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解放以来,我省修建了大量的水利工程,其中中、小型水库绝大多数为土坝,而坝下埋设钢筋混凝土管来通水灌溉或发电又是一种主要型式。多年来的运行结果表明,大多数坝下钢筋混凝土管都不同程度地产生了漏水。漏水的原因主要是混凝土裂缝、接头止水不密、混凝土蜂窝等所致。这些漏水影响建筑物本身和土坝的安全,引起了人们的普遍重视。如何防止坝下埋管的开裂,设计和施工都要采取有效的措施。
Since the liberation, our province built a large number of water conservancy projects, of which the vast majority of medium and small reservoirs for the earth dam, and embedment of reinforced concrete pipe to the water irrigation or power generation is a major type. The results of years of operation show that most of the RC pipes under the dam have different degrees of leakage. Leakage is mainly due to concrete cracks, joints are not close water, caused by concrete honeycomb. These leaks affect the safety of the building itself and the earth dam, causing widespread concern. How to prevent cracking of buried pipes in dam, effective measures must be taken in the design and construction.