Process for constructing soil anchor

Abstract

The invention relates to a process for constructing a soil anchor, and aims at providing a simple and convenient process for constructing a soil anchor to achieve the aims of improving the grouting diameter, ensuring the reinforcing effect, avoiding grout leakage, reducing grouting amount and reducing cost. The technical scheme provided by the invention comprises the following steps: a, forming and clearing pores; b, placing a pull rod and geotextile, uniformly and alternately distributing a group of centering frames on the pull rod, coating the pull rod and the centering frames into a cylinder by utilizing the geotextile, and sending the whole into the bottom of a borehole; c, carrying out primary grouting in the cavity of the cylinder which is defined by the geotextile; d, carrying out secondary grouting between the geotextile and the borehole wall; and e, carrying out tertiary grouting between the geotextile and the borehole wall. The process is mainly used for various water conservancy and hydropower engineering and municipal engineering.

Description

technical field [0001] The invention relates to a construction technology of a soil layer anchor rod, which is mainly applicable to various water conservancy and hydropower projects and municipal projects. Background technique [0002] Soil anchor technology is widely used in engineering such as foundation pit enclosure and slope support because of its simple construction and economical rationality. At present, the soil bolt grouting methods mainly include vacuum grouting, pressure grouting, high-density grouting, etc. These grouting methods generally use one-time grouting. The grouting effect can basically meet the requirements, but for the miscellaneous filling soil with relatively large pores and silty soil with weak strength, the effective reinforcement range of one-time grouting is not good, and there is the possibility of local grout leakage, so one grouting hole is often used during construction Injecting several tons of grout still has no effect. The reason is that ...

AI Technical Summary

Problems solved by technology

At present, the soil bolt grouting methods mainly include vacuum grouting, pressure grouting, high-density grouting, etc. These grouting methods generally use one-time grouting. The grouting effect can basically meet the requirements, but for the miscellaneous filling soil with relatively large pores and silty soil with weak strength, the effective reinforcement range of one-time grouting is not good, and there is the possibility of local grout leakage, so one grouting hole is often used during construction Injecting several tons of grout still has no effect, the reason is that grout leakage is very easy in the fill, and the grouting process needs to be innovated

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