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Side slope rockfall cushioning and protection system

A protection system and slope technology, applied in the field of slope protection and treatment, and rock slopes, can solve the problems of unsolved rockfall accumulation, falling rocks are easy to break through high-strength metal grid mesh and ring metal mesh, and achieve project implementation costs Effects of lowering, material reduction, and impact reduction

Active Publication Date: 2015-06-03
CHINA THREE GORGES UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method reduces the amount of consumables, the falling rocks on the rolling slope are easy to break through the high-strength metal grid and ring metal mesh, and it still does not solve the problem of the accumulation of falling rocks in the protection system

Method used

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  • Side slope rockfall cushioning and protection system
  • Side slope rockfall cushioning and protection system
  • Side slope rockfall cushioning and protection system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] For a rock excavation slope with slope length S of 25m, a heavy protective layer is set on the slope.

[0036] Use measuring instruments to locate the location of each steel column. The horizontal spacing between adjacent steel columns of the same unit is 5m on the slope, and the net distance between the steel columns of the passive protection unit and the vertical steel columns of the energy-reducing buffer unit is 8m. Install each steel column at the positioning point in accordance with the current national or industry regulations, and meet the conditions: the steel column of the passive protection unit has a net height of 3.5m on the slope, and the angle α with the slope is 75°; the vertical steel column of the energy-reducing buffer unit is at The net height of the slope surface is 1.5m, and the included angle γ with the slope surface is 75°; the oblique steel column of the energy-reducing buffer unit has a net length of 3.5m on the slope surface, and the included an...

Embodiment 2

[0039] For a rock excavation slope with slope length S of 60m, double protection layers are set on the slope surface, and the net distance between the first and second protection layers is 25m.

[0040] Use measuring instruments to locate the location of each steel column. The horizontal spacing between adjacent steel columns of the same unit is 8m on the slope, and the net distance between the steel columns of the passive protection unit and the vertical steel columns of the energy-reducing buffer unit is 10m. Install each steel column at the positioning point in accordance with the current national or industry standards, and meet the conditions: the steel column of the passive protection unit has a net height of 5m on the slope, and the angle α with the slope is 105°; the vertical steel column of the energy-reducing buffer unit is on the slope The net height of the surface is 2m, and the included angle γ with the slope is 90°; the oblique steel column of the energy-reducing b...

Embodiment 3

[0043] For a rock excavation slope with slope length S of 75m, three protective layers are set on the slope surface, and the net distance between adjacent protective layers is 20m.

[0044] Use measuring instruments to locate the location of each steel column. The horizontal spacing between adjacent steel columns of the same unit is 8m on the slope, and the net distance between the steel columns of the passive protection unit and the vertical steel columns of the energy-reducing buffer unit is 10m. Install each steel column at the positioning point in accordance with the current national or industry standards, and meet the conditions: the steel column of the passive protection unit has a net height of 5m on the slope, and the angle α with the slope is 105°; the vertical steel column of the energy-reducing buffer unit is on the slope The net height of the surface is 2m, and the included angle γ with the slope is 90°; the oblique steel column of the energy-reducing buffer unit ha...

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Abstract

The invention relates to a side slope rockfall cushioning and protection system. The side slope rockfall cushioning and protection system is formed by laminating a plurality of protection layers, and each protection layer is divided into two units, namely one passive protection unit and one energy-reducing buffer unit. The quantity of the protection layers is determined according to the oblique length of a side slope, a net distance between two adjacent protection layers is 20m to 25m, and a net distance between the passive protection unit and the energy-reducing buffer unit in the same protection layer is 8m to 10m. A first passive protection unit in the passive protection units consists of a steel-column supporting structure, a cat anchor structure, a continuous protection net and a detachable-type protection net; from the second protection layer, each passive protection unit consists of a steel-column supporting structure, a cat anchor structure and a continuous protection net; each energy-reducing buffer unit consists of a triangular supporting structure and high-elasticity meshes. By adopting the slope rockfall cushioning and protection system, the falling energy of the side slope rockfall can be reduced, the impact force of the rockfall for the protection net can be reduced, the accumulation problem of the rockfall in the system can be effectively solved, the consumption amount of materials is greatly reduced, and the engineering construction cost is reduced.

Description

technical field [0001] The invention relates to the field of slope engineering, belongs to slope protection and treatment methods, and is suitable for high and steep rock slopes prone to falling rocks. Background technique [0002] With the rise and advancement of many large-scale construction projects, man-made slopes are becoming more and more common across the country, and the treatment of rockfall on slopes has become increasingly prominent and urgent. There are currently two main methods for slope rockfall control. One is the active slope protection system, which covers and wraps various types of flexible nets, mainly steel wire rope nets, on the surface of the slope to be protected to limit the rock mass on the slope. Weathering, spalling and collapse, or controlling the movement of falling rocks within a small range. When this method is implemented, the flexible net needs to cover the entire slope, and the amount of consumables is large. At the same time, falling roc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01F7/04
Inventor 周明涛胡旭东许文年张守德高家祯
Owner CHINA THREE GORGES UNIV
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