基于矿井突水反演计算水文地质参数方法研究

发布时间：2018-04-14 02:07

本文选题：矿井突水 + 水文地质参数　；参考：《煤炭科学技术》2015年05期

【摘要】：为了准确分析矿井突水原因并进行水文地质条件研究,将矿井突水事故视为井下放水试验。通过综合利用水文地质钻探、物探及矿井水文监测系统等手段,提出了一种地下水原始流场恢复技术,并利用此技术还原了柠条塔煤矿2-2煤上覆直罗组风化基岩含水层地下水初始流场状态,并利用矿井突水监测数据反演计算出该含水层的水文地质参数。通过2个地面钻孔抽水试验获取的含水层渗透系数分别为2.13、2.15 m/d,而利用突水反演计算的含水层渗透系数为6.88 m/d;2个地面钻孔抽水试验获取的影响半径分别是106、89 m,而利用突水反演计算的影响半径为1 941 m。结果表明,利用地面抽水试验获取的水文地质参数较利用突水反演计算的水文地质参数明显偏小。
[Abstract]:In order to accurately analyze the causes of mine water inrush and study the hydrogeological conditions, the mine water inrush accident is regarded as the underground water discharge test.By means of comprehensive utilization of hydrogeological drilling, geophysical exploration and mine hydrological monitoring system, a technique for restoring the original flow field of groundwater is put forward.By using this technique, the initial flow field of groundwater in the weathered bedrock aquifer of Ziluo formation overlying 2-2 coal in Caragana coal mine was reduced, and the hydrogeological parameters of the aquifer were calculated by inversion of the monitoring data of mine water inrush.The aquifer permeability coefficient obtained by two surface borehole pumping tests is 2.13 ~ 2.15 m / d, while the aquifer permeability coefficient calculated by water inrush inversion is 6.88 m / d, and the influence radius obtained by two surface borehole pumping tests is 106 ~ 89 m, respectively.The influence radius calculated by water inrush inversion is 1 941 m.The results show that the hydrogeological parameters obtained by surface pumping test are obviously smaller than those calculated by water inrush inversion.
【作者单位】：中国煤炭科工集团西安研究院有限公司;
【基金】：中国煤炭科工集团西安研究院有限公司基金资助项目(2014ZD014)
【分类号】：TD745;TD163.1

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