Abstract:

To study mechanized caving face in the case of different mining high water-rich overburden rock failure characteristics, to 401101 face as engineering background, using physical modeling experiment of the first mining methods Hujiahe Mine, by three different mining height (10m,8m,6m) experiment, the overburden destruction of position to compete in different mining face advancing to 180m water flowing fractured zone height can reach the aquifer, based on analysis of mining rock in the cycle breakingand fracture development process, and changes in the distribution of support pressure.Conclusions can provide reliable for the first face of Hujiahe Mine mining height reference, in order to avoid the occurrence of a wide range of roof permeable disaster.

Key words: rich water overburden rocks, caving mining, height of water flowing fractured zone, roof permeable