Fully-mechanized caving mining technology for sharp inclined coal seam based on U-shaped horizontal ventilation of artificial roadway
A steeply inclined, roadway technology, applied in mine/tunnel ventilation, tunnel, surface mining and other directions, can solve the problems of difficult mechanized mining, poor safety ventilation, low economic benefits, etc., to reduce roadway excavation and reduce machinery The effect of equipment use and low cost of use
Active Publication Date: 2018-10-16
张庆振
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Problems solved by technology
[0005] Aiming at the deficiencies of the prior art, the present invention provides a fully mechanized caving mining process for steeply inclined coal seams based on U-shaped horizontal ventilation of artificial roadways to solve the problems of poor safety ventilation, difficult mechanized mining, and low recovery rate in the current mining of steeply inclined coal seams. Low and low economic benefits
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[0018] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.
[0019] There is a steeply inclined coal seam 3 with an inclination angle of 50° and a coal seam thickness of 9m. At the design level, the roadway 1 is excavated by manual excavation or full-mechanized excavation machines, and then a working face is arranged with a height of 3m. For hydraulic support support, a conveyor is arranged at the back of the top coal hydraulic support on the working face, a loader is placed on one side of the working face, and equipment such as crushers and belt conveyors are arranged in the wind inlet trough 4. According to the specific conditions of the working face, the An artificial roadway 2 (i.e., the return air inlet of the fully mechanized caving working face) is placed under the end of the front probe beam of the h...
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The invention discloses a fully-mechanized caving mining technology for a sharp inclined coal seam based on U-shaped horizontal ventilation of an artificial roadway. A hydraulic bracket, a rear transporter, a transferring machine, a crusher and a belt machine are arranged on the fully-mechanized caving face, then according to the specific situation of the caving face equipment, the artificial roadway is placed on one side of an excavated roadway, the excavated fully-mechanized excavating roadway serves as a caving face air inlet roadway, and the artificial roadway serves as an air return roadway; and returned air of the caving face directly returns back to the mining area air return roadway through the artificial roadway, and thus the U-shaped ventilation requirement of the caving face ismet. After the artificial roadway is adopted for mining, the recovery rate is 100%, so that economic benefits are increased; and the artificial roadway can be designed according to the actual needs, any size, specification and shape can be designed, transporting under complex conditions is facilitated, the roadway is not damaged, and the artificial roadway has the characteristics of being capableof preventing fire, water and static electricity, resistant to impact, firm, durable, easy to close, capable of being recycled and the like and can be used repeatedly.
Description
technical field [0001] The invention relates to the technical field of coal seam mining, in particular to a fully mechanized caving mining technology for steeply inclined coal seams based on artificial roadway U-shaped horizontal ventilation. Background technique [0002] Steeply inclined coal seam refers to the coal seam with an inclination angle of more than 45° in underground coal seam mining. The mining of steeply inclined coal seams, especially thin and medium thick steeply inclined coal seams, mainly has the following disadvantages: poor safety conditions, poor support stability, and small production capacity of the working face , low efficiency, and it is difficult to realize the mechanization and centralization of production. At present, the mining of steeply inclined coal seams mostly adopts storage mining method, roadway caving coal mining method, and flexible shield support mining method to mine steeply inclined coal seams. These methods have improved the mining o...
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Login to View More IPC IPC(8): E21C41/18E21D9/14E21F1/00
CPCE21C41/18E21D9/14E21F1/006
Inventor 张庆振张矗于德磊
Owner 张庆振