A kind of mine resource segmental full mining local filling mining method

Abstract

The invention discloses a mining method of mining resources by subsection and full mining and partial filling. The mining method specifically comprises the steps that a plurality of fully mechanized working faces and filling working faces are alternately arranged at intervals in a mining block section, and stoping of coal resources is carried out by adopting a method of full mining and partial filling; the width of the filling working faces is 30-60m, and transportation roadways and return airways of the filling working faces are reserved by using a gob-side entry retaining technology and usedas transportation roadways or return airways of the adjacent fully mechanized working face; and the width of the fully mechanized working faces is 4-6 times of that of the filling working faces, anda backward-type caving method is adopted for mining. The mining method combines the advantages of fully mechanized mining and filling mining, the problems of strong mine pressure appearance and largedeformation of a gob-side entry in deep high-stress environment are fundamentally solved, the gob-side entry deformation, the segment coal pillar loss and the roadway driving rate are can reduced, solid wastes such as gangue and fly ash are simultaneously processed, and safe, efficient and green mining of coal can be realized.

Description

technical field [0001] The invention relates to the technical field of mine coal resource filling mining and gob-side entry retaining, in particular to a mine resource segmental full mining partial filling mining method. Background technique [0002] With the high-intensity mining of coal resources, my country's shallow coal resources are gradually exhausted, and the center of gravity of coal mining is gradually shifting to the deep. However, in the process of mining deep coal resources, there are problems of large surrounding rock stress and large shrinkage rate of roadway section. In order to ensure the stability of the roadway in the existing fully mechanized caving mining, it is usually necessary to leave a 30-60m protective coal pillar, which causes a serious waste of coal resources. At the same time, the mining of coal has led to a large amount of solid waste such as gangue and fly ash on the surface, which has caused serious pollution to the environment. Although fu...

AI Technical Summary

Problems solved by technology

However, in the process of mining deep coal resources, there are problems of large surrounding rock stress and large shrinkage rate of roadway section

In order to ensure the stability of the roadway in the existing fully mechanized caving mining, it is usually necessary to leave a 30-60m protective coal pillar, which causes a serious waste of coal resources

At the same time, the mining of coal has led to a large amount of solid waste such as gangue and fly ash on the surface, which has caused serious pollution to the environment.

Although full-fill mining has the advantages of greening and good strata control effects, it usually has high costs and low output, and it is difficult to achieve high-yield and efficient mining requirements

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