Mining method of open field and subsequent filling in extremely thick and large ore body stage under strong ground pressure environment

Abstract

The invention relates to a method for staged open stoping post mining filling mining of extremely-thick large ore bodies under the high-ground-pressure environment. The method comprises the followingsteps that (1), panels are arranged, the panels are divided in the ore body trend, each panel is composed of a plurality of stopes, and ore columns are reserved on the two sides of the panels; (2), mining-cutting is conducted, and at each mining stage, filling levels, rock-drilling levesl and ore drawing levels are arranged; (3), all the stopes are mined one by one from bottom to top, the spaced mining mode is adopted, one stope is subjected to stoping, every three stopes are subjected to mining-cutting, and filling operation is conducted after stoping is finished; (4), according to stope filling, after ore drawing of one in the stopes is completed, stope open stoping post mining filling is codncuted; and (5), ore columns are recovered, the reserved ore columns in the panels of a mine arerecovered, and before later-period mine mining is finished, an upward layered filling method is adopted to conduct concentrated recovery. The method has the advantages that production is safe, the good operation conditions and environments are achieved, the production efficiency is high, the panel capacity is large, the method is simple, the accurate mining engineering quantity is small, the stoping time section is short, and the flexibility is large.

Description

technical field [0001] The invention relates to the field of mining methods of minerals, in particular to a mining method of emptying and then filling in the stage of extremely thick and large ore bodies under strong ground pressure. Background technique [0002] With the continuous development of domestic mineral resources, shallow ore deposits and reserves are constantly being consumed, forcing more and more mines to turn to deep ore body mining. When the deep ore body is mined, the cost of tunnel construction increases, the cost of ore lifting increases, and the mining cost of the mine increases. In order to reduce mining costs and obtain economic benefits, mines usually use large-scale mining to reduce production costs. Increase the scale of the mine, increase stope parameters, and adapt the stope to large-scale production equipment. The traditional layout of the stope is rectangular, and the exposed area of ​​the sidewall along the long axis of the stope is large. Und...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a mining method of emptying and then filling in the stage of extremely thick and large ore bodies under strong ground pressure, so as to solve the hidden safety problems existing in the prior art and ensure the safety and high efficiency of mining

Images