新安江大坝坝基固结灌浆补强处理

Foundation consolidation grouting treatment of Xin'anjiang dam

新安江大坝已运行40多年。本文结合新安江大坝坝基固结灌浆补强处理,从设计、灌浆试验、灌浆施工等方面阐述了在已建大坝水库运行条件下,利用坝内现有的有限空间进行固结灌浆补强必须充分考虑坝体结构、上游水压力、坝基排水孔、扬压力孔、地质条件等因素,通过灌浆试验,取得合理灌浆参数。该工程的坝基固结灌浆补强处理经验对其它类似大坝补强工程具有一定的参考价值。

Xin＇anjiang dam has been in operation more than 40 years.The article expatiated on that foundation consolidation grouting treatment should consider the dam structure, upstream water pressure, drainage hole, uplift hole, geological conditions in the terms of dams in operation, in the limited inner dam space and gain the grouting parameters by testing through introduction of the project foundation consolidation grouting treatment design, grouting testing and construction. The experience of Xin＇anjiang dam foundation grouting is of reference value to similar projects.