厚黄土覆盖层条带开采关键层的数值模拟  

Numerical Simulation of Key Strata about Strip Mining under Thick Loess Layer

作　　者：程东全 尹士献[2] 李德海[2] 

机构地区：[1]河南永华能源有限责任公司,河南堰师456000 [2]河南理工大学,河南焦作454000

出　　处：《矿冶工程》2008年第6期8-10,14,共4页Mining and Metallurgical Engineering

摘　　要：针对采动过程中上覆岩层的破坏特性,在数值模拟中对厚黄土层采用莫尔-库仑准则,对煤岩体采用虎克-布朗准则理论模型,模拟计算雷坡村庄下开采煤层地表移动变形。根据计算结果,利用FLAC3D自定义函数功能,从煤层顶板的岩层逐层向上,编程求取主断面上各岩层的下沉值,利用GRAPHER软件生成直观图形,从直观图形可以判断出主(亚)关键层的层位。In view of the damage property of overburden stratum during mining, simulated calculation was made for the surface movement and deformation while undermining Leipo village coal mine, using Mohr-coulomb criterion for thick loess layer and Hoek-Brown criterion for the coal rock in the numerical simulation（FLAC^3D）. According to the calculation results, the settlement of each stratum along the main section was figured out layer by layer up from the roof stratum, by using FLAC^3D defined function. A visual figure was produced with software of GRAPHER, and primary and inferior key strata can be estimated from the visual figure.

关 键 词：煤层开采 主关键层 亚关键层 数值模拟 计算准则 采动损害 开采沉陷 FLAC^3D 

分 类 号：TD823[矿业工程—煤矿开采]