Abstract Based on the current technical status and main problems of waterproof and drainage system of the railway tunnel in China, the basic characteristics of convex shell type waterproof and drainage board are introduced, a theoretic calculation and research on equivalent pipe diameter and water discharge capacity are conducted. The results show that the minimum equivalent pipe diameter of convex shell type waterproof and drainage board is 0.062 6 m per unit width (longitudinal linear meter of tunnel) and its water discharge capacity is 376-2 138 m3/d under different conditions; the water discharge capacity of convex shell type is about 18-38 times of that of loop blind pipe; improvement of compressive strength is an effective measure to guarantee its water discharge capacity; the convex shell type waterproof and drainage board can replace the traditional one and the loop blind pipe.
Abstract：
Based on the current technical status and main problems of waterproof and drainage system of the railway tunnel in China, the basic characteristics of convex shell type waterproof and drainage board are introduced, a theoretic calculation and research on equivalent pipe diameter and water discharge capacity are conducted. The results show that the minimum equivalent pipe diameter of convex shell type waterproof and drainage board is 0.062 6 m per unit width (longitudinal linear meter of tunnel) and its water discharge capacity is 376-2 138 m3/d under different conditions; the water discharge capacity of convex shell type is about 18-38 times of that of loop blind pipe; improvement of compressive strength is an effective measure to guarantee its water discharge capacity; the convex shell type waterproof and drainage board can replace the traditional one and the loop blind pipe.
MA Chaofeng MA Weibin GUO Xiaoxiong WANG Zhiwei XU Xueliang YU Dongyang
.Research on Water Discharge Capacity of Convex Shell Type Waterproof and Drainage Board for the Railway Tunnel[J] MODERN TUNNELLING TECHNOLOGY, 2020,V57(2): 204-208
2020, Vol. 57 