| Convergent mechanism of roadway driven along with strong roof of special thick stratum and its controlled measures |
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| 引用本文： | 翟新献 钱鸣高 景国勋 李永明. Convergent mechanism of roadway driven along with strong roof of special thick stratum and its controlled measures[J]. 煤炭学报(英文版), 2004, 10(1): 1-4 |
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| 作者姓名： | 翟新献 钱鸣高 景国勋 李永明 |
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| 作者单位： | [1]CollegeofResourceandSafetyEngineering,ChinaUniversityofMiningandTechnology,Beijing100083,China [2]DepartmentofResourceandMaterialEngineering,JiaozuoInstituteofTechnology,Jiaozuo454000,China |
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| 基金项目： | Supported by Science Technology Research Project of Henan Province (0124150301) |
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| 摘 要： | The trapezoidal cross-section roadway, driven along with its medium and fine grain sandstone roof in special thick stratum, was situated in shale strata. Rock-lining wall was employed in roadway, which its roof is in the free situation. Under the action of virgin stress, the surrounding rock of roadway was in stability. While under the action of fixed abutment pressure arisen from protection pillar of roadway, which its two sides‘s eams were extracted, free strong roof of roadway was in the stability. But its two sides‘ rock-lining walls was fractured, partially broken into pieces, and its floor heave was obvious. The velocity of floor heave is 0.440.8 mm/d. The size of broken zone of surrounding rock of roadway increases doubly. An effective load coefficient of surrounding rock to was quoted illustrate these phenomena. The main reasons of roadway convergence are that, rock property of surrounding rock is inferior, protection pillar affects its stability, and supporting pattern employed is improper. At last, effective measures to control roadway convergence should be bolting and grouting lining, which mainly consolidates surrounding rock of roadway.
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| 关 键 词： | 控制测量 强力顶板 收敛机制 采空区 有效负荷系数 煤矿开采 路面驱动 |
Convergent mechanism of roadway driven along with strong roof of special thick stratum and its controlled measures |
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| ZHAI Xin-xian ,,QIAN Ming-gao ,JING Guo-xun ,LI Yong-ming. Convergent mechanism of roadway driven along with strong roof of special thick stratum and its controlled measures[J]. Journal of Coal Science & Engineering(China), 2004, 10(1): 1-4 |
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| Authors: | ZHAI Xin-xian QIAN Ming-gao JING Guo-xun LI Yong-ming |
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| Affiliation: | College of Resource and Safety Engineering, China University of Mining and Technology, Beijing 100083, China;Department of Resource and Material Engineering, Jiaozuo Institute of Technology, Jiaozuo 454000, China;Department of Resource and Material Engineering, Jiaozuo Institute of Technology, Jiaozuo 454000, China |
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| Abstract: | |
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| Keywords: | strong roof roadway convergence broken zone effective load coefficient |
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