Research on tunnel bearing structure safety under high geostress
- 10.2991/iceesd-18.2018.142How to use a DOI?
- high geostress; bearing structure; lining; seepage; fracture
The underground water level of diversion tunnel is so high, that the power station in run-time will suffer enormous external hydraulic pressure, especially the marble show time dependent failure phenomenon, and increase the risk in run- time. For this reason, the reinforced concrete lining is adopted, and combine with the primary support and the consolidation grouting to form a composite bearing structure to ensure the stability of surrounding rock. According to the mechanism of lining structure and grouting on the surrounding rock stability, the importance of the composite bearing structure for the long-term stability of tunnel was revealed. By the three- dimensional seepage field analysis to reveal the importance of the relief pressure hole for the lining structure, and the pressure of lining edge is determined. The calculation results show that, in accordance with the existing design scheme, the whole stability of the structure can be guaranteed.
- © 2018, 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/).
Cite this article
TY - CONF AU - Ning Liu AU - Jianlin Chen AU - Weijiang Chu AU - Pingzhi Chen PY - 2018/05 DA - 2018/05 TI - Research on tunnel bearing structure safety under high geostress BT - Proceedings of the 2018 7th International Conference on Energy, Environment and Sustainable Development (ICEESD 2018) PB - Atlantis Press SP - 775 EP - 778 SN - 2352-5401 UR - https://doi.org/10.2991/iceesd-18.2018.142 DO - 10.2991/iceesd-18.2018.142 ID - Liu2018/05 ER -