Glass fiber anchor rod and construction method

Abstract

The invention discloses a glass fiber anchor rod and a construction method. The glass fiber anchor rod comprises an anchor head, a rod body, a stop-grouting plug and an anchor accessory, wherein one end of the rod body is connected with the anchor head, and the other end of the rod body is in sliding connection with the stop-grouting plug and the anchor accessory; the stop-grouting plug is located between the anchor head and the anchor accessory; the rod body is of a hollow structure and is made of glass fibers; and the rod body is provided with a plurality of openings, and the openings communicate with the hollow structure of the rod body. The method comprises the steps of drilling, hole cleaning, installation of the anchor rod, grouting, anchorage and the like. By the adoption of the glass fiber anchor rod and the construction method, the bearing capacity and the tensile capacity of the rod body can be improved advantageously, the construction cost is reduced, a whole installation hole and surrounding cracks can easily be densely filled, and overall strength is improved. By the adoption of the method, the filling effect of grout to surrounding rock cracks can be improved, the grouting compaction degree is increased, the probability of corrosion to the rod body is lowered, the service life is prolonged, construction efficiency is improved, and construction safety is improved.

Description

technical field [0001] The invention relates to the construction field of construction engineering, in particular to a glass fiber anchor rod and a construction method. Background technique [0002] The grades of geological conditions can divide the surrounding rocks into grades I, II, III, IV, V, and VI. For surrounding rocks above grade IV, necessary bolt support is required. When there is a broken zone in the surrounding rock, the surrounding rock Poor stability, unable to form a "stress arch" by itself, easy to collapse, difficult to form a hole, and a potential safety hazard. [0003] When the installation holes of ordinary metal grouting bolts are distributed in the broken zone, because the rock mass in the broken zone is extremely unstable, during the process of installing the bolt, the inner wall of the installation hole is vibrated and the broken rock mass is easily dropped, causing the installation hole to be broken. If there is a blockage in the inner part, once ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the above-mentioned deficiencies such as insufficient grouting and poor supporting force caused by the broken rock mass falling off the existing anchor bolt in the process of supporting the surrounding rock containing the broken zone, and to provide a glass fiber anchor bolt And the construction method is beneficial to ensure the compactness of grouting, improve the support strength, facilitate the filling of cracks, enhance the stability of surrounding rock, improve the safety of the construction process, and save costs

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