Method for rapidly withdrawing fully mechanized coal mining face device of steep seam

Abstract

Provided is a method for rapidly withdrawing a fully mechanized coal mining face device of a steep seam. The method comprises: when the upper end of a work face is stopped to a stopping line, tunneling a quadrant arc withdrawing roadway along the upper end of the work face; installing a tailgate main winch and an auxiliary winch used to recycle a fully mechanized coal mining device in a tailgate; at the same time, laying a work face withdrawing slide in a coal face, after a coal cutter is withdrawn, withdrawing supports and scraper conveyers which are to be recycled and transferred one by one and block by block from bottom to top in sequence through the work face withdrawing slide and the arc withdrawing roadway, and withdrawing devices in a haulage way at the same time, to complete rapid withdrawing of the work face devices. The method is convenient in operation, simple in implementation, and is safe and effective, and can rapidly realize withdrawing of the fully mechanized coal mining face devices of a steep seam.

Description

technical field [0001] The invention relates to a method for quickly withdrawing equipment in a working face, in particular to a method for quickly withdrawing equipment in a fully mechanized mining working face in a steeply inclined coal seam under a coal mine. Background technique [0002] The "Eleventh Five-Year Plan" for the development of the national coal industry points out that "reasonable development, increasing the recovery rate of resources, and reducing the impact of coal mining on the ecological environment" are the main directions for the development of my country's coal industry in the coming period. Steeply inclined coal seam refers to the coal seam whose inclination angle α is greater than 45°. In my country, the reserves of steeply inclined coal seams account for about 17% of the total coal reserves. Most of the major mining areas in my country are distributed, and their annual output accounts for 8-10% of the total coal output of the country. % with an incr...

AI Technical Summary

Problems solved by technology

Due to the large inclination angle of the coal seam in the steeply inclined fully mechanized mining face, it is difficult to retract the equipment, and the retraction time is too long. The exposed roof of the working face will deform and increase with the increase of the suspension time. The safety of workers and equipment is not guaranteed

At the same time, the withdrawal time is long, and the replacement of the working face is difficult, which affects the production of the mine

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