Efficient upward drift slicing and filling mining method suitable for unstable rock stratum

Abstract

The invention discloses an efficient upward drift slicing and filling mining method suitable for an unstable rock stratum. The efficient upward drift upward drift slicing and filling mining method comprises the steps that each section (c) is divided into an upper slice (c1) and a lower slice (c2), and the upper slices (c1) and the lower slices (c2) are combined into the sections (c) for carrying out mining, wherein the upper slices (c1) are firstly mined, and after drift stoping on the upper slices (c1) is completed, drift ore bodies of the lower slices (c2) are mined; and stoping is conducted on the same panel in the horizontal direction in a mode that one slice is mined every other slice or one slice is mined every other two slices, and after stope rooms of the upper slices (c1) and stope rooms of the lower slices (c2) in the first step are stoped, cemented filling is conducted, and stope rooms adjacent to the stope rooms in the first step are immediately stoped after a filling body meets the requirements of the curing strength. By adoption of the efficient upward drift slicing and filling mining method, continuous mining is achieved, and after one section is completely stoped, uniform lifting is conducted for drift stoping of the upper slices, the preparation project amount of second-step ore pillar stoping is decreased, primary roof supporting is reduced, the sectional height of primary filling is increased, the ore stoping and filling efficiency are improved, and the mining cost is lowered.

Description

technical field [0001] The invention relates to an upward approach layered filling mining method, which is especially suitable for filling mining in underground mines with unstable rock formations, and can be widely used in layered full tailings cemented filling mining in underground mines of ferrous and non-ferrous metals. Background technique [0002] The upward approach layered filling method is a bottom-up mining method that adopts the roadway approach method to recover and fill in layers. This method has the advantages of safe mining, high recovery rate, and low dilution. It is mainly suitable for: ① deposits where the ore rocks are not stable or the ore is relatively stable; ③ deposits that need to be protected on the surface. [0003] The method is characterized by layered mining from bottom to top. The mining of each layer is carried out after the layered contact road is excavated, and the approach is divided along the strike or vertical direction by the full height...

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Problems solved by technology

[0006] The purpose of the present invention is to solve the problems of low production capacity, large amount of mining engineering, complex process, high cost of stope support and continuous mining cannot be realized in the second step of the current upward approach layered filling method, and proposes a method suitable for High-efficiency upward approach layered filling mining method for unstable rock formations, aimed at realizing efficient continuous large-scale mining and reducing mining costs

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