A positioning grouting anchor rod suitable for prevention and control of engineering seepage damage and its construction method

Abstract

The invention discloses a positioning grouting anchor rod suitable for prevention and control of engineering seepage damage and a construction method thereof. The positioning grouting anchor rod comprises an anchor rod, a grouting guide pipe and a grouting pipe. When seepage damage occurs in the project, the water pump can be used to connect the drainage pipe interface to realize drainage, and at the same time, the limiter is used to position the seepage damage area to improve the accuracy of grouting reinforcement. The drainage channel and the grouting channel involved in the present invention are independent of each other and do not interfere with each other, and the drainage and grouting functions are combined on the basis of retaining the original support function of the bolt, so as to realize efficient prevention and treatment of engineering seepage The purpose of destruction can also save construction cost and construction period.

Description

technical field [0001] The invention relates to the technical field of bolt grouting support engineering, in particular to a positioning grouting bolt suitable for engineering seepage damage prevention and control and a construction method thereof. Background technique [0002] With the continuous development of the economy and the country's strong support for infrastructure projects, my country's underground geotechnical engineering has achieved unprecedented development. In engineering construction, groundwater seepage is a ubiquitous phenomenon, but complex seepage often causes deformation and damage to buildings and foundations, causing seepage damage, which has also become an important cause of most engineering accidents including deformation of foundation pits and collapse of surrounding buildings. . [0003] At present, in slopes or other underground projects, in order to improve the stability of the surrounding rock and soil, the common engineering treatment method ...

AI Technical Summary

Problems solved by technology

In actual engineering, there are often risks of anchor bolt reinforcement failure caused by seepage damage caused by complex seepage, which is mainly reflected in two aspects: first, the existence of groundwater will affect the calculation of the support structure, resulting in inaccurate design of the anchor bolt support structure; , Groundwater seepage damage will reduce the grip force between the anchor and the surrounding soil, and ultimately affect the overall stability of the entire anchor reinforcement system, that is, traditional anchors cannot be directly used in complex groundwater seepage environments.

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