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本文结合我国近年完成的一些长输管道大型河流穿越工程中遇到的施工技术问题,从管体结构、水下管沟开挖、穿越管段就位、河床下管道穿越等方面展开论述,详细介绍了国内外大型河流穿越施工方法并予以对比。1972年美国首次成功地在穿越施工中应用了定向钻穿越技术,我国使用从美国里丁贝茨公司引进的大型定向钻机于1986年在濮阳完成黄河穿越施工,管道出土点的纵、横向误差均小于允许误差的1％。这项技术的优点突出,值得大力推广。
Based on the construction technology problems encountered in some large-scale river crossing projects of long-distance pipelines completed in recent years in our country, this paper discusses in detail the pipe structure, the excavation of underwater pipe ditches, the passage of pipe sections and the crossing of the riverbed. Large-scale domestic and international river crossing construction methods and to be compared. In 1972, for the first time, the United States successfully applied directional drilling technology in crossing construction. In China, large-scale directional drilling machines introduced from the United States of America, Riding Bates, completed the Yellow River crossing construction in Puyang in 1986. The vertical and horizontal errors of the excavated points Less than 1% of allowable error. The advantages of this technology are outstanding and worth promoting.