回采工作面灰岩承压水突水危险性精细化评价研究  

Fine Evaluation of Water Inrush Risk of Limestone Confined Water in Mining Face

作　　者：张敏 ZHANG Min(Dibao Energy Co.,Ltd.of Shanxi,Taiyuan 030000,Shanxi,China)

机构地区：[1]山西地宝能源有限公司,山西太原030000

出　　处：《能源与节能》2022年第8期53-56,共4页Energy and Energy Conservation

摘　　要：太原煤气化(集团)有限责任公司龙泉煤矿4306回采工作面巷道掘进过程中存在灰岩承压水突水危险性,顶板有淋水点。根据以往的水文地质勘探试验资料,在探查4306回采工作面底板太灰岩、奥灰岩含水层水文地质条件的基础上,对其突水危险性进行评价,并提出切实可行的防治水技术措施,为工作面的回采提供更可靠的地质、水文地质依据。根据探测情况,太灰岩含水层富水性不均匀,4306回采工作面整体上富水性弱,已揭露的断层尚未发现导水现象;峰峰组单位涌水量为0.02631~0.17000 L/(s·m),渗透系数为0.0224~0.1600 m/d,富水性为弱-中等;峰峰组加上马家沟组混合单位涌水量为0.01~0.18 L/(s·m),渗透系数为0.017~0.260 m/d,富水性为弱-中等。There is a water inrush risk of limestone confined water in the roadway excavation of 4306 working face of Lomhquan Coal Mine of Taiyuan Coal Gasification(Group)Co.,Ltd.,and there are water drenching points on the roof.Based on the previous hydrogeological exploration and test data and the previous exploration of the hydrogeological conditions of Taiyuan limestone and Ordovician limestone aquifers on the floor of 4306 working face,the water inrush risk was evaluated,and practical technical measures for water prevention and control were put forward,which provides more reliable geological and hydrogeological basis for mining of working face.According to the detection,the water yield of Taihui limestone aquifer is uneven,the water yield of 4306 working face is weak as a whole,and the water diversion phenomenon has not been found in the exposed faults;the unit water inflow of Fengfeng formation is 0.02631-0.17000 L/(s·m),the permeability coefficient is 0.0224-0.1600 m/d,and its water yield property is weak-medium;the unit water inflow of Fengfeng formation and Upper Majiagou Formation is 0.01-0.18 L/(s·m),the permeability coefficient is 0.017-0.260 m/d,and the water yield property is weak-medium.

关 键 词：突水危险性 太灰水 奥灰水 富水性 

分 类 号：TD745[矿业工程—矿井通风与安全]