Slope supporting method for crumbly strata

A technology for slopes and rock formations, applied in the field of slope support for broken rock formations, can solve the problems of difficulty in drilling holes, increased construction costs, multiple drilling accidents, etc., and achieves low cost, high economic value, and easy operation. Effect

Inactive Publication Date: 2016-06-08
SINOHYDRO BUREAU 8 CO LTD
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0002] Broken rock formations are often found in the construction process of slope support and foundation treatment. Under such geological conditions, drilling is not easy to form holes, and ordinary bolt construction methods cannot be used for construction. Generally, pipe drilling or automatic drilling is required for such geological conditions. Only advanced anchors can be constructed, resulting in increased construction costs
When encountering broken rock formations and there are large rocks in the rock formations, even if pipe drilling or self-advancing bolt construction is used, there will be more drilling accidents.

Method used

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  • Slope supporting method for crumbly strata
  • Slope supporting method for crumbly strata

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Embodiment Construction

[0024] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0025] Such as figure 1 (A represents the consolidation grouting hole, B represents the anchor rod) and figure 2 Shown, the embodiment of the slope support method of broken rock formation of the present invention may further comprise the steps:

[0026] S1: Slope sealing: Shotcrete construction is carried out on the front, top and side of the broken rock slope to form a sealing layer for the broken rock;

[0027] S2: Consolidation grouting drilling: drilling from the front of the sealing layer to the inside of the broken rock formation;

[0028] S3: setting the grouting pipe: burying the grouting pipe from each borehole;

[0029] S4: Consolidation grouting: grouting from each grouting pipe, waiting for consolidation;

[0030] S5: Bolt construction: carry out bolt support construction on the consolidated slope.

[0031] In this m...

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Abstract

The invention discloses a slope supporting method for crumbly strata. The slope supporting method comprises the steps of S1, slope sealing, wherein concrete is sprayed on the front surfaces, the tops and the side surfaces of slopes of the crumbly strata for constructing and forming closing layers for the crumbly strata; S2, consolidation grouting and drilling, wherein the front surfaces of the closing layers are drilled to the interiors of the crumbly strata; S3, grout pipe arranging, wherein grout pipes are embedded into drilling holes; S4, consolidation grouting, wherein grout fills in each grout pipe and waits to be consolidated; and S5, anchor rod constructing, wherein anchor rod support construction is carried out on the consolidated slopes. The slope supporting method has the advantages that the process is simple, the operation is easy, the cost is low, the construction period is short and the economic value is high.

Description

technical field [0001] The invention mainly relates to the slope support technology of complex rock formations (broken rock formations containing large boulders or complete bedrock layers), in particular to a slope support method for broken rock formations. Background technique [0002] Broken rock formations are often found in the construction process of slope support and foundation treatment. Under such geological conditions, drilling is not easy to form holes, and ordinary bolt construction methods cannot be used for construction. Generally, pipe drilling or automatic drilling is required for such geological conditions. Only the advanced anchor can be constructed, resulting in an increase in construction costs. And when running into the broken rock formation and there are larger stones in the rock formation, even if adopting pipe drilling or self-advancing bolt construction, more drilling accidents will also be encountered. [0003] Therefore, it is an urgent technology ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/20E02D5/76
CPCE02D5/76E02D17/20Y02A10/23
Inventor 黄明强姚瞻宋丹贺磊李志伟刘超罗俭李祥
Owner SINOHYDRO BUREAU 8 CO LTD
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