Research purposes: This paper studies and summarizes the development characteristics and engineering treating method of large-scale underground river.
研究目的：本文研究总结大型暗河的发育特征及工程处理方法。
Due to development and utilization of shallow underground water in southern flood alluvial area in the Yellow River Delta area, regional group of funnels have been formed in this area.
黄河三角洲南部冲洪积扇区浅层地下水由于长期大量开发利用，早已形成了区域性漏斗群。
Due to development and utilization of shallow underground water in southern flood alluvial area in the Yellow River Delta area, regional group of funnels have been formed in this area.
黄河三角洲南部冲洪积扇区浅层地下水由于长期大量开发利用，早已形成了区域性漏斗群。
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