Study of stress field in continuous mining of coal

Grasping the distribution characteristics of the supporting pressure and the variation with the mining advance, it provides the foundation for the colliery control theory and the decision making of efficient mining. The paper is to simulate the process of the mineral extraction by the technology of numerical simulation. In the process of mineral extraction the variation rule of the supporting pressure in the wall is payed attention to. Analyze the variation disciplinarian of them, then give some useful conclusions. There are certain guidances to the fieldwork.