CN215329947U

CN215329947U - Ecological slope protection structure of unified side slope of water conservation and drainage

Info

Publication number: CN215329947U
Application number: CN202120766265.8U
Authority: CN
Inventors: 董志良; 王德咏; 曾庆军; 王婧; 胡君龙; 周红星; 邱青长
Original assignee: CCCC Fourth Harbor Engineering Co Ltd; CCCC Fourth Harbor Engineering Institute Co Ltd; Guangzhou Harbor Engineering Quality Inspection Co Ltd
Current assignee: CCCC Fourth Harbor Engineering Co Ltd; CCCC Fourth Harbor Engineering Institute Co Ltd; Guangzhou Harbor Engineering Quality Inspection Co Ltd
Priority date: 2021-04-14
Filing date: 2021-04-14
Publication date: 2021-12-28
Anticipated expiration: 2031-04-14

Abstract

The utility model provides a side slope ecological slope protection structure capable of keeping water and drainage uniformly, which comprises a water keeping layer, a drainage layer, a degradable geonet, a vegetation layer and a plurality of layers of geotextiles which are sequentially laid on the surface of a side slope, wherein the water keeping layer, the drainage layer, the geonet and the vegetation layer are sequentially laid on the surface of the side slope from inside to outside, and the plurality of layers of geotextiles are respectively arranged among the water keeping layer, the drainage layer, the geonet and the side slope to form a composite slope protection structure. According to the utility model, through the matched use of the water retention layer and the drainage layer, the problems of inconsistent water retention and drainage structure and low efficiency of the traditional ecological slope are solved, on one hand, the water retention structure without concrete is realized and is coordinated and unified with the surrounding environment, on the other hand, rainwater seeped from the drainage layer can be absorbed and stored by the water retention layer, so that moisture for long-term vegetation growth is provided, and the cost of manual maintenance of the ecological slope engineering is reduced.

Description

Ecological slope protection structure of unified side slope of water conservation and drainage

Technical Field

The utility model belongs to the technical field of slope ecological protection, and particularly relates to a slope ecological slope protection structure with unified water retention and drainage.

Background

In the initial stage of operation of the existing engineering slope, vegetation does not grow up and cannot play a role in reinforcing and consolidating soil, and the surface layer of the cutting slope is washed by (rain) water flow and permeates soil body to soften soil body and form shallow layer damage. The traditional slope protection structure needs to build dense drainage ditches on the slope surface to discharge surface runoff, so that on one hand, the fusion and coordination of the ecological slope and the surrounding natural environment are destroyed, on the other hand, the production process of a large amount of masonry structure materials causes heavy environmental burden, and the development concept of energy conservation and emission reduction is contrary to.

In addition, in subtropical regions, the water requirement of vegetation in the ecological side slope is large, and the traditional technology needs manual irrigation or large-area drip irrigation networks are arranged to enable the vegetation layer to keep a certain water content, so that the requirement of plant growth is met. Intangible, add additional investment. The rainwater falling on the surface of the side slope in rainy season is an important source for supplementing the moisture of the vegetation layer, but is often evaporated and dissipated to the atmospheric environment because of no water retention measures, and the utilization efficiency is extremely low.

The traditional ecological side slope separates drainage from water retention, ignores the internal relation between the drainage and the water retention, easily causes a series of problems of resource waste, environmental damage and the like, and also increases the extra cost of engineering projects.

SUMMERY OF THE UTILITY MODEL

In view of the above, the utility model provides a slope ecological slope protection structure with unified water retention and drainage, which realizes both slope water retention and drainage through a multilayer composite structure, and effectively solves the problems of inconsistent water retention and drainage structure and low efficiency of the traditional ecological slope.

The utility model is realized by the following technical scheme:

the utility model provides an ecological slope protection structure of unified side slope of guarantor's drainage, is used for hydrophobic drainage blanket, degradable geotechnological net, plant living layer and a plurality of layers of geotechnological cloth including being used for the water storage, guarantor's water blanket, drainage blanket, geotechnological net and plant living layer from interior and lay on the side slope surface according to the preface outward, a plurality of layers of geotechnological cloth set up respectively between guarantor's water blanket, drainage blanket, geotechnological net and the side slope.

Compared with the prior art, the utility model has the following technical effects:

1. the drainage layer is arranged, rainwater seeps into the water retention layer to supplement water for plant growth, so that the functions of the drainage layer and the water retention layer are effectively connected, the utilization efficiency of the rainwater is improved, and the cost is saved;

2. the utility model combines the spray-seeding slope protection vegetation with the degradable geonet, the vegetation layer is sprayed on the geonet and sinks into the geonet under the action of gravity to form a composite structure, and a protection system with continuous growth capacity is arranged on the slope component; meanwhile, the erosion resistance and the rainwater scouring capability of the geonet in the early and middle stages are fully utilized, the surface soil of the side slope is prevented from being directly eroded by rainwater, the scouring energy and the surface runoff speed of the storm runoff are reduced, and good germination conditions are provided for vegetation; along with vegetation, the vegetation root system is in the same place with the geotechnological net entanglement, plays the muscle effect of shearing that adds to the effort dispersion that will erode is to whole degradable geotechnological net even whole domatic on, and along with the lapse of time, under soil microorganism's effect, the geotechnological net degrades gradually and becomes fertilizer, provides fertility and organic matter for vegetation growth, reduces soil secondary pollution.

Further, this slope protection structure still includes the stock that is used for fixing, the stock includes main stock and vice stock, main stock and the crisscross setting of interval such as vice stock are on the side slope, and in its one end was squeezed into the side slope, the other end was worn out domaticly to fix protect water layer, water drainage blanket, geotechnological net and geotechnological cloth.

Further, the slope protection structure is also provided with a water intercepting and draining system, and the water intercepting and draining system comprises a water intercepting ditch arranged at the top of the slope and/or a water draining ditch arranged at the bottom of the slope. When the rainfall intensity is high, the slope top is provided with the intercepting ditch to intercept rainwater, so that rainwater is prevented from scouring the slope surface, the slope bottom is provided with the drainage ditch, so that water on the slope surface is drained out of the slope surface range as soon as possible, and the rainwater is prevented from further infiltrating.

Furthermore, a plurality of transverse grooves are formed in the surface of the slope protection structure so as to increase the roughness of the slope.

Drawings

Fig. 1 is a schematic structural view of a slope protection structure according to the present invention;

FIG. 2 is a schematic view of a slope surface water retaining and draining composite layer of the slope protection structure of the present invention;

fig. 3 is a schematic diagram of distribution of anchor rods of the slope protection structure of the present invention.

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 specification, but the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and the scope of the present invention is not limited thereto.

Referring to fig. 1, the present invention provides a slope ecological slope protection structure with uniform water retention and drainage, which includes a water retention layer 2, a drainage layer 4, a geonet 6 and a vegetation layer 7, wherein the water retention layer 2, the drainage layer 4, the geonet 6 and the vegetation layer 7 are sequentially laid on the surface of a slope from inside to outside to form a slope protection structure.

As shown in fig. 2, the first geotextile 1 is arranged between the slope surface and the water retention layer 2 to isolate the slope surface from the water retention layer, so that the problem that the water retention effect of the water retention layer is influenced by mixing slope surface materials and water retention layer materials under long-term working conditions is avoided; the second geotextile 3 is arranged between the water retention layer 2 and the drainage layer 4 to isolate the water retention layer from the drainage layer, so that the water retention layer material is prevented from being mixed into the drainage layer to block a drainage channel; set up third geotechnological cloth 5 between drainage blanket 4 and geotechnological net 6, keep apart geotechnological net, avoid debris to block up the drainage blanket.

Water-retaining layer 2 comprises water-retaining material, in this embodiment, adopts the prescription of polyacrylamide water-retaining agent + bentonite + water, and three's proportion is 1: 5: 3, the water retaining layer is paved on the first geotextile 1 by a method of artificial filling and mechanical tamping, the thickness of the first geotextile is kept to be 15-20 cm, the water retaining layer is used for retaining infiltrated rainwater in rainy seasons and keeping the rainwater in the layer, evaporation is reduced, and water is supplied to vegetation above through the water absorption effect of the vegetation root system in dry seasons.

The drainage layer 4 comprises porous material, and this embodiment adopts one or more in coarse sand, rubble or the porous ceramic of light, lays on second geotechnological cloth 3 through the method of artifical filling + mechanical ramming, keeps its thickness within 10cm, and the effect of drainage layer is to provide the quick discharge channel who infiltrates the rainwater, and in rainy season, rainfall intensity is great, need discharge the rainwater outside domatic scope fast, avoids further infiltration, influences side slope stability.

The geotechnical net 5 adopts plant fiber such as degradable bamboo fibre, coconut fibre or fibrilia to weave and forms, forms network structure, for the vegetation layer 7 provides the reinforcement effect, provides the scour resistance ability, and along with the time, under soil microorganism's effect, geotechnological net degrades gradually and becomes fertilizer, provides fertility and organic matter for vegetation growth, reduces soil secondary pollution.

As shown in fig. 1 and 3, the present embodiment is provided with a bolt 8 for reinforcement, which includes a main bolt 81 and a sub bolt 82, the main bolt 81 is made of pine, has a diameter greater than 80mm, and has one end sharpened and driven into a slope, and the other end left on the surface of the slope, the sub bolt 82 is made of a bamboo rod, has a diameter of 20mm, and has one end sharpened and driven into the slope, and the other end left on the surface of the slope; the main anchor rods 81 and the auxiliary anchor rods 82 are driven into the side slope at intervals of 500mm in the slope inclination direction, and the distance between the transverse main anchor rods 81 or the transverse auxiliary anchor rods 82 is 1000 mm.

For improving side slope stability, this embodiment sets up escape canal 9 at the bottom of the slope, and when rainfall intensity was great, the drainage blanket discharged the rainwater rapidly to escape canal 9 in, avoided further infiltration, influence side slope stability.

This embodiment still sets up a plurality of horizontal recesses on domatic, increases domatic roughness, is favorable to the heap of foreign soil and seed to be filled and adheres to.

In conclusion, the multi-layer composite structure is formed by filling the water retention layer 2 and the drainage layer 4, water retention and drainage of the side slope are considered, energy conservation and emission reduction of the engineering are promoted, and construction cost is reduced.

The present invention is not limited to the above-described embodiments, and various changes and modifications of the present invention are intended to be included within the scope of the claims and the equivalent technology of the present invention if they do not depart from the spirit and scope of the present invention.

Claims

1. The utility model provides an ecological slope protection structure of unified side slope of guarantor's drainage, its characterized in that, including the guarantor's water layer that is used for the water storage, be used for hydrophobic drainage blanket, degradable geotechnological net, vegetation layer and a plurality of layers geotechnological cloth, guarantor's water layer, drainage blanket, geotechnological net and vegetation layer from interior and lay on the side slope surface according to the preface outward, a plurality of layers geotechnological cloth set up respectively guarantor's water layer, drainage blanket, geotechnological net and side slope between.

2. The ecological slope protection structure of unified side slope of guarantor's drainage of claim 1, characterized in that still includes the stock that is used for fixing, the stock includes main stock and vice stock, main stock sets up on the side slope with vice stock equidistant, and its one end is squeezed into in the side slope, and the other end is worn out domatic to fix guarantor's water layer, drainage blanket, geotechnological net and geotechnological cloth.

3. The ecological slope protection structure with unified water retention and drainage functions as claimed in claim 1, further comprising a water interception and drainage system, wherein the water interception and drainage system comprises a water interception ditch formed at the top of the slope and/or a drainage ditch formed at the bottom of the slope.

4. The ecological slope protection structure of side slope with unified water retention and drainage function as claimed in claim 1, wherein a plurality of transverse grooves are formed on the surface of the side slope.