CN211646422U

CN211646422U - Highway cutting side slope ecological protection system

Info

Publication number: CN211646422U
Application number: CN201922067495.0U
Authority: CN
Inventors: 梁斌; 高乐星; 何杰; 李帅; 刘杰; 郑辉
Original assignee: Hunan University of Technology
Current assignee: Hunan University of Technology
Priority date: 2019-11-26
Filing date: 2019-11-26
Publication date: 2020-10-09
Anticipated expiration: 2029-11-26

Abstract

The utility model discloses an expressway cutting slope ecological protection system, which comprises a slope, a beam frame, an ecological porous fiber cotton module, a porous water pipe and a water storage tank; the beam frame is enclosed by a cross beam and a longitudinal beam which are embedded in a side slope rock-soil layer, and grass planting bricks are laid in the lattice beam frame; the ecological porous cellucotton modules are embedded along the periphery inside the lattice beam frame, porous water pipes are arranged in the centers of the ecological porous cellucotton modules and are mutually connected and communicated in a section of range; a water storage tank is arranged at the top of the slope, and a water conduit on the water storage tank is connected with a porous water pipe in the ecological porous cotton. The utility model discloses optimize the green soil who has existed in having solved highway cutting side slope ecological protection and easily washed away, the protection system drainage ability of holding water is not enough, technical problem such as plant watering maintenance difficulty, make the protection whole become a real ecosystem, improved the ecological protection quality of side slope, reduced the maintenance cost.

Description

Highway cutting side slope ecological protection system

Technical Field

The utility model relates to a highway side slope protection field, more specifically relates to a highway cutting side slope ecological protection system.

Background

A large number of cut excavation side slopes are frequently encountered in mountain area crossing sections in highway construction, the size and the form of a building are designed according to functional requirements only for traditional protection forms of similar side slopes, such as cement mortar spraying, anchor rods, anchor cable frame beams and the like, the protection forms are not or rarely comprehensively considered from the aspects of engineering technology aesthetics, environmental art or landscape and the like, a large number of exposed and unaesthetic building facilities are formed, the similar building facilities are directly exposed by wind and rain and exposed to high temperature, and the durability of the building facilities is easy to be damaged. Modern slope engineering protection design concepts are more and more considered to blend protection facilities into the surrounding ecological environment, particularly, a part of business trip high-speed road sections gradually begin to bring the 'traffic blending' engineering design concept into the key consideration range, and slope ecological protection measures gradually replace the traditional protection form to become a new mode vigorously advocated in slope protection.

The slope ecological protection mainly utilizes plant roots to fix slope soil, utilizes the diameter and leaves of plants to cover a slope body so as to reduce the erosion degree of water flow to the slope surface and the erosion degree of splashing, reduces the day and night temperature difference of rock-soil bodies, relieves the problems of rock weathering, water and soil loss and the like caused by the fact that the slope surface is blown and eroded, increases the stability of the slope, reduces noise, protects the environment, and improves the visual aesthetic feeling of road driving and the quality of travel.

From the existing side slope ecological protection engineering site, a plurality of problems exist:

the lattice areas of anchor rods, anchor cable lattice beams, arch-shaped and herringbone frameworks and other technologies commonly used for slope protection are large, flood peak water flows often appear in a short time under heavy rain conditions to overflow the lattice, soil bodies and plants are washed away and fall off and flow away along with water, and slope vegetation is easy to lose soil and degrade after long-term action.

The wrong design concept of 'ecological protection, namely grass planting' is that each sash for protection is a closed grass planting tank, which is not beneficial to the exchange of water, gas, nutrients, microorganisms and the like in adjacent sashes, a real ecological system is difficult to form, rainwater is accumulated at the lower part in the sash and cannot be discharged in time, and the root system of a plant is in a water-rich and moist state for a long time, so that the rotten root of the plant is easy to decay.

The water-holding capacity of the plant soil layer and the lattice beams is not strong, the plants are easy to lack water and dry, the frequency of maintenance and the quality of maintenance cannot be guaranteed by watering the plants by using a watering cart, particularly, under the conditions of hot insolation, dry weather and windy climate, the water-holding capacity of the lattice beam concrete blocks and the rock-soil body is not strong, the maintenance water loss is fast, the maintenance frequency is increased, the maintenance cost is increased, and the water resource waste is caused.

Frequent watering maintenance of the plants by the watering cart occupies the emergency lane of the highway for a long time, and particularly, when the traffic flow is large, serious potential safety hazards exist in the method, the watering cart moves slowly in the emergency lane, the warning board is difficult to set in time, and the problem that constructors stay in the emergency lane for a long time is solved, so that the degree of the potential safety hazards is further increased.

Disclosure of Invention

The utility model discloses in protecting to current side slope, slope body vegetation easily lacks soil degradation, and plant roots is in rich water humid state for a long time, easily causes the rotten root of plant to decay, and the ground body is not strong with water holding capacity, and the maintenance water shunts the very fast problem of losing. The highway cutting slope ecological protection system has the advantages that the durability, the scouring resistance and the water storage and drainage performance of a green soil layer of the slope ecological protection system are improved, and the technical problems of irrigation and maintenance of ecological plants and the like are solved in an optimized mode.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an expressway cutting slope ecological protection system comprises a slope, a beam frame, grass planting bricks, an ecological porous fiber cotton module, a porous water pipe and a water storage tank; the beam frame is composed of a plurality of cross beams and longitudinal beams embedded in the rock soil layer of the side slope, and grass planting bricks are paved inside the lattice beam frame; ecological porous cellucotton modules are embedded along the periphery inside the lattice beam frame, a porous water pipe is arranged in the center of each ecological porous cellucotton module, and the porous water pipes are mutually connected and communicated in a section of range; the water storage tank is arranged at the top of the slope, and a water conduit on the water storage tank is connected with a porous water pipe in the ecological porous cotton.

Furthermore, the cross beam and the longitudinal beam are both formed by pouring pervious concrete.

Furthermore, the cross part of the cross beam and the vertical beam is fixed on the slope body through an anchor rod.

Furthermore, holes are uniformly distributed on the periphery of the porous water pipe body, and a switch control device is arranged at the bottom of the lowest stage of pipe.

Furthermore, the water storage tank also comprises a water conduit, a water injection pipe and a water injection switch; the water pipe is connected with the water injection pipe and the water pipe respectively, and the water injection switch is arranged on the water pipe.

Furthermore, an overhaul step is arranged under the water storage tank.

Drawings

FIG. 1 is a schematic view of the overall structure of a slope ecological protection system;

FIG. 2 is a sectional view of the slope ecological protection system;

FIG. 3 is a layout diagram of adjacent beam frames, ecological porous cellucotton and grass planting bricks;

FIG. 4 is a schematic structural diagram of a module of ecological porous cellucotton;

wherein, 1 is an anchor rod; 2 is a grouted rubble footing; 3, a maintenance step; 4, planting grass on the grass planting bricks; 5 is a porous water pipe; 6 is a lattice beam frame; 7 is ecological porous cellucotton; 8 is a water storage pipe; 9 is an original slope body; 10 is a plant; 11 is grouted block stone; 12 is a grass planting brick; 13 is a green soil layer; 14 are holes.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description.

As shown in fig. 1-4, an expressway cutting slope ecological protection system comprises a plurality of beams and longitudinal beams embedded into an original soil layer of a slope, wherein the beams and the longitudinal beams form a plurality of beam frames, reinforcing steel bars are arranged inside the beam frames, and the beam frames are formed by pouring pervious concrete, and the pervious concrete can be set to be different colors so as to be coordinated with the surrounding environment; rectangular ecological porous cellucotton modules are embedded around the lattice beam framework, ecological porous cellucotton is embedded around the whole lattice beam framework, the preferred width of the module is more than 300mm, the preferred height of the module is more than 500mm, water pipes penetrating through the ecological porous cellucotton are arranged in the center of the ecological porous cellucotton, holes are formed in the water pipes, the preferred diameter of each hole is 5mm-10mm, connectors are arranged at two ends of each water pipe, adjacent ecological porous cellucotton modules are connected through the water pipe connectors, and the water pipes are communicated with each other in a section of slope range; the interior of the lattice beam frame is laid with grass planting bricks, the edges of the grass planting bricks are tightly attached to the inner edge of the lattice beam frame, the hollow part is used for planting grass and irrigating, and the lower parts of the grass planting bricks are provided with geotextiles and leveling layers.

The lattice beam frame is formed by pouring pervious concrete, a pervious concrete surface layer is composed of stones, cement, a pervious concrete reinforcing agent, toner and water, a surface layer is sprayed with a finishing agent (a protective agent and a sealing agent) to prevent high-temperature insolation corrosion, a base layer at the lower part of the pervious concrete surface layer is composed of the stones, the cement, the pervious concrete reinforcing agent and the water, and the thickness is determined according to the design consideration of the field situation; the permeable concrete has pores which can enable rainwater to rapidly infiltrate under the condition of heavy rain, the flow of water flow on the surface of a slope body is reduced, the phenomenon that the soil is washed away and flows away due to the fact that the flood peak rainwater overflows the lattice is avoided, and meanwhile, the permeable concrete can effectively prevent water from accumulating at the bottom of the lattice beam frame after rain, so that the phenomenon of root rot of plants due to the fact that long-time accumulated water in a greening soil layer at the position cannot be discharged is avoided; and rainwater can be longitudinally drained from top to bottom, so that the transverse drainage pressure of the lattice beam frame is relieved, and the transverse scouring degree of the bottom soil is reduced to a certain extent. Furthermore, the pervious concrete is beneficial to the mutual exchange of water, gas, nutrients, microorganisms and the like between adjacent lattice girder frames, so that the whole protection device system becomes a real recyclable ecological system.

The grass planting bricks are laid in the lattice beam frame, the grass planting bricks can be spliced and laid in different colors and shapes according to actual requirements and aesthetic feeling design, such as a Chinese character ' mi ', a rectangle, a 8 ' shape and the like, and different marks and informed contents can be reasonably embedded into the grass planting bricks according to requirements; the thickness of the grass planting brick is preferably larger than 50mm, the hollow part of the grass planting brick is used for planting grass and irrigating, and the type of the grass and irrigating can be selected according to the local climate environment; the method comprises the following steps of laying a green soil layer and a leveling layer under grass planting bricks, cleaning an original slope surface and compacting and rolling the slope surface during construction, laying a cement mortar leveling layer of 20mm-50mm, laying a layer of geotextile on the leveling layer, covering the green soil of a base layer on the upper portion of the geotextile with the thickness larger than 200mm, laying the grass planting bricks on the green soil, planting grass seeds, spreading soil to enable the base layer to be as high as the top end of the grass planting bricks, and then carrying out periodic maintenance.

The ecological porous fiber cotton is made of natural ecological raw materials such as basalt and dolomite, has the characteristics of large porosity, small volume weight, high water absorption rate and the like, and has the functions of water absorption, water retention, water drainage and the like. Ecological porous fiber cotton is horizontally and longitudinally paved and embedded along the inner wall of a lattice beam frame, on one hand, the ecological porous fiber cotton can quickly absorb rainwater (including soil transverse water seepage and pervious concrete seepage) seeping from the surface of a slope body during rainfall, and the rainwater is stored in the ecological porous fiber cotton, so that the short-time flood peak drainage pressure of the whole ecological protection system is greatly reduced, furthermore, a through porous water pipe is arranged at the central part of the ecological porous fiber cotton, a control switch is arranged at the position where a drainage ditch at the lowest end of the porous water pipe is exposed, the control switch is normally in an open state, after the ecological porous fiber cotton is saturated, the absorbed excessive water can enter the pipeline through holes on the water pipe, the water can be discharged into a bottom drainage ditch along the ecological porous fiber cotton and the internal water pipe, the drainage pipe has the effect of a drainage pipe to a certain extent, and the drainage pressure of the whole system during rain storm is relieved, the phenomenon that the water flow in the lattice beam frame overflows the lattice to cause the erosion of the soil vegetation is effectively prevented; on the other hand, because of the dynamic balance relation of the consistent water content between the ecological porous fiber cotton and the soil, the excellent water storage effect of the ecological porous fiber cotton can play a role in auxiliary irrigation on the green soil layer, particularly under the condition that rainstorm and hot weather frequently appear in summer alternate, the ecological porous fiber cotton can absorb water and store water during rainstorm, the rapid loss and the evaporation degree of rainwater are reduced, the rainwater stored in the ecological porous fiber cotton can be continuously absorbed by the soil during hot weather, so that the dynamic balance of the water content between the ecological porous fiber cotton and the soil is achieved, the good effect of automatic auxiliary irrigation on the green soil layer in the 'on-site storage and on-site absorption' is achieved, and the permanent greening of the green soil layer is facilitated. The outer part of the ecological porous fiber cotton comprises a layer of geotextile, the geotextile can well prevent rainwater or soil particles, suspended matters and the like carried by irrigation water from entering the ecological porous fiber cotton to influence the water absorption, water retention and drainage effects of the ecological porous fiber cotton, and has the function of cleaning the rainwater or irrigation water which is absorbed by green soil and is reused.

A water storage tank for storing and replenishing water is arranged at the top of the side slope, a water injection hole and a water diversion pipe are arranged on the water storage tank, the water injection hole is positioned at the upper end of the water storage tank, the water diversion pipe is positioned at the bottom end of the water storage tank, the water diversion pipe is connected with a water pipe in the ecological porous fiber cotton, a control switch is arranged on the water diversion pipe, and the water in the water storage tank can be controlled to flow into the water pipe by opening or closing; the water storage tank is provided with a cover plate which is closed to ensure the cleanness of water in the tank, the cover plate can be arranged in a roof shape, and the top end of the cover plate can be planted with rattan-shaped or drooping plants such as ivy, lespedeza bicolor and the like so as to coordinate the water storage tank with the surrounding environment; when ecological plants in dry season need manual irrigation and maintenance, a water conduit switch can be opened, a water conduit bottom end control switch is closed, water in the water storage tank automatically flows into the water conduit under the action of hydraulic pressure, gradually infiltrates into the surrounding ecological porous cellucotton through holes in the water conduit, and after the ecological porous cellucotton is saturated with water, the water gradually infiltrates into greening soil through the ecological porous cellucotton to achieve the purpose of irrigation and maintenance. The irrigation and maintenance system can perform fixed-point maintenance on ecological protection plants on one hand, namely, only the irrigation vehicle is used for injecting water into the water storage tank at fixed points through the water injection holes, so that the potential safety hazard that the conventional watering vehicle occupies a high-speed emergency lane for irrigation and maintenance in a long period is avoided, the requirement of multiple times of irrigation can be usually met by filling water into the water storage tank at one time, necessary facilities such as a pressure water pump and a circuit are not needed for irrigation and maintenance, and automatic irrigation and maintenance operation of the ecological plants can be performed only by opening a water diversion pipe switch and closing a water pipe control switch, so that manpower and material resources are greatly saved; on the other hand, after the single irrigation maintenance is finished, each ecological porous cellucotton is in a water-rich and water-saturated state, and compared with a green soil layer, the ecological porous cellucotton has stronger water storage and holding capacity, can automatically supplement water to surrounding green soil for a long time, and greatly reduces the irrigation maintenance frequency.

The utility model optimally solves partial technical problems of highway cutting slope ecological protection, the system can absorb, store, seep, discharge and slowly release and recycle rainwater, effectively prevents the rainwater from eroding green soil and plants, greatly improves the water retention and drainage characteristics of the protection system and the capability of coping with severe weather, and can automatically supplement water to the surrounding green soil for a long time; the semi-automatic water supply system avoids the potential safety hazard that the conventional watering cart maintains plants to occupy the emergency lane of the expressway for a long time, and reduces the frequency of required maintenance and the waste of water resources. The utility model discloses promoted ecosystem virtuous circle to the at utmost, promoted road driving vision aesthetic feeling and people's trip quality, followed the new theory of engineering design of highway "the integration of travelling".

The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutes or changes made by the technical personnel in the technical field on the basis of the utility model are all within the protection scope of the utility model.

Claims

1. The utility model provides an ecological protection system of highway cutting side slope which characterized in that: comprises a side slope, a beam frame, grass planting bricks, an ecological porous cellucotton module, a porous water pipe and a water storage tank; the beam frame is composed of a plurality of cross beams and longitudinal beams embedded in the rock soil layer of the side slope, and grass planting bricks are paved inside the lattice beam frame; ecological porous cellucotton modules are embedded along the periphery inside the lattice beam frame, a porous water pipe is arranged in the center of each ecological porous cellucotton module, and the porous water pipes are mutually connected and communicated in a section of range; the water storage tank is arranged at the top of the slope, and a water conduit on the water storage tank is connected with a porous water pipe in the ecological porous cellucotton module.

2. The highway cutting slope ecological protection system according to claim 1, wherein the cross beams and the longitudinal beams are both formed by pouring pervious concrete.

3. The highway cutting slope ecological protection system according to claim 1, wherein the intersection of the cross beam and the vertical beam is fixed on the slope body through an anchor rod.

4. The highway cutting slope ecological protection system according to claim 1, wherein the plurality of holes are evenly arranged around the porous water pipe body, and the bottom of the lowest stage of pipe is provided with a switch control device.

5. The highway cutting slope ecological protection system according to claim 1, wherein the water storage tank further comprises a water conduit, a water injection pipe and a water injection switch; the water pipe is connected with the water injection pipe and the water pipe respectively, and the water injection switch is arranged on the water pipe.

6. The highway cutting slope ecological protection system according to claim 1, wherein an overhaul step is arranged right below the water storage tank.