Novel mining method suitable for multi-stope synchronous mining of thick and large ore bodies

Abstract

The invention discloses a novel mining method suitable for multi-stope synchronous mining of thick and large ore bodies. The method comprises the following steps of: dividing the ore bodies into a plurality of panel areas (20) along the trend of the ore bodies, and dividing the panel areas (20) into four stopes; and a vein-crossing transportation roadway (5) is tunneled in the center of the bottoms of the panel areas (20), a plurality of ore removal access ways (11) are tunneled from the two sides of the vein-crossing transportation roadway (5) to penetrate through all the stopes to serve as shoveling and transporting channels during stope ore removal, and an ore collecting trench (15) and a bottom pulling space (7) are arranged at the bottom of each stope. All the stopes in the panel areas (20) share one vein-crossing transportation roadway (5), the first stope (16) and the fourth stope (19) are stoped synchronously, and after stoping is finished and filling is conducted, the remaining two stopes are mined synchronously. Air flow communication can be achieved, and the working environment of a working face is improved; all the stopes share one vein-crossing transportation roadway (5), so that the mining and cutting work amount is reduced, and the mining production cost is reduced; and one panel area (20) is synchronously mined in two times, so that the ore production efficiencyis improved.

Description

technical field [0001] The invention belongs to the technical field of underground mine mining, and in particular relates to an underground mine mining method, which is particularly suitable for efficiently and quickly mining steeply inclined thick ore bodies with stable ore rocks. Background technique [0002] At present, the mining methods for thick and large orebodies in underground mines at home and abroad mainly include segmental caving method, stage caving method, segmental emptying and subsequent filling mining method, staged emptying and subsequent filling mining method, and layered filling mining method. Each mining method has its applicability and characteristics. The segmental caving and stage caving methods are suitable for mines with stable ore rocks and subsidence allowed on the surface. Due to the different degrees of subsidence within the limit of surface movement after the mining is completed, they are gradually being eliminated; the layered filling mining m...

AI Technical Summary

Problems solved by technology

[0005] (1) Two adjacent stopes are mined at the same time, and the exposed area of ​​the goaf is relatively large, especially when both sides of the second-step mining are filling bodies, the stability of the stope is poor;

[0006] (2) The side road along the vein is only arranged in the footwall of the ore body, and the stope is a single-headed working face. The rock drilling, blasting, and scraper ventilation in the stope are relatively difficult, and the operating environment is harsh;

[0007] (3) Two adjacent stopes share one mining roadway and one chute, and the left and right stope scrapers are likely to interfere with each other when they extract ore at the same time, which is not conducive to improving the scraping efficiency

Images