铁路隧道凸壳型防排水板通水能力研究

文章基于我国铁路隧道防排水体系的技术现状及铁路隧道防排水领域存在的主要问题,介绍了凸壳型防排水板的基本特征,并对凸壳型防排水板的等效管径、通水量等进行了理论计算和研究。结果表明:单位幅宽(隧道纵向延长米)凸壳型防排水板的最小等效管径为0.0626 m,不同工况下其通水量为376~2138 m^3/d;凸壳型防排水板的通水能力是环向盲管的18~38倍;提高凸壳型防排水板凸壳体的抗压强度是确保其通水能力的有效措施;凸壳型防排水板可全面替代传统的防水板与环向排水盲管设置。

Research on Water Discharge Capacity of Convex Shell Type Waterproof and Drainage Board for the Railway Tunnel

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 theo retic 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 0.0626 m per unit width(longitudinal linear meter of tunnel)and its water discharge capacity is 376-2138 m^3/d under different conditions;the water discharge capacity of convex shell type is about 18-38 times of that of loop blind pipe;im provement 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.