侏罗系含水层地下水动态特征及其涌水量预测  

Characteristics of groundwater dynamics in Jurassic aquifers and surges prediction

作　　者：疏义国 李亚昊 王宏伟 孔皖军 Shu Yiguo;Li Yahao;Wang Hongwei;Kong Wanjun(Huainan Western Mine Investment Management Corporation Ltd.,Erdos Inner Mongolia 017000,China;College of Earth and Environment,Anhui University of Science and Technology,Huainan 232001,China;Erdos Huaxing Energy Corporation Ltd.,Erdos 017000,China)

机构地区：[1]淮南西部煤矿投资管理有限公司,内蒙古鄂尔多斯017000 [2]安徽理工大学地球与环境学院,安徽淮南232001 [3]鄂尔多斯市华兴能源有限责任公司,内蒙古鄂尔多斯017000

出　　处：《煤炭与化工》2020年第6期50-57,共8页Coal and Chemical Industry

摘　　要：我国西部地区侏罗系煤炭开采受顶板砂岩水害威胁,分析采掘过程中地下水动态变化,预测其涌水量是防治顶板砂岩水害的重要前提。以泊江海子矿为例,通过对比工作面开采前后不同含水层地下水位、流场分析发现,回采前疏放对白垩系含水层不产生影响,回采后产生一定的影响,反映了采动破坏了二含水层之间隔水层。而依据矿井充水条件及渗透性分析结果,采用修改大井方法对该矿F工作面涌水量进行预测,结果与实际回采较接近,为西部侏罗系砂岩水害类似矿区提供一定参考。Jurassic coal mining in western China is threatened by water damage in the roof sandstone,the dynamic changes of groundwater during the mining process was analyzed,and the surge of water is an important prerequisite for preventing water damage to the roof sandstone.Bojiang Haizi Mine was taken as an example,by comparing the working face before and after the mining of different aquifers groundwater,flow field analysis,found that the drainage before mining had no effect on the Cretaceous aquifer.and after recovery had some impact,reflecting the mining operation destroyed the water separator between the two aquifers.And based on the mine water-filling conditions and permeability analysis results,a modified large shaft method was adopted to predict the mine’s F working surface water surges,the results was closer to the actual recovery,and provided some reference for mines with similar water hazards in the western Jurassic sandstone.

关 键 词：侏罗系含水层 地下水动态 修改大井法 涌水量预计 

分 类 号：TD74[矿业工程—矿井通风与安全]