济宁二号煤矿西部主采区涌水量解析法预测

为解决即将开采的西部主采区涌水量预测问题，通过对三个采区地质和开采条件的分析，确定顶板砂岩水是采区的主要水源。选取相关水文地质参数，建立了涌水量预测计算模型，并以大井法对三个采区的涌水量进行预测评价。与地质条件相似的已开采采区实测涌水量的对比分析表明，十三、十五和十七采区的涌水量分别为22．85、18．76、19．37m。／h。预测结果对三个采区的水害防治将起到重要的参考价值。

Analytical method estimate of water inflow in western main mining area of Jining No. 2 coal mine

Aimed at the prediction of water inflow of western main mining area, this paper describes the roof sandstone water determined as a major source of water by analyzing geological and mining condi- tions of the three mining areas. The determination comes from the development of the water inflow fore- casting model, the selection of the relevant hydrogeological parameters, forecast and evaluation of the wa- ter inflow of three mining areas by the Virtual large diameter well method, and comparative analysis of the water inflow occurring in mined areas with a similar geological condition. The thirteenth, fifteenth and seventeenth mining area are found to give the mine water inflow of 22.85,18.76,19.73 m3/h respective- ly. The prediction would be of reference value for the prevention and control of water disaster in the three mining areas.