slope is carried out to cut slope later, is then spread in outer slope
If planting soil 9 simultaneously protects outer slope grass planting；
F, successively road pavement base 11, surface layer 13 and drain gutter 12 are constructed.
Above-mentioned construction step is described as follows:
Preparation of construction.First to highway engineering cutting excavation section smooth location, setting-out is measured, measuring goes out in route
Stake, the stake of cutting excavation sideline suitable for reading pay attention to considering when putting sideline stake that cut slope is backbreak 4m or so by designing side slope, and stake position is put
Mono- section of sample straightway 100m, mono- section of curved section 50m.
Cutting earth excavation.Cutting earth excavation is excavated using excavator, dump truck muck haulage, and cutting is backbreak part
The earthwork considers that Slope Treatment will also utilize, and it is spare to be transported to interim spoil ground.Digging mode indulges digging method using channel-type, initially along
Cutting longitudinally excavates a channel, then widens in channel to two sides, and upper channel is widened to cut slope of backbreaking, and side slope ratio is 1:
1.5, then lower channel is excavated, it is widened, up to stage excavation to roadbed crest level.
In digging process, pay attention to that rectangle intercepting blind drain 1 is arranged on cut slope top, intercepting blind drain 1 uses weeper drain
Form, intercepting ditch cross dimensions are 0.5 × 1m (wide × high), fill rubble in ditch, intercepting blind drain 1, which cuts and cover, builds rubble.
Roadbed rolls.It after cutting excavation to roadbed top design altitude, is flattened with land leveller, scrapes road camber, and reserved compacting
Amount, roadbed is rolled to be rolled using 12t or more vibrated roller, and straightway is promoted from roadbed both sides to centre, there is superelevation
Horizontal curve section promotes from the inside to the outside, and longitudinal advance and retreat formula carries out, and rolls until surface is without obvious wheelmark, and compactness meets
Design Requirement Drawing.
The inside and outside draining sewer construction of cutting.Roadbed, which rolls, to be finished, and cut slope backbreaks on the outside of in partially and carries out the earthwork respectively
Excavate, construct internal drainage sewer 8 and outer draining sewer 10, internal drainage sewer 8 and outer 10 sectional dimension of draining sewer for 0.5 ×
0.5m (wide × high), channel bottom longitudinal slope is consistent with road surface longitudinal slope, and channel excavation finishes, and side and side slope are backbreak in the trench
Part ground is laid with two cloth, one film water proof geotextiles sealing 2, and the laying of two cloth, one film water proof geotextiles sealing 2 is finished, then seeped
Rubble is filled in ditch.
Bottom discharge cushion construction.Cut slope backbreak section bottom backfill 40cm rubble drainage blanket 7, rubble draining pad
7 width of layer are 4m, and rubble drainage blanket 7, which divides two layers, constructs, every layer of 20cm, and layered rolling is closely knit.
Cut slope expands earthen backfill and the construction of lateral permeable layer.
1., at the top of rubble drainage blanket 7 be laid with first layer TGXG 5, TGXG 5 be laid with width be 3.5m, phase
The lap width of adjacent two width TGXG 5 is not less than 200mm, and connection should securely, and the bonding strength of Impact direction is not less than material
Design tensile strength.First layer swelled ground is backfilled at the top of TGXG 5, swelled ground virtual resurfacing thickness 30cm is swollen in order to guarantee
Swollen 6 outer ledge compactness of soil layer, backfill width are 3.8m, and outside is 30cm wider than TGXG 5, is carried out using vibrated roller
It rolls, grinding compacting should be not less than the 93% of light-duty compacting criteria with a thickness of 20cm, compactness.
2., laterally rubble permeable layer 3 construct, expansion soil layer 6 on the inside of backfill first layer rubble, rubble width be 0.5m,
Rubble is with a thickness of 20cm.
3., at the first backfill expansion soil layer 6 top, spread 1cm thickness white lime layer 4, lime making width is 3.5m, is then returned
Second layer swelled ground, swelled ground virtual resurfacing thickness 30cm are filled out, backfill width is 3.8m, and outside is 30cm wider than being laid with lime, using vibration
Dynamic road roller is rolled, and grinding compacting should be not less than the 93% of light-duty compacting criteria with a thickness of 20cm, compactness.
4., laterally rubble permeable layer 3 is constructed, backfill second layer rubble on the inside of the second expansion soil layer 6, rubble width is
0.5m, rubble is with a thickness of 20cm.
5., repetitive cycling it is above-mentioned 1., 2., 3., 4. step, until being backfilled to cut slope top.
Construction of waterproof layer at the top of cutting.After swelled ground is backfilling at the top of cut slope, two cloth, one film water proof is laid at top
Geotextiles sealing 2.
The protection of cut slope grass planting.Top construction of waterproof layer finishes, and handles Cut Slopes of Expansive Soil brush slope, brushes away side slope
Then the extra backfill 30cm thickness swelled ground in outside, grade of side slope 1:1.5 are laid with 30cm thickness planting soil in outer slope, using liquid
Pressure spray seeding technique protects slope surface green grass, is washed away with reducing rainwater to slope surface.
Road surface structare layer construction.Cut Slopes of Expansive Soil is disposed, starts to carry out sub-surface 11, surface layer 13 and slope
Foot gutter 12 is constructed, and drain gutter 12 uses cast-in-place concrete structure, sectional dimension be 0.4 × 0.5m (it is wide ×
It is high), bottom of trench longitudinal slope is consistent with road surface longitudinal slope.
Finally it should be noted that: above embodiments are only to illustrate the technical solution of the utility model rather than limit it
System；Although the utility model has been described in detail with reference to the preferred embodiment, those of ordinary skill in the art should
Understand: specific implementation of the utility model can still be modified or is equally replaced to some technical characteristics
It changes；Without departing from the spirit of technical solutions of the utility model, should all cover in the claimed technical solution of the utility model
In range.
Claims (5)
1. a kind of Cut Slopes of Expansive Soil structure, it is characterised in that: including be arranged in intercepting blind drain (1) at the top of cut slope,
The internal drainage sewer (8) in outside and outer draining sewer (10), the setting cut slope bottom in the cut slope are set
Rubble drainage blanket (7), the road surface structare layer of the cut slope side is set, the intercepting blind drain (1), internal drainage seep
Rubble, the internal drainage sewer (8) and outer draining sewer (10) inside, cutting side are filled in ditch (8) and outer draining sewer (10)
Hillside fields face and top are equipped with two cloth, one film water proof geotextiles sealing (2), on the rubble drainage blanket (7) from bottom to top according to
Secondary circulation is laid with TGXG (5), expansion soil layer (6), white lime layer (4), expansion soil layer (6), expansion soil layer (6) inside
It equipped with lateral rubble permeable layer (3), is equipped with planting soil (9) on the outer slope of the cut slope, interior kind of the planting soil (9)
Plant herbaceous plant.
2. Cut Slopes of Expansive Soil structure according to claim 1, it is characterised in that: the section of the intercepting blind drain (1)
Width is 0.5m, is highly 1m；The width of the internal drainage sewer (8) and outer draining sewer (10) is 0.5m, is highly 0.5m；
The rubble drainage blanket (7) with a thickness of 40cm, width 4m.
3. Cut Slopes of Expansive Soil structure according to claim 1, it is characterised in that: the laying of the TGXG (5)
Width is 3.5m, and the lap width of adjacent two width TGXG is greater than or equal to 200mm；It is described expansion soil layer (6) width be
3.8m, outside than TGXG (5) width 30cm, expansion soil layer (6) after grinding compacting with a thickness of 20cm, compactness should be greater than
Or equal to the 93% of light-duty compacting criteria；The white lime layer (4) with a thickness of 1cm；The width of the lateral rubble permeable layer (3)
Degree is 0.5m, and layering is laid with a thickness of 20cm.
4. Cut Slopes of Expansive Soil structure according to claim 1, it is characterised in that: the road surface structare layer includes bottom
Sub-surface (11), setting the sub-surface (11) top surface layer (13) and be arranged in the surface layer (13)
Drain gutter (12).
5. Cut Slopes of Expansive Soil structure according to claim 4, it is characterised in that: the drain gutter (12) is adopted
With cast-in-place concrete structure, width 0.4m is highly 0.5m, and the longitudinal slope of drain gutter (12) is identical as road surface longitudinal slope.
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| CN201821737048.0U CN209412838U (en) | 2018-10-25 | 2018-10-25 | A kind of Cut Slopes of Expansive Soil structure |
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| CN201821737048.0U CN209412838U (en) | 2018-10-25 | 2018-10-25 | A kind of Cut Slopes of Expansive Soil structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109235469A (en) * | 2018-10-25 | 2019-01-18 | 北京星河园林景观工程有限公司 | A kind of Cut Slopes of Expansive Soil structure and its construction method |
| CN114319395A (en) * | 2022-01-30 | 2022-04-12 | 湖北工业大学 | Ecological bag modified expansive soil flexible ecological slope protection structure and construction method |
-
2018
- 2018-10-25 CN CN201821737048.0U patent/CN209412838U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109235469A (en) * | 2018-10-25 | 2019-01-18 | 北京星河园林景观工程有限公司 | A kind of Cut Slopes of Expansive Soil structure and its construction method |
| CN114319395A (en) * | 2022-01-30 | 2022-04-12 | 湖北工业大学 | Ecological bag modified expansive soil flexible ecological slope protection structure and construction method |
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