Author:
Jing Shao Dong,Xu Shuai Ling,Wang Chao Guo
Abstract
Researches show that groundwater easily leads to tunnel disease. Groundwater seepage field is changed after the tunnel excavated. When crossing the fault fracture zone with groundwater, the tunnel will be cut into independent units with water. Along with the tensile stress on the tunnel invert and upper apex, it's prone to landslides and other damages. This paper analyzes the mechanism of interaction of water and rock, and describes the failure mechanism made by groundwater on the rock by RFPA2D, then analyzes the changes of groundwater seepage field before and after the tunnel excavation by using Rocscience Slide, finally the conventional Inflow prediction methods are contrasted.
Publisher
Trans Tech Publications, Ltd.
Reference7 articles.
1. Xuehai He: The impact of groundwater on the tunnel project safety analysis. Engineering survey, 2004(3): p.25.
2. Yanliang Wang: Effects of environmental geology in tunnel engineering of groundwater. Engineering survey, 2010(12): p.43.
3. Chunan Tang: Seepage characteristics of rock destruction process. Beijing: Science Press, 2004. P. 45.
4. NandagiriL: Field evaluation of unsaturated hydraulic conductivity models and parameter estimation from retention data [J].J. Hydrology, 1996(179), p.197.
5. Vogel T: Effect of the shape of the soil hydraulic functions near saturation on cariably-saturated flow predictions [J]. Adv. Water Res, 2001(24), p.133.