摘要
考虑公路工程施工过程中常遇见黏土边坡,针对黏土材料特殊性质,采用多种方法对边坡稳定性状态进行分析,优选出黏土边坡稳定性计算方法。通过对比计算结果,发现黏土边坡中黏聚力发挥的作用程度大于内摩擦角,折减比例K选取[1.1,1.4]进行计算较为合理,不同折减方式计算的安全系数均在1.3左右。为反映计算过程强度参数演化规律,在允许试验的条件下,选用非等比例相关联折减法最可靠;而未进行试验的情况下,建议采用临界曲线法分析黏土边坡稳定性。
Since clay slope is often encountered in the construction of highway engineering,various methods are used to analyze the stability state of the clay slope with specific characteristics,thus to optimize the stability calculation method of clay slope.By comparing the calculation results,the adhesive force plays a more important role than the internal friction angle in the clay slope.The discount ratio Kin the range from 1.1 to 1.4 is more reasonable,and the safety factors of different discount methods are all about 1.3.To reflect the evolution law of strength parameters during calculation,the non-equidistant proportion discount method is the most reasonable under the allowable test.Without experiment,it is recommended to employ the critical curve method to analyze the stability of clay slope.
作者
李浚弘
吴顺川
张化进
张中信
LI Junhong;WU Shunchuan;ZHANG Huajin;ZHANG Zhongxin(Faculty of Land Resource Engineering,Kunming University of Science and Technology,Kunming,Yunnan 650093,China)
出处
《矿业研究与开发》
CAS
北大核心
2021年第3期23-27,共5页
Mining Research and Development
基金
国家重点研发计划专项资助项目(2017YFC08053003).
关键词
黏土边坡
双系数折减
临界曲线
折减比例
Clay slope
Double coefficient discount
Critical curve
Discount ratio
