| 下保护层开采对上覆煤巷的动态影响及控制研究 |
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| 引用本文： | 涂敏,张向阳,张华磊.下保护层开采对上覆煤巷的动态影响及控制研究[J].采矿与安全工程学报,2008,25(4). |
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| 作者姓名： | 涂敏 张向阳 张华磊 |
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| 作者单位： | 1. 安徽理工大学能源与安全学院,煤矿安全高效开采省部共建教育部重点实验室,安徽,淮南,232001
2. 中国矿业大学理学院,江苏,徐州,221116 |
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| 基金项目： | 安徽省自然科学基金项目，煤炭资源与安全开采周家重点实验室开放基金项目 |
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| 摘 要： | 为了解决下保护层开采对上覆煤层巷道围岩变形的影响,采用注浆加固巷道围岩是一种可行的方法.在力学分析的基础上,得出了基本顶的挠曲量与巷道围岩支护阻力之间的关系,支护阻力减小时,基本顸弯曲下沉挠度增加;当围岩比较破碎时,注浆加固巷道围岩是防治其变形的有效措施,并在现场进行了破碎煤体注浆加固试验.研究结果表明,通过对受采动影响煤体的注浆加固有效地控制了上覆煤层巷道围岩的变形.
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| 关 键 词： | 保护层开采 上覆煤巷 力学分析 围岩控制 |
Dynamic Effect on Overlying Coal Entry in Using Lower Protective Seam Mining and Its Controlling Measures |
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| TU Min,ZHANG Xiang-yang,ZHANG Hua-lei.Dynamic Effect on Overlying Coal Entry in Using Lower Protective Seam Mining and Its Controlling Measures[J].Journal of Mining and Safety Engineering,2008,25(4). |
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| Authors: | TU Min ZHANG Xiang-yang ZHANG Hua-lei |
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| Affiliation: | 1.School of Mining and Safety;The Key Laboratory of Safe and High-Efficiency Mining of Ministryof Education;Anhui University of Science and Technology;Huainan;Anhui 232001;China;2.College of Science;China University of Mining & Technology;Xuzhou;Jiangsu 221116;China |
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| Abstract: | In solving the problem of deformation in surrounding rocks of the overlying coal entry caused by upper protective seam mining,reinforcing the surrounding rocks by grouting is a feasible method.From the mechanics analysis,we obtained the relationship between the deflection of main roof and support resistance of surrounding rocks: the deflection of the main roof increases with the decrease of support resistance.So,when the surrounding rock is crushed,the reinforcement by grouting is very effective to prevent ... |
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| Keywords: | protective seam mining overlying entry mechanics analysis surrounding rock control |
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