CN214695660U - Ecological protection system for preventing stone slope vegetation concrete thickening growth layer from collapsing - Google Patents

Abstract

The utility model provides an ecological protection system for preventing stone slope vegetation concrete thickening growth layer from collapsing. The system comprises a vegetation concrete thickening growth layer arranged on a rocky slope surface, wherein the vegetation concrete thickening growth layer comprises an organic layer and a mixed base layer containing grass seeds; the organic layer is arranged on the slope surface; the surface of the organic layer is provided with a net-shaped structure, and the net-shaped structure is fixed on the slope surface through a plurality of anchor rods; two bamboo sheets are bound on two adjacent anchor rods side by side up and down to form a force reducing grid; the force reducing grids are distributed on the slope surface in a quincuncial pile shape; the mixed base layer containing grass seeds is arranged on the reticular structure; the surface of the mixed base layer containing the grass seeds is provided with non-woven fabrics. The system can achieve the purpose of ecological protection and can prevent the vegetation concrete thickened growth layer from collapsing due to too concentrated local stress.

Description

Ecological protection system for preventing stone slope vegetation concrete thickening growth layer from collapsing

Technical Field

The utility model relates to a side slope protection technical field, concretely relates to prevent ecological protection system that stone slope vegetation concrete thickening growth layer collapsed.

Background

Due to the existence of objective factors such as slightly alkaline soil pH value (about 8.3), insufficient annual rainfall, large evaporation capacity, sandy soil and the like in northwest regions, a high-molecular binder used in a conventional foreign soil (TBS) construction method is decomposed in soil for 12-24 months, and when a side slope is greater than 45 degrees, a formed base material has poor strength and weak rain wash resistance, cannot ensure the middle-and-long-term protection landscape effect, and is limited in use in northwest regions. The traditional vegetation Concrete (CBS) slope protection process uses a twisted steel anchor rod with the diameter of 12mm to hang a single-layer galvanized wire mesh with the wire diameter of 1.5mm, the depth of the mesh-hanging anchor rod into rock is 40-50 cm, and the spray planting thickness is about 10cm to maintain the slope stability; the method is only suitable for greening shallow rock slopes (soil quality is clay basically) in wet and rainy climates in south. Similar construction processes are used in northwest regions, the medium-long-term growth effect of the protective slope vegetation cannot be guaranteed, the local or large-area collapse phenomenon is easy to occur, the greening cannot be basically achieved after one year, and the basic ecological protection effect cannot be achieved.

CN201710240793.8 provides a high and steep slope vegetation concrete slope protection greening technology, which comprises the steps of drilling rock on a high and steep slope to increase a strip-shaped U-shaped rough surface, placing jute fiber biological rods in concave parts of the U-shaped rough surface, then paving and hanging a complexing nutrition structure net, and finally spraying vegetation concrete biological cultivation mixture. In the technical scheme, the strip-shaped U-shaped rough surface needs to be added on the slope rock in a manual rock drilling mode, so that the construction difficulty and the safety risk of operators are increased; the used jute fiber biological rod needs to be filled with more other materials, and the usage amount of the jute fiber biological rod is also larger, so that the construction cost is higher.

CN202010238760.1 provides a vegetation concrete greening structure and method for mountain high-speed rocky side slopes, the greening structure comprises a base layer arranged on the slope surface of the side slope, a net layer is arranged on the base layer, a transition layer is arranged on the net layer, a vegetation concrete layer is arranged on the transition layer, and non-woven fabrics are laid on the vegetation concrete layer; a plurality of anchor rods are inserted on the slope surface of the side slope at intervals, and one ends of the anchor rods exposed out of the slope surface penetrate through the base layer and are connected with the net layer. Wherein, what play fixed concrete vegetation layer effect at the construction initial stage is the transition layer, and this transition layer includes multilayer crops straw layer and multilayer dry strip layer of planting. The technical scheme is suitable for being used in construction engineering with a not too thick vegetation concrete layer, and once the thickness of the vegetation concrete layer needs to be increased due to geographical condition limitation and climate reasons, the straw layer and the dry plant strip layer hardly meet the requirement of stabilizing the vegetation concrete layer.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, the utility model provides an ecological protection system for preventing the collapse of a thickened growth layer of vegetation concrete on a stone side slope, which utilizes a green concrete additive to change a cementing material through thickening the ecological protection growth layer so as to ensure that the pH value of a base layer and the pH value of the growth layer are completely neutralized; and prevent through the mode of installation power reduction check that the vegetation concrete caused because of local atress is too concentrated collapses to keep protecting domatic overall stability, guaranteed again simultaneously that the plant roots nature grows in the growth zone and form netted, reach the purpose of later stage ecological protection.

In order to realize the purpose, the utility model discloses a technical scheme as follows:

the ecological protection system comprises a vegetation concrete thickened growth layer arranged on the slope surface of the stone side slope, and the vegetation concrete thickened growth layer comprises an organic layer and a mixed base layer containing grass seeds; the organic layer is arranged on the slope surface; a reticular structure is arranged on the surface of the organic layer; the mixed base layer containing grass seeds is arranged on the reticular structure; a plurality of anchor rods are inserted in the slope surface in an array manner; binding two bamboo sheets on two adjacent anchor rods side by side from top to bottom to form a force reducing grid; each of the anchor rods has a portion extending beyond the organic layer, and the portion of the anchor rods extending beyond the organic layer is bent toward the bamboo sheet to fix the net-like structure and the bamboo sheet; the surface of the mixed base layer containing the grass seeds is provided with non-woven fabrics.

This technical scheme adopts and makes into a power reduction check with two bamboo sheet ligatures side by side from top to bottom on two adjacent stock, and this power reduction check can bear the weight of the nature that vegetation concrete thickening growth layer produced because of the thickening and weigh down the power down, can prevent to cause vegetation concrete thickening growth layer to collapse because of local atress is too concentrated to the local weight homodisperse of vegetation concrete thickening growth layer again to whole side slope. In addition, the technology can also ensure that the plant root system naturally grows in the growth layer to form a net shape, thereby achieving the purpose of later ecological protection. The used bamboo sheets are naturally rotten and degraded into organic fertilizer of the slope vegetation concrete after a plurality of years.

Preferably, the bamboo sheet is in a long strip structure, and the bamboo sheet is parallel to the slope surface along the length direction and perpendicular to the slope surface along the width direction; bamboo sheet's width is 5 ~ 8cm, and length is 100 ~ 180 cm.

Preferably, the mesh structure comprises a plurality of metal branch nets.

Further preferably, the width of the metal branch net is 1.5-3.2 m, the edges of two adjacent metal branch nets are overlapped, and the overlapping width is 10-15 cm.

Further preferably, the metal supporting net is a hyperbolic hexagonal galvanized wire net.

Preferably, the distance between two adjacent anchor rods is 0.8-1.5 m.

Preferably, the force reducing grids are arranged on the slope surface in a quincuncial pile shape.

Further preferably, the distance between any two left and right adjacent force reduction grids is 0.75-1.25 m, and the distance between any two front and back adjacent force reduction grids is 0.75-1.25 m.

Preferably, the thickness of the vegetation concrete thickening growth layer is 14-16 cm.

Preferably, the anchor rod is a threaded steel bar anchor rod with the diameter of 16mm, and the rock penetration depth of the anchor rod is 2 meters.

Compared with the prior art, the beneficial effects of the utility model are that: (1) by thickening the vegetation concrete growth layer and changing the cementing material by using the green concrete additive, the pH value of the vegetation concrete growth layer is completely neutralized, so that the ecological environment of the side slope in northwest regions is changed, and the environmental condition is suitable for green plant growth. (2) Through the whole atress condition of rational analysis side slope, change the specification and the material structure of traditional stock and net material, select bamboo sheet to install the power reduction check to the stability on vegetation concrete thickening growth layer has been strengthened. The force reducing lattice can bear the natural falling force generated by thickening the vegetation concrete growth layer, can uniformly disperse the local weight of the vegetation concrete to the whole side slope, prevents the vegetation concrete from collapsing due to too concentrated local stress, and can be naturally decomposed and degraded into organic fertilizer of the vegetation concrete of the side slope after a plurality of years by the bamboo sheets. (3) The whole process from the beginning to the middle and long term of construction is free of any public nuisance, and meets the requirements of the national current water conservation, environmental protection and ecological civilization sustainable development.

Drawings

Fig. 1 is a schematic sectional view of the ecological protection system of the vegetation concrete thickened growth layer in example 1.

Fig. 2 is a schematic view of the force reduction cell arrangement of example 1.

Fig. 3 is a front view of the ecological protection system of the vegetation concrete thickened growth layer of the embodiment 1.

Fig. 4 is a schematic sectional view of the ecological protection system of the vegetation concrete thickened growth layer in example 2.

Fig. 5 is a schematic view of the force reduction cell arrangement of example 2.

Fig. 6 is a front view of the ecological protection system of the vegetation concrete thickened growth layer of the embodiment 2.

In the figure: 1. a slope surface; 2. an anchor rod; 3. an anchor eye; 4. bamboo sheet material; 5. a network structure; 6. an organic layer; 7. a mixed base layer containing grass seeds; 8. non-woven fabrics; 9. thickening the vegetation concrete growth layer; 10. force reducing grids; 11. and (5) prefabricating a cushion block by using concrete.

Detailed Description

In order to further understand the content of the present invention, the technical solution of the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention. It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them.

Example 1

Referring to fig. 1, 2 and 3, the ecological protection system for preventing the collapse of the thickened vegetation concrete growth layer on the stone slope provided by the utility model comprises a thickened vegetation concrete growth layer 9 arranged on the slope surface 1 of the stone slope, wherein the thickened vegetation concrete growth layer comprises an organic layer 6 and a mixed base layer 7 containing grass seeds; the organic layer 6 is arranged on the slope surface 1; a reticular structure 5 is arranged on the surface of the organic layer 6; the mixed base layer 7 containing grass seeds is arranged on the reticular structure 5; a plurality of anchor rods 2 are inserted on the slope surface 1 at intervals; binding two bamboo sheets 4 side by side up and down on two adjacent anchor rods 2 to form a force reducing grid 10, wherein the bamboo sheets 4 are of long strip structures with certain width and thickness, and the bamboo sheets are parallel to the slope surface 1 along the length direction and vertical to the slope surface 1 along the width direction; each anchor rod 2 is vertically inserted into the slope surface 1, a part of each anchor rod 2 extends out of the organic layer 6, and the part of each anchor rod 2 extending out of the organic layer 6 is bent towards the bamboo sheet to fix the net-shaped structure 5 and the bamboo sheet 4; the surface of the mixed base layer 7 containing grass seeds is provided with a non-woven fabric 8.

The construction of the system comprises the following steps:

(1) cleaning the slope 1, cleaning up obstacles such as broken stones, sundries, floating soil and the like which hinder construction on the surface of the stone side slope, and embedding and repairing pits of the slope;

(2) a plurality of anchor holes 3 are distributed on the slope surface 1, a corresponding anchor rod 2 is installed in each anchor hole 3, a twisted steel anchor rod with the diameter of 16mm is selected as the anchor rod 2, the anchor rod is inserted into the rock along the direction vertical to the slope surface 1, the depth of penetrating into the rock is 2 meters, and the length of extending a rod head of the anchor rod 2 out of the slope surface 1 is about 15 cm; m30 cement mortar is poured into the anchor hole 3 to fix the anchor rod 2;

(3) installing a force reducing grid 10 on the slope surface 1, wherein the force reducing grid 10 is formed by binding two bamboo sheets 4 on two adjacent anchor rods 2 side by side from top to bottom; bamboo sheet 4 is made of bamboo with width of 5cm and length of 150cm and high maturity; the force reducing grids 10 are distributed on the slope surface 1 in a quincuncial pile shape, the distance between two adjacent force reducing grids on the left and right is 1 meter, and the distance between two adjacent force reducing grids on the front and back is 1 meter;

(4) laying reticular structures 5 with the wire diameter of 2.5mm and the width of 1.5m on the slope surface 1, splicing the two adjacent reticular structures 5 together side by side and enabling the edges of the two reticular structures not to be overlapped;

(5) mixing the material of the organic layer 6, and spraying the organic layer 6 on the slope surface 1 at high pressure, wherein the spraying thickness is 11-12 cm; the organic layer 6 comprises a greening base material and a soil base material; after the organic layer 6 is formed, the net-shaped structure 5 is located on the surface of the organic layer 6, the length of the anchor rod extending out of the surface of the organic layer 6 in the step (2) is 3-4 cm, and the part of the anchor rod 2 extending out of the organic layer 6 is bent towards the direction of the bamboo sheet 4 to be attached to the surface of the organic layer 6, so that the net-shaped structure 5 and the bamboo sheet 4 are fixed; according to 1m³The spraying of 1500kg of the organic layer 6 is carried out, and the technical indexes of the greening base material are as follows (the following percentages are weight percentages):

cement content of the cementing material: 2.5 percent of the total weight of the mixture,

the content of the green concrete additive is as follows: 1.25 percent of the total weight of the steel,

the content of the water retention material and the macromolecular water retention agent after mixing according to the proportion of 1:200 is as follows: 0.18 percent of the total weight of the mixture,

content of binder: 0.18 percent of the total weight of the mixture,

organic fertilizer content: 0.4 to 0.5 percent,

humic substance content: 3 percent of the total weight of the mixture,

organic matter content: 9 percent;

the soil substrate is local ditching soil. The pH value of the organic layer 6 obtained after the greening base material and the soil base material are uniformly mixed is 6.5-8.0, and the pH value is within a pH range suitable for growth of green plants.

(6) Mixing the material of the organic layer 6 and grass seeds to obtain a mixed base layer 7 containing grass seeds, and spraying the mixed base layer 7 containing the grass seeds on the surface of the organic layer 6 at high pressure, wherein the spraying thickness is 3-4 cm; the grass seeds are mixed seeds of plants such as grass, shrub, arbors and the like, and the local arbors and shrub seeds are mainly combined with a proper amount of grass seeds suitable for local growth; preparing grass, shrub, arbor and flower seeds according to the ratio of 3:5:1: 2; the Chinese herbal medicine and flower mainly adopt ryegrass, alfalfa, wild camptotheca acuminate, white clover, compositae grass flower, etc., the shrub mainly adopts amorpha fruticosa and caragana microphylla, the arbor mainly adopts acacia, the total amount of spray-seeding is about 55g/m²。

(7) Covering a non-woven fabric 8 on the surface of the mixed base layer 7 containing the grass seeds, and carrying out spray irrigation water curing until a vegetation concrete thickened growth layer 9 is formed; the vegetation concrete thickening growth layer 9 comprises the organic layer 6 and the grass seed-containing mixed base layer 7;

(8) and (4) dismantling the non-woven fabric 8, and carrying out daily maintenance and management on the vegetation concrete thickening growth layer 9.

Example 2

Referring to fig. 4, 5 and 6, the embodiment has the same implementation steps as the embodiment of example 1, except that in step (2), each anchor rod 2 is sleeved on a corresponding precast concrete pad 11, and the precast concrete pad 11 is a cube with a through hole and a length of 11cm, and the diameter of the through hole is slightly larger than the diameter of the anchor rod 2; the concrete precast cushion blocks 11 are used for better supporting the net-shaped structure 5, so that a certain space distance exists between the net-shaped structure 5 and the slope surface 1; in the step (3), two bamboo sheets 4 are bound side by side up and down on the concrete prefabricated cushion block 11 sleeved on the two adjacent anchor rods 2 to form force reduction grids 10, the distance between any two left and right adjacent force reduction grids 10 is 1 meter, and the distance between any two front and back adjacent force reduction grids is 1.25 meters; the bamboo sheet material is 8cm wide and 170cm long. In the step (4), the net-shaped structure 5 is hyperbolic hexagonal galvanized wire nets, the width of each hyperbolic hexagonal galvanized wire net is 2 meters, the wire diameter is 2.5mm, and the length of the mutual overlapping between every two adjacent hyperbolic hexagonal galvanized wire nets is 15 cm.

It should be noted that bamboo sheet 4's specification selection should be adjusted according to vegetation concrete's thickness difference, the utility model discloses well preferred selection width is 5 ~ 8cm, and length is the high bamboo sheet of 100 ~ 180 cm's maturity. The distance between two arbitrary adjacent power reduction check 10 is different and different according to the geographical condition of constructing the local, the utility model discloses the preference sets up about two arbitrary adjacent power reduction check distance is 0.75 meters ~ 1.25 meters, sets up two arbitrary front and back adjacent power reduction check distance between is 0.75 meters ~ 1.25 meters. The net-shaped structure 5 can be a plastic net-shaped structure, a rope net, a single-curve metal hook-flower net, a double-curve metal wire net and the like, the galvanized wire net is preferably selected in the utility model, and the double-curve hexagonal galvanized wire net is further preferably selected; the width of each reticular structure 5 is 1.5-3.2 meters, two adjacent reticular structures 5 can be overlapped or not overlapped, and if the two adjacent reticular structures are overlapped, the overlapping width is 10-15 cm. The distance between two adjacent stock 2 can be adjusted according to the local actual condition of construction, the utility model discloses well preference's distance is 0.8 ~ 1.5 m.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Various modifications and alterations of this invention will occur to those skilled in the art. Any simple equivalent variations and modifications made in accordance with the claims and the content of the description of the invention are intended to be included within the scope of the invention.

Claims (10)

1. The ecological protection system is characterized by comprising a vegetation concrete thickened growth layer arranged on the slope surface of the stone side slope, wherein the vegetation concrete thickened growth layer comprises an organic layer and a mixed base layer containing grass seeds; the organic layer is arranged on the slope surface; a reticular structure is arranged on the surface of the organic layer; the mixed base layer containing grass seeds is arranged on the reticular structure; a plurality of anchor rods are inserted in the slope surface in an array manner; binding two bamboo sheets on two adjacent anchor rods side by side from top to bottom to form a force reducing grid; each of the anchor rods has a portion extending beyond the organic layer, and the portion of the anchor rods extending beyond the organic layer is bent toward the bamboo sheet to fix the net-like structure and the bamboo sheet; the surface of the mixed base layer containing the grass seeds is provided with non-woven fabrics.

2. The ecological protection system for preventing the collapse of a vegetation concrete thickened growth layer on a stone slope according to claim 1, characterized in that the bamboo sheet is of a strip structure, and the bamboo sheet is parallel to the slope surface along the length direction and perpendicular to the slope surface along the width direction; bamboo sheet's width is 5 ~ 8cm, and length is 100 ~ 180 cm.

3. The ecological protection system for preventing the collapse of the vegetation concrete thickened growth layer on the rocky slope according to claim 1, wherein the net structure comprises a plurality of metal branch nets.

4. The ecological protection system for preventing the collapse of the vegetation concrete thickened growth layer on the stone slope according to claim 3, wherein the width of the metal branch nets is 1.5-3.2 m, the edges of two adjacent metal branch nets are overlapped, and the overlapping width is 10-15 cm.

5. The ecological protection system for preventing the collapse of the vegetation concrete thickened growth layer on the stone slope according to claim 3, wherein the metal supporting nets are hyperbolic hexagonal galvanized wire nets.

6. The ecological protection system for preventing the collapse of the vegetation concrete thickened growth layer on the rocky slope according to claim 1, wherein the distance between two adjacent anchor rods is 0.8-1.5 m.

7. The ecological protection system for preventing the collapse of the vegetation concrete thickened growth layer on the stone slope according to claim 1, wherein the force reduction grids are arranged on the slope surface in a quincuncial pile shape.

8. The ecological protection system for preventing the collapse of the vegetation concrete thickened growth layer on the rocky slope according to claim 7, wherein the distance between any two left and right adjacent force reduction grids is 0.75-1.25 m, and the distance between any two front and back adjacent force reduction grids is 0.75-1.25 m.

9. The ecological protection system for preventing the collapse of the vegetation concrete thickened growth layer on the stone slope according to claim 1, wherein the thickness of the vegetation concrete thickened growth layer is 14-16 cm.

10. The ecological protection system for preventing the collapse of the vegetation concrete thickened growth layer on the rocky slope according to claim 1, wherein the anchor is a twisted steel anchor with the diameter of 16mm, and the rock-entering depth of the anchor is 2 meters.

Images