This paper has discussed how to select geoidal model and how to determine normal height in GPS survey of long distance transmission line project.

就长距离超高压送电线路工程的GPS测量中如何选择大地水准面模型，如何确定GPS测量的高程等问题进行了讨论。

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And the foundation rock obtained from the survey line, the RQD of data were analyzed to carry out mass changes the forecast model E050.

并对整个建基岩体由测线法获得的RQD数据进行整理统计分析，从而进行岩体变模e050的预测。

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