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采用定向钻穿越技术将各种输送介质,如管道、光缆成功送往江、河对岸,已经成为目前国内外管道施工普遍采用的手段之一。然而运用定向钻穿越砂砾地质的河流还是一项难度较大的技术,欧美国家在成功运用定向钻技术穿越砂砾地质河流这方面已经有不少成功的案例。 一般砂砾层分布在河流的两岸,是多年河床冲刷、淤积而形成的砾石层,其厚度随时间的推移约有几十米
The use of directional drilling technology will be a variety of transmission medium, such as pipes, fiber optic cable successfully sent to the river, the other side of the river, has become the current pipeline construction at home and abroad one of the means commonly used. However, the use of directional drilling through gravelly geological rivers is still a more difficult technology. There have been many successful cases in Europe and the United States in the successful application of directional drilling technology to cross gritty geological rivers. Gravel layer is generally distributed in the two sides of the river, is the years of riverbed erosion, siltation and the formation of gravel layer, the thickness of the passage of time with about tens of meters