邵寨煤矿地下水流数值模拟及涌水量预测  

Numerical simulation of groundwater flow and prediction of water inflow in Shaozhai Coal Mine

作　　者：蔚波 王海东 刘甜甜 韩强 李福程 李锦元 展学良 WEI Bo;WANG Haidong;LIU Tiantian;HAN Qiang;LI Fucheng;LI Jinyuan;ZHAN Xueliang(Xi’an Coal Machinery Company’s Two Technology Achievements Won Shaanxi Science and Technology Award,Xi’an 710076,Shaanxi,China;Shandong Energy Northwest Mining Shaozhai Coal Industry Co.,Ltd.,Pingliang 744400,Gansu,China;Xi’an University of Science and Technology,Xi’an 710054,Shaanxi,China)

机构地区：[1]中煤科工西安研究院(集团)有限公司,陕西西安710076 [2]山东能源西北矿业邵寨煤业有限公司,甘肃平凉744400 [3]西安科技大学,陕西西安710054

出　　处：《矿产勘查》2024年第S2期687-690,共4页Mineral Exploration

基　　金：陕西省教育厅自然科学专项基金(21JK0754)资助。

摘　　要：数值模拟法在模拟矿井涌水量随采掘变化方面具有较高的准确性。本文在构建邵寨井田5#煤层顶板至洛河组的三维地下水流数值模型的基础上,根据矿井涌水量台账反算开采后工作面上覆岩层的渗透系数,通过不断调整工作面上覆岩层渗透系数使得模型计算的工作面涌水量与实际工作面涌水量接近,使得模型的渗透系数更符合受扰动后上覆岩层的渗透系数,且能够确定导水裂隙带发育的层位,反算结果表明开采5#煤层形成的导水裂隙带并未导通洛河组,因此,矿井涌水量偏小。回采1202工作面时矿井涌水量预测为88 m^(3)/h;回采1503工作面时矿井涌水量预测为121 m^(3)/h;回采2501工作面时矿井涌水量预测为137 m^(3)/h;回采1505工作面时矿井涌水量预测为157 m^(3)/h;回采1203工作面时矿井涌水量预测为179 m^(3)/h;回采2503工作面时矿井涌水量预测为187 m^(3)/h。The numerical simulation method has high accuracy in simulating the variation of mine water inflow with excavation.On the basis of constructing a three-dimensional numerical model of groundwater flow from the roof of the 5#coal seam to the Luohe Formation in the Shaozhai mine field,the permeability coefficient of the overly-ing strata on the mining face is calculated based on the mine water inflow ledger.By continuously adjusting the permeability coefficient of the overlying strata on the working face,the calculated water inflow of the working face is close to the actual water inflow of the working face,making the permeability coefficient of the model more in line with the permeability coefficient of the disturbed overlying strata,And it is possible to determine the development layer of the water conducting fracture zone.The back calculation results indicate that the water conducting fracture zone formed by mining the 5#coal seam did not lead to the Luohe Formation,therefore,the water inflow of the mine is relatively small.The predicted water inflow of the mine during mining face 1202 is 88 m^(3)/h;The predicted water inflow of the mine during the mining of 1503 working face is 121 m^(3)/h;The predicted water inflow of the mine during the extraction of the 2501 working face is 137 m^(3)/h;The predicted water inflow of the mine during the min-ing of 1505 working face is 157 m^(3)/h;The predicted water inflow of the mine during the mining of 1203 working face is 179 m^(3)/h;The predicted water inflow of the mine during the extraction of the 2503 working face is 187 m^(3)/h.

关 键 词：涌水量预测 数值模拟 渗透系数 

分 类 号：TD742[矿业工程—矿井通风与安全]