Abstract：Research purposes: There is the big risk in construction of submarine tunnel． If the engineering measures are not correct，the calamitous outcome may happen and even it threatens the successful completion of the construction．The study was done on the key construction technologies for the Kiaochow Bay Submarine Tunnel with Boring and Blast Method for guaranteeing the safe construction of the tunnel．
Research conclusions: By making theoretic analysis，numerical simulation，in － site test and conducting the advanced geological forecast，the deep study was done on the key technologies，including the risk management of construction of submarine tunnel，construction for the fault fracture zone，construction of the shallow crossing large span，construction of rooms with small clear distance，construction of crossing chambers，and rapid construction with boring blast method． The construction risk management information system was set up． The double － channel grouting device and the new technique of the rapid curtain grouting without grouting stop wall for the fracture rock ( fault fracture zone ) were developed． The construction technologies for plane crossing chambers and stereoscopic crossing chambers were optimized and the set complete technology of the boring and blast was summarized for promoting the progress of the Chines technology for construction of submarine tunnel．
Hong Xuanhua． Risk Evaluation and Research for Representative Construction Risk of a Sub － Sea Tunnel Below the Jiaozhouwan ［ D ］． Shanghai: Tongji University，2008．
Xue Yiguo， etc． Practice of Comprehensive Early － warning Geological Prediction on Aquifer Fault in Qingdao Kiaochow Bay Subsea Tunnel ［J］． Chinese Journal of Rock Mechanics and Engineering，2009( 10) : 2081 － 2087．
Zhang Jianbin． Discussion on the Construction Scheme of Jiaozhou Bay Tunnel Crossing Seabed Fault Zone ［J］． Journal of Railway Engineering Society，2008( 5) : 66 － 71．
Zhao Jizeng． Study of Full － face Curtain Grouting on Water － burst Fault F _ ( 4 － 4 ) Subsea Tunnel in Qingdao Jiaozhou Bay ［J］． Journal of Shandong University ( Engineering Science ) ，2009( 6) : 116 － 120．
Xie Zhuoxiong． Study on Stability of Surroungding Rock and Structure Mechanical Behaviours During Adjacent Construction for Twin Tunnels with Small Spacing［D］． Chengdu: Southwest Jiaotong University，2005．
Gu Wenkai，etc． The Construction Technology of the Main Road and the Ramp Interjunction of Right Line in Qingdao Jiaozhouwan Subsea Tunnel ［J］． Engineering Sciences，2009( 7) : 45 － 52．
Huang Shihong． The Study on Construction Technology of the Grout in Qingdao Jiaozhouwan Subsea Tunnel ［J］． Engineering Sciences and Technology，2011( 1) : 5 － 9．
Xie Wenqing． The Study on Complete Construction Technology in Qingdao Jiaozhouwan Subsea Tunnel ［J］． Engineering Sciences and Technology，2011 ( 1) : 18 － 23．
2011, Vol. 28 
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