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HDD for Watercourse Crossings

机译:水道穿越硬盘

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摘要

Over the last 30 years, horizontal directional drilling has become the preferred pipeline construction method to cross major water-ways.The construction impact of HDD is generally limited to each side of the waterway and associated wetlands. This has made HDD the method of choice with most permit authorities and environmental regulators. HDD also provides significant depth of cover under the river bed. This provides protection from moving debris on the river bed, anchors and potential scour of the river bed. As the number and capability of HDD contractors has grown, most often HDD is also the least expensive alternative.
机译:在过去的30年中,水平定向钻井已成为穿越主要水道的首选管道施工方法.HDD的施工影响通常限于水道的每一侧和相关的湿地。这已使HDD成为大多数许可证颁发机构和环境监管机构的首选方法。硬盘驱动器还在河床下提供了很大的覆盖深度。这样可以防止碎屑在河床上移动,锚定以及河床的潜在冲刷。随着HDD承包商数量和能力的增长,大多数情况下HDD也是最便宜的选择。

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