Recompression supporting method of tall side slope

Abstract

The invention discloses a side slope supporting method, in particular a recompression supporting method of a tall side slope. The invention aims at providing a supporting method of the tall side slope, which is safe and reliable, reduces the construction period and saves the cost. At least two anchor rods are transversely arranged on the position above the top of the side slope to be supported; a connection reinforcing steel bar is connected between the anchoring rods; geotextile is fixed on the anchor rods and the connection reinforcing steel bar and is paved from the slope surface to the slope toe. The falling of collapse rocks and instability of instable areas can be prevented by using the geotextile to cover the high side slope, and special collapse rock treatment is not needed on the side slope, thereby effectively saving manpower and material resources. The geotextile can recompresses the collapse rock to prevent falling of the collapse rock. The collapse rock fallen occasionally can only fall down along the geotextile and the slope surface and is extruded by the geotextile in the falling process, thereby the friction function, falling speed and energy are reduced and impact downward with accelerated speed is avoided.

Description

technical field [0001] The invention relates to a side slope support method, in particular to a high and large side slope overburden support method. Background technique [0002] For the protection and management of tall slopes with a large number of boulders and dangerous rocks scattered, the academic and engineering circles at home and abroad have always felt complicated and failed to propose a set of perfect treatment measures. With the vigorous development of hydropower, highways, bridges and culverts, real estate and other fields, there are more and more high-risk slope problems. [0003] It is difficult to support and manage tall slopes, among which, it is particularly difficult to clean up the lonely and dangerous rocks on the tall slopes. The reason is that: 1) the isolated and dangerous rocks of the tall slope are laborious to clean up, and often the amount of work is large, and it is difficult to thoroughly and completely remove in a short time and adopt a general...

AI Technical Summary

Problems solved by technology

[0003] It is difficult to support and manage tall slopes, among which, it is particularly difficult to clean up the lonely and dangerous rocks on the tall slopes

The reason is: 1) The lonely and dangerous rocks on the tall slopes are laborious to clean up, and often the amount of work is large, and it is difficult to completely remove them in a short time and by using a single cleaning method.

2) The cleaning technology of lone and dangerous rocks on tall slopes is not yet perfect, and it is difficult for machinery to go up, and most of them are manual climbing operations

3) It is difficult to manually climb tall slopes, and it is even more difficult to remove heavy and dangerous rocks at the same time during climbing. Ordinary methods such as simply relying on manpower are often not cleaned thoroughly, and it is easy to leave potential safety hazards

4) Climbing cleanup personnel or manual cleanup personnel with the help of safety ropes may have accidents due to unstable footholds, or may be threatened by the impact of lone and dangerous rocks that have not been cleaned thoroughly on the upper part

That is, the temporary security measures for construction personnel are very demanding, and it is difficult to provide effective security protection at present

5) During the cleaning of tall and large slopes and the isolated and dangerous rocks falling due to incomplete cleaning, the impact energy is large, which is extremely harmful to other construction surfaces with buildings, structures, traffic arteries or parallel operations at the foot of the slope

However, under the construction conditions of high and large slopes, this protection faces many difficulties, for example: 1) In the case of high and large slopes with complex geological conditions, it is difficult to go up manually and mechanically, and it is difficult to hang nets, plant anchors and spray grout Very large, fastening the netting to the ground is next to impossible

2) Even if the personnel and equipment go up, it is difficult to implement effective security measures to provide temporary security due to the limited space for movement and layout, and the personnel and equipment may also be threatened by the collapse of lonely rocks

3) The permanent protective net system of hanging net + spray anchor is not only difficult to construct, but also has a high cost, and it is difficult to control the cost in tall slopes

4) Stones smaller than the grid of the protective net may leak and fall along the grid and cause safety accidents

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