Abstract: On the basis of analysis to features and active mechanism of ground water in rock slope a drain model is provided in this paper.Then it sets up differential drain dominated equation.Finally,optimal drain directions are determined through sensitive analysis to the equation.The results are valuable in course of research on seepage of the ground water in slope rock mass,slope stability of reservoir banks and valid drain of rock landslides,which fertilizes studies of rock mass hydraulics and mountainous disaster.

Key words: rock mass, ground water, optimize drain, drain hole

摘要： 基于对岩体边坡中地下水的存在性态及作用机理分析,提出了实用排水模型;建立了排水微分控制方程,通过敏感性分析求解此方程而得到岩体中地下水的优化排水方向.此成果在岩体边坡地下水渗流、库岸边坡岩体中地下水的有效排泄、岩体滑坡有效排水等方面具有重要的实用价值,丰富了岩体水力学及山地灾害学的科学内涵

关键词: 岩体, 地下水, 优化排水, 排水孔