Coal mining solid filling method

A technology of solid filling and solid objects, which is applied in the direction of filling, ground mining, mining equipment, etc., can solve the problems of low degree of mechanization, in the research stage, and high production cost, and achieve high production efficiency, improved recovery rate, and low cost. Effect

Inactive Publication Date: 2009-11-25
CHINA UNIV OF MINING & TECH +1
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Problems solved by technology

Foreign countries often use water-sand and wind filling mining technologies to control surface subsidence. my country has conducted research on filling mining in many mining areas, including strip mining, roadway filling mining, paste and paste-like filling mining and other subsidenc

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  • Coal mining solid filling method
  • Coal mining solid filling method

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[0025] 1. Set the depth of the vertical feeding well 2 to 350m. Use Φ510×12mm wear-resistant steel pipe as the feeding pipe of the feeding well. Capacity greater than 450t / h;

[0026] (2) Set the length of the solid filling mining face 17 to be 50m, the daily cycle is 6 knives, two shifts of production, one shift of maintenance, the cycle progress is 0.6m, the daily cycle progress is 3.6m, that is, the advancing speed of the working face is 3.6m / d; based on 25 days per month, the monthly advance rate is 90m / month; based on 300 days per year, the annual advance rate is 1080m;

[0027] (3) The main equipment of solid filling mining face 17 are: MG200 / 466-WDH coal shearer; ZZC4800 / 16 / 32 self-ramming filling hydraulic support 3; SGB630 / 150 solid filling mining conveyor 4; SZZ-764 / 132 Self-moving filling material transfer machine 7; SDJ-150 coal transport belt conveyor 13 and SGZ gangue and fly ash belt conveyor 13.

[0028] (4) The solid filling mining face 17 adopts the compre...

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Abstract

A coal mining solid filling method comprises following steps: using the stacked solids on the ground as the filling materials for the working surface goaf, directly putting the solid filling materials from the ground to a belt conveyor in the underworkings by a perpendicular feeding well, transporting to the end of a coal face through the underground belt conveyor, reloading the solid filling materials to a solid filling mining conveyor hung under a back tail beam of a self-impacting type filling hydraulic support by a self-moving type filling material reloading machine. In the process of mining work, the coal is mined and the filling materials are filled on the bottom; and the solid filling materials are compacted by means of a compactor of the self-impacting type filling hydraulic support. The method solves the problem of coal compaction under the building and low coal recovery.

Description

technical field [0001] The invention relates to a coal mining method of solid matter filling in coal mines, and is especially suitable for the mining method of "three-down" coal pressing using solid matter filling. Background technique [0002] With the development of the economy and the progress of society, a consensus has been formed on the social responsibility of enterprises. In order to protect scarce resources, the state has issued a series of policies to urge enterprises to change the past "predatory" mining methods, forcing enterprises to increase resource recovery rates and associated resource utilization. The "three-down" coal mining has always been an issue worthy of attention. According to incomplete statistics, at present, the "three-down" coal pressing in the production mines of the unified coal mines in my country has reached 13.79 billion tons, of which 9.468 billion tons have been built, accounting for the total 69% of coal pressure. In order to improve the...

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Application Information

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IPC IPC(8): E21C41/16E21C47/02E21D23/16E21F15/06
Inventor 张吉雄缪协兴黄艳利巨峰
Owner CHINA UNIV OF MINING & TECH
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