朱仙庄矿断裂分形研究及其对瓦斯赋存的控制

在系统分析断裂构造的基础上,应用分形理论与方法,采用盆维数法对朱仙庄煤矿断裂网络进行复杂程度评价。评价结果表明:矿井断裂构造总体偏于复杂,分维值大于1.2的复杂单元约占总数的66.7%,研究区东南部和中偏北部构造偏于简单。通过对分维值与断裂构造的对比研究,认为分维值是评价朱仙庄矿断裂网络复杂程度较为可靠的指标,8煤层瓦斯含量以F10断裂为界呈现北低南高的趋势,与分维值耦合较好,表明分维值可作为矿井瓦斯突出预测的指标之一。

Faulted Structural Complexity Evaluation and Its Gas Hosting Controlling in Zhuxianzhuang Coalmine

Based on faulted structural system analysis, the fractal theory and box counting method are used to evaluate faulted structural complexity in the Zhuxianzhuang coalmine. The result shows that faulted structures in the coalmine are inclined to complex on the whole; the complex units with fractal dimension over 1.2 accounts for about 66.7% in total, only in southeast and northern middle parts of the coalmine are inclined to simple. Through comparative study of the fractal dimension and actual faulted structures, has demonstrated that fractal dimension is a reliable index to identify faulted structural complexity in Zhuxianzhuang coalmine. To take the Fi0 fault as a boundary, the gas content of the No.8 coal seam presents a tendency of low in north and high in south which coupled with fractal dimensions better, so that fractal dimension can be one of coalmine gas burst prediction indices.