| 厚黄土覆盖层条带开采关键层的数值模拟 |
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| 引用本文： | 程东全,尹士献,李德海.厚黄土覆盖层条带开采关键层的数值模拟[J].矿冶工程,2008,28(6):8-10. |
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| 作者姓名： | 程东全 尹士献 李德海 |
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| 作者单位： | 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 |
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| 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。
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| 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 FLAC3D |
| 收稿时间： | 2008-06-16 |
Numerical Simulation of Key Strata about Strip Mining under Thick Loess Layer |
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| CHENG Dong-quan,YIN Shi-xian,LI De-hai.Numerical Simulation of Key Strata about Strip Mining under Thick Loess Layer[J].Mining and Metallurgical Engineering,2008,28(6):8-10. |
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| Authors: | CHENG Dong-quan YIN Shi-xian LI De-hai |
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| Affiliation: | 1. YongHua Energy Co Ltd, Yanshi 456000, Henan, China;
2. Henan Polytechnic University, Jiaozuo 454003, Henan, China |
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| Abstract: | 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(FLAC3D).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 FLAC3D defined function.A visual figure was p... |
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| Keywords: | FLAC3D |
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