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在以前的文献中，对坝基附近水准点沉陷值的测量与计算方法不能令人满意，可能会得出错误的结论或解释。对马马康水电站高程网进行了水准测量，发现高程网出现了失调，其他水利枢纽也存在这些问题。为避免出现不可信的解释，必须遵守提出的一些条件。
In the previous literature, the method of measuring and calculating subsidence near the dam foundation was unsatisfactory and may yield erroneous conclusions or explanations. The leveling survey of the Mackang Kang hydropower station elevation network found that the elevation network was out of alignment and that other hydropower hubs also had these problems. In order to avoid untrustworthy explanations, certain conditions must be observed.