Mechanized filling mining method for steeply inclined thin vein under soft rock stratum condition

Abstract

The invention discloses a mechanized filling mining method for a steeply inclined thin vein under a soft rock stratum condition. An accurate mining mode of slope ramp exploitation, segmented transport roadway connection and draw shaft ore removal is adopted to recover the ore body layer by layer from bottom to top; undercut approach road stoping is completed in a single-head tunneling mode, and a goaf formed by an undercut approach road is used as a free face to press down the ore body, so that the stoping efficiency is improved, and the ventilation condition is improved; lower disc waste rock and a non-cemented filling body are brushed and expanded to form a priming coat, and a high-strength cemented filling body is poured to form a glue face layer, so that unit consumption of steel and cement is reduced, and the filling cost is reduced; and drill jumbo efficient drilling, shotcrete jumbo rapid supporting and scraper centralized ore removal are assisted, so that the stope production capacity is greatly improved, the labor intensity of workers is reduced, the number of underground operating personnel is reduced, and stoping operation safety is guaranteed. The steps are repeated until the whole ore block is completely stoped. The method has the remarkable advantages of being high in mechanization degree, low in comprehensive cost, large in stope production capacity, good in safety and the like.

Description

technical field [0001] The invention belongs to the technical field of mining engineering, and in particular relates to a mechanized filling mining method for steeply inclined thin veins under the condition of weak rock formations. Background technique [0002] The safe and efficient mining of steeply inclined thin veins under weak rock formation conditions has always been a difficult problem in the mining industry. At present, the most commonly used downward approach filling mining method is to adopt the method of layer-by-layer approach mining from top to bottom, and lay steel bars and hanging bars on the upper layer approach to build a high-strength artificial roof to ensure The safety of the mining operation of the lower stratification approach. Since each layer needs to build a high-strength artificial roof, the filling process is complicated, the labor intensity of the workers is increased, and the mining cost is increased; and affected by the fluctuation of the ore b...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the technical problems of steeply inclined and thin vein mining technology and equipment under the existing weak rock formation conditions, low production efficiency, poor safety of mining operations, high support and filling costs, and high labor intensity of workers, the invention provides a weak The mechanized filling mining method of steeply inclined thin veins under rock formation conditions has the advantages of high degree of mechanization, low comprehensive cost, large stope production capacity, and good safety

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