摘要
为研究黄土沟壑区坡体稳定性影响因素,结合边坡安全系数,应用正交实验法,得到影响因素影响程度排序:坡体角度>坡高>内摩擦角>内聚力>土体容重,结果表明坡体角度是黄土沟壑区坡体稳定性最主要的影响因素。基于数值模拟结果,通过回归分析拟合给出黄土沟壑区边坡安全系数与影响因素的综合函数表达式,通过实例予以验证,结果表明函数表达式具有较高可信度,为类似地质条件下坡体滑移、滑坡等地质灾害预测和边坡临界滑裂面预测提供一定参考。
In order to study the influencing factors of slope stability in loess gully region, combined with the slope safety factor, the influence degree of slope stability is ranked as: slope angle > slope height>internal friction angle>cohesion>soil unit weight by orthogonal experiment. The results show that slope angle is the most important influencing factor of slope stability in loess gully region. Based on the results of numerical simulation, the comprehensive function expression of slope safety factor and influencing factors in loess gully region is given by regression analysis and fitting, which is verified by an example. The results show that the function expression has high reliability, which can provide a certain reference for the prediction of slope slip, landslide and other geological hazards under similar geological conditions and the prediction of slope critical slip surface.
作者
伍永平
罗宇恩
贺圣林
WU Yong-ping;LUO Yu-en;HE Sheng-lin(School of Energy,Xi′an University of Science and Technology,Xi′an 710054,China)
出处
《煤炭技术》
CAS
2019年第12期70-73,共4页
Coal Technology
基金
国家自然科学基金资助项目（51774230）
关键词
正交实验
坡体稳定性
数值模拟
边坡安全系数
函数表达式
orthogonal experiment
slope stability
numerical simulation
safety factor of slope
function expression
