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前言上海延安东路越江隧道主体工程之一的江中段园形隧道采用盾构法施工。全程1476m(除去竖井部份以外,园形管片实际长度为1441m),自1984年12月18日开始从浦东三号井推进,至1987年10月底完成最后一环管片。在2年10个月的施工过程中经历了许多波折,排除了一系列障碍,克服了不少困难,在极其不利的条件下摸索前进,在获得成功的同时也有不少经
Foreword Shanghai Yan’an East Road, one of the main part of the river tunnel tunnel in the middle section of the tunnel using the shield construction. The entire length of 1476m (except for the shaft portion, the actual length of the circular pipe segment is 1441m). Since December 18, 1984, it started from Pudong No.3 well and completed the last pipe segment by the end of October 1987. During the two-year and 10-month construction period, a great deal of twists and turns have taken place, eliminating a series of obstacles, overcoming a great deal of difficulties, and exploring under extremely unfavorable conditions. At the same time, many successes have been achieved.