Research Status and Prospect of the Quantitative Description on the Roof Fissure Zone

摘要

In order to quantify the damage degree of fissure zone coal seams, research findings of quantitative description of fissure zone in China were presented in the paper, different opinions and methods of research on quantitative description of fissure zones were expounded, so were the processes of development. Existing research findings on quantitative description of fissure zone were analysed. Currently, research on quantitative description of fissure zones has developed from semi-quantitative to quantitative and the evolution of the fracture field is closely related to the seepage field and stress field received wide acceptance. The future of quantitative description of fissure zone was discussed.