On the basis of the combination and classification of the lithological character and the feature of underground water distribution, a slope stability calculation method is introduced, which includes the effect of pore water in the eluvial slope, fissure water in the aerated zone and fissure phreatic water.

The height of water flowing fractured zone is 55 m by traditional esti- mation method,so that the water can not reach sand-gravel water-bearing bed.

Comprehensive supporting practice of fracture water-weakened roadway in softrock mass;

The fractures distribution and fracture rock mass permeation research is the premise condition that to study groundwater movement and pollutant migration in fracture rock mass in bed rock area, which includes the dominance orientation of fracture that groundwater fluxes in it, the brisk zone distribution of fracture water and the permeability calculation of rock mass.

According to the natural geographic and geological structure of Xiya o watershed, this paper analyzes and demonstrates the causes of the Trias Liujia gou Group s fracture water in Yuci Xiyao watershed, and makes forecast of the st orage capacity of Liujiagou Group s fracture water.

Comprehensive administration for shaft crevice water in Liujia Coal Mine;