Abstract Water bursts are one of the most serious geological disasters that can occur during the construction of long deep-buried tunnels, and their occurrences are closely related to the aquifer ahead of the working face or outside the free face. In this paper, the causes of water burst occurrences in long deep-buried tunnels are analyzed. Five kinds of structures and models are systematically presented: a highly fractured zone at upper wall of an uncemented and water-rich compressive fault ; an uncemented and water-rich tensional fault zone; an uncemented and water-rich faulted bedding plane (a closely jointed rock mass); water-filling karst; and an underground water-bearing syncline structure and its water burst model. Moreover, disasters that occurred in five kinds of structures are analyzed through examples.
Abstract：
Water bursts are one of the most serious geological disasters that can occur during the construction of long deep-buried tunnels, and their occurrences are closely related to the aquifer ahead of the working face or outside the free face. In this paper, the causes of water burst occurrences in long deep-buried tunnels are analyzed. Five kinds of structures and models are systematically presented: a highly fractured zone at upper wall of an uncemented and water-rich compressive fault ; an uncemented and water-rich tensional fault zone; an uncemented and water-rich faulted bedding plane (a closely jointed rock mass); water-filling karst; and an underground water-bearing syncline structure and its water burst model. Moreover, disasters that occurred in five kinds of structures are analyzed through examples.
LUO Xiong-Wen-1,
HE Fa-Liang-2
.A Study of Geological Structures Inclined to Disaster and Models of Water Burst in Deep-Buried Long Tunnels[J] MODERN TUNNELLING TECHNOLOGY, 2014,V51(1): 21-25
2014, Vol. 51 