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结合工程特点,介绍大直径改制机头顶管施工关键技术及其与普通顶管机头的异同和优越性,并对其进行经济效益分析比较。
Combining with the engineering characteristics, this paper introduces the key technology of the construction of large-diameter modified nose-head pipe and its similarities and differences with the common pipe jacking head, and analyzes its economic benefits.