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本文介绍了已充填采场的充填和脱水的计算机模型,原先开发了一个二维模型,适用于二维采场几何形状和均匀充填体的简单参数模型;本模型是这个二维模型的发展。根据获得的大量现场数据,开发了新的三维模型,其目的是增加若干功能、使模型能更切合实际地模拟实际采场的脱水。特别是能模拟几何形状不规划的采场和不均质的充填体,能预测采场中指定地点的压力与流量。因此,对于在现场条件下使用来说,它比原来模型具有更大的潜在能力. 采用基于单元的方法建立采场几何形状和充填体中的水流模型。也可以建立在空间上和时间上有变化的采场充填体的沉积模型。既可在饱和状态下,也可在部分饱和状态下进行水流模拟。不饱和区的模拟,采用与问题相适应的尺度,尽管采用大时段和大单元尺寸,仍特别注意保持数值的稳定。模型测试表明,扩展为三维并增加部分饱和水流区,对于模拟充填体脱水过程是极其有用的。文中举一个例子说明模型的应用。
This paper presents a computer model of the filling and dewatering of a stope, and originally developed a two-dimensional model that is suitable for simple parametric models of two-dimensional stope geometry and uniform filling; this model is the development of this two-dimensional model. Based on a large amount of field data obtained, a new three-dimensional model was developed with the objective of adding several functions to make the model more realistic to simulate the actual stope dehydration. In particular, stopes and inhomogeneous filling bodies that can simulate geometrically unplanned conditions can predict the pressure and flow at a given location in a stope. Therefore, it has greater potential than the original model for use in field conditions, using a cell-based approach to establish the stope geometry and flow model in the fill. It is also possible to establish sedimentary models of stope fill bodies that vary in space and time. Water flow simulation can be done both in a saturated state and in a partially saturated state. Unsaturated zones are modeled using a scale that is compatible with the problem, with particular attention to keeping the values stable despite large periods and large unit sizes. Model tests show that extending to three dimensions and increasing the fraction of saturated water flow area are extremely useful for modeling the filling body dewatering process. The article gives an example to illustrate the application of the model.