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MODERN TUNNELLING TECHNOLOGY 2015, Vol. 52 Issue (4) :179-183    DOI:
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Study of Shield Cutterhead Hyperbaric Intervention with Diving in Slurry
(1 Technology Center of CCCC Second Harbor Engineering Co. Ltd., Wuhan 430040; 2 Engineering Equipment Branch of CCCC Second Harbor Engineering Co. Ltd., Wuhan 430014)
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Abstract Currently, for shield construction under complicated geological conditions, hyperbaric intervention is an important way to solve the problems of shield cutters. In this paper, the technology of hyperbaric intervention with diving in slurry is analyzed and studied regarding the problem of excavation face instability and collapse experienced in the process of hyperbaric intervention in the Nanjing Weisan Road river-crossing tunnel N. Face support with slurry pressure under normal excavation conditions and the saturation diving technique are used together to carry out cutter tool replacement, so problems regarding hyperbaric intervention can be solved in cases where supporting the working face with compressed air is impossible.
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Keywords： Slurry shield   Excavation face collapse   Hyperbaric intervention with diving in slurry   Saturation diving     
Abstract： Currently, for shield construction under complicated geological conditions, hyperbaric intervention is an important way to solve the problems of shield cutters. In this paper, the technology of hyperbaric intervention with diving in slurry is analyzed and studied regarding the problem of excavation face instability and collapse experienced in the process of hyperbaric intervention in the Nanjing Weisan Road river-crossing tunnel N. Face support with slurry pressure under normal excavation conditions and the saturation diving technique are used together to carry out cutter tool replacement, so problems regarding hyperbaric intervention can be solved in cases where supporting the working face with compressed air is impossible.
Keywords： Slurry shield,   Excavation face collapse,   Hyperbaric intervention with diving in slurry,   Saturation diving     
Cite this article:   
.Study of Shield Cutterhead Hyperbaric Intervention with Diving in Slurry[J]  MODERN TUNNELLING TECHNOLOGY, 2015,V52(4): 179-183
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http://www.xdsdjs.com/EN/      或     http://www.xdsdjs.com/EN/Y2015/V52/I4/179
　
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