摘要
防止断层水破坏最有效的方法是设置防水煤柱。以往煤柱宽度的计算主要采用经验公式,计算结果与实际相差较大。综合考虑矿压和承压水压力建立了“双压”控制下近断层煤层顶底板突水的水力模型,在考虑断层性质、矿压和承压水压力的基础上,提出了1种计算大型正断层采煤防水煤柱宽度的新方法。将研究成果应用于红旗煤矿五指岭支断层防水煤柱宽度计算,并利用FLAC3D软件进行数值模拟,对开采影响下煤柱宽度的计算进行校核。
The most effective way to prevent the damage of fault water is to set up waterproof coal pillars.However,in the past,the calculation of the width of coal pillars mainly used empirical formulas,and the calculation results differed greatly from the actual.The hydraulic model of water inrush at the roof and floor of coal seam under the control of"double pressure"was established by considering mine pressure and pressurized water pressure.Based on considering the nature of the fault,mine pressure and pressurized water pressure,a new method of calculating the width of waterproof coal pillars for large-scale coal mining in positive fault was proposed.The research results were applied in the calculation of the width of waterproof coal pillars in the Wuzhiling branch fault of Hongqi Coal Mine,and numerical simulation was carried out by using FLAC3D software to check the calculation of coal pillar width under the influence of mining.
作者
冯文文
FENG Wenwen(Shanxi Dibao Energy Co.,Ltd.,Taiyuan 030045,Shanxi,China)
出处
《能源与节能》
2024年第3期292-295,共4页
Energy and Energy Conservation
关键词
华北煤田
近断层采煤
围岩破坏特征
防水煤柱
North China coalfield
near-fault mining
damage characteristics of surrounding rock
waterproof coal pillar
