A coal mining method based on ecological environment protection
A technology for environmental protection and coal mining methods, applied in surface mining, earth-moving drilling, underground mining, etc., can solve problems such as environmental degradation and environmental cost, reduce disturbance times, reduce surface cracks, and meet the effectiveness of disaster prevention and mitigation. Effect
Active Publication Date: 2015-09-16
CHINA SHENHUA ENERGY CO LTD +1
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Problems solved by technology
[0005] In view of this, the object of the present invention is to provide an underground coal mining method based on ecological environment protection, which is used to solve the problem of the continuous deterioration of the ecological environment in the mining area and the environmental cost caused by it, and reduce the damage to the ecological environment
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Embodiment
[0047] This method is applied to the mining of an underground coal mine in the ecologically fragile area of Shanxi, Shaanxi and Inner Mongolia. Through the exploration of the geological data of the coal seam in the mining area, the average thickness of the coal seam is 3m, and the mining technology of super large working face is implemented. The parameters of the working face are changed from the original small working face (w × l × h = 240m × 2000m × 3m) is adjusted to a super large working face for mining (w × l × h = 360m × 4200m × 3m), after theoretical analysis and numerical simulation, the propulsion speed is initially set at 10m / d, which can effectively The ground surface damage in the coal mining subsidence area was alleviated. Through the analysis of the surface monitoring data in the later period, the surface was undulating. Therefore, the advancing speed of the working face was adjusted to 11.6m / d to achieve the minimum surface disturbance.
[0048] Through the com...
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The invention relates to an underground coal mining method based on ecological environment preservation, which is used for solving the problems of continuous deterioration of the ecological environments of underground mining areas and environmental costs caused by the continuous deterioration, and reducing damage to the ecological environment. According to the method, the geological properties of a coal field are investigated, an ultra-large working surface (ultra-long working surface, ultra-long propelling distance and ultra-large mining height) mining process is adopted during underground mining, and meanwhile, a reasonable propelling speed is designed, so that the requirement of prevention and reduction of natural disasters on the conventional method is met, the entire ground surface is settled, the turbulent times on the ground surface are reduced, and ground surface cracks are reduced. The method has contribution to the realization of high recovery rate of the coal, and also has contribution to the preservation of the ground surface ecological environment.
Description
technical field [0001] The invention belongs to the field of coal mining, and mainly relates to an underground coal mining method that reduces damage to the ecological environment. Background technique [0002] In the process of coal mining, it is inevitable to disturb the ecological environment (such as the ground surface and vegetation), breaking the original ecological environment balance. In the past, in response to the ecological environment problems (surface subsidence, surface cracks and vegetation damage) caused by coal mining, special coal mining methods or technical measures were adopted except in some special areas, such as densely built areas, railway areas or under water bodies. Most of them adopt the restoration and remedial measures of "post-harvest treatment" or "while mining and treatment", focusing on disaster prevention, mitigation and post-disaster treatment, which belongs to passive restoration. [0003] In order to reduce the damage to the ground surfa...
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IPC IPC(8): E21C41/16
Inventor 顾大钊曹志国杨俊哲王义胡振琪
Owner CHINA SHENHUA ENERGY CO LTD