1985年9月,美国的哈迪坝经住受了多年来袭击密歇根州下半岛部分的最大洪水。洪水后不久的一次目测检查并没有发现什么损坏,没有发现沉降、渗漏,在其下游坡上也未见到潮湿的斑块。这一结果表明,几个星期前对该坝砂筑体中的124个空隙的灌浆是成功的。这项工作既采用了老式的探测方法,又采用了具有当代技术水平的地球物理的探测方法。 In September 1985, the Hadi Dam in the United States survived the largest flood that hit parts of the lower peninsula of Michigan over the years. A visual inspection shortly after the flood did not reveal any damage, no settlement or seepage, nor wet plaque on its downstream slope. This result shows that a few weeks ago the grouting of 124 voids in the dam sand body was successful. This work uses both old-fashioned probing methods and geophysical probing methods with contemporary technology.