Research on Control System of Mine Water Outflow

本项目取得的主要成果如下。(1)在地下水补给和排泄观测的基础上，研究了露天矿开采巷道和岩质边坡周围地下水动态的模拟和分析方法。(2)提出了简单而有效的建模和分析方法，采用二维或轴对称有限元方法和适当的边界条件。通过该方法，为矿井突水控制系统的研究提供了许多有用的数据。(3)提出了三维渗流分析系统。这些系统对于复杂的地下结构和地表的建模是非常方便的。(4)研究了岩体节理的微观观测和量化方法，以估算岩体的渗透系数。

Main results obtained in this project are following. (1) Modeling and analyzing methods for underground -water behavior are investigated arround the mining openings and rock slopes of surface mining, based on the observation of underground water supply and outflow. (2) Simple but effective methods for modeling and analyzing are proposed, using two dimensional or axisymmetric finite element method and suitable boundary conditions. By this method, many useful data for investigation on control systems of mine water outflow are obtained. (3) 3 dimensional seepage analyzing systems are proposed. Those systems are very convenient for modeling of complex underground structures and surface. (4) Microscopic observations and quantifying methods for rock joints are investigated, to estimate coefficients of permeability of rock mass.