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

LYU Fengyuan; CHANG Fugui; WEI Wei; JIANG Zhandong; HAN Fangjun; YANG Xueqin; LI Jun; YANG Xuegui; MA Jinyong

doi:10.19835/j.issn.1008-4495.20230488

Mining Safety & Environmental Protection > 2024 > 51(5): 46-51, 60. > DOI: 10.19835/j.issn.1008-4495.20230488

LYU 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, 2024, 51(5): 46-51, 60. DOI: 10.19835/j.issn.1008-4495.20230488

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

Shicaocun Coal Mine, State Energy Group Ningxia Coal Industry Co., Ltd., Lingwu 751400, China

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Received Date: June 11, 2023
Revised Date: July 23, 2023

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Abstract

Abstract

Taking Baotashan sandstone aquifer in Shicaocun Coal Mine as the engineering background, a three-dimensional visualization model of the aquifer is constructed, and the visualization model is validated by single and porous unsteady flow models. The position of the roof drainage point is estimated by invert calculation. The results show that: the unsteady flow model data of the roof group holes in the mining area agree well with the measured water discharge from the observed holes, the model has high reliability; the optimal solution of aquifer numerical reconstruction can be divided into six zones, it is 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; the water drainage point of the well is located between G1-1 and F1-3 observation point, and the water drainage is 150 m ³/d to 200 m ³/d.
- aquifer,
- unsteady flow reconstruction,
- roof group hole,
- deiermination of drainage point,
- water control,
- numerical simulation

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