CN114635434A - Greening protection method for roadbed high slope of earthquake fault zone - Google Patents
Greening protection method for roadbed high slope of earthquake fault zone Download PDFInfo
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- CN114635434A CN114635434A CN202011494269.1A CN202011494269A CN114635434A CN 114635434 A CN114635434 A CN 114635434A CN 202011494269 A CN202011494269 A CN 202011494269A CN 114635434 A CN114635434 A CN 114635434A
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- grass irrigation
- irrigation bags
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000004224 protection Effects 0.000 title claims abstract description 15
- 244000025254 Cannabis sativa Species 0.000 claims abstract description 97
- 238000003973 irrigation Methods 0.000 claims abstract description 82
- 230000002262 irrigation Effects 0.000 claims abstract description 82
- 239000002689 soil Substances 0.000 claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000010276 construction Methods 0.000 claims description 23
- 230000008569 process Effects 0.000 claims description 8
- 238000004062 sedimentation Methods 0.000 claims description 6
- 230000001680 brushing effect Effects 0.000 claims description 4
- 239000004744 fabric Substances 0.000 claims description 3
- 239000004746 geotextile Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 238000009331 sowing Methods 0.000 claims description 3
- 238000005192 partition Methods 0.000 claims 1
- 230000008439 repair process Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 2
- 235000021384 green leafy vegetables Nutrition 0.000 abstract 1
- 239000002585 base Substances 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000010899 nucleation Methods 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 230000006750 UV protection Effects 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
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Classifications
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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
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G17/00—Cultivation of hops, vines, fruit trees, or like trees
- A01G17/005—Cultivation methods
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G20/00—Cultivation of turf, lawn or the like; Apparatus or methods therefor
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G22/00—Cultivation of specific crops or plants not otherwise provided for
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/02—Receptacles, e.g. flower-pots or boxes; Glasses for cultivating flowers
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/10—Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains
-
- 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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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental Sciences (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- General Engineering & Computer Science (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Botany (AREA)
- Soil Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Agronomy & Crop Science (AREA)
- Health & Medical Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Abstract
The invention provides a greening protection method for a roadbed high slope of an earthquake fault zone, which adopts an excavator to repair a slope, pours a concrete foundation at the slope bottom, builds grass irrigation bags on the slope layer by layer, connects and reinforces the upper and lower grass irrigation bags, lays a water-blocking film at the bottom of the topmost grass irrigation bag, builds a road shoulder and a drainage ditch at the slope top, prevents road surface flowing water from permeating into the roadbed slope to cause collapse, and finally covers soil and greens on the surface of the grass irrigation bags. The invention can provide safe and reliable protection for the roadbed side slope in the earthquake fault zone area and ensure the side slope greening effect.
Description
Technical Field
The invention belongs to the technical field of building construction, and relates to a method for greening embankment side slopes, which is mainly suitable for greening the side slopes of highways and railways at earthquake fault zones.
Background
The slope protection of the highways and highways usually comprises concrete skeleton slope protection, spray seeding grass planting, three-dimensional vegetation nets and other methods. The concrete skeleton slope protection is of a rigid structure, when a roadbed is positioned in the range of an earthquake fracture zone, the phenomena of uneven settlement, displacement and the like of a side slope can be caused due to geological motion, and the rigid slope protection is easy to break to cause slope protection instability; spray-seeding grass planting, three-dimensional vegetation nets and the like belong to flexible slope protection modes, can resist uneven settlement generated by geological motion, but are only suitable for short slopes below 3m due to structural characteristics, and are not suitable for high slope conditions.
Disclosure of Invention
The invention aims to provide a greening protection method capable of adapting to uneven settlement of a roadbed high slope of an earthquake fault zone aiming at the problem that the conventional construction method is difficult to meet the protection performance requirement of the roadbed slope within the earthquake fault zone.
The technical scheme of the invention is as follows:
a greening protection method for a roadbed high slope of an earthquake fracture zone is characterized by comprising the following steps:
(1) brushing a roadbed side slope: repairing the slope by adopting an excavator according to the designed slope ratio of the slope; reserving foundation soil with a certain thickness on the surface of the side slope during slope repair, and manually repairing the side slope in the subsequent grass bag filling and building process;
(2) and (3) concrete foundation construction: excavating a plurality of drainage grooves from the top of the slope to the bottom of the slope by using concrete, wherein the distance between every two adjacent drainage grooves is 10-15 m; excavating a foundation pit longitudinally along the side slope at the slope bottom, and pouring a concrete foundation, wherein a first-stage step is arranged on one side, back to the side slope, of the top of the concrete foundation;
(3) constructing grass irrigation bags: constructing grass irrigation bags layer by layer from the bottom of a slope to the top of the slope, wherein the grass irrigation bags are made of vegetation ecological cloth, and the interior of the grass irrigation bags is filled with planting soil; the first layer of grass irrigation bags are stacked on one side, facing a side slope, of the top surface of the concrete foundation, the subsequent layers of grass irrigation bags are stacked on the slope surface according to the slope gradient, a first-level flat step is manually trimmed on the slope surface before each layer of grass irrigation bags are stacked, one part of each grass irrigation bag is pressed on the step, the other part of each grass irrigation bag is pressed on the lower layer of grass irrigation bag, a seam between the upper layer of grass irrigation bags and a seam between the lower layer of grass irrigation bags are arranged in a staggered mode, a connecting buckle is arranged between the upper layer of grass irrigation bags and the lower layer of grass irrigation bags, the connecting buckle comprises a base plate, the top surface and the bottom surface of the base plate are respectively provided with a plurality of pointed cones, and the pointed cones of the top surface and the bottom surface are respectively penetrated into the upper layer of grass irrigation bags and the lower layer of grass irrigation bags;
(4) and (3) waterproof and drainage construction:
(41) draining: arranging a row of water pipes on the side slope at certain intervals according to the longitudinal direction and the slope direction of the side slope, wherein each water pipe is arranged between two layers of grass irrigation bags according to the designed position in the construction process of the grass irrigation bags; the water drainage pipes are made of PVC pipes, the rear end of each water drainage pipe is deep into the slope body, the outer wall of each water drainage pipe is provided with a plurality of water seepage holes and is wrapped by non-woven geotextile, and the front end of each water drainage pipe faces the outside of the slope body and is inclined downwards by 5 percent of slope;
(42) when the grass irrigation bag is built to the top of the side slope, a layer of water-blocking film is paved at the bottom of the topmost grass irrigation bag, and concrete shoulder pads and drainage ditches are longitudinally poured along the side slope at the top of the slope, so that the situation that the flowing water of the road surface permeates into the interior of the roadbed side slope to cause collapse is prevented;
(5) slope greening construction: after the grass irrigation bags are built, covering a layer of earthing soil on the surfaces of the grass irrigation bags, wherein the earthing soil is planting soil with small particle size, and sowing grass seeds or planting green seedlings in the earthing soil.
The grass irrigation bags are used as basic units to be built on the side slope, and the grass irrigation bags are connected and reinforced, so that the roadbed side slope can be effectively protected under the condition that a rigid concrete skeleton slope protection cannot be adopted in an earthquake fracture zone area, the safety and the reliability of engineering are fundamentally improved, and the side slope greening effect is ensured.
Drawings
FIG. 1 is a flow chart of the construction of the present invention;
FIG. 2 is a schematic view of a side slope after brushing;
FIG. 3 is a schematic view of the elevation structure of the side slope after brushing;
FIG. 4 is a schematic plan view of the construction of grass irrigation bags on the side slopes;
FIG. 5 is a schematic view of the elevation structure of the grass-filled bag on the side slope after the bag is built;
FIG. 6 is a partial plan view of the stacking structure of the grass bag;
FIG. 7 is a partial elevation view of a stacking structure of the grass bag;
FIG. 8 is a front view of the coupling buckle;
FIG. 9 is a side view of the coupling buckle;
fig. 10 is a schematic view of the structure of the drain pipe.
Detailed Description
FIG. 1 is a construction flow chart of the present invention, and the specific construction method is as follows:
(1) as shown in fig. 2 and 3, an excavator is adopted to repair the slope according to the designed slope ratio of the slope; and (3) reserving foundation soil with a certain thickness on the surface of the side slope 1 during slope repairing, and manually repairing the side slope in the subsequent grass bag building process.
When the excavator is used for slope repair, the excessive line slope cutting is avoided, and the backfilling caused by the excessive digging is avoided; the thickness of the reserved foundation soil on the slope surface is about 15 cm.
(2) Excavating a side slope 1 and pouring a plurality of drainage grooves 2 from the top of the slope to the bottom of the slope by using concrete, wherein the distance between every two adjacent drainage grooves is 10-15 m; and excavating a foundation pit longitudinally along the side slope at the slope bottom, pouring a concrete foundation 3, and arranging a first-stage step at one side of the top of the concrete foundation 3, which is back to the side slope.
(3) As shown in fig. 4, 5, 6 and 7, the grass irrigation bags 4 are built layer by layer from the slope bottom to the slope top, are made of ecological cloth with the vegetation made of polypropylene as the main raw material, have the functions of ultraviolet resistance, acid and alkali resistance, water and soil permeability and the like, are formed into bags with the specification of 580 x 330 x 150(mm), and are filled with the plant soil; the first layer of grass irrigation bag is stacked on one side, facing the side slope, of the top surface of the concrete foundation 3, and the steps on the outer side of the top surface of the concrete foundation provide lateral support for the grass irrigation bag to prevent the grass irrigation bag from sliding down. The grass irrigation bags on each subsequent layer are sequentially stacked on the slope surface according to the slope gradient, a first level smooth step is trimmed on the slope surface manually before each layer of grass irrigation bag is stacked, one part of the grass irrigation bag is pressed on the step, the other part of the grass irrigation bag is pressed on the grass irrigation bag on the lower layer, the seam between the grass irrigation bags on the upper layer and the seam between the grass irrigation bags on the lower layer are arranged in a staggered mode, and a connecting buckle 5 is arranged between the grass irrigation bags on the upper layer and the grass irrigation bags on the lower layer.
The structure of the coupling buckle 5 is shown in fig. 8 and 9, and includes a base plate 51, and a plurality of sharp cones 52 are respectively disposed on the top surface and the bottom surface of the base plate. The top and bottom tapers 52 pierce the grass-irrigating bags to prevent slippage between the grass-irrigating bags.
(4) And (3) waterproof and drainage construction:
(41) draining: and water drainage pipes 6 are arranged on the side slope at intervals according to the longitudinal direction and the slope direction of the side slope, and each water drainage pipe is arranged between two layers of grass irrigation bags in the construction process of the grass irrigation bags according to the designed position.
The structure of the drainage pipe 6 is as shown in fig. 10, and adopts a PVC pipe, the rear end of each drainage pipe is inserted into the slope, and the outer wall is provided with a plurality of water seepage holes 61 and is wrapped by a non-woven geotextile 62. The front end of each drainage pipe faces the outside of the slope and inclines downwards by 5 percent of slope.
(42) And (3) waterproofing, wherein when the grass irrigation bag is built to the top of the side slope, a water-blocking film is paved at the bottom of the topmost grass irrigation bag, and a concrete shoulder protector 7 and a drainage ditch 8 are longitudinally poured along the side slope at the top of the side slope, so that the road surface flowing water is prevented from permeating into the inside of the roadbed side slope to cause collapse.
(5) Slope greening construction: after the grass irrigation bags are built, covering a layer of soil covering on the surfaces of the grass irrigation bags, wherein the soil covering is planting soil with small particle size, and sowing grass seeds or planting green seedlings in the soil covering.
When the invention is implemented specifically, in the construction process of the grass irrigation bags, a layer of geogrid can be laid between two layers of grass irrigation bags every certain number of layers, so that the stability of the grass irrigation bags is improved.
During the concrete construction of the invention, the construction of the grass irrigation bags can be carried out on the side slope in different areas, after 7-8 layers of the grass irrigation bags are constructed in each area, the grass irrigation bags are watered for pre-sedimentation, and the pre-sedimentation time is 4-5 hours; when one area is subjected to pre-sedimentation, grass bag building can be carried out in other areas, and the construction is circulated until the whole slope grass bag building is completed.
Claims (3)
1. A greening protection method for a roadbed high slope of an earthquake fracture zone is characterized by comprising the following steps:
(1) brushing the side slope of the roadbed: repairing the slope by adopting an excavator according to the designed slope ratio of the slope; reserving foundation soil with a certain thickness on the surface of the side slope during slope repairing, and manually repairing the side slope in the subsequent grass bag filling and building process;
(2) and (3) concrete foundation construction: excavating a plurality of drainage grooves from the top of the slope to the bottom of the slope by using concrete, wherein the distance between every two adjacent drainage grooves is 10-15 m; excavating a foundation pit longitudinally along the side slope at the slope bottom, and pouring a concrete foundation, wherein a first-stage step is arranged on one side, back to the side slope, of the top of the concrete foundation;
(3) constructing grass irrigation bags: constructing grass irrigation bags layer by layer from the bottom of a slope to the top of the slope, wherein the grass irrigation bags are made of vegetation ecological cloth, and the interior of the grass irrigation bags is filled with planting soil; the first layer of grass irrigation bags are stacked on one side, facing a side slope, of the top surface of the concrete foundation, the subsequent layers of grass irrigation bags are stacked on the slope surface according to the slope gradient, a first-level flat step is manually trimmed on the slope surface before each layer of grass irrigation bags are stacked, one part of each grass irrigation bag is pressed on the step, the other part of each grass irrigation bag is pressed on the lower layer of grass irrigation bag, a seam between the upper layer of grass irrigation bags and a seam between the lower layer of grass irrigation bags are arranged in a staggered mode, a connecting buckle is arranged between the upper layer of grass irrigation bags and the lower layer of grass irrigation bags, the connecting buckle comprises a base plate, the top surface and the bottom surface of the base plate are respectively provided with a plurality of pointed cones, and the pointed cones of the top surface and the bottom surface are respectively penetrated into the upper layer of grass irrigation bags and the lower layer of grass irrigation bags;
(4) and (3) waterproof and drainage construction:
(41) draining: arranging a drainage pipe on the side slope at intervals according to the longitudinal direction and the slope direction of the side slope, wherein each drainage pipe is arranged between two layers of grass irrigation bags according to the designed position in the construction process of the grass irrigation bags; the water drainage pipes are made of PVC pipes, the rear end of each water drainage pipe is deep into the slope body, the outer wall of each water drainage pipe is provided with a plurality of water seepage holes and is wrapped by non-woven geotextile, and the front end of each water drainage pipe faces the outside of the slope body and is inclined downwards by 5 percent of slope;
(42) when the grass irrigation bag is built to the top of the side slope, a layer of water-blocking film is paved at the bottom of the topmost grass irrigation bag, and concrete shoulder pads and drainage ditches are longitudinally poured along the side slope at the top of the side slope to prevent the road surface from flowing water from permeating into the inside of the side slope of the roadbed to cause collapse;
(5) slope greening construction: after the grass irrigation bags are built, covering a layer of soil covering on the surfaces of the grass irrigation bags, wherein the soil covering is planting soil with small particle size, and sowing grass seeds or planting green seedlings in the soil covering.
2. The method for greening and protecting high slope of subgrade in earthquake fracture zone according to claim 1, which is characterized in that: in the construction process of laying the grass irrigation bags, a layer of geogrid is laid between two layers of grass irrigation bags every time a certain number of layers are laid, so that the stability of the grass irrigation bags is improved.
3. The method for greening and protecting high slope of subgrade in earthquake fault zone according to claim 1, characterized in that: the construction of the grass irrigation bags is carried out on the slope in a partition manner, after 7-8 layers of grass irrigation bags are constructed in each area, watering is carried out on the grass irrigation bags for pre-sedimentation, and the pre-sedimentation time is 4-5 hours; when one area is subjected to pre-sedimentation, grass bag building is carried out in other areas, and the construction is circulated until the whole slope grass bag building is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011494269.1A CN114635434A (en) | 2020-12-16 | 2020-12-16 | Greening protection method for roadbed high slope of earthquake fault zone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011494269.1A CN114635434A (en) | 2020-12-16 | 2020-12-16 | Greening protection method for roadbed high slope of earthquake fault zone |
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| Publication Number | Publication Date |
|---|---|
| CN114635434A true CN114635434A (en) | 2022-06-17 |
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| CN202011494269.1A Pending CN114635434A (en) | 2020-12-16 | 2020-12-16 | Greening protection method for roadbed high slope of earthquake fault zone |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115492048A (en) * | 2022-09-21 | 2022-12-20 | 中铁九局集团第一建设有限公司 | Three-dimensional ecological slope protection construction method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006063631A (en) * | 2004-08-26 | 2006-03-09 | Japan Railway Construction Transport & Technology Agency | Borrow stabilizing structure on sealing sheet on slope, and method of constructing the same |
| CN203373757U (en) * | 2013-07-08 | 2014-01-01 | 中铁第四勘察设计院集团有限公司 | Sash green ecological protection structure |
| CN210104766U (en) * | 2019-01-14 | 2020-02-21 | 珠海国嘉建筑工程有限公司 | Ecological slope protection structure |
-
2020
- 2020-12-16 CN CN202011494269.1A patent/CN114635434A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006063631A (en) * | 2004-08-26 | 2006-03-09 | Japan Railway Construction Transport & Technology Agency | Borrow stabilizing structure on sealing sheet on slope, and method of constructing the same |
| CN203373757U (en) * | 2013-07-08 | 2014-01-01 | 中铁第四勘察设计院集团有限公司 | Sash green ecological protection structure |
| CN210104766U (en) * | 2019-01-14 | 2020-02-21 | 珠海国嘉建筑工程有限公司 | Ecological slope protection structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115492048A (en) * | 2022-09-21 | 2022-12-20 | 中铁九局集团第一建设有限公司 | Three-dimensional ecological slope protection construction method |
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