边坡稳定性分析中水力计算问题探讨  

Discussion on Hydraulic Calculation in Slope Stability Analysis

作　　者：方玉树 Fang Yushu

机构地区：[1]陆军勤务学院,重庆401311 [2]岩土力学与地质环境保护重庆市重点实验室,重庆401311

出　　处：《重庆建筑》2021年第7期60-64,共5页Chongqing Architecture

摘　　要：不少专家学者在《岩土工程学报》发表过论述边坡稳定性分析中水力概念与计算的文章。本文对其中的水力计算问题进行了分析,结果表明:条块底面以中点代表的水压力稍小,用两端点计算的水压力较接近实际;单元或条块边界水压力与渗透力和浮力两者等价并不意味着在边坡稳定性分析中可以直接用渗透力和浮重建立力平衡方程;对黏性土边坡而言,水力计算对稳定性计算影响最大的因素是水压率。Many experts and scholars have published papers discussing hydraulic concepts and calculations in slope stability analysis in Chinese Journal of Geotechnical Engineering.This paper analyzed the hydraulic calculation issue,and the results showed that the water pressure represented by the midpoint on the bottom of the bar is slightly lower,and that calculated by the two end points is closer to the reality;The equivalence of the external boundary water pressure and the seepage force and the buoyancy force does not mean that the seepage force and the buoyant weight can be used to establish force balance equations directly in slope stability analysis;For cohesive soil slopes,the factor that hydraulic calculation has the greatest influence on stability calculation is the hydraulic pressure rate.

关 键 词：边坡 稳定性分析 水力计算 水压力 渗透力 水压率 

分 类 号：TU43[建筑科学—岩土工程]