Slope supporting method for crumbly strata

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 ...

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.

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