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吕凤圆, 常富贵, 魏巍, 姜占东, 韩芳军, 杨学琴, 李君, 杨学贵, 马进勇. 非稳定流含水层重构与顶板群孔泄水点判定研究[J]. 矿业安全与环保.
引用本文: 吕凤圆, 常富贵, 魏巍, 姜占东, 韩芳军, 杨学琴, 李君, 杨学贵, 马进勇. 非稳定流含水层重构与顶板群孔泄水点判定研究[J]. 矿业安全与环保.
Lü Fengyuan, Chang Fugui, Wei Wei, Jiang Zhandong, Han Fangjun, Yang Xueqin, Li Jun, Yang Xuegui, Ma Jinyong. Study on reconstruction of unsteady flow aquifer and determination of roof group hole drainage point[J]. Mining Safety & Environmental Protection.
Citation: Lü Fengyuan, Chang Fugui, Wei Wei, Jiang Zhandong, Han Fangjun, Yang Xueqin, Li Jun, Yang Xuegui, Ma Jinyong. Study on reconstruction of unsteady flow aquifer and determination of roof group hole drainage point[J]. Mining Safety & Environmental Protection.

非稳定流含水层重构与顶板群孔泄水点判定研究

Study on reconstruction of unsteady flow aquifer and determination of roof group hole drainage point

  • 摘要: 我国西北地区主采煤层赋存地质与水文地质特征较之浅部矿区差异较大,如何降低矿井突水风险对于煤炭安全开采尤为重要。以石槽村煤矿宝塔山砂岩含水层为工程背景,构建含水层三维可视化模型,通过单、多孔非稳定流模型对模型进行验证,并对顶板泄水点位置反演预估。结果表明:( 1)采区顶板群孔非稳定流模型数据与观测孔放水实测数据拟合性好,模型可信度高;( 2)含水层数值重构最优解为六个分区: Ⅰ高渗中储水区、Ⅱ中渗高储水区、Ⅲ高渗高储水区、Ⅳ低渗中储水区、Ⅴ低渗低储水区、Ⅵ中渗中储水区;( 3)井下泄水点位置在G1-1观测点和F1-3观测点之间,泄水量150m3/d~200m3/d。研究结果对实现含水层顶板的精准泄水,降低矿井突水事故风险具有较好的实际意义。

     

    Abstract: The occurrence geology and hydrogeological characteristics of main coal seam in northwest China are different from those in shallow mining areas, so how to reduce the risk of mine water inrush is particularly important for safe coal mining. Taking Baotashan sandstone aquifer in Shicaocun Coal Mine as the engineering background, a three-dimensional visualization model of the aquifer is constructed, and the model is verified by single and porous unsteady flow models, and the position of the roof drainage point is estimated by inversion. The results show that:(1) The unsteady flow model data of the roof group holes in the mining area have good fit with the measured data of water discharge from the observed holes, and the model has high reliability; (2) The optimal solution of aquifer numerical reconstruction is divided into six zones:Ⅰ high permeability medium water storage zone, Ⅱ medium permeability high water storage zone, Ⅲ high permeability high water storage zone, Ⅳ low permeability medium water storage zone, Ⅴ low permeability low water storage zone, Ⅵ medium permeability medium water storage zone; (3) The water discharge point of the well is located between G1-1 observation point and F1-3 observation point, and the water discharge is 150m3/d~200m3/d. The research results have good practical significance for realizing precise water discharge of aquifer roof and reducing the risk of mine water inrush accident.

     

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