The attenuation law of water inflow from boreholes can provide an effective control method for coal mine water loss disasters.In order to ensure the safety production of coal mines,a numerical simulation analysis of the attenuation law of water inflow from boreholes for advanced drainage of water in underground aquifers of coal mines is proposed.Taking Q coal mine as the research object,combined with SEEP/W software to accurately simulate and analyze the variation law of drilling water inflow,a numerical simulation model of water inflow attenuation law was constructed to achieve numerical simulation of drilling water inflow attenuation law.The results show that as the initial head and permeability coefficient increase,the peak water inflow and quasi stable water inflow of the borehole also increase.The increase in elastic water content will lead to an increase in the peak water inflow of the borehole,while the seemingly stable water inflow remains stable.As the borehole diameter,elevation angle,and slope length increase,the peak water inflow and quasi stable water inflow of the borehole gradually increase.After increasing the number and coverage of boreholes,the water inflow attenuation of individual boreholes and drilling areas is significant.The boreholes located in the center of the drilling area are most affected by the interference of group boreholes in terms of drainage capacity.
关键词
超前疏放水/数值模拟/衰减规律/涌水量/井下含水层/钻孔
Key words
advance drainage of water/numerical simulation/attenuation law/water inflow/underground aquifer/drilling
维普
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