Filling mining method adopting room-and-pillar method and for underwater extremely-thin ore body

A filling mining and ultra-thin ore technology, which is applied in underground mining, filling, surface mining, etc., can solve the problems of high ore body loss rate and high mining cost, reduce wall cutting costs, improve ore recovery rate, and reduce construction costs Effect

Inactive Publication Date: 2016-11-09
GUIYANG AL-MG DESIGN & RES INST
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Problems solved by technology

[0009] The technical problem to be solved by the present invention is to provide a room-and-pillar filling mining method suitable for extremely thin ore bodies under water bodies, so as to solve the problem of using the existing technology to mine wate

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  • Filling mining method adopting room-and-pillar method and for underwater extremely-thin ore body
  • Filling mining method adopting room-and-pillar method and for underwater extremely-thin ore body
  • Filling mining method adopting room-and-pillar method and for underwater extremely-thin ore body

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[0026] combined with figure 1 and 2 , the present invention exploits the gently inclined extremely thin ore body with a thickness below 0.8m and an inclination angle below 30 degrees comprising the following steps:

[0027] 1) Mine house structure

[0028] The standard ore blocks are divided along the direction of the underground ore seam, with a strike length of 60m, a vertical height of 10m in the middle section, and an oblique length of 50-60m. The ore pillar includes the middle pillar 3, the point pillar 4, the top pillar 2 and the bottom pillar 5. The middle pillar 3 is 3m, the point pillar 4 is 6×6m in size, the top pillar 2 is 3m, and the bottom pillar 5 is 4m. Pillar 3 is set between two standard ore blocks, and the ore pillar area accounts for 30.9% of the entire stope area.

[0029] 2) Precise cutting: In the standard ore nugget, two middle-section transport lanes 1 are arranged along the ore seam trend on the upper and lower sides, with a size of 2.8m × 2.7m, and...

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Abstract

The invention discloses a filling mining method adopting a room-and-pillar method and for an underwater extremely-thin ore body. According to the method, the underwater gently inclined extremely-thin ore body is mined through the room-and-pillar method firstly, then artificial jambs are used for displacement, and finally waste tunneling stones are used for filling. The characteristics of a wall type wall cutting and filling mining method and the characteristics of a section type undercutting method are combined, the advantages are enhanced, the disadvantages are avoided, and the brand-new mining method for the extremely-thin ore body is sought out. In addition, the waste stones are used for filling after the ore body is mined, and the method has the characteristic that movement and deformation of surrounding rocks are well controlled and is suitable for mining conditions of ore bodies under buildings, roadbeds and water with the high ground surface settlement requirement, especially suitable for mining of the underwater gently inclined extremely-thin ore body with the thickness smaller than 0.8 m and the inclination angle being smaller than 30 degrees.

Description

technical field [0001] The invention relates to a room-and-pillar filling mining method suitable for extremely thin ore bodies under water bodies, which belongs to the technical field of underground mining, and is particularly suitable for mining extremely thin ore bodies under water bodies. Background technique [0002] (1) Mining of gently inclined extremely thin ore body [0003] The mining of gently inclined and extremely thin ore bodies is a difficult problem in the mining industry at home and abroad. Due to the thin ore body and gentle inclination angle, the working space is limited, the ore cannot slide by itself, mechanized equipment cannot be used, the production efficiency is low, and the loss of dilution is large. , The filling cost is large, and the production cost is high. These factors seriously affect the effective utilization of resources and strictly restrict the production and development of mines. [0004] Mining circles at home and abroad have made many...

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Application Information

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IPC IPC(8): E21C41/16E21F15/00
CPCE21C41/16E21F15/00E21F15/005
Inventor 陈吉松王学杰赵禄华杜昌伦龚新华刘斌
Owner GUIYANG AL-MG DESIGN & RES INST
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