Non-bottom pillar deep hole falling-back type mining method

A mining method and retreat technology, applied in the field of deep hole retreat mining without bottom pillar, can solve the problems of many stopes, difficult safety, difficult production management, etc., and achieve uniform ore lumps, less auxiliary operations, The effect of high labor productivity

Active Publication Date: 2008-12-24
深圳市中金岭南有色金属股份有限公司凡口铅锌矿
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Problems solved by technology

At present, there are many mid-sections and stopes in the underground prod...

Method used

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  • Non-bottom pillar deep hole falling-back type mining method
  • Non-bottom pillar deep hole falling-back type mining method
  • Non-bottom pillar deep hole falling-back type mining method

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Embodiment Construction

[0029] Below in conjunction with accompanying drawing and embodiment the present invention is further described:

[0030]The mining area of ​​the stope in the present invention reveals that the formation is the D3tb formation of the Tianziling Central Subgroup of the upper Devonian system, and the surrounding rocks are mostly composed of gray-black nodular limestone interbedded with thin interbedded marl, with nodular structures. The bedding is clear, and the compressive and shear strength of the rock is medium; its geological structure is: major ore-controlling faults can be seen in the mining area, of which the larger scale is NNE-trending F3, which is inclined to the east, and NE-trend F102, which is inclined to the west , the dip angle is between 70° and 80°, and it is a parallel right-shifting reverse fault. Both sides of the fault have obvious traction deflection. The range of the broken zone is about 0.5m to 1.5m. It is limestone, the cement is muddy or marl, relatively...

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Abstract

The invention relates to a non-pillar deep-hole backing-type mining method. The method is suitable for that: the digging height is between 10 and 50 m; the length of a stope is between 40 and 80 m; the width of the stope is between 7 and 9 m; the dip angle of an ore body is between 68 and 90 degrees; the height of a bottom ore removal chamber is between 2.5 and 3.5 m; the height of an upper part rock drilling chamber is between 3.4 and 3.8 m; meanwhile, an explosive charge structure, an explosion initiating sequence, stope side lacing and top plate control are determined according to the conditions of the stope, and a remote-control scraper and a remote-control crushing trolley are jointly used to treat large ore materials for ore removal. The mining method has the advantages of small mining-cutting engineering quantity, simple mining-cutting process, high rock drilling efficiency, good blasting effect, safe and efficient ore removal process, can effectively improve the wide-spacing stoping safety for underground metal mines nationwide, can upgrade the mining technical level for the underground metal mines in China, can promote the development of nationwide underground metal mine mining technology, and can reduce the dilution rate and loss rate of nationwide underground metal mine spacing stoping stopes, so as to promote the maximal recycling of metal resources.

Description

【Technical field】 [0001] The invention belongs to the technical field of mine mining, and relates to a bottom-pillar-less deep-hole retreat mining method in which a suitable stope is selected in an upper intercolumn. 【Background technique】 [0002] The applicant is located about 48km northeast of Shaoguan City, Guangdong Province. It is a large-scale lead and zinc production base in my country and a national first-class enterprise. At present, the production capacity of the mine has changed from 40×10 4 t / a, developed to 150×10 4 More than t / a, the mine has a daily output of 4,000-4,500 tons of lead-zinc ore and an annual production capacity of 130,000-150,000 tons of lead-zinc metal content. It is the largest lead-zinc mining and dressing enterprise in my country's nonferrous metal industry. [0003] The Fankou lead-zinc mine was first built in 1958 and officially put into production in 1968. At present, the deepest mine has been mined to the level of -650m. Due to the h...

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Application Information

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IPC IPC(8): E21C41/16E21F15/00F42D3/00
Inventor 张木毅姚曙曹胜祥史秀志黄沛生王怀勇颜克俊谭军阮喜清丰深广彭常成王国金李华南陈胜强潘淼昌蓝瑜康
Owner 深圳市中金岭南有色金属股份有限公司凡口铅锌矿
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