煤层顶板断裂的网络特征及分形几何分析

煤矿断层构造对开采条件、瓦斯突出、矿井突水等均有显著影响.根据勘探和开采资料,分析口孜东井田13-1#煤小断层的发育特征;依据分形几何理论和相似维求测原理,对13-1#煤层顶板构造进行分形研究.结果表明：该煤层顶板小断层多分布于大断层两侧;走向以NE向和近NS向为主,断层倾角较大,多为60° ～70°,且变化较小;依据分维值,煤层顸板断裂构造划分为复杂区、中等区、简单区三种类型,构造复杂区多位于大断层两侧附近,简单区多处于距大断层较远的区域.该研究对煤层开采具有一定的借鉴意义.

Analysis of network characteristics and fractal geometry about coal seam fracture

Aimed at an exposure to fault structures in coal mines with a significant impact on mining conditions,gas outburst,and mine water inrush,this paper give an analysis of the development characteristics of little faults in 13-1# coal roof,based on geological exploration and mining data,and a fractal research on 13-1# coal roof fracture network depending on the fractal geometry theory and similar dimension measuring principle.The result shows that little faults are usually located on the sides of big fault,dominated by the direction of NE and NS,with a big dip angle,generally in the range of 60 ° and 70 ° ;the fractal dimensions as the basic eigenvalue allow fault structures on the coal roof to be divided into three types,such as complex fault structure located on the side of big fault,medium one,and simple one far away from the big fault.The research has certain instructive meaning in coal mine production.