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MODERN TUNNELLING TECHNOLOGY 2017, Vol. 54 Issue (3) :190-194    DOI:
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Construction Techniques for a Shallow-Buried Tunnel with a Large Section in Hard Rock
(China Railway Second Bureau Engineering Co., Ltd., Chengdu 610092)
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Abstract Based on the construction of the right line of the large-section subsea tunnel at Jiaozhou Bay, a discus? sion was carried out regarding the construction method for the shallow-buried large-section bored tunnel. Based on a study of the recommended designed construction scheme and considering the construction experience and advanced construction concepts both at home and abroad, the safe, rapid and economically successful large-section excavation was made possible by advanced grouting, long anchor bolts, reinforcement of the longitudinal connection and weak blasting, and the technical and organization difficulties were solved in respect to the construction of the shallow-buried bored tunnel with a large-section in hard rock.
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Keywords： Tunnel   Construction technique   Hard rock   Shallow overburden   Large section     
Abstract： Based on the construction of the right line of the large-section subsea tunnel at Jiaozhou Bay, a discus? sion was carried out regarding the construction method for the shallow-buried large-section bored tunnel. Based on a study of the recommended designed construction scheme and considering the construction experience and advanced construction concepts both at home and abroad, the safe, rapid and economically successful large-section excavation was made possible by advanced grouting, long anchor bolts, reinforcement of the longitudinal connection and weak blasting, and the technical and organization difficulties were solved in respect to the construction of the shallow-buried bored tunnel with a large-section in hard rock.
Keywords： Tunnel,   Construction technique,   Hard rock,   Shallow overburden,   Large section     
Cite this article:   
.Construction Techniques for a Shallow-Buried Tunnel with a Large Section in Hard Rock[J]  MODERN TUNNELLING TECHNOLOGY, 2017,V54(3): 190-194
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