冻融作用下条带状磁铁石英岩破裂失稳过程裂纹演化特征试验研究
邵国梁, 夏冬, 贾淯斐, 李铸熙, 严加驹

Experimental Study on Crack Evolution Characteristics of Banded Magnetite Quartzite During Fracture Instabiligy Under Freeze-thaw Action
Guoliang SHAO, Dong XIA, Yufei JIA, Zhuxi LI, Jiaju YAN
表3 不同冻融循环周期下条带状磁铁石英岩裂纹数量分布
Table 3 Distribution of cracks number in banded magnetite quartzite under different freeze-thaw cycles

冻融周期

/次

压密阶段弹性变形阶段裂纹稳定发展阶段微裂隙加速发展阶段

裂纹总数

/条

拉伸裂纹/条剪切裂纹/条拉伸裂纹/条剪切裂纹/条拉伸裂纹/条剪切裂纹/条拉伸裂纹/条剪切裂纹/条
干燥6816506024 5531 2745 978
饱水11621603012 8243213 310
10921367115031 5763532 255
2038180601 2132761 542
40608180301 2013961 688
704139505101113645621 758
1002608002068754331 107
130101281162249317804
180131417532211 172601 568
230781576414611 192582 056
28047412161191893441 235