【摘要】 基于某煤矿工程地质条件,运用非线性数值分析软件UDEC,分析了采场走向及倾向采动裂隙演化规律及分布特征,并以岩体综合强度为变量计算了导水裂隙带的高度。分析结果表明:导水裂隙带高度与理论计算相吻合,充分采动条件下,工作面走向裂隙带分布呈"前"高"后"低的类"马鞍型"形态,工作面两端是防治工作面突水的重点。更多还原

【Abstract】 Based on the engineering geology condition of some colliery,the evolution law and the distributing features of mining-induced fissures in overburden rocks along the strike and dip of stope were analysed using nonlinear numerical analysis software UDEC,and the height of the water-conducted fissure zone was calculated by using the comprehensive strength of rock as the variable.The results of analysis showed that the height of water-conducted fissure zone obtained by theoretic calculation is accord with that obtained by numerical analysis,under full mining condition,the fissure zone along the strike of stope is similar with an saddle,which is higher near coalface and lower away from it,and the two roof sides of the coalface are the important place for protecting water inrush.更多还原