Method for filling coal-steam-free extraction working surface goaf by coal mine waste rock

A technology for working face and goaf, which is applied in filling materials, ground mining, mining equipment, etc., can solve the problems of ineffective gangue filling, inability to support the roof, and high labor intensity of employees, so as to save land acquisition costs and improve the environment of coal mines. , the effect of filling a wide area

Inactive Publication Date: 2007-03-28
SHANDONG SHENGQUAN MINING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the small filling capacity of the roadway, it is impossible to completely solve the problem of gangue not being lifted into the well; the method of filling gangue in the gob area of ​​the mining face is not solid, and cannot form effective support for the roof and solve the problem of surface deformation.
At the same time, this method leaves a coal pillar filling process to reduce the coal recovery rate, which is only 75%, resulting in a waste of resources
The construction process of this method is complicated, and the supporting materials such as columns and beams used in the process cycle are frequently transported, and the labor intensity of the workers is high.

Method used

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  • Method for filling coal-steam-free extraction working surface goaf by coal mine waste rock
  • Method for filling coal-steam-free extraction working surface goaf by coal mine waste rock
  • Method for filling coal-steam-free extraction working surface goaf by coal mine waste rock

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Embodiment Construction

[0019] As shown in Fig. 1-Fig. 5, the present invention adopts no coal pillar mining, adopts the belt and scraper conveyor of the prior art to transport gangue, and the gangue belt throws gangue at high speed to realize the coal mine gangue filling of the mining face without coal pillar. Area. The raw gangue produced by each excavation of the mine head-on is directly transported to the gangue unloading lane 7 by a 1-ton mine car, and the gangue is turned over to the gangue bin 9 by the cantilever cart machine 8 jacked into the gangue bin 9, and a funnel is installed at the bottom of the gangue bin 9 The gate 15 is evenly discharged to the gangue transporting scraper conveyor 16 through the funnel gate 15, through the gangue transporting belt conveyor 4, the gangue transporting scraper conveyor 13 on the working face, the gangue transporting scraper conveyor 11 on the working face, Then the gangue is thrown to the goaf by the high-speed gangue belt 12. Because the filling width...

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Abstract

The invention relates to a method to filling non-coal column face workplace by gangue. It includes the following steps: directly transferring the gangue to gangue storehouse, discharging to the slat conveyer through hopper gate, transferring the gangue to face through gangue transferring belt, face slat conveyer, and high speed gangue throwing belt. It needs not to smash the gangue and could realize zero stacking of gangue to improve coal mine environment. The invention supplies a new coal mining method for realizing environment protecting exploitation.

Description

[0001] Application field [0002] The present invention relates to a method for filling the goaf of the mining face in the field of coal mining, in particular to mining without coal pillars in the coal mining face, the gangue of the mine is impacted at high speed, squeezed and fastened, the gob is enriched, and the deformation of the ground surface is reduced. gangue filling mining method in coal mining face. Background technique [0003] At present, the total accumulation of gangue in my country exceeds 2.5 billion tons, and it is increasing at a rate of 130 million tons per year. A large amount of coal gangue is stored in the open air for a long time, and the sulfide contained in the gangue will pollute the air and water sources after being emitted. The pyrite contained in the gangue is easily oxidized by the air, and the heat released can promote the weathering of the coal contained in the gangue to make it natural .The gas emitted when the gangue is burned seriously pollu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F15/00E21F13/00E21C41/16
Inventor 孙华璋杨士江刘灿华付振峰李乃福王敏杰王怀德巩学刚马仁峰冀慎利
Owner SHANDONG SHENGQUAN MINING
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