摘要
Abstract
The Xi-Er, Kashi–Shuang and Shuang–San tunnelsof the 2nd stage water transfer project in the northern areas of Xinjiang Uygur Autonomous Region are totally516.19km in length, and they are designed to be constructed section by section using 18TBMs.Among which, the Kashi–Shuang tunnel, with a single tunnel 283.27 km inlength, is currently the longest watertransfer one to be constructed in the world.It ischaracterized by deep burial, super length and group construction of TBM. Based on the geological features and conditions of the research areas as well as large quantity of geological surveys and test data, the main engineering geological problems in deep-buried and super-long tunnels are investigated, and the combined construction scheme of TBM and drilling-blastingmethod is proposed. The highlights,difficulties and key techniques in the construction of the project are preliminarily analyzed and discussed, including sub-tunnelconstruction of deep-buried tunnel andselection and layout of TBM-entering tunnel patterns, section-by-section construction of super-long tunnel andoptimization of TBM tunneling schemes, groupconstruction of TBM and high-efficient operation and management of the auxiliary system, forecast of geological disasters and prevention and control of risks, anddeformationcontrol of soft rock and safe tunneling in fault zones.It may provide technical support for the design and manufacturing of TBM and theconstruction of large interregional water diversion and long water transfer projects.关键词
输水隧洞/工程地质/TBM掘进/关键技术Key words
water transfer tunnel/engineering geology/TBMtunneling/key technique分类
建筑与水利
