A method for co-mining resources without pillar setting and roadway excavation

Abstract

The invention relates to the technical field of mining, in particular to a method for co-mining resources without pillars and roadway excavation. A co-mining working face is set on the aluminum ore layer, and an ore-drawing support is arranged on the co-mining work face. Support the coal seam, and set the front scraper conveyor on the side of the ore-drawing support close to the common mining face, and set the rear scraper conveyor on the side of the ore-drawing support away from the common mining face; the aluminum ore layer is cut and mined, And the aluminum ore is transported to the reloader through the front scraper conveyor; after a cutting and mining of the aluminum ore layer is completed, the aluminum ore layer is paused, and the coal discharge plate of the ore-drawing support is put down for coal mining, so that the coal falls to the rear scraper conveyor. And it is transported to the reloader through the rear scraper conveyor; after the lower aluminum ore is mined, the upper top coal is released, so as to realize coal and aluminum co-mining. Through roof cutting and pressure relief, the along-trough roadway of the working face is reserved, the roadway excavation and pillar retention are reduced, and the production efficiency is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of coal-aluminum co-mining, and particularly relates to a method for co-mining resources without ore pillars and without tunnel excavation. Background technique [0002] my country's aluminum ore resources are relatively rich, mainly distributed in Shanxi, Henan, Guangxi, Guizhou, Shandong and other places, of which Shanxi accounted for 35.91%, Henan accounted for 20.61%, Guangxi accounted for 18.37%, Guizhou accounted for 15.39%, and the four provinces accounted for the national total. 91.07% of reserves. Among the proven aluminum ore resources, most of them are buried no more than 200 meters deep. According to statistics, among the identified resources, only 38.1% are suitable for open-pit mining, 33.7% are suitable for underground mining, and 28.2% are suitable for open-pit + underground combined mining. Aluminium ore resources are suitable for underground mining. [0003] At the same time, my country i...

AI Technical Summary

Problems solved by technology

Due to the ore-forming conditions of aluminum ore resources in my country, the general mining technical conditions are complex and the bottom plate is not stable.

There are many problems encountered in the underground mining process of aluminum ore mines, which are prominently manifested in: ①The current mining methods generally have many problems such as low recovery rate, high dilution rate, low degree of mechanization, and low efficiency. The recovery rate is only about 50%, and the resource loss is serious. ②The surrounding rock is broken and unstable, the management of ground pressure is difficult, and the safety of operators is not high.

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