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| 综放条件下垮落直接顶“两带”分布高度研究 | |
| 引用本文： | 顾秀根,王家臣,李红涛,刘玉德.综放条件下垮落直接顶“两带”分布高度研究[J].中国安全生产科学技术,2010,6(2):113-117. |
| 作者姓名： | 顾秀根 王家臣 李红涛 刘玉德 |
| 作者单位： | 1. 中国矿业大学(北京)资源与安全工程学院,北京,100083;华北科技学院,安全工程学院,北京,101601 2. 中国矿业大学(北京)资源与安全工程学院,北京,100083 3. 华北科技学院,安全工程学院,北京,101601 |
| 摘 要： | 通过相似模拟实验和理论分析,对直接顶不规则垮落和规则垮落两带分布形成的原因及其分布高度进行了深入的分析研究。研究认为,在综放条件下,散体状态的直接顶在渐进流动过程中的某一时刻形成的＂散体拱＂结构构成了不规则垮落带和规则垮落带的分界线,是垮落直接顶呈＂两带＂分布的原因。不规则垮落带分布的研究是＂两带＂分布研究的关键,其分布的高度取决于拱的高度和煤层厚度,其中拱的高度又是重要影响因素。文章对垮落直接顶＂两带＂分布高度的研究,对于深化综放采场煤岩流动规律的研究具有重要意义。 |
| 关 键 词： | 不规则垮落带 规则垮落带 散体拱 拱高 跨度 |
Study on "Two Zones" distribution height of caving immediate roof in top coal caving |
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| GU Xiu-gen,WANG Jia-chen,LI Hong-tao,LIU Yu-de.Study on "Two Zones" distribution height of caving immediate roof in top coal caving[J].Journal of Safety Science and Technology,2010,6(2):113-117. | |
| Authors: | GU Xiu-gen WANG Jia-chen LI Hong-tao LIU Yu-de |
| Institution: | 1.Faculty of Resources and Safety Engineering/a>;CUMTB/a>;Beijing 100083/a>;China;2.College of Safety Engineering/a>;North China University of Science and Technology/a>;Beijing 101601/a>;China |
| Abstract: | Simulation testing and theoretical analyses are made to deeply analyze and study generating reason of Two zones distribution on irregularity caving and regularity caving of immediate roof and their distribution height.Study shows granular arch structure which is generated as caving rocks of immediate roof in granular state in top coal caving move progressively,is boundary between irregularity caving zone and regularity caving zone.,and is the reason immediate roof appearing Two zone distribution.Study on Tw... |
| Keywords: | irregularity caving zone regularity caving zone granular arch arch height span |
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