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| Geological Characteristics and Tunnel Engineering in Dali-Lijiang Railway |
| YANG Ying |
| The Second Survey and Design Institute of China Railway, Chengdu, Sichuan 610031, China |
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Abstract Research purposes: Geological condition is very complex in Dali-Lijiang railway including geological disaster strong earthquake. By studying methods or measures of engineering constructing and processing in Dali-Lijiang railway, many experiences are accumulated to construct extending Yunnan, Tibet railway in future.
Research methods: In the paper it is introduced that the engineering geological characteristics about stratum, geological structure, unfavorable geological condition, special soil and rock and environment in Dali-Lijiang railway. Based on different geological condition, this paper also briefly puts forward the corresponding methods or measures of engineering constructing and processing.
Research results: According to the geological characteristics of karst, landslide, dislocation, debris flow, bedding, soft soil and swelling soil, etc. the effective treatment measures has been put forward correspondingly for subgrade, bridge and tunnel works.
Research conclusions: Such consolidation methods as grouting consolidation, anti-slide pile, crushed stone pile and mixing pile are adopted for subgrade; such methods as pile foundation, replacement and strengthening of foundation rigidity are adopted for bridge; such support methods as big and small pipe roof advance support, steel frame and systematic rockbolt support are adopted for tunnel. These support measures form a complete set of support system, and these measures are proved reasonable and feasible in the construction excavation.
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Received: 12 October 2006
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| [1] |
TB 10003-2005,铁路隧道设计规范[S].
|
| [3] |
TB 10027-2001,铁路工程不良地质勘察规程[S].
|
| [2] |
铁道第一勘察设计院.铁路工程地质手册[K].北京:中国铁道出版社,1999.
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2006, Vol. 23 
