| 厚黄土层条件下综放开采覆岩破坏数值模拟研究 |
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| 引用本文： | 戴华阳,刘继岩,廉旭刚,刘吉波.厚黄土层条件下综放开采覆岩破坏数值模拟研究[J].湖南科技大学学报(自然科学版),2010,25(3). |
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| 作者姓名： | 戴华阳 刘继岩 廉旭刚 刘吉波 |
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| 作者单位： | 1. 中国矿业大学(北京)地球科学与测绘工程学院,北京,100083
2. 中国矿业大学(北京)地球科学与测绘工程学院,北京100083;华晋焦煤有限责任公司王家岭煤矿建设指挥部,山西河津043300 |
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| 摘 要： | 厚黄土层条件下综放开采上覆岩层的破坏有其特殊性.利用离散元方法模拟某工作面开采的岩层移动过程,分析了在厚黄土层作用下岩层的破坏形态和移动轨迹,揭示了覆岩应力、位移随工作面推进的变化趋势.提出了关键层破断前后覆岩破坏的2种结构形态:有拱结构和无拱结构.在2种结构下,厚黄土层对采空区上覆岩层应力和位移变化的影响有着显著差异.研究结果对矿区的安全生产有重要意义.
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| 关 键 词： | 厚黄土层 覆岩破坏规律 关键层 离散元 有拱结构和无拱结构 |
Numerical simulation study on overburden rock damage by fully mechanized caving under thick loess layer |
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| DAI Hua-yang,LIU Ji-yan,LIAN Xu-gang,LIU Ji-bo.Numerical simulation study on overburden rock damage by fully mechanized caving under thick loess layer[J].Journal of Hunan University of Science & Technology(Natural Science Editon),2010,25(3). |
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| Authors: | DAI Hua-yang LIU Ji-yan LIAN Xu-gang LIU Ji-bo |
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| Institution: | DAI Hua-yang1,LIU Ji-yan1,2,LIAN Xu-gang1,LIU Ji-bo1(1.College of Geoscience and Surveying Engineering,China University of Mining and Technology,Beijing 100083,China,2.Construction Headquarters of Wangjialing Colliery,Huajin Coking Coal Co.Ltd,Hejin 043300,China) |
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| Abstract: | The damage of overburden rock has specificity by fully mechanized caving under thick loess layer.Damage morphology and movement track of strata under thick loess layer were analyzed by discrete element numerical simulating mining of a panel.The rules of stress and displacement with the panel advancing were revealed.Two structures of strata damage i.e.arch structures and archless structures were put forward.Two structures of stress and displacement of strata were apparently different.The results have an impo... |
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| Keywords: | thick loess layer laws of overburden rock damage key layer discrete element arch structure and archless structure |
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