A method for recovering cave ore in the process of changing from caving method to filling method

Abstract

The invention discloses a method for recovering cavern ore in the process of changing from the caving method to the filling method. Vein transportation lane (10) and stage along the vein transportation lane (12) and other projects, reclaim the ore resources stored in the last segment; arrange panel interval columns (13) along the ore body trend, and the panel intervals are mined step by step, and the panel sections It is carried out from the upper wall to the lower wall, and the vertical direction is recovered segment by segment from bottom to top. Multiple ore loading routes (2) in the stope are recovered at the same time; 2 to 3 layers in the panel are recovered and immediately organized Filling is used as the artificial false roof for deep mining and the ore covering layer (7) on the upper part of the empty area. After the filling body is completely cemented, the upper part of the layer is recovered. The invention realizes efficient recovery of cavern ore resources in the process of changing from caving method to filling method, improves the safety of cavern mine recovery, eliminates potential safety hazards in goafs, and prolongs service life of mines.

Description

technical field [0001] The invention belongs to the technical field of underground mine mining, and in particular relates to a method for recovering a silo ore whose surface is not collapsed in the process of converting from a bottom-pillar subsection caving method to a filling method. Background technique [0002] In recent years, with the rapid development of mining technology and filling technology, the requirements of national environmental protection policies have increased, especially the sub-column caving method without bottom pillars leads to the caving of the surface and surrounding rocks, which has a great negative impact on the surface environment. Backfill mining has become an inevitable requirement for policy and technology development. [0003] In the process of sub-pillar-free caving method to filling method, there are often a lot of ore resources in the original stope, especially for mines with good stability of roof and floor surrounding rocks, the surface h...

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Problems solved by technology

[0005] The purpose of the present invention is to solve the technical problem in the prior art that it is impossible to safely and effectively recover the ore resources of the cavern, and to provide a cavern deposit in the process of converting the caving method to the filling method with good safety, simple construction technology and low engineering cost. The recovery method of the mine can fully solve the problem of resource loss left by the caving method to the filling mining method, recover the upper left ore resources to the maximum extent, prolong the service life of the mine, and at the same time carry out safe treatment of the goaf, realizing the caving The smooth transition to the filling method eliminates the safety hazards in the mining of ore deposits

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