An integrated evaluation of coal seam fracture development in terms of coal seam breaking index and deforming coefficient to predict high permeability area.
本文采用煤层断裂破坏指数、变形系数对煤裂隙发育程度进行综合评价，来预测高渗区。
3
On the interface where there are non-horizontal fractures, reflection coefficient of P-P wave has more extrema to show complexity and to fail to directly indicate fracture strike.