岩土工程学报2017，Vol.39Issue(9)：1718-1723,6.DOI:10.11779/CJGE201709021
大光包滑坡滑带碎裂岩体原位钻孔剪切试验研究
In-situ borehole shear tests on cataclastic rock mass of Daguangbao landslide
摘要
Abstract
Daguangbao landslide is the largest landslide triggered by the Wenchuan earthquake. The exposed sliding zone with a length of 1.8 km and highly ruptured rock mass is located at the south side of the landslide, which has attracted great attention across the world. To evaluate the strength parameters of cataclastic rock mass in the sliding zone accurately, a detailed field survey work is carried out on the basis of previous researches by using a France Phicometre dual-purpose geotechnical in-situ borehole shear tester to investigate the cataclastic rock mass in Daguangbao landslide slip zone. A comparative analysis among the test results, the values of Hoek-Brown strength criterion and the mechanical parameter values based on the engineering geologic analogy method is performed. Finally, the mechanical parameter values of the rock mass of the Daguangbao landslide of the south side are proposed: its cohesion is from 245 kPa to 480 kPa, and its internal friction angle is from 25.0°to 26.5°.关键词
大光包滑坡/碎裂岩体/原位钻孔剪切试验/抗剪强度/Hoek-Brown强度准则Key words
Daguangbao landslide/cataclastic rock mass/in-situ borehole shear test/shear strength/Hoek-Brown strength criterion分类
建筑与水利引用本文复制引用
冯文凯,易小宇,葛华,王琦,刘志刚,张光鑫..大光包滑坡滑带碎裂岩体原位钻孔剪切试验研究[J].岩土工程学报,2017,39(9):1718-1723,6.基金项目
国家自然科学基金项目(41572291,41302287) （41572291,41302287）
四川省青年科技创新研究团队专项计划项目(2017TD0018) （2017TD0018）
地质灾害防治与地质环境保护国家重点实验室团队项目(SKLGP2016Z001) （SKLGP2016Z001）
中国地质调查局项目(DD20160274) （DD20160274）
