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1983～1984年笔者在伊拉克巴格达工作时,参观了三种类型的顶管机械:中口径(1050～1500毫米)反铲型顶管机;大口径(2000～2500毫米)全断面旋转切削型和土压平衡型项管机。这三种顶管机机械化程度比较高,工人仅作些操作机械和挂钩等辅助工作;顶进速度比较快,每周顶完150米;顶进质量较好。有一些保证质量,加快顶进,简化设备加工的措施和考虑,值得借鉴,现摘要介绍二种顶管机如下:
From 1983 to 1984, when I was working in Baghdad, Iraq, I visited three types of pipe jacking machines: medium-diameter (1050 to 1500 mm) backhoe-type pipe jacking machines; large-diameter (2000 to 2500 mm) full-section rotary cutting type and Earth pressure balance type pipe control machine. The mechanization degree of these three pipe jacking machines is relatively high. Workers only perform some auxiliary operations such as operating machines and hooks; the jacking speed is relatively fast, and the top end finishes at 150 meters; the jacking quality is better. There are a number of measures and considerations that guarantee quality, speed up jacking, and simplify the processing of equipment. It is worth learning from them. The two pipe jacking machines are summarized as follows: