Horizontal deep hole stage slicing and caving mining method and stope for crushing thin ore body

Abstract

The invention discloses horizontal deep hole stage slicing and caving mining method and stope for crushing a thin ore body. The method comprises the following steps: arranging the stope along the orebody, and arranging an ore gathering roadway at the bottom of the stope; arranging footway ventilation shafts at both ends of the stope; arranging a cutting well and a cutting lane in the middle of the ore gathering roadway, wherein the cutting well communicates with the ore gathering roadway through the cutting lane; in the footway ventilation shafts, arranging drilling chambers at intervals along the height direction, and arranging horizontal medium-deep holes in the drilling chambers; adopting medium-deep hole slicing for cutting blasting and undercutting blasting to provide compensation space. The method can quickly recover the stope, avoid the safety hazard of the operation in the stope by adopting an original shallow-hole shrinkage method, greatly improve the mining operation efficiency, simplify the ore removal bottom structure, and improve the undercutting and ore removal efficiency; the method is suitable for crushing the thin ore body of a steep slope, can improve the safetyof the operation and the ore recovery rate, and can effectively reduce the loss rate and the dilution rate.

Description

technical field [0001] The invention relates to the technical field of mining construction, in particular to a layered caving mining method for broken thin ore bodies and horizontal deep holes. Background technique [0002] At present, domestic mines generally adopt the shallow hole retention method for ore bodies with a thickness of about 5m. When the traditional shallow hole retention method is adopted, some stopes will suffer serious fall when the mining reaches about 15-20m, and it is impossible to Mining again will cause permanent loss of ore, and also bring major safety hazards to the personnel operating in the stope. Therefore, solving a series of difficulties encountered in the mining of this type of mine and ensuring the safe and rapid mining of the mine has become an important issue. Contents of the invention [0003] The purpose of the present invention is to provide a mining method and stope for layered caving of broken thin ore bodies and horizontal deep hole...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a mining method and stope for layered caving of broken thin ore bodies and horizontal deep holes, which mainly solves the problem of serious stepping and falling when the stope back mining is less than the design height in the prior art, and people are in the open field. Problems of low recovery rate of operation and ore

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