定向调查数据

最后更新：2017年5月8日

定向调查数据是什么意思？

在挖沟技术的背景下的定向调查数据涉及水平定向钻井（HDD）的过程，并指从沿着钻孔的路径（例如方位角和倾斜）使用测量站所进行的调查收集的原始数据。分析数学地到达所需的计算。在挖沟技术中，定向调查用于确定铺设管道或其他地下结构的路径的可行性。

365金博宝TrenchlessPedia解释了定向调查数据

T.he directional survey uses methods such as the tangential method, the average angle method, the radius of curvature method and driller bias in its calculations. The angular position is determined for every foot drilled, after which necessary corrections are made. Usually an inclination target is given to the driller, which he needs to hit at the end of the joint to be drilled. The survey data can be used to monitor the path to ensure that the target exit is reached, to orient tools used for deflecting the path, to ensure that the drill path does not intersect other underground structures or pipelines, and to map the underground for future reference. Magnetic interference can affect the reading of a survey station, which can result in inaccurate data. An artificial magnetic field on the surface can often compensate for this potential.

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