East2Open Coal Mine Area First Yield Numerical Simulation Analysis And Water Drainage Evaluation

This article through collecting the data paper, indoor material analysis such as sorting method, the number two victory coalfield open coal mine geological and hydrogeological characteristics. Studies suggest that, according to the open pit mining in the process of the influence of coal formation, the region can be divided into three main water cut rock group, the cretaceous4coal group of bedrock fissure water cut rock group, the cretaceous5, and6coal group of bedrock fissure water cut rock group and the following six coal group bedrock fissure water cut rock group. The water cut rock group rich water is weak, has the stable in the upper part of water-resisting layer, every water. The cretaceous4coal group of bedrock fissure water cut rock group for the purpose of research layer, the overlying water cut rock group under water and rock group fell to4coal group of bedrock fissure water cut rock group the flow were no supplies. The thesis in hydrology geology condition analysis results, and on the basis of the generalized the number two open coal mine of hydrogeological conceptual model, creating and hydrogeological conceptual model adaptation of the mathematical model, and finally with Visual Modflow numerical simulation, the calculation of out the first panel4coal group of bedrock fissure water cut rock group and study area yield water head distribution. With the multiple regression method paper by well logging parameters are calculated the permeability coefficient, so in the numerical simulation process to get the permeability coefficient of simulation division. With the method of numerical simulation of the first four coal mining group calculated bedrock fissure artesian water-bearing rock group yield of mine, that is, first of all to5811m3/d for constant flow when,model operation after the265d water level to the bottom aquifers;Secondly go on the head when,through calculation, head of the stable yield of4967.45m3/d;According to the numerical simulation of initial water head distribution area and two of the first area when water drainage scheme make Suggestions;Finally evaluation research area of the regional groundwater resources long-term drainage area and the influence of the environment.