The mining method of the hanging wall side ore body within the mining area of the mine
A technology of ore body and scope, applied in surface mining, mining equipment, earth-moving drilling, etc., can solve the problems of difficulty in mining, caving, cracks, etc. of ore body, achieve significant economic and social benefits, realize a virtuous circle, production powerful effect
Active Publication Date: 2015-08-12
HEBEI PROVINCE FANSHAN PHOSPHORITE CO LTD
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Problems solved by technology
[0002] Under the current mining technology conditions, after the ore body on the footwall side is mined, caving, cracks, and deformation are formed in a certain range on the hanging wall side due to the impact of mining, making it difficult to mine the ore body within the mining range.
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[0014] The present invention is mainly aimed at: 1. Gently inclined or inclined thick ore bodies with a thickness greater than 8m; 2. The ground is not allowed to subside, and the ground surface must be strictly protected. Overlying rock collapse or even large displacement is not allowed, such as mining under water bodies such as seashores, lakes, and rivers, mining under buildings, mining under main traffic lines, and mining in scenic spots; 3. Larger production scale is required; 4. Ore The value is low or the grade is relatively low, and the two-step inter-column recovery should be avoided. It is suitable for arranging appropriate mining and cutting works for the ore body within the mining range of the hanging wall after the main ore body on the foot wall side is mined, using the existing development and transportation system, and with the support of the post-mining filling body of the foot wall ore body. Recycling of hanging wall ore bodies;
[0015] First, determine the ...
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The invention relates to the technical field of mining, specifically to a hanging wall side orebody extracting method in a mine mining range. In the prior art, during an ultra-poor magnetite mining process, contradictory and unified conflicts among efficiency, cost, safety, dilution and loss exist. According to the present invention, the existing mine exploitation system is utilized to carry out mining cutting engineering arrangement, room ore pillars are divided into a plurality of square or round ore pillars, and the ore pillars are not recovered and are adopted as permanent loss, such that the two-step extracting is changed into the single-step extracting. According to the present invention, advantages of high room-pillar method production capacity and effective control of ground pressure through a filling method are provided; and the method is applicable for: 1, the gently-inclined or inclined thick and large orebody with a thickness of more than 8 m; 2, the ground disallowing subsidence, and the earth's surface requiring be strictly protected; and the geological condition disallowing overlying strata avalanche, even larger displacement; 3, the production scale with large requirements; and 4, ore with low value or relatively low grade, avoidance of two-step rib pillar extracting.
Description
technical field [0001] The invention relates to the field of mining technology, in particular to a mining method for an ore body on the hanging wall side within the mining range of a mine, which is suitable for utilizing the existing ore body within the mining range of the hanging wall side after the main ore body on the foot wall side is mined. It is a safe and efficient mining method that develops the transportation system, utilizes the supporting function of the post-mining filling body of the footwall ore body, arranges appropriate mining and cutting works, realizes the recycling of the upper wall ore body, and makes full use of the resources within the mining range . Background technique [0002] Under the current mining technology conditions, after the ore body on the footwall side is mined, caving, cracks, and deformation are formed in a certain range on the hanging wall side due to the impact of mining, making it difficult to mine the ore body within the mining range...
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IPC IPC(8): E21C41/16E21F15/00
Inventor 边振辉周映辉白树龙吕书平刘海生李文华杨继锋马爱军程宏翟涿殷振海张玲飞范新建常伟王贺董增顺
Owner HEBEI PROVINCE FANSHAN PHOSPHORITE CO LTD