摘要
提出了采空区上覆岩层下沉、裂隙、冒落3带的界定方法,并通过FLAC软件对沙曲矿14201工作面进行了开挖模拟,将发生拉伸屈服区域的上限定为裂隙带的上限,将裂隙带下部的位移突变位置作为裂隙带的下限。最后通过瓦斯抽放效果进行验证,结果证明3带划分合理有效,这对其他工作面的抽放通道布置有指导意义。
This paper puts forward the method to divide subsiding, fracturing and caving zones in the strata zones overlying the goaf, and utilizes the FLAC software to simulate the excavation in the 14201 coal face of Shaqu coal mine, specifies the upper bound of the tensile - yield zone as the upper bound of the fracturing zone, while specifying the level of displacement mutation at the bottom of the fracturing zone as the low bound of the fracture zone. Finally the paper validates this boundary by the effect of corresponding methane drainage, the result indicates the guideline is rational and useful. This method can be used to lay out the drainage pathway in other coal faces.
出处
《矿业研究与开发》
CAS
北大核心
2006年第1期20-21,43,共3页
Mining Research and Development
关键词
裂隙带
FLAC
数值模拟
瓦斯抽放
Fracturing Zone, Shaqu coal mine, FLAC, Numerical simulation, Methane drainage
