Mechanized mining method for gently-inclined medium-thick ore body

Abstract

The invention provides a mechanized mining method for a gently-inclined medium-thick ore body, and belongs to the technical field of mining. The method comprises the following steps: dividing a gently-inclined medium-thick ore body into a panel area, dividing the ore body in the panel area into strips in a heading direction, driving a pseudo-inclined mining uphill roadway and a return air uphill roadway in the inclining direction of the ore body, driving a stope connecting roadway in a mining uphill direction and a return air uphill direction respectively, reserving a top safety ore pillar anda bottom safety ore pillar at the top and the bottom of each section respectively, and reserving a safety ore pillar between adjacent stopes in the heading direction of the ore body. The strips in the panel area is divided into one-step stopes and two-step stopes, the ore body is stoped at intervals sequentially from bottom to top, the one-step stopes are mined first, and then the two-step stopesare mined. After filling and final setting of all one-step and two-step stopes, uphill safety ore pillars, top safety ore pillars and bottom safety ore pillars are recovered. The method provided by the invention has the advantages of high mechanization degree, large production capacity, small mining and cutting work amount, high ore recovery rate, low lean loss rate and good safety.

Description

technical field [0001] The invention relates to the technical field of mining, in particular to a mechanized mining method for a gently inclined medium-thick ore body. Background technique [0002] With the advancement of mechanization and mining technology, the application of large-scale equipment in the field of mining engineering is becoming more and more extensive. In order to improve the level of mining technology, intelligent mines have become the development trend of future mining, but intelligent mines are inseparable from high-efficiency Therefore, it is necessary to find a mechanized and efficient mining method for gently inclined medium-thick ore bodies to achieve safe, economical, efficient and mechanized mining. [0003] The mining methods of a large number of gently inclined medium-thick ore bodies mainly adopt the room-and-pillar method, the segmented open field and subsequent filling method, and the layered filling mining method. When the room-and-pillar met...

AI Technical Summary

Problems solved by technology

When the room-and-pillar method is used to mine gently inclined medium-thick ore bodies, it is divided into shallow-hole room-pillar method and medium-deep hole room-pillar method. Field work, low efficiency and low safety

The middle and deep hole room and pillar method is affected by the thickness of the ore body itself, so it cannot take advantage of the high efficiency of the medium and deep hole, and the mining and cutting work is relatively large; no matter whether the shallow hole room and pillar method or the medium and deep hole room and pillar method is adopted, A large number of ore pillars need to be left, and many ore pillars are basically impossible to recover, the ore recovery rate is low, the efficiency is low, and it is easy to cause a large area of ​​the roof to collapse

Although the segmented open-field method can take advantage of the advantages of medium and deep hole blasting, it is difficult to control the boundary of the ore body, and it is easy to cause the loss and dilution of the ore. and connecting lanes, the volume of mining and cutting work is relatively large

The layered filling mining method cannot carry out rock drilling, blasting and ore mining at the same time, and the production line is long, so its production capacity is low and its efficiency is low

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