“路线是个纲,纲举目张”。在毛主席革命路线指引下,上海市基础工程公司在上海市机械学院、上海市政工程设计研究所等有关单位协作配合下,于1972年开始,在顶管工程中采用激光导向等施工技术,两年多来经上海、杭州、南京等地工程实践,获得了初步成果。 顶管是不用开挖管槽敷设地下管道的一种方法。特别是在地下管道通过铁路、堤坝 “The route is a key link, the outline of the program.” Under the guidance of Chairman Mao’s revolutionary line, with the cooperation of Shanghai Mechanical Engineering Institute and Shanghai Municipal Engineering Design Institute and other relevant units, Shanghai Foundation Engineering Co., Ltd. started construction in 1972 and used laser-guided construction technology for pipe jacking. Over the past years by Shanghai, Hangzhou, Nanjing and other engineering practice, obtained initial results. Pipe jacking is not a method of laying underground pipelines. Especially in underground pipelines through the railway, dam