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MODERN TUNNELLING TECHNOLOGY 2014, Vol. 51 Issue (1) :192-198    DOI:
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A Study of Controlled Blasting Techniques for the Multi-Arch Songjiawan Tunne
(1 School of Civil Engineering, Wuhan University, Wuhan 430072; 2 College of Science, Wuhan University of Science and Technology, Wuhan 430065; 3 Construction Headquarters of Shiyan-Baihe Expressway, Shiyan 442000)
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Abstract  The geological conditions encountered during construction of the multi-arch Songjiawan tunnel on theShiyan-Baihe expressway were very complex, and such problems as overbreak, underbreak, an irregular tunnel profile, and cracks on the mid-partition presented themselves during blasting. According to the different surrounding rock classifications, the controlled blasting technique was adopted for this tunnel and the excavation method, blasting parameters, charging structure and priming circuit were optimized to decrease the blasting vibration and improve blasting effects.
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Articles by authors
CAI Lu-Jun-1
2
MA Jian-Jun-2
Zhu-Yi-Wen-1
Zhou-Da-Hua-3
Liu
SONG 3
Hu-Wu-Zhou-3
Keywords： Multi-arch tunnel   Controlled blasting   Monitoring of blasting vibration     
Abstract： The geological conditions encountered during construction of the multi-arch Songjiawan tunnel on theShiyan-Baihe expressway were very complex, and such problems as overbreak, underbreak, an irregular tunnel profile, and cracks on the mid-partition presented themselves during blasting. According to the different surrounding rock classifications, the controlled blasting technique was adopted for this tunnel and the excavation method, blasting parameters, charging structure and priming circuit were optimized to decrease the blasting vibration and improve blasting effects.
Keywords： Multi-arch tunnel,   Controlled blasting,   Monitoring of blasting vibration     
published: 2013-06-13
Cite this article:   
CAI Lu-Jun-1, 2 , MA Jian-Jun-2 etc .A Study of Controlled Blasting Techniques for the Multi-Arch Songjiawan Tunne [J]  MODERN TUNNELLING TECHNOLOGY, 2014,V51(1): 192-198
URL:  
http://www.xdsdjs.com/EN/      或     http://www.xdsdjs.com/EN/Y2014/V51/I1/192
　
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