| 沿空留巷围岩结构灾变系统及控制力学模型研究 |
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| 引用本文： | 文志杰,蒋宇静,宋振骐,汤建泉.沿空留巷围岩结构灾变系统及控制力学模型研究[J].湖南科技大学学报(自然科学版),2011(3). |
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| 作者姓名： | 文志杰 蒋宇静 宋振骐 汤建泉 |
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| 作者单位： | 山东科技大学矿山灾害预防与控制重点实验室;长崎大学土木工程系; |
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| 基金项目： | 国家自然科学基金项目(5087402151074101); 教育部科技创新团队支持计划(IRT0843); 《科技导报》博士生创新资助计划(kjdb200902-13) |
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| 摘 要： | 运用实用矿山压力控制理论建立了沿空留巷开采灾害系统模型,提出了无煤柱沿空留巷大、小结构理论,修正了内应力场范围计算方法,建立了给定变形、限定变形2种留巷结构力学模型.研究表明:沿空留巷巷道围岩大结构是指应力拱内岩梁,小结构是指巷旁充填体、顶煤、煤帮、直接顶、底板等锚固结构,二者力源来源于应力拱内岩层,其中巷旁充填体力源为裂断拱内裂断岩梁,煤帮力源来源于应力拱内岩梁作用;内应力场范围是传统范围求解的1.4倍;沿空留巷限定变形状态承载体承担起大结构内覆岩运动产生的作用载荷,对巷道进行支承保护作用;给定变形状态承载体(护巷煤柱或充填体)不承担大结构内覆岩运动产生的作用载荷,仅承担支承范围内直接顶载荷,并对巷道进行密封保护、隔绝采空区作用.
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| 关 键 词： | 沿空留巷 应力拱 力学模型 给定变形 限定变形 |
Study on mechanical model and surrounding rock catastrophe system of Gob-side retaining entry |
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| WEN Zhi-jie,JIANG Yu-jing,SONG Zhen-qi,TANG Jian-quan.Study on mechanical model and surrounding rock catastrophe system of Gob-side retaining entry[J].Journal of Hunan University of Science & Technology(Natural Science Editon),2011(3). |
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| Authors: | WEN Zhi-jie JIANG Yu-jing SONG Zhen-qi TANG Jian-quan |
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| Institution: | WEN Zhi-jie1,JIANG Yu-jing1,2,SONG Zhen-qi1,TANG Jian-quan1(1.Key Laboratory of Mine Disaster Prevention and Control,Shandong University of Science and Technology,Qingdao 266510,China,2.Department of Civil Engineering,Nagasaki University,Nagasaki 852-8521,Japan) |
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| Abstract: | Based on the Practical mine ground pressure control theory,catastrophe system of gob-side retaining entry was developed,big-small structure model theory was presented,the calculation method of inner stress field range was revised,two kinds of structure model which are limited deformation and preset deformation were built.The results show that the big structure of surrounding rock is related to strata which lie in stress arch,small structure of surrounding rock is related to anchored structure including back... |
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| Keywords: | gob-side retaining entry stress arch mechanical model preset deformation limited deformation |
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