论文部分内容阅读
据《国际建设》1988年4月报道,两台罗宾斯隧洞掘进机在不同的地质条件下都声称获得了创纪录的掘进速度。一台硬岩双护盾罗宾斯隧洞掘进机,在一周(15个班)内掘进了202m,同时进行吊装隧洞的拱圈衬砌和背板。这台直径为5.53m的掘进机正在抗压强度达249.5MPa的多孔状的玄武岩和粘土中挖掘一
According to “International Construction” reported in April 1988, both Robins tunnel boring machines claimed a record speed of tunneling under different geological conditions. A hard-rock double-shield Robins tunnel boring machine advanced 202m in one week (15 classes) and hoisted the arch lining and backplane of the tunnel. This 5.53m diameter roadheader is digging in porous basalt and clay with a compressive strength of 249.5MPa