Aiming at the natural conditions of project area in Nanmenxia Fourth Branch of North Trunk Canal of Huangshui River,the causes of loess soil sinkhole were analyzed.Furthermore,the processing plans were proposed,then compared and selected,so as to provide references for smooth running of the project construction.%针对湟水北干渠南门峡四支渠工程区域的自然条件,分析了黄土落水洞的成因,进而提出处理方案,并对方案进行了比较和选择,以为工程施工的顺利进行提供参考。
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