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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 water bodies with a thickness below 0.8m and an inclination angle below 30 degrees. Gently inclined extremely thin ore bodies have high mining costs, high ore body loss rate, and problems such as transportation of excavation waste rocks and surface storage

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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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Embodiment Construction

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

[0027] 1) Mining house structure

[0028] Divide the standard ore blocks along the direction of the underground mine layer. The length of the direction is 60m, the vertical height of the middle section is 10m, and the oblique length is 50-60m. The standard ore blocks are divided into 5 mining houses with a span of 12m. Ore pillars, ore pillars include intermediate pillars 3, point pillars 4, top pillars 2 and bottom pillars 5, the middle pillar 3 is 3m in size, point pillar 4 is 6×6m in size, top pillar 2 is 3m, bottom pillar 5 is 4m, and the Column 3 is set between two standard ore blocks, and the area of ​​the ore column accounts for 30.9% of the entire stope area.

[0029] 2) Mining and cutting: on the upper and lower sides of ...

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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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