Mine down-hole double-stope bottom structure

Abstract

The invention discloses a mine down-hole double-stope bottom structure. Down-hole double stopes comprise a room stope and a jamb stope, vein-along transport tunnels (4) are arranged on two sides of the room stope and the jamb stope, and an ore winze (5) is vertically arranged outside the vein-along transport tunnels (4). A vein-passing ore removal tunnel (6) is arranged between the vein-along transport tunnels (4) along the stopes. A room bottom pulling tunnel (7) is arranged on the lower part of a room along the vein-passing direction, and a room ore removal access (10) and a shared ore removal access (9) are distributed between the room bottom pulling tunnel (7) and the vein-passing ore removal tunnel (6) in turn; and the shared ore removal access (9) is obliquely crossed with the vein-passing ore removal tunnel (6), and the angle is 45 to 55 degrees. The structure can serve two stopes, reduce the project quantity and the supporting quantity and reduce the mining-cutting ratio of mining; the stability of the bottom structure is improved; and the recovery cost and the preparation time of two-step recovery are saved.

Description

technical field [0001] The invention relates to a bottom structure of an underground mine stope, in particular to a bottom structure of double stopes in an underground mine in which trackless equipment discharges ore in a mine subsequent filling mining method. It is suitable for all kinds of mines to use tailings filling for step-by-step back mining operation with trackless equipment, realize the sharing of the stope exit route, reduce the engineering quantity of the bottom structure and the mining preparation time of the two-step stope stope. Background technique [0002] The bottom structure of the ore block is an important component of the mining method, and the bottom structure of the stope has a great influence on the technical and economic effects of the mining method and the safety of the mining work. According to statistics, the labor consumption for forming the bottom structure of the mine underground stope accounts for 20-40% of the total labor consumption per ton ...

AI Technical Summary

Problems solved by technology

[0004] These two bottom structures have a large amount of work, and the cutting ratio of the bottom pillar is large, which affects the stability of the bottom pillar and increases the amount of support work.

The two-step recovery has a high cutting-to-cutting ratio and takes a long time to prepare the stope, which affects the comprehensive production capacity of the stope

At present, there is no publicized bottom structure design method that can be used for two stopes in China. In December 2006, "Mining Technology" disclosed a method for optimizing the structure parameters of a stope. It adopts a flat bottom structure and serves for a single stope. field

This kind of bottom structure has a high mining ratio and cannot meet the requirements of thick and large ore bodies, distributed mining and large mining equipment.

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