Active reinforced filling wall and construction method

Abstract

The invention relates to an active reinforced filling wall and a construction method. The active reinforced filling wall comprises a hollow tubular anchoring agent, and the construction method is as follows: 1 the length of an anchor rod or an anchor cable is greater than the thickness of the wall; 2 the hollow tubular anchoring agent is of a hollow tube shape alternatively prefabricated by an anchoring agent and daub which are separated by a polyester film, and the anchoring rod or the anchoring cable is embedded with the hollow tubular anchoring agent; 3 the anchoring rod or the anchoring cable is laid in a predetermined position on a template; 4 a filling material is filled; 5 the template is dismounted; 6 a tray and a screw cap or a rigging are mounted; 7 the anchoring rod or the anchoring cable is rotated, the polyester film of the hollow tubular anchoring agent is cracked at once, the anchoring agent and the daub react after being mixed, and the anchoring rod or the anchoring cable is integratedly anchored with consolidated filling material around; and 8 pre-tightening force is applied. According to the active reinforced filling wall and the construction method, due to the adoption of a solution of embedding the hollow tubular anchoring agent on the anchor rod body, the problems that reinforcing ribs are difficult to be laid on the wall, the early strength of a masonry wall is low and a long time is needed to increase the strength are solved; the anchor rod or the anchor cable is transversely consolidated in the wall by the anchoring agent and the pre-tightening force is applied.

Description

technical field [0001] The invention relates to a method for enhancing the load-bearing performance of a wall, in particular to a method suitable for optimizing the load-bearing performance of a support filling wall next to an underground roadway. Background technique [0002] With the continuous deepening of mining depth, gas hazards are becoming more and more prominent. The use of gob-side entry retention technology can effectively realize safe and efficient coal mining. Masonry filling walls are an important part of the success of gob-side entry retention. With the recovery of the working face, the filling wall provides support to balance the weight of the immediate roof above the roadway and the cantilever beam at the edge, and at the same time bears the lateral pressure during the rotation of the masonry beam structure roof formed after the old roof is broken. However, at present, there are two major problems in the load-bearing performance of the filling wall, which se...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a kind of actively reinforced filling wall and its construction method, combined with the bolt or anchor cable anchoring technology to actively support the surrounding rock, adopting the scheme of nesting the hollow tubular anchoring agent on the anchor body to solve the problem of wall Difficulty in arranging reinforcing ribs above the body, and the problem of low early strength of the masonry wall and a long time for strength increase; the anchor rod or anchor cable is laterally consolidated in the wall through the anchoring agent to apply pre-tightening force; through the anchoring agent Consolidation of anchor cables and pre-tightening in the wall actively improves the initial strength of the filling wall and effectively solves the problem of difficulty in arranging reinforcement bars in the weak upper part of the wall

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