DOI: 10.11799/ce202411018
Prediction of fracture seepage and dynamic water inrush in near vertical coal seams
MENG Zhuanghan
LIU Xiaoping
WANG Yutao
TIAN Yanzhe
ZHAO Yiyan
Abstract：According to the occurrence conditions of near vertical coal seam,a hydrogeological model was established by combining theoretical analysis,numerical simulation and engineering verification,and a calculation method of dynamic water inflow with multiple water gushing sources was proposed as the near vertical coal seam development method was converted from open pit mining to underground mining.The results indicate that the continuous replenishment of loose deposits in open pit cannot be ignored when the open pit switches to underground mining.The shallow mining recharge characteristics of"pit water filling-infiltration recharge-water filling-recharge"and the deep mining recharge characteristics of"combination of bedrock aquifer reserve release and vertical open pit water recharge"were defined.Taking Xianfeng Coal Mine in Qinghai Province as an example,the dynamic calculation of mine water inflow was carried out,and the comparison with the measured results proved that the method is feasible.
Keywords：near vertical coal seamtransformation from open-pit to underground miningmine water inflowdynamic calculationnumerical simulation
Publication Date：2024-11-20
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：8( 118-125 )