摘要
该文以宁波孔墅渣土场为例,基于单因素分析法和正交试验法,选取渣土容重、坡角、堆填高度、黏聚力以及内摩擦角5个影响因素,采用极限平衡法计算安全稳定性系数作为试验指标,对渣土边坡稳定性影响因素敏感性进行了研究,并结合极差分析法和方差分析法对结果进行了分析。结果表明:单因素分析法和正交试验法敏感性分析结果较为一致,各影响因素敏感性由大到小依次为黏聚力、内摩擦角、堆填高度、坡角和容重;渣土黏聚力、内摩擦角和堆填高度对渣土边坡稳定性具有显著影响,是渣土边坡稳定性主要影响因素;相较于单因素分析法,正交试验法分析结果更为可靠、准确。研究成果可为渣土场设计及渣土边坡支护提供参考。
Taking the Kongshu Muck Field in Ningbo as an example,based on the single factor analysis method and orthogonal test method,this paper selects five influencing factors such as muck bulk density,slope angle,filling height,cohesion and internal friction angle,and uses the limit equilibrium method to calculate the safety stability coefficient as the test index to study the sensitivity of influencing factors of muck slope stability.The results are analyzed by range method and analysis of variance.The results show that the sensitivity analysis results of single factor analysis method and orthogonal test method are relatively consistent.The sensitivity of each influencing factor from large to small is cohesion,internal friction angle,filling height,slope angle and bulk density;The muck cohesion,internal friction angle and filling height have significant effects on muck slope stability,which are the main influencing factors to muck slope stability;Compared with single factor analysis,the results of orthogonal test are more reliable and accurate.The research results can provide reference for the design of muck yard and muck slope support.
作者
王华俊
卿翠贵
张玘恺
董理金
姚文杰
Wang Huajun;Qing Cuigui;Zhang Qikai;Dong Lijin;Yao Wenjie(Zhejiang Engineering Survey and Design Institute Group Co.,Ltd.;Zhejiang institute of Hydrogeology and Engineering Goelogy)
出处
《勘察科学技术》
2022年第1期23-27,共5页
Site Investigation Science and Technology
基金
国家自然科学基金资助项目(51774131)
浙江省水文地质工程地质大队科研项目(2020-45-2)
关键词
渣土边坡
单因素分析法
正交试验法
敏感性分析
影响因素
muck slope
single factor analysis
orthogonal test method
sensitivity analysis
influence factor
