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| The Concept and its Application of Reinforced-Crust Support Structure in Very Soft Rock Roadway |
| Wang Zai-quan1, Zhang Hai-ying2, Zhang Li-ming1 |
| (1 Qingdao Institute of Architecture and Engineering, Qingdao 266033, China) (2 Longkou Mineral Bureau, Longkou 265700, China) |
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Abstract According to the analysis of the pressure observation and deformation curves of different support types in very soft rock roadway, it can be obtained that the increase of bolt length deteriorates the support effect, and that grouting effect in surrounding rocks whose range is far smaller than broken zone is no less than that in large range . Therefore, based on theory, numerical simulation and in-situ practice, the concept of the reinforced -crust support structure, support mechanism, characteristics, requirement and several types are brought out by increasing support strength, reducing support range and choosing suitable time.
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Received: 31 March 2003
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1 薛忠臻、张海荧.强壳体支护与锚杆参数选择[J].煤矿支护,2002,2:1～3
2 刘特洪、林天健.软岩工程设计理论与施工实践[M].北京:中国建筑工业出版社,2001
3 刘长武、褚秀生.软岩巷道锚注加固原理与应用[M].徐州:中国矿业大学出版社,2000
4 李明远、王连国等.软岩巷道锚注支护理论与实践[M].北京:,煤炭工业出版社,2001
5 何满潮，景海河，孙晓明.软岩工程力学[M].北京:科学出版社,2002
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2003, Vol. 22 
