Abstract Water inrush often occurs during tunnel construction in karst areas due to their complexity, and this frequently results in surface settlement. This paper proposes an analytical method for construction in a karst development zone in light of water inrush induced surface settlement, namely to analyze the features of the surface settlement with a settlement diagram, to determine the geological structures of the karst development zone, to study the zone's boundary with geological data related to the settlement area, and to analyze the supply relation between the water inrush and rivers according to the relationship between the settlement centre and the rivers. Additionally, using the data of surface settlement induced by water inrush at YDK24+098 of the Xiangshan tunnel on the Longyan-Xiamen railway, this paper analyzes the geological structures of the karst development zone, the longitudinal boundary of the karst, and the supply relation between the water inrush and the rivers, thereby verifying the feasibility of the above mentioned analytical method.
Abstract：
Water inrush often occurs during tunnel construction in karst areas due to their complexity, and this frequently results in surface settlement. This paper proposes an analytical method for construction in a karst development zone in light of water inrush induced surface settlement, namely to analyze the features of the surface settlement with a settlement diagram, to determine the geological structures of the karst development zone, to study the zone's boundary with geological data related to the settlement area, and to analyze the supply relation between the water inrush and rivers according to the relationship between the settlement centre and the rivers. Additionally, using the data of surface settlement induced by water inrush at YDK24+098 of the Xiangshan tunnel on the Longyan-Xiamen railway, this paper analyzes the geological structures of the karst development zone, the longitudinal boundary of the karst, and the supply relation between the water inrush and the rivers, thereby verifying the feasibility of the above mentioned analytical method.
2014, Vol. 51 