逆断层区构造煤形成机制及分布规律的数值模拟  

Numerical simulation of formation mechanism and distribution regularities of structural coal in thrust faults

作　　者：徐学锋[1] 

机构地区：[1]河南理工大学能源科学与工程学院,河南焦作454000

出　　处：《煤田地质与勘探》2012年第2期6-8,共3页Coal Geology & Exploration

基　　金：国家重大基础研究发展计划(973计划)项目(2005CB221501);国家自然科学基金项目(51104055)

摘　　要：采用FLAC2D数值模拟分析软件,通过流变模型和摩尔库仑弹塑性模型转换技术,研究了在水平构造应力作用下,逆断层运动过程中断层区域塑性破坏区的分布及变化规律,进而揭示了逆断层区构造煤的形成机制和分布规律。结果表明,逆断层区域的塑性破坏区域在距离断层一定范围内分布,随着远离断层而减小,且断层上盘构造煤的发育程度和范围大于下盘。研究成果可为断层区域煤与瓦斯突出防治提供借鉴。In the paper, the softwares of FLAC2D and Creep model to Mohr-Coulomb model conversion technol- ogy are applied to study the distribution and change regularities of plastic failure zone in thrust faults movements caused by horizontal stress, and the formation mechanism and distribution regularities of structural coal in thrust faults are also studied. The research results show that the plastic zone distributes in the coal seam in a certain dis- tance to the fault, and the plastic zone decreases with distance, and the development degree and scope of structural coal in the hanging wall is larger than the footwall. The research conclusions provide a useful reference for the prevention and control of coal and gas outburst.

关 键 词：逆断层 构造煤 数值模拟 

分 类 号：P618[天文地球—矿床学]