Improved Hoek-Brown criterion and application of landslide zone of cataclastic rock mass mechanical strength in evaluation of Daguangbao landslide

被引：0

作者：

Feng W. ^{[1
]}

Wang Q. ^{[1
]}

Zhang G. ^{[1
]}

Liu Z. ^{[1
]}

Yi X. ^{[1
]}

机构：

[1] State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, 610059, Sichuan

来源：

Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering | 2017年 / 36卷

基金：

中国国家自然科学基金;

关键词：

Cataclastic rock mass; Daguangbao landslide; Hoek-Brown criterion; Mechanical strength parameters of rock mass; Slope engineering;

D O I：

10.13722/j.cnki.jrme.2016.0559

中图分类号：

TU4 [土力学、地基基础工程];

学科分类号：

081401 ;

摘要：

Aiming at lack study for mechanical parameters of cataclastic rock mass in sliding zone of Daguangbao landslide, a new method for obtaining mechanical parameters of rock mass is proposed based on the improved Hoek-Brown criterion. Firstly, the value of geological strength index GSI should be quantized by rock mass basic quality index BQ, surface rating SR, surface condition rate SCR and joint condition factor Jc. On this basis, an improved formula of disturbance factor D through rock mass basic quality index BQ was established. By field investigation and laboratory test of rock mechanics, the improved method is substituted into Hoek-brown criterion, and then the mechanical parameters of cataclastic rock mass in sliding zone of Daguangbao landslide is evaluated. Compared with the E. Hoek method, the mechanical parameters of rock mass obtained by the improved method are relatively small, which is closed to the previous suggestions. It proved that this method has a definite rationality. © 2017, Science Press. All right reserved.

引用

页码：3448 / 3455

页数：7

共 20 条

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