High-sublevel subdivision mining method of moderately thick heavy-pitch waste-rock-containing interlayer phosphate orebody along strike

Abstract

The invention discloses a high-sublevel subdivision mining method of a moderately thick heavy-pitch waste-rock-containing interlayer phosphate orebody along a strike. The high-sublevel subdivision mining method comprises four steps of exploiting, mining preparation, cutting and recovery, wherein a footwall intermediate-section main roadway is respectively arranged on a high sublevel along a top plate and a bottom plate of the orebody, and the intermediate-section main roadways of the top plate and the bottom plate are connected through a communication channel at intervals of 100m, therefore reduced roadway cutting construction, small development rate and simple process are achieved; after overall blasting of a stope is finished, a large amount of concentrated ore drawing is carried out, and the production efficiency is high; tail sand is adhered and filled after space pillars are mined first, then rooms are evacuated, and the rooms are filled with waste rocks or tail sand in a non-adhering way, thus recovery rate is high; and the high-sublevel subdivision mining method has little damage to the environment and capabilities of changing oredressing tail sand and waste rocks generated in open-air production into valuables and reducing geological disaster from happening. Due to the adoption of the high-sublevel subdivision mining method disclosed by the invention, ore recovery rate can be increased, ore dilution rate and emission of mine wastes are reduced, capacity of slag disposal pit is relatively increased, expropriation of land is decreased, and mineral land harmony is promoted.

Description

technical field [0001] The invention relates to mine mining technology, in particular to a medium-thick and steeply inclined interlayer phosphate rock body containing waste rocks and a high-segment mining method along the strike. Background technique [0002] The present invention is mainly aimed at the characteristics of medium-thick and steeply inclined phosphate ore bodies containing waste rock interlayers. During the mining process, when the open-field mining method is used for mining, the mining ratio is too large, the production efficiency is low, the process is complicated, and the recovery rate is low. , large loss of resources and serious damage to the environment. [0003] Metallurgical Industry Publishing House Mining Manual Volume Four Chapter 20 Filling Mining Method Regarding the filling mining method of medium-thick and steeply inclined ore bodies, its shortcomings are: for the mining of medium-thick and steeply inclined ore bodies containing waste rock inter...

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Problems solved by technology

[0004] The purpose of the present invention is to address the deficiencies of the prior art and provide a mining method for medium-thick and steeply inclined phosphate ore bodies containing waste rock interlayers to solve the problems of excessive mining ratio, low production efficiency, complex process, low recovery rate, and resource Large losses, serious damage to the environment, etc.

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