巨厚含水层采动影响下矿井涌水量预测

发布时间：2018-10-10 10:16

【摘要】：在地下采掘活动的影响下,导水断裂带未能贯穿含水层时,大井法计算的涌水量误差较大。针对这种情况,对复杂地质条件合理概化,建立导水断裂带未能贯穿含水层的水文地质概化模型,对大井法进行改进,将含水层概化为垂直方向上互不影响的两元结构,提出倒置非完整大井法,可以分别计算顶部和侧向的水量,使其更贴近实际情况;并结合相关理论进行推导,得出相应的数学模型。结合彬长矿区亭南矿和胡家河矿2个工作面的现场实测地质资料,应用该方法计算涌水量,并与实际涌水量进行对比,结果较为准确,验证了顶板巨厚基岩含水层采动影响下,倒置非完整大井法计算涌水量的合理性。
[Abstract]:Under the influence of underground mining activities, when the water-conducting fault zone fails to penetrate the aquifer, the error of water inflow calculated by the large well method is large. In view of this situation, the complex geological conditions are reasonably generalized, the hydrogeological generalization model of the water-conducting fault zone which fails to penetrate the aquifer is established, the large-well method is improved, and the aquifer is reduced to a two-element structure which does not affect each other in the vertical direction. The inverted nonholonomic large well method can be used to calculate the water quantity at the top and the side respectively so as to make it more close to the actual situation and the corresponding mathematical model is derived by combining the relevant theory. Combined with the field measured geological data of the two working faces in Jinan Mine and Hujiahe Mine, this method is used to calculate the water inflow and to compare it with the actual water inflow. The results are more accurate, and verify the influence of mining on the roof thick bedrock aquifer. It is reasonable to calculate the inflow of water by inverted incomplete large well method.
【作者单位】：中煤科工集团西安研究院有限公司;陕西省煤矿水害防治技术重点实验室;
【基金】：中煤科工集团西安研究院技术创新面上资助项目(2014MS011)
【分类号】：TD742.1

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