A method of adjustable multi-suitable formwork support and gob-side entry retention in fully mechanized mining face with large mining height

Abstract

The invention relates to an adjustable high-adaptability formwork support for a large mining height fully-mechanized face and a gob-side entry retaining method. The adjustable high-adaptability formwork support for the large mining height fully-mechanized face and the gob-side entry retaining method are applicable to the large mining height working face and complicated roof conditions. The adjustable high-adaptability formwork support comprises an inner box body and an outer box body which are combined in a nested mode, a pre-excavated niche is formed in the front of an end support of a stoping face, and a top plate in the niche is supported through an anchor pole and an anchor rope; the adjustable high-adaptability formwork support is arranged behind the end support, a reinforcing mesh is laid in the adjustable high-adaptability formwork support, filling bags are hung in the adjustable high-adaptability formwork support, and a counter-pulled anchor pole is installed in an installing hole of a side plate anchor pole; pasty fluid or high-water-material grout is injected into the filling bags; a side plate oil cylinder is adjusted after filling bodies are solidified, side plates are pushed and expanded, the support is moved as a whole, and construction is completed. The method is safe, reliable, high in integrity, high in mechanization degree and high in adaptability to different mine pressure conditions and different top plate conditions of a roadway, and the filling bodies are regularly formed.

Description

technical field [0001] The invention relates to a support and a gob-side entry retaining method, in particular to an adjustable multi-suitable formwork support and a gob-side entry retaining method suitable for use under the conditions of a large mining height working face and a complex roof. Background technique [0002] As a technology to improve the recovery rate of coal resources and alleviate the tension of mining replacement, gob-side entry retention has been promoted in various geological conditions and gas emissions in China. At present, with the expansion of the application of gob entry retention and the development of technology, great progress has been made in the research and development of mechanically integrated gob entry entry retention and filling materials for gob entry entry retention. However, there are still some disadvantages in the traditional technology of gob-side entry retention. The implementation of gob-side entry retention has disadvantages such a...

AI Technical Summary

Problems solved by technology

However, there are still some disadvantages in the traditional technology of gob-side entry retention. The implementation of gob-side entry retention has disadvantages such as unsafe working environment and high labor intensity.

The project shows that the roadside support and filling walls are not in a straight line, the filling body is not well connected to the roof, the efficiency is low, the filling equipment is scattered, and the integrity is poor, all of which affect the final effect of the gob-side entry retention

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