A mining method for depositing caverns in transitional mining from caving method to filling method

Abstract

The invention discloses a mining method for depositing ore deposits in transitional mining from the caving method to the filling method. Segmental dike transport lanes (10) and stage-along vein transport lanes (12) and other projects recover 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 In the panel area, 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 are recovered in the panel area Immediately afterward, organize the filling as the ore covering layer (7) on the artificial false roof and the upper part of the empty area for deep mining. After the filling body is cemented and 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 pit ore that does not collapse on the ground surface in the process of converting from a bottom-pillar subsection caving method to a filling method. Background technique [0002] Deposited ore refers to the ore that remains in the stope and cannot be exhausted after the stope has been drawn, also known as residual ore. In the process of sub-pillar-free caving method to filling method, there are often a large number of ore resources in the original stope, especially for the roof and floor surrounding rock with good stability, the surface has not collapsed, and the ore covering layer is mainly ore. mine. [0003] In recent years, with the rapid development of mining technology and filling technology, the requirements of national environmental protection policies have increased, especially the subsection caving method without bo...

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Problems solved by technology

[0007] The purpose of the present invention is to provide a safe and convenient construction technology for the technical problem that the existing cavern ore resources cannot be safely and effectively recovered in the process of changing from the sub-section caving method of the existing bottom pillar to the filling method. The low-cost mining method used in transitional mining from the caving method to the filling method can fully solve the problem of resource loss left over from the caving method to the filling method, recover the upper left ore resources to the maximum extent, and extend the service life of the mine , and at the same time, it can carry out safe treatment of the goaf, realize the smooth transition from caving to filling method, and eliminate the hidden safety hazard in the mining of ore deposits

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