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[1]吴顺川,李浚弘,张化进,等.考虑岩土体剪胀特性的边坡稳定性分析*[J].中国安全生产科学技术,2020,16(10):108-114.[doi:10.11731/j.issn.1673-193x.2020.10.017]
　WU Shunchuan,LI Junhong,ZHANG Huajin,et al.Analysis on slope stability considering shear dilatation characteristics of rock and soil mass[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2020,16(10):108-114.[doi:10.11731/j.issn.1673-193x.2020.10.017]
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考虑岩土体剪胀特性的边坡稳定性分析*
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
16
期数:
2020年10期
页码:
108-114
栏目:
职业安全卫生管理与技术
出版日期:
2020-10-30

文章信息/Info

Title:
Analysis on slope stability considering shear dilatation characteristics of rock and soil mass
文章编号:
1673-193X(2020)-10-0108-07
作者:
吴顺川; 李浚弘; 张化进; 程海勇; 张小强; 张中信
（昆明理工大学 国土资源工程学院，云南 昆明 650093）
Author(s):
WU Shunchuan;  LI Junhong;  ZHANG Huajin;  CHENG Haiyong;  ZHANG Xiaoqiang;  ZHANG Zhongxin
(Faculty of Land Resource Engineering,Kunming University of Science and Technology,Kunming Yunnan 650093,China)
关键词:
边坡工程; 非关联流动; 剪胀角; 强度折减法; 等效参数
Keywords:
slope engineering;  noncorrelated flow;  shear dilatation angle;  strength reduction method;  equivalent parameters
分类号:
X951
DOI:
10.11731/j.issn.1673-193x.2020.10.017
文献标志码:
A
摘要:
为考虑岩土体剪胀特性对边坡稳定性的影响，基于非关联流动法则，利用等效内摩擦角的概念对原抗剪强度参数进行修正，以修正后的等效参数c*，φ*探讨剪胀角对岩土体强度的影响，结合传统强度折减法以及基于临界曲线的双系数折减法，求解基于修正后等效参数计算的边坡安全系数，并给出安全系数的取值方法。结果表明：采用等效参数来考虑剪胀角的影响是可行的；随剪胀角的增大安全系数增大，且增长速度变缓，剪胀角在0~25°范围内对安全系数的影响显著，在实际工程计算中需要考虑剪胀角对边坡稳定性的影响；基于临界曲线的双系数折减法可较为直观地体现出剪胀角的影响程度，在研究剪胀角对边坡稳定性的影响时可采用此方法进行分析。
Abstract:
In order to consider the influence of shear dilatation characteristics of rock and soil mass on the slope stability,based on the law of noncorrelated flow,the concept of equivalent internal friction angle was utilized to modify the original shear strength parameters,and the modified equivalent parameters c* and φ* were used to reflect the influence of shear dilatation angle on the strength of rock and soil mass.Combining with the traditional strength reduction method and the doublefactor reduction method based on the critical curve,the slope safety factor calculated with the modified equivalent parameters was solved,and the valuing method of the safety factor was given.The results showed that considering the influence of shear dilatation angle by using the equivalent parameters was feasible.With the increase of the shear dilatation angle,the safety factor increased,and the growth rate decreased.The shear dilatation angle had significant influence on the safety factor in the range of 0~25°.In the actual engineering calculation,it was necessary to consider the influences of shear dilatation angle on the slope stability.The doublefactor reduction method based on the critical curve could reflect the degree of influence of the shear dilatation angle more intuitively.This method can be used to analyze the influence of shear dilatation angle on the slope stability.

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备注/Memo

备注/Memo:
收稿日期： 2020-07-13
* 基金项目： 国家重点研发计划项目（2017YFC0805303）
作者简介： 吴顺川，博士，教授，主要研究方向为采矿工程、岩土工程灾害防控。
通信作者： 张小强，博士，讲师，主要研究方向为边坡失稳机理及灾害防控。
更新日期/Last Update: 2020-11-21