金源里矿井充水因素分析及矿井水防治研究

发布时间：2018-04-22 16:49

本文选题：金源里井田 + 含水层　；参考：《辽宁工程技术大学》2014年硕士论文

【摘要】：针对金源里井田一采区计划开采煤层水平标高为+680m,而井田煤系风化带孔隙一裂隙含水层底板标高在+780～+820m之间,因开采所形成的垮落带、裂隙带可能波及煤系风化带孔隙一裂隙含水层,同时在主副斜井井筒掘进过程中,出现过矿井涌水量突变的现象,因此,矿井开采存在水害威胁。为了有效防止突水事故的发生,开展了矿井充水因素分析及矿井水防治研究。在收集井田钻孔、地质和水文地质资料的基础上,通过主副斜井掘进所揭露的岩性及涌水量的变化规律,确定了井田含水层类型及可能存在的充水通道,采用“大井”法、Q-S曲线法及富水系数法合理预测矿井涌水量,并提出相应的矿井水防治措施。得出井田含水层为基岩裂隙潜水含水层、基岩孔隙弱承压含水岩组、基岩(煤层)裂隙强承压含水层和基岩(煤层)裂隙弱承压含水层四种类型；充水水源主要有大气降水和地下水；充水通道为风化裂隙、采动冒落和封闭不良的钻孔；一采区矿井正常涌水量为497.4m~3/h,最大涌水量为585m~3/h；应采用留设防水煤岩柱、填埋压实、井下预先钻孔疏水等措施,对矿井水进行防治。
[Abstract]:The horizontal elevation of coal seam in the first mining area of Jinyuanli mine field is 680m, while the floor elevation of pore-fissure aquifer in weathering zone of coal measure is between 780m and 820m. The fracture zone may spread to the pore-fissure aquifer in the weathering zone of coal measures, and at the same time, during the excavation of the main and auxiliary inclined shaft, there has been a sudden change of mine water inflow, therefore, there is a threat of water hazard in mine mining. In order to prevent the occurrence of water inrush, the factors of mine water filling and the prevention and treatment of mine water were studied. On the basis of collecting data of borehole, geology and hydrogeology in the mine field, the types of aquifer and the possible water filling channels are determined through the variation of lithology and water inflow revealed by the excavation of the main and auxiliary inclined wells. The Q-S curve method of "large well" method and the method of water enrichment coefficient are used to reasonably predict the mine water inflow, and the corresponding measures for mine water prevention and control are put forward. It is concluded that the aquifer in the mine field is a bedrock fissure aquifer, the bedrock pore is weakly confined water-bearing rock group, the bedrock (coal seam) fissure aquifer is strong and the bedrock (coal seam) fissure aquifer is weakly confined aquifer. The main water sources for water filling are precipitation and groundwater; the water filling channels are weathered fissures, mining caving holes and poorly closed boreholes; the normal inflow of water in the first mining area is 497.4 mm2 / h and the maximum discharge is 585 mm3 / h; the waterproof coal and rock pillars should be set up to fill in and compacted. In order to prevent and cure mine water, some measures such as borehole drainage and so on are taken to prevent and cure mine water.
【学位授予单位】：辽宁工程技术大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TD745;P641.4

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