穿越全断面砾石层的盾构施工

Construction of EPB Shield Passing through Gravel Layer

通过北京市清河污水隧洞工程采用加泥式土压平衡盾构掘进机施工的实例,在国内首次介绍了盾构机成功穿越全断面砾石地层的有关技术参数和工程实测成果,并给出了成功施工的关键在于配制性能适宜的加泥泥浆的结论。

Taking the Beijing Qinghe River sewage tunnel excavated by a slurry EPB shield as an example. the paper introduces relevant technical parameters of the shield successfully passing through gravel layer, which is the first time in China, and the results of actual measurement and then conies to a conclusion that the key of successful construction lies in the preparation of appropriate slurry.