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Filling grouting method of vertical fractures of slope face rock body

A rock mass, vertical technology, applied in excavation, climate change adaptation, construction, etc., can solve problems affecting construction quality, etc., and achieve the effects of accelerating ecological environment improvement, accelerating management and development, and fast construction

Active Publication Date: 2019-11-29
SAFEKEY ENG TECHZHENGZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the current construction is based on the construction experience of the construction personnel. For example, the amount of grouting in the cracks and where to drill holes are very subjective, which affects the construction quality.

Method used

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  • Filling grouting method of vertical fractures of slope face rock body
  • Filling grouting method of vertical fractures of slope face rock body
  • Filling grouting method of vertical fractures of slope face rock body

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specific Embodiment

[0106] The rock mass is taken as an example of the sandstone block, and the slurry is a high polymer slurry. The high polymer is generally a two-component polyurethane high polymer grouting material with self-expanding characteristics. This high polymer grouting material has its own Expansion characteristics, the free expansion rate in the air can reach 25-30 times.

[0107] For a Pisha sandstone block with vertical cracks on the slope, it is necessary to fill the vertical cracks with polymer grouting to block the infiltration channel of water flow, so as to avoid block-like gravity erosion. The polymer grouting method The implementation steps are as follows:

[0108] A. Design of polymer grouting parameters for vertical fractures in Pisha sandstone, including:

[0109] A1. Determine the geometric dimensions of vertical fissures and sandstone blocks on the facing slope through on-site investigations, mainly including the opening and height of vertical fissures and the cross-s...

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Abstract

The invention discloses a filling grouting method of vertical fractures of a slope face rock body. The filling grouting method comprises the steps: the opening degree of the vertical fractures of theslope face rock body, the geometric dimension of the rock body, the single-hole grouting amount and the separation distance of grouting holes are obtained, and according to the opening degree of the vertical fractures of the slope face rock body, the geometric dimension of the rock body and the separation distance of the grouting holes, the grouting holes are drilled to the fracture face accordingto the separation distance; and grouting guiding pipes are placed in the grouting holes, and slurry is injected in a filling mode. The method provides a fast and efficient new way for treatment of gravity erosion of the slope face rock body, and has the characteristics of fast construction, short construction period, good impermeable effect, small disturbance of the rock body, and the like, scientific and refine grouting can be achieved, and the grouting construction quality is guaranteed.

Description

technical field [0001] The invention relates to the technical field of rock mass reinforcement, in particular to a grouting method for filling vertical cracks in a rock mass on a slope surface. Background technique [0002] Due to the interaction of wind erosion, water erosion, freeze-thaw and gravity erosion, rocks often present a composite erosion mode. [0003] Massive erosion usually occurs in the rock mass, and there are a large number of vertical fissures, which constitute channels for water to infiltrate. The arsenic sandstone block is completely separated from the parent body, resulting in a tendency of falling and overturning. When it reaches a certain limit state, it will suddenly collapse, forming a block-like gravity erosion. [0004] Collapse of rock masses on slopes often leads to serious consequences. For example, collapse of rock masses on slopes on both sides of the road will interrupt the road, and even endanger the lives and properties of pedestrians. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/20
CPCE02D17/20Y02A10/23
Inventor 王复明李晓龙张蓓钟燕辉赵鹏
Owner SAFEKEY ENG TECHZHENGZHOU
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