Construction Techniques in Crossing Water-rich Sand Stratum of Deep Buried Large Tunnels

DOI

10.2991/emim-17.2017.158How to use a DOI?

Keywords

Engineering of drawing water from Datong River into huanshui river; Horizontal rotary-jet grouting; Disposal of landslide; Water-rich sand stratum

Abstract

As a subdivision and backbone project of engineering of drawing water from Datong River into Huanshui River, the water transfer for main channel project is designed to transfer water from Datong River to Huangshui River, with the total amount of 3.6ž108m3 in a short-term and 7.5ž108m3 in a long-term. The project scale is large. It is determined to be 2-level for main structure, 3-level for secondary structure and 4-level for temporary structure. The diversion tunnel, which is a non-pressure tunnel to draw water, is 24165.83m in length. The ground elevation of tunnel axis is 2943~4020m, the maximum and mean burial depths are 1100m and about 480m respectively, so that it is a deep and long tunnel, which is constructed with TBM, with 5m for diameter, 2955.6 and 2941.7 respectively for elevation of inlet floor and outlet floor. The designed flow of water diversion is 35m3/s, longitudinal slope is i=0.00054529, and the maximum flow velocity within the tunnel is 2.24 m/s.

Copyright

© 2017, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Chao Li
AU  - Mingzhu Zhang
PY  - 2017/04
DA  - 2017/04
TI  - Construction Techniques in Crossing Water-rich Sand Stratum of Deep Buried Large Tunnels
BT  - Proceedings of the 7th International Conference on Education, Management, Information and Mechanical Engineering (EMIM 2017)
PB  - Atlantis Press
SP  - 791
EP  - 794
SN  - 2352-538X
UR  - https://doi.org/10.2991/emim-17.2017.158
DO  - 10.2991/emim-17.2017.158
ID  - Li2017/04
ER  -