According to overall mean square root of weighted deviation, presented an evaluation model of "geology-technique-social conditions" with a significant index sys
For a safe extracting of the mine resource of the razor-thin capping rock,a study of waterproof,sand prevention,roof-fall prevention must be made.As a result,it
In the paper,the foundation,development,basic conception and general characteristics of fractal and the calculating method of the fractional dimension are expou
The underground water has been contaminated seriously by the leaching water of dumping area or hillock. To determine the pollution limits of underground water,
The safety status of the coal mines is closely correlated with the operating status and its changes of the whole working system in the coal mines, and the safet