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Edition and Publication:
< Natural Gas and Oil > Editorial Department
Hosted by:
China Petroleum Engineering & Construction Corporation Southwest Company
Authorized by:
China Petroleum Engineering & Construction Corporation
Co-hosted by:
Overseas Research Center of Research Institute of Petroleum Exploration and Development
Editor in Chief:
Du Tonglin
Vice Editor in Chief:
Tang Xiaoyong,Pu Liming
Address:
No.6, Shenghua Road, High-tech District, Chengdu, Sichuan, China
Postal Code:
610041
Tel:
028-86014709
028-86014500
Email:
cnpc-ngo@cnpc.com.cn
Issue:ISSN 1006-5539
CN 51-1183/TE

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Discussion on Difficult Points in Design and Construction of East River underwater Drilling and Blasting Tunnel

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Key Words： Underwater drilling and blasting tunnel； Buried depth； Integrated and look-ahead geological forecast； Monitor and measurement

Abstract： In order to reduce risks of underwater drilling and blasting tunnel in pipeline construction project as far as possible， it is necessary to summarize successful experience， difficulties and key issues in underwater drilling and blasting tunnel construction projects completed already. Introduced are considerations in safe and effective burial depth design of underwater drilling and blasting tunnel and reasonable， safe and economical burial depth of the East River underwater drilling and blast tunnel. Crossing mode of the East River underwater tunnel is determined according to geological conditions of the East River cross project. Deeply discussed are such key issues as integrated and look-ahead geological forecast， waterproof， monitor and measurement， construction safety and risk management in underwater drilling and blasting tunnel design. Through analysis， proposed are relative technical measures for solving key or difficult problems during design stage and preventing or avoiding landslide， water and mud gushing and other geological disasters occurring probably in construction process，which have important reference values for engineering design and construction of similar projects in China.