Application of fully mechanized coal mining technique in low coal seams in Xiang shui Coal Mines

Combined mining system and its application in Chinese surface mining;

3 coal seam and its hydrogeological conditions, and points out that the top coal caving on fully-mechanized working face has overcame some problems such as the difficult movement of the breaker because the heavy pressure of the main tunnel, the serious wall caving on the working face, and the working face\'s passing through fault, etc.

Research on mining technology of combined mining at large inclined angle "three soft" coal seam

That is to say,with the increased length in strike,improved mining technology,improved gateway layout,optimized production system and others,the mining rate in th.

According to the up an d down coal mining face features and the advanced experiences of the combined mining for seams with a closed distance at home and broad,the paper rationally set the mining technology and the alternate distance for the up and down seam mining.

The mining craft of longwall mining method has many characteristics.

This Paper introduces building situation of high output and high efficiency and remarkable technical financial result from 1992,it makes modernized mining craft and coal production develop to high output and efficiency and high safety and high reliability with new technolog

The choice principle of mining craft way is pointed out.