CN112391891A - Highway fine-grained soil soaking embankment side slope ecological protection structure and construction method - Google Patents
Highway fine-grained soil soaking embankment side slope ecological protection structure and construction method Download PDFInfo
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- 239000002689 soil Substances 0.000 title claims abstract description 56
- 238000010276 construction Methods 0.000 title claims abstract description 22
- 238000002791 soaking Methods 0.000 title abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 112
- 230000008635 plant growth Effects 0.000 claims abstract description 78
- 238000002347 injection Methods 0.000 claims description 33
- 239000007924 injection Substances 0.000 claims description 33
- 239000004746 geotextile Substances 0.000 claims description 20
- 239000004576 sand Substances 0.000 claims description 19
- 238000005056 compaction Methods 0.000 claims description 9
- 239000000758 substrate Substances 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 238000010521 absorption reaction Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 3
- 238000007654 immersion Methods 0.000 claims 1
- 230000001681 protective effect Effects 0.000 claims 1
- 238000002955 isolation Methods 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 48
- 230000008901 benefit Effects 0.000 description 10
- 230000007613 environmental effect Effects 0.000 description 5
- 230000007547 defect Effects 0.000 description 3
- 230000012010 growth Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000003607 modifier Substances 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 239000000945 filler Substances 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C3/00—Foundations for pavings
- E01C3/04—Foundations produced by soil stabilisation
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- 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
- A01G27/00—Self-acting watering devices, e.g. for flower-pots
- A01G27/02—Self-acting watering devices, e.g. for flower-pots having a water reservoir, the main part thereof being located wholly around or directly beside the growth substrate
-
- 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
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
-
- 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
- E02D17/205—Securing of slopes or inclines with modular blocks, e.g. pre-fabricated
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
-
- 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
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Environmental Sciences (AREA)
- Water Supply & Treatment (AREA)
- Architecture (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Abstract
The invention belongs to the technical field of road engineering construction, and particularly relates to a highway fine-grained soil soaking embankment side slope ecological protection structure and a construction method. The ecological protection structure for the fine-grained soil immersed embankment side slope of the highway comprises a roadbed foundation, a connecting anchor rod, a fine-grained soil filling layer, a concrete mold bag, a water storage base mold bag, a plant growth base and seed mold bag, a connecting device I and a connecting device II. According to the invention, a stable enclosure structure is built on the side face of the embankment through regular square mould bag concrete to form a closed waterproof and anti-seepage structure, so that the stability of the side slope of the embankment is ensured, the isolation between fine-grained soil in the embankment and an external water body is protected, and the softening damage of the fine-grained soil under the action of water is avoided; meanwhile, a water storage base mold bag, a plant growth base and a seed mold bag are additionally hung on the outer side of the concrete mold bag, the water storage base mold bag can store rainwater and provide a plant growth water source for the plant growth base and the seed mold bag, a green side slope is formed together, and a slope protection system of the side slope of the embankment is perfected.
Description
Technical Field
The invention belongs to the technical field of road engineering construction, and particularly relates to a highway fine-grained soil soaking embankment side slope ecological protection structure and a construction method.
Background
When a road embankment is built in a long-term water-retaining region, if embankment filling materials are fine-grained soil, the submerged embankment is easy to generate structural damage under the circulation action of traffic load, and the defects of slurry turning, mud pumping, uneven settlement and deformation of the embankment and the like occur. The conventional countermeasures are mainly two types: one is to use sandy soil to replace cohesive soil as roadbed filler, and the other is to use roadbed modifier to improve clay. When sandy soil is lacked along the road, the remote sand transportation is high in cost on one hand, and the environment is damaged due to the abandoned soil on the other hand; when the clay modifier is used for construction, the requirements on construction machinery and construction climate are high, the construction cost is high, and the construction progress is slow. How to reduce the construction cost and improve the construction rate on the premise of ensuring the long-term stability of the submerged embankment is an urgent problem to be solved.
Disclosure of Invention
The invention aims to provide a slope ecological protection structure and a construction method of a fine-grained soil-immersed road embankment for a road, which aim to overcome the defect of poor water stability of the fine-grained soil-immersed road embankment and overcome the defects of high cost, large environmental influence and the like of the traditional technical scheme.
In order to achieve the purpose, the invention adopts the following technical scheme:
a highway fine-grained soil water-soaking embankment side slope ecological protection structure comprises a roadbed foundation, connecting anchor rods, fine sand filling layers, concrete mold bags, water storage base mold bags, a plant growth base and seed mold bags, a connecting device I and a connecting device II, wherein a plurality of fine sand filling layers which are arranged in a step shape are filled at the top of the roadbed foundation, the concrete mold bags are fixed at the outer side of each fine sand filling layer through the connecting anchor rods, concrete injection holes are formed in the concrete mold bags, the outer side of each concrete mold bag is connected with the water storage base mold bags through the connecting device I, the water storage base mold bags are provided with the water storage base injection holes, the outer side of each water storage base mold bag is connected with the plant growth base and the seed mold bags through the connecting device II, the plant growth base and the seed mold bags are connected with the concrete mold bags through the connecting device I, the plant growth base and the seed injection holes are formed in the plant growth base and the seed mold bags, the multifunctional combined mold bag is used for filling the outer sides of all the fine sand filling layers distributed in a step shape into a slope of a embankment slope, the concrete mold bag forms a stable structure system of the slope of the embankment slope and a water-proof structure layer, and the water storage base mold bag, the plant growth base and the seed mold bag form a green slope protection system of the slope together.
Furthermore, connecting device I including set up in the concave type draw-in groove of concrete mold bag end, set up respectively at the protruding bayonet socket of water storage base mold bag and vegetation base and seed mold bag, concave type draw-in groove and protruding bayonet socket cooperation joint.
Further, connecting device II including set up the bayonet socket and the couple of setting at vegetation base and seed mould bag lower surface at water storage base mould bag upper surface, the couple is hung and is detained on the bayonet socket.
Further, the concrete mold bag is formed by inserting hard plastic plates or steel plates into double-layer geotextile, the shape of the concrete mold bag is a regular cube, and the height of the concrete mold bag is consistent with the height of a fine sand filling layer filled once.
Further, the water storage base mold bag is in a shape of a right-angle triangular prism, the height of the water storage base mold bag is half of the height of the concrete mold bag, and the ratio of the height to the length of the water storage base mold bag is consistent with the designed slope rate of the roadbed side slope.
Furthermore, the upper inclined plane of the water storage base mold bag is made of permeable geotextile, and the other 4 surfaces are made of double-layer geotextile and hard plastic plates inserted in the geotextile.
Furthermore, the plant growth base and the seed mold bag are in the shape of a parallel trapezoidal prism, the size of the lower inclined surface of the plant growth base and the seed mold bag is completely consistent with that of the upper inclined surface of the water storage base mold bag, the upper inclined surface is parallel to the lower inclined surface, the length of the inclined edge a is half of the height of the concrete mold bag, the ratio of the inclined edge a to the inclined edge b is consistent with the design slope rate of the roadbed slope, and the inclined edge a is perpendicular to the inclined edge b.
Furthermore, the plant growth substrate and the seed mold bag are surrounded by a double-layer geotextile and a hard plastic board, the lower surface of the plant growth substrate and the seed mold bag is made of permeable geotextile, and the upper surface of the plant growth substrate and the seed mold bag is made of double-layer steel mesh sandwiched porous linen.
Furthermore, the concrete mold bags are filled with fine aggregate mold bag concrete, the water storage base mold bags are filled with porous water absorption materials such as ceramsite and the like, and the plant growth base and the seed mold bags are filled with ploughing soil and plant seeds.
The construction method of the ecological protection structure of the fine-grained soil immersed embankment side slope of the highway comprises the following steps:
step 1: the first layer of roadbed is processed, the roadbed foundation is processed, the combined mould bags with the same height are selected according to the roadbed layered filling thickness, the concrete mould bags and the roadbed foundation are connected at the designed position by using the connecting anchor rods, the mould bag concrete is filled to be compact through the concrete filling holes, after the concrete is initially set for 24 hours, the first layer of fine-grained soil is paved, and the fine-grained soil is compacted to the designed compaction degree by using a photo wheel road compactor.
Step 2: and (3) treating the second roadbed, connecting the concrete mold bag and the first fine-grained soil filling layer at a designed position by using a connecting anchor rod, filling the concrete of the mold bag to be compact through a concrete filling hole, paving the second fine-grained soil after the concrete is initially set for 24 hours, and compacting to a designed compaction degree by using a smooth wheel roller.
And step 3: and (5) repeating the step (2) to complete all the layered roadbed filling work in sequence.
And 4, step 4: installing a water storage base mold bag of a first layer of roadbed, selecting a water storage base mold bag with proper specification according to the size of the concrete mold bag and the design slope rate of a roadbed side slope, installing the water storage base mold bag on the roadbed foundation, fixing the water storage base mold bag outside the concrete mold bag by using a reserved connecting device I, filling a ceramsite material through a water storage base injection hole, and sealing the water storage base injection hole after the water storage base mold bag is tightly filled.
And 5: the method comprises the steps of installing a plant growth base and a seed mold bag of a first layer of roadbed, selecting a plant growth base and a seed mold bag of proper specifications according to the size of the concrete mold bag and the design slope rate of a roadbed slope, fixing the plant growth base and the seed mold bag outside the concrete mold bag by using a reserved connecting device I, fixing the plant growth base and the seed mold bag above the side of a water storage base mold bag by using a reserved connecting device II, then injecting mixed plowing soil and plant seeds through the plant growth base and seed injection holes, and sealing the plant growth base and seed injection holes after being filled compactly.
Step 6: and (5) repeating the step 5 to sequentially complete the installation of all the water storage base mold bags, the plant growth base mold bags and the seed mold bags, and then sprinkling water on the upper surface of the plant growth base mold bags for maintenance to ensure that the plants grow perfectly.
The invention has the beneficial effects that:
1. the invention builds a stable enclosure structure on the side of the embankment through regular cube concrete mold bags to form a closed fine-grained soil slope protection structure with stable structure and closed space, thereby not only ensuring the stability of the side slope of the embankment, but also ensuring the isolation between the fine-grained soil inside the embankment and the external water body, avoiding the softening and the damage of the fine-grained soil under the action of water, avoiding the damage of the fine-grained soil subgrade caused by the water damage, improving the comprehensive utilization rate of the fine-grained soil in the subgrade filling process, simultaneously, the mold bag concrete also has the advantages of high construction speed, moderate price, controllable quality and the like, and has obvious economic benefit and environmental benefit.
2. The water storage base mold bag, the plant growth base and the seed mold bag are connected with the concrete mold bag to form a multifunctional combined mold bag, the water storage base mold bag provides water for plant growth of side slopes, and the plant growth base and the seed mold bag provide green protection surfaces for the side slopes, so that the requirements for stable structure and water resistance of the side slopes of the embankment and green and environment-friendly functions of roads are met, and the multifunctional combined mold bag has remarkable environmental benefits and social benefits.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the overall structure of the modular bag of the present invention;
FIG. 3 is a schematic structural diagram of a connecting device I according to the present invention;
fig. 4 is a schematic structural diagram of a connecting device II according to the present invention.
In the figure: 1-roadbed foundation, 2-fine sand filling layer, 3-connecting anchor rod, 4-concrete mold bag, 5-concrete injection hole, 6-connecting device I, 7-water storage base mold bag, 8-water storage base injection hole, 9-connecting device II, 10-plant growth base and seed mold bag, 11-plant growth base and seed injection hole, 12-concave type clamping groove, 13-convex type clamping groove, 14-clamping groove and 15-hook.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
referring to fig. 1-4, a slope ecological protection structure of a fine-grained soil-immersed embankment for a road comprises a roadbed foundation 1, connecting anchor rods 3, fine sand filling layers 2, concrete mold bags 4, water storage foundation mold bags 7, a plant growth foundation and seed mold bags 10, a connecting device I6 and a connecting device II9, wherein a plurality of fine sand filling layers 2 arranged in a step shape are filled on the top of the roadbed foundation 1, the concrete mold bags 4 are fixed on the outer side of each fine sand filling layer 2 through the connecting anchor rods 3, the concrete mold bags 4 are installed on the two sides of the roadbed as shown in fig. 1, the first concrete mold bag 4 is installed on the compacted roadbed foundation 1, the second and above concrete mold bags 4 are installed on the compacted fine-grained soil filling layer, and the concrete mold bags 4 are tightly connected with the roadbed foundation 1 or the fine-grained soil filling layer by the connecting anchor rods 3, the concrete mold bag 4 is provided with a concrete injection hole 5, and a stable enclosure structure is built on the side face of the embankment through the concrete mold bag 4 to form a closed waterproof and anti-seepage structure, so that the stability of the side slope of the embankment is ensured, the isolation between fine-grained soil inside the embankment and an external water body is ensured, the fine-grained soil is prevented from being softened and damaged under the action of water, the mold bag concrete also has the advantages of high construction speed, moderate price, controllable quality and the like, and the concrete mold bag has remarkable economic benefit and environmental benefit. The outer side of each layer of concrete mold bag 4 is connected with a water storage base mold bag 7 through a connecting device I6, a water storage base injection hole 8 is formed in the water storage base mold bag 7, the first layer of water storage base mold bag 7 is installed on the roadbed foundation 1, the water storage base mold bags 7 on the second layer and above are installed on the concrete mold bags 4 on the upper layer, and the water storage base mold bags 7 are connected to the outer side of the same layer of concrete mold bags 4 through connecting devices I6. The outer side of each layer of water storage base mold bag 7 is connected with a plant growth base and seed mold bag 10 through a connecting device II9, the plant growth base and seed mold bag 10 is connected with a concrete mold bag 4 through a connecting device I6, plant growth base and seed injection holes 11 are formed in the plant growth base and seed mold bag 10, the plant growth base and seed mold bag 10 is connected with the concrete mold bag 4 in the same layer through a connecting device I6 and is fixed on the same layer of water storage base mold bag 7 through a connecting device II9, the concrete mold bag 4, the water storage base mold bag 7, the plant growth base and seed mold bag 10 jointly form a multifunctional combined mold bag, the outer side of the step-shaped fine sand filling layer 2 is filled into a slope of a embankment, the concrete mold bag 4 forms a stable slope structure system and a water-proof structure layer, the water storage base mold bag 7, the plant growth base and seed mold bag 10 jointly form a green slope protection system, the multifunctional combined mould bag jointly forms a stable slope protection and water-resisting system to isolate the contact between the fine-grained soil embankment and the external water body. A water storage base mold bag 7, a plant growth base and a seed mold bag 10 are additionally hung on the outer side of the concrete mold bag 4, the water storage base mold bag 7 can store rainwater, plant growth water sources are provided for the plant growth base and the seed mold bag 10, a green side slope is formed jointly, the stable structure and the water-proof function of the side slope of the embankment are met, the green environment-friendly function of the highway is also met, the slope protection system of the side slope of the embankment is further perfected, and the obvious environmental benefit and social benefit are achieved.
The connecting device I6 comprises a concave clamping groove 12 arranged at the end of the concrete mould bag 4 and convex bayonets 13 respectively arranged on the water storage base mould bag 7 and the plant growth base and seed mould bag 10, and the concave clamping groove 12 is matched and clamped with the convex bayonets 13. The connecting device II9 comprises a bayonet 14 arranged on the upper surface of the water storage base mold bag 7 and a hook 15 arranged on the lower surface of the plant growth base and seed mold bag 10, and the hook 15 is hung and buckled on the bayonet 14. The water storage base mold bag 7 is connected to the concave type clamping groove 12 at the end of the same layer of concrete mold bag 4 through the convex type bayonet 13, the plant growth base and seed mold bag 10 is fixed to the same layer of concrete mold bag 4 and the water storage base mold bag 7 through the connecting device I6 and the connecting device II9 respectively, the width of the three mold bags is consistent, the size of the connecting surface is consistent, and the multifunctional combined mold bag is formed through the connecting mode.
The concrete mold bag 4 is formed by inserting hard plastic plates into double-layer geotextile, is in a regular cube shape, has the size of 0.2m multiplied by 1.5m multiplied by 1m (height multiplied by length multiplied by width), is provided with a concrete injection hole 5 on the upper surface for injecting concrete, and has the aperture of 5-10cm in the concrete injection hole 5. The height of the concrete mold bag 4 is consistent with the height of the fine sand filling layer 2 filled at a single time, the height of the concrete mold bag 4 can be adjusted randomly according to the single roadbed filling compaction height, and the shape of a square regulated by concrete is favorable for ensuring that the building mold bag forms a closed water-proof space, so that the external water body is prevented from permeating fine soil.
The water storage base mold bag 7 is in a shape of a right-angle triangular prism, the width of the water storage base mold bag is 1m, the height of the water storage base mold bag is half of the height of the concrete mold bag 4, the ratio of the height to the length of the water storage base mold bag is consistent with the designed slope rate of the roadbed side slope, and the ratio of the height to the length of the water storage base mold bag 7 can be adjusted at will according to the designed slope rate of the roadbed side slope. The upper inclined plane of the water storage base mold bag 7 is made of permeable geotextile, the other 4 surfaces are made of double-layer geotextile and inserted hard plastic plates, a water storage base injection hole 8 is reserved on the upper inclined plane and used for injecting the water storage base, and the aperture of the water storage base injection hole 8 is 5-10 cm.
The shape of the plant growth base and seed mold bag 10 is a parallel trapezoidal prism, the width of the mold bag is 1m, the size of the lower inclined surface of the mold bag is completely consistent with that of the upper inclined surface of the water storage base mold bag 7, the upper inclined surface is parallel to the lower inclined surface, the length of the inclined edge a is half of the height of the concrete mold bag 4, the ratio of the inclined edge a to the inclined edge b is consistent with the designed slope rate of a roadbed slope, and the inclined edge a is vertical to the inclined edge b; the plant growth substrate and the seed mold bag 10 are surrounded by double-layer geotextile and insert hard plastic plates, the lower surface of the plant growth substrate and the seed mold bag is made of permeable geotextile, and the upper surface of the plant growth substrate and the seed mold bag is made of double-layer steel bar net and sandwiched with porous linen to facilitate plant growth.
The concrete mold bags 4 are filled with fine aggregate mold bag concrete, the water storage base mold bags 7 are filled with porous water absorption materials such as ceramsite and the like, the plant growth base and the seed mold bags 10 are filled with cultivated soil and plant seeds, and the seeds are selected according to local growth environments.
The construction method of the ecological protection structure of the fine-grained soil immersed embankment side slope of the highway comprises the following steps:
step 1: the method comprises the steps of treating a first layer of roadbed, treating a roadbed foundation 1, reinforcing and leveling the roadbed before filling a embankment, selecting a combined mould bag with the same height according to the layered filling thickness of the roadbed, then installing concrete mould bags 4 to two sides of the roadbed according to the figure 1, wherein the size of each concrete mould bag 4 is 0.2m multiplied by 1.5m multiplied by 1m (height multiplied by length multiplied by width), connecting the concrete mould bags 4 and the roadbed foundation 1 at a designed position by using connecting anchor rods 3, filling the concrete of the mould bags through a concrete filling hole 5 until the mould bags are compact, sealing a concrete filling opening after the whole mould bags are filled, paving a first layer of fine concrete after the concrete is initially set for 24 hours, filling the fine concrete between the mould bags at two sides as filling materials to carry out first layer roadbed compaction filling, wherein the roadbed compaction filling thickness is 0.2m, and compacting to the designed compaction degree by using a light wheel road press.
Step 2: and (3) treating the second roadbed, completing the pouring of the mould bag concrete and the roadbed filling according to the same procedure as the first roadbed filling, connecting the concrete mould bag 4 and the first fine-grained soil filling layer at a designed position by using a connecting anchor rod 3, filling the mould bag concrete to be compact through a concrete filling hole 5, paving the second fine-grained soil after the concrete is initially set for 24 hours, and compacting to the designed compaction degree by adopting a smooth wheel road roller.
And step 3: and (5) repeating the step (2) to complete all the layered roadbed filling work in sequence.
And 4, step 4: installing a water storage base mold bag 7 of a first layer of roadbed, selecting a water storage base mold bag 7 with proper specification according to the size of the concrete mold bag 4 and the design slope rate of the roadbed side slope, installing the water storage base mold bag 7 on the roadbed foundation 1, fixing the water storage base mold bag 7 on the outer side of the concrete mold bag 4 by using a reserved connecting device I6, filling ceramsite materials through a water storage base injection hole 8, and sealing the water storage base injection hole 8 after the water storage base mold bag is tightly filled.
And 5: installing the plant growth base and seed mold bag 10 of the first layer of roadbed, selecting the plant growth base and seed mold bag 10 with proper specification according to the size of the concrete mold bag 4 and the design slope rate of the roadbed side slope, fixing the plant growth base and seed mold bag 10 at the outer side of the concrete mold bag 4 by using a reserved connecting device I6, fixing the plant growth base and seed mold bag at the side upper part of the water storage base mold bag 7 by using a reserved connecting device II9, then injecting mixed planting soil and plant seeds through the plant growth base and seed injection hole 11, and sealing the plant growth base and seed injection hole 11 after being filled compactly.
Step 6: and (5) repeating the step (5) to sequentially complete the installation of all the water storage base mold bags 7, the plant growth base mold bags and the seed mold bags 10, and then sprinkling water on the upper surface of the plant growth base mold bags for maintenance to ensure that the plants grow well.
Example 2:
as shown in fig. 1-4, an ecological protection structure of a fine soil-immersed embankment side slope of a road and a construction method thereof are the same as in embodiment 1, wherein:
the concrete mold bag 4 is formed by inserting hard plastic plates into double-layer geotextile, is in a regular cube shape, has the size of 0.3m multiplied by 1.5m multiplied by 1m (height multiplied by length multiplied by width), is provided with a concrete injection hole 5 on the upper surface for injecting concrete, and has the aperture of 5-10cm in the concrete injection hole 5. The height of the concrete mold bag 4 is consistent with that of the fine sand filling layer 2 filled once, the filling height of a single-layer roadbed is also 0.3m, and the shape of a regular cube of concrete is favorable for ensuring that the masonry mold bag forms a closed water-proof space and preventing external water from permeating fine soil.
Example 3:
as shown in fig. 1-4, an ecological protection structure of fine soil immersed embankment side slope of highway and a construction method thereof are provided, the construction steps are the same as those in example 1, wherein:
the concrete mold bag 4 is formed by inserting steel plates into double-layer geotextile, is in a regular cube shape, has the size of 0.2m multiplied by 1.5m multiplied by 1m (height multiplied by length multiplied by width), is provided with a concrete injection hole 5 on the upper surface for injecting concrete, and has the aperture of 5-10cm in the concrete injection hole 5. The height of the concrete mold bag 4 is consistent with that of the fine sand filling layer 2 filled once, the filling height of the single-layer roadbed is also 0.2m, and the shape of the square body made of concrete is beneficial to ensuring that the masonry mold bag forms a closed water-proof space and preventing external water from permeating fine soil.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.
Claims (10)
1. The utility model provides an ecological protective structure of highway fine grain soil immersion embankment side slope which characterized in that: the multifunctional combined mold bag comprises a roadbed foundation, connecting anchor rods, fine sand filling layers, concrete mold bags, a water storage base mold bag, a plant growth base and seed mold bags, a connecting device I and a connecting device II, wherein a plurality of fine sand filling layers which are arranged in a step shape are filled at the top of the roadbed foundation, the concrete mold bag is fixed at the outer side of each fine sand filling layer through the connecting anchor rods, a concrete injection hole is formed in the concrete mold bag, the outer side of each concrete mold bag is connected with the water storage base mold bag through the connecting device I, the water storage base injection hole is formed in the water storage base mold bag, the plant growth base and seed mold bag is connected with the outer side of each water storage base mold bag through the connecting device II, the plant growth base and seed mold bag are connected with the concrete mold bags through the connecting device I, the plant growth base and seed injection hole are formed in the plant growth base and seed mold bags, and the concrete mold bags, the water storage base mold bags and seed mold bags jointly form the multifunctional combined mold bag, the multifunctional combined mould bag fills the outer sides of all the fine sand filling layers distributed in a step shape into embankment slope, the concrete mould bag forms a stable embankment slope structure system and a water-resisting structure layer, and the water-storing base mould bag, the plant growth base and the seed mould bag form a green slope protection system of the slope together.
2. The ecological protection structure of fine-grained soil immersed road embankment side slope of road according to claim 1, characterized in that: the connecting device I comprises a concave clamping groove arranged at the end of the concrete mold bag and convex bayonets respectively arranged on the water storage base mold bag, the plant growth base and the seed mold bag, and the concave clamping groove is matched and clamped with the convex bayonets.
3. The ecological protection structure of fine-grained soil immersed road embankment side slope of road according to claim 1 or 2, characterized in that: the connecting device II comprises a bayonet arranged on the upper surface of the water storage base mold bag and hooks arranged on the lower surfaces of the plant growth base mold bag and the seed mold bag, and the hooks are hung and buckled on the bayonet.
4. The ecological protection structure of fine-grained soil immersed road embankment side slope of road according to claim 1, characterized in that: the concrete mold bag is formed by inserting hard plastic plates or steel plates into double-layer geotextile, the shape of the concrete mold bag is a regular cube, and the height of the concrete mold bag is consistent with the height of a fine sand filling layer filled at a single time.
5. The ecological protection structure of fine-grained soil immersed road embankment side slope of road according to claim 4, characterized in that: the water storage base mold bag is in a right-angle triangular prism shape, the height of the water storage base mold bag is half of the height of the concrete mold bag, and the ratio of the height to the length of the water storage base mold bag is consistent with the designed slope rate of the roadbed side slope.
6. The ecological protection structure of fine-grained soil immersed road embankment side slope of road according to claim 5, characterized in that: the upper inclined plane of the water storage base mold bag is made of permeable geotextile, and the other 4 surfaces are made of double-layer geotextile and hard plastic plates inserted in the geotextile.
7. The ecological protection structure of fine-grained soil immersed road embankment side slope of road according to claim 5, characterized in that: the plant growth base and seed mold bag is in a shape of a parallel trapezoidal prism, the size of the lower inclined surface of the plant growth base and seed mold bag is completely consistent with that of the upper inclined surface of the water storage base mold bag, the upper inclined surface is parallel to the lower inclined surface, the length of the inclined edge a is half of the height of the concrete mold bag, the ratio of the inclined edge a to the inclined edge b is consistent with the designed slope rate of the roadbed slope, and the inclined edge a is perpendicular to the inclined edge b.
8. The ecological protection structure of fine-grained soil immersed road embankment side slope of road according to claim 7, characterized in that: the plant growth substrate and the seed mold bag are surrounded by a double-layer geotextile and a hard plastic board inserted in the double-layer geotextile, the lower surface of the plant growth substrate and the seed mold bag is made of permeable geotextile, and the upper surface of the plant growth substrate and the seed mold bag is made of double-layer steel bar net sandwiched porous linen.
9. The ecological protection structure of fine-grained soil immersed road embankment side slope of road according to claim 1 or 7, characterized in that: the concrete mold bags are filled with fine aggregate mold bag concrete, the water storage base mold bags are filled with porous water absorption materials such as ceramsite and the like, and the plant growth base and the seed mold bags are filled with ploughing soil and plant seeds.
10. The ecological protection structure of fine-grained soil immersed road embankment side slope of road according to claim 1, characterized in that: the construction method of the ecological protection structure of the fine-grained soil immersed embankment side slope of the highway comprises the following steps:
step 1: the method comprises the following steps of firstly, treating a roadbed, namely, selecting combined mould bags with the same height according to the layered filling thickness of the roadbed, connecting the concrete mould bags and the roadbed foundation at a designed position by using a connecting anchor rod, filling the concrete of the mould bags to be compact through a concrete filling hole, paving a first layer of fine soil after the initial setting of the concrete is completed within 24 hours, and compacting to a designed compaction degree by using a photo wheel road compactor;
step 2: treating a second roadbed layer, connecting a concrete mold bag and a first fine-grained soil filling layer at a designed position by using a connecting anchor rod, filling the concrete of the mold bag to be compact through a concrete filling hole, paving a second fine-grained soil layer after the initial setting of the concrete is finished for 24 hours, and compacting to a designed compaction degree by using a smooth wheel roller;
and step 3: repeating the step 2 to complete all the layered roadbed filling work in sequence;
and 4, step 4: installing a water storage base mold bag of a first layer of roadbed, selecting a water storage base mold bag with proper specification according to the size of the concrete mold bag and the design slope rate of a roadbed side slope, installing the water storage base mold bag on the roadbed foundation, fixing the water storage base mold bag outside the concrete mold bag by using a reserved connecting device I, filling a ceramsite material through a water storage base injection hole, and sealing the water storage base injection hole after the water storage base mold bag is tightly filled;
and 5: installing a plant growth base and a seed mold bag of a first layer of roadbed, selecting a plant growth base and a seed mold bag with proper specifications according to the size of the concrete mold bag and the design slope rate of a roadbed side slope, fixing the plant growth base and the seed mold bag outside the concrete mold bag by using a reserved connecting device I, fixing the plant growth base and the seed mold bag above the side of a water storage base mold bag by using a reserved connecting device II, then injecting mixed plowing soil and plant seeds through a plant growth base and seed injection hole, and sealing the plant growth base and seed injection hole after the plant growth base and the seed injection hole are filled and compacted;
step 6: and (5) repeating the step 5 to sequentially complete the installation of all the water storage base mold bags, the plant growth base mold bags and the seed mold bags, and then sprinkling water on the upper surface of the plant growth base mold bags for maintenance to ensure that the plants grow perfectly.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011369537.7A CN112391891B (en) | 2020-11-30 | 2020-11-30 | Highway fine-grained soil soaking embankment side slope ecological protection structure and construction method |
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| CN202011369537.7A CN112391891B (en) | 2020-11-30 | 2020-11-30 | Highway fine-grained soil soaking embankment side slope ecological protection structure and construction method |
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| CN112391891B CN112391891B (en) | 2022-06-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115324080A (en) * | 2022-08-17 | 2022-11-11 | 国网安徽省电力有限公司建设分公司 | Multifunctional intelligent open-air rock type slope repairing system |
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| CN108708350A (en) * | 2018-05-18 | 2018-10-26 | 长沙理工大学 | A kind of ecological slope protection structure and its construction method |
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| DE10250462A1 (en) * | 2002-10-30 | 2003-09-25 | Vgs Baugrundinstitut Dr Koehle | Sandbag for reinforcing dykes, etc. is made from water-permeable, wear-resistant geotextile and has rigid filling tube fitted in top with connection which projects outside bag |
| CN1900432A (en) * | 2005-07-21 | 2007-01-24 | 张宇顺 | Green edge slope structure |
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| CN112391891B (en) | 2022-06-03 |
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