Structure and method for preventing filled wall bodies of gob-side retained entries from sliding

Abstract

The invention provides a structure and a method for preventing filled wall bodies of gob-side retained entries from sliding. The structure consists of filled wall bodies and anti-shear anchor rods alternately arranged between the filled wall bodies and a top board as well as a bottom board. Through the anti-shear anchor rods arranged to be connected with top-bottom board rock strata, along with the proceeding of a mining workface, the filling of the filled wall bodies is completed one by one; top-bottom board surrounding rocks and filling bodies are combined by the anti-shear anchor rods to form a whole; the interlayer slippage of the filling bodies and the top-bottom board rock strata is limited, and the filling bodies are reinforced; and the filling bodies beside gob-side retained entries are provided strengthening reinforcement so as to greatly improve the capability of the filling bodies to resist deformation and sliding. The structure and the method can effectively prevent filledwall bodies beside the gob-side retained entries from sliding inwards, effectively maintain roadway sections behind gob-side retained entries and ensure the safety of the gob-side retained entries. The invention has the advantages of simple structure, convenient method, easy construction, safety, reliability and extensive practicability.

Description

Technical field [0001] The invention relates to a structure and a method for preventing a filling wall from leaving a roadway along the goaf, and is particularly suitable for the reinforcement of the filling wall of a mining roadway underground in a mine. Background technique [0002] The technology of retaining roadways along the goaf has been used in the mining field for a long time in the world. Its essence is to use the method of supporting wooden pillars, building gangue belts or filling concrete along the mining roadway behind the mining face. The area is retained as a mining tunnel for the next working face. [0003] With the continuous development of science and technology and mining mechanization, it is becoming more and more common to use masonry to fill the wall along the goaf. However, with the mining of the working face, the built-up road fill will bear the direct roof and old roof. At the same time, it bears the lateral pressure during the top slab rotation in the ma...

AI Technical Summary

Problems solved by technology

Although the above method can reduce the deformation and slippage of the filling wall, it is still difficult to effectively control the displacement of the wall. Therefore, how to ensure the integrity of the filling wall and improve its bearing capacity is a major safety production problem that needs to be solved urgently.

Images