Continuous stoping and filling mining method for gently inclined medium-thick ore body

Abstract

The invention provides a continuous stoping and filling mining method for a gently inclined medium-thick ore body and belongs to the technical field of mining. According to the continuous stoping andfilling mining method, the gently inclined medium-thick ore body is divided into sections in the vertical direction, the ore body is divided into stoping units, the stoping units are divided into strips in the moving direction of the ore body, separation pillars are reserved between the adjacent strips in the moving direction of the ore body, inclined ramps are excavated in the separation pillars,and stope connection roadways are excavated along the inclined ramps; the strips in the same stoping unit are divided into six first-step stopes and six second-step stopes, interval stoping is conducted on the stopes in the same stoping units, stoping is conducted on the first-step stopes firstly, then the first-step stopes are filled, and after filling body curing reaches the specified time, stoping is conducted on the second-step stopes; and after several adjacent stoping unit ore main bodies are completely mined and the stopes are filled, the stoping is conducted on the separation pillars,top safety pillars and bottom safety pillars between the stoping units. According to the continuous stoping and filling mining method, the mechanical degree is high, the production capacity is high,the ore stoping rate is high, the ore dilution rate is low, and safety is good.

Description

technical field [0001] The invention relates to the technical field of mining, in particular to a continuous back mining and filling mining method of a gently inclined medium-thick ore body. Background technique [0002] With the gradual consumption of mineral resources, mines are gradually developing towards deep mining. Deep mining is faced with conditions such as high well depth, high temperature and high pressure, and its mining costs will greatly increase. In order to improve the mining level of mines, more and more mines have begun to develop towards intelligent mining, requiring large-scale and efficient mining of ore bodies to reduce mining costs; and gently inclined medium-thick ore bodies are difficult to mine. Therefore, It is necessary to seek a continuous stop and fill mining method for gently inclined medium-thick ore bodies in order to realize safe, economical and efficient mining of mines. [0003] The mining methods of a large number of gently inclined medi...

AI Technical Summary

Problems solved by technology

When the layered filling method is used to mine the gently inclined medium-thick ore body, rock drilling, blasting and ore extraction cannot be carried out at the same time. The operation front is long, the production capacity is low, and the utilization rate of equipment is low.

The segmented open-field and subsequent filling method has the advantage of large production capacity, but the mining boundary of the ore body is difficult to control, the loss rate is high, and a large number of ore exit routes need to be excavated, and the mining and cutting engineering volume is relatively large

The room-and-pillar method is a relatively traditional mining method. When the room-and-pillar method is used to mine gently inclined medium-thick ore bodies, the production capacity is low, and a large number of unrecoverable ore pillars need to be left, the ore loss rate is high, and the roof is easy to Collapse occurs, which is detrimental to the safe production of mines

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