Westerly花岗岩试样单轴压缩破坏瞬时微裂纹观察(英文)

被引：17

作者：

陈友晴

机构：

[1] 京都大学研究生院能源科学研究科

来源：

岩石力学与工程学报 | 2008年 / 27卷 / 12期

关键词：

岩石力学; 微裂纹; 花岗岩; 破坏过程; 单轴压缩;

D O I：

暂无

中图分类号：

TU458.3 [];

学科分类号：

摘要：

利用Nishiyama和Kusuda(1994)提出的荧光方法,对Westerly花岗岩试样单轴压缩破坏瞬时微裂纹进行详细的实验观察。应用这种方法,能同时有效、容易地确认微裂纹的产生方式,如长石颗粒间的解理裂纹、石英颗粒间的晶内裂纹和这些裂纹的宽区域分布。作为一个观察结果,确认拉长的相连裂纹对花岗岩破坏有直接影响,这些裂纹大致分为3类。据推测,这3类裂纹不能同时发展,每一类有不同的产生机制。单轴压缩下裂纹的产生机制是:首先,在平行于施加荷载方向产生许多微裂纹,长裂纹是通过延长和合并微裂纹诱发产生的;然后,通过进一步加载,产生断层面,各部分的裂纹被连接、扩展;最后,花岗岩试样发生破坏。

引用

页码：2440 / 2448

页数：9

共 15 条

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