分级循环荷载下保护层开采扰动煤岩强度及裂隙特性研究
杨永波,周哲

Strength and fracture characteristics of coal rock disturbed by protective layer mining under graded cyclic loading
Yong-bo YANG,Zhe ZHOU
图 6 煤样的裂隙三维重构及提取
Fig.6 Fracture three-dimensional reconstruction and extraction of coal sample