减压井淤堵机理及井效恢复新技术试验

Analysis on mechanism of relief-well clogging and experiment on a new technique for its restoration

以长江大堤丁马段减压井更新工程为背景,分析了减压井的机械、化学淤堵机理,并提出一种井效恢复的新技术,即活塞式大降深洗井技术,最后通过室内外试验及在丁马段的应用成果论证了这种洗井新工艺的效果。

Based on the restoration project of the relief-well on Dingma section of Yangtze River Levee, the mechanical and chemical mechanisms are analyzed herein, and then a new technique for restoring the clogged relief-well, i.e. a piston-like deep drop-down well-flushing technique, is presented. Finally, the effect of the new well-flushing technique is demonstrated through the indoor and outdoor tests along with the actual application to Dingma section of Yangtze River Levee.