Dynamic evolution of the fractures and hydraulic pressures in water-resistant strata between karst cavity and tunnel based on discrete element method

DOI

10.2991/ifeesm-17.2018.2How to use a DOI?

Keywords

karst tunnel; large-scale karst cavity; water-inrush; discrete element method

Abstract

Based on the discrete element software (UDEC), the variation laws of the seepage field and displacement field in water-resistant strata between karst cavity with high-pressuried water and tunnel are simulated and analyzed in thin limestone strata. The results show that under the same karst water pressure, when the thickness of water-resistant strata is 2m, the water-resistant strata is in the whole collapse tendency and the water-inrush channels are formed in a short time, but when the thickness of water-resistant strata is 4m, the rock mass in the 1m range above the tunnel vault is slumped to form a collapse arch, which is less prone to water-inrush.

Copyright

© 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/).

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TY  - CONF
AU  - Zhenyu He
AU  - Jiaqi Guo
AU  - Fan Chen
PY  - 2018/02
DA  - 2018/02
TI  - Dynamic evolution of the fractures and hydraulic pressures in water-resistant strata between karst cavity and tunnel based on discrete element method
BT  - Proceedings of the 2017 3rd International Forum on Energy, Environment Science and Materials (IFEESM 2017)
PB  - Atlantis Press
SP  - 7
EP  - 10
SN  - 2352-5401
UR  - https://doi.org/10.2991/ifeesm-17.2018.2
DO  - 10.2991/ifeesm-17.2018.2
ID  - He2018/02
ER  -