摘要
对岩质边坡降雨入渗的数学模型及模拟方法进行了探讨。在此基础上,研究了非饱和-饱和渗流模型中的非线性方程组及其解法,给出了Picard迭代法求解该方程组的方法、步骤,并对边坡降雨入渗的规律进行了研究,阐述了岩质边坡降雨入渗过程中基质吸力的变化、暂态饱和区的形成、发展以及暂态水压力的分布、变化。用上述方法分析、模拟了某露天矿边坡降雨入渗的全过程。
The mathematical model of rainfall infiltration on the rock slope and the numerical simulation method for this model is discussed. Based on this, the system of nonlinear equations in saturated-unsaturated seepage model is researched. The solution method and process of the system of nonlinear equations with Picard iteration method is given. The pattern of rainfall infiltration on the rock slope is analyzed. The variation of matrix suction, the formation and development of transient saturated zone, and the distribution and variation of transient water pressure in the process of rainfall infiltration on the rock slope are described. All the stages of rainfall infiltration on rock slope in a given open pit mine is simulated with the presented method.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2003年第4期625-629,共5页
Chinese Journal of Rock Mechanics and Engineering
基金
国家自然科学基金重大研究计划(90102002)
关键词
数值分析
非饱和-饱和渗流
基质吸力
暂态饱和区
暂态水压力
PICARD
迭代法
numerical analysis, saturated-unsaturated seepage, matrix suction, transient saturated zone, transient water pressure, Picard iteration
