摘要
降雨是引起边坡滑塌失稳的一个重要因素。因此在建立边坡变形统计回归模型时,对降雨因子函数进行优化选择具有重要的工程实际意义。基于统计回归模型中降雨因子函数忽略降雨时间远近对岩质边坡变形的影响,提出以待定指数函数代替单一降雨衰减系数的降雨分量函数。将3种降雨模型应用于某电站右岸边坡拉裂体变形监测资料中,分析表明改进后的降雨模型对前期降雨的拟合与实际情况更为吻合,较传统降雨模型各测点复相关系数均有所提升,该模型预测的准确性较高。
Rainfall is an important factor leading to slope collapse and instability.Therefore,it is of great practical significance to optimize the rainfall factor function when the statistical regression model of slope deformation is established.In this paper,based on the fact that the rainfall factor function in the statistical regression model ignores the influence of rainfall time on the deformation of rock slope,the undetermined exponential function is proposed to replace the rainfall component function of single rainfall attenuation coefficient.Three kinds of rainfall models are applied to the deformation monitoring data of the tensile crack body on the right bank slope of a power station.The analysis shows that the fitting of the improved rainfall model to the previous rainfall is more consistent with the actual condition,and the multiple correlation coefficient of each measuring point of the improved rainfall model is higher than that of the traditional rainfall model.The prediction accuracy of this model is high.
作者
单郸
陈辰
沈明毅
陈建康
裴亮
SHAN Dan;CHEN Chen;SHEN Ming-yi;CHEN Jian-kang;PEI Liang(Sichuan University College of Water Resource and Hydropower,Chengdu 610065,China;State Key Laboratory of Mountain River and Hydraulic Engineering,Sichuan University,Chengdu 610065,China)
出处
《中国农村水利水电》
北大核心
2020年第10期248-253,共6页
China Rural Water and Hydropower
基金
国家重点研发计划项目(2018YFC0407103)。
关键词
降雨分量
岩质边坡
拉裂变形体
统计回归模型
rainfall factor
rock slope
tension crack body
statistical regression model
