大光包滑坡滑带碎裂岩体原位钻孔剪切试验研究

冯文凯; 易小宇; 葛华; 王琦; 刘志刚; 张光鑫

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 English Version

1. 地质灾害防治与地质环境保护国家重点实验室（成都理工大学）,四川成都 610059;
2. 中国地质调查局成都地质调查中心,四川成都 610081

基金项目: 国家自然科学基金项目（41572291,41302287）; 四川省青年科技创新研究团队专项计划项目（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）; 中国地质调查局项目（DD20160274）

详细信息

作者简介:
冯文凯(1974- ),男,博士,教授,博士生导师,主要从事区域稳定与岩体稳定以及地质灾害防治方面的研究和教学工作。E-mail: fengwenkai@cdut.cn。

中图分类号: TU45
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出版历程
- 收稿日期: 2016-05-24
- 发布日期: 2017-09-24

In-situ borehole shear tests on cataclastic rock mass of Daguangbao landslide

1. State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, China;
2. Chengdu Institute of Geology and Mineral Resources, Chengdu 610081, China

摘要

摘要: 安县大光包滑坡是汶川地震触发的最大规模滑坡,滑坡南侧暴露长约1.8 km顺层滑带,其岩体高度碎裂化,引起广泛关注。为准确评价滑带碎裂岩体的强度参数,笔者在前人研究的基础上开展了细致的野外调查工作,采用法国Phicometre岩土两用原位钻孔剪切试验仪对大光包滑坡滑带碎裂岩体进行了原位剪切试验。将试验结果与Hoek-Brown岩体强度准则估值和基于工程地质类比法的力学参数建议值进行了对比分析。基于以上研究,提出了大光包滑坡南侧顺层滑带碎裂岩体力学参数建议值：内聚力为245~480 kPa,内摩擦角为25.0°~26.5°。
- 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
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°.
- Daguangbao landslide /
- cataclastic rock mass /
- in-situ borehole shear test /
- shear strength /
- Hoek-Brown strength criterion

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参考文献(17)

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