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
Strength and fracture characteristics of coal rock disturbed by protective layer mining under graded cyclic loading
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 7 距开切眼255 m的煤岩三维裂隙分形维数计算 |
| Fig.7 Calculation of fractal dimension of three-dimensional fracture of coal rock at 255 m from open-off cut |
|
|