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穿黄隧洞1∶1仿真试验是南水北调中线最重要的试验项目之一,试验课题多、技术含量高、试验周期长,备受大家关注,在此作简要介绍。一、仿真试验的目的南水北调中线穿黄工程采用隧洞方案穿越黄河,穿黄隧洞为大型水工隧洞,内径7m,外径8．7m,全长4250m．埋深于黄河河床下23～35m,除承受外部较高的水、土荷载外,还承受＞0．5MPa的内水压力。隧洞衬砌采用双层复合结构,外衬为拼装
Crossing the Yellow Tunnel 1: 1 Simulation test is one of the most important pilot projects of the Middle Route of South-to-North Water Diversion Project. It has many pilot projects, high technical contents and long test period, attracting much public attention. Here we give a brief introduction. First, the purpose of simulation test The Yellow River Project in the Middle Route of South-to-North Water Diversion Project adopts a tunnel scheme to cross the Yellow River. The Yellow River Tunnel is a large-scale hydraulic tunnel with an inner diameter of 7m and an outer diameter of 8.7m and a total length of 4250m. Buried deeper than the river bed 23 ~ 35m, in addition to withstand external water and soil load, but also to withstand> 0.5MPa of the internal water pressure. Tunnel lining with double composite structure, the outer lining for the assembly