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板桥土壩自1953年发现壩内裂缝后,到1955年底,一共进行了三次灌注泥浆处理。三次灌浆的简单情况见表1: 由于土壩裂缝进行灌浆在我国是第一次,因而对其效果如何是有怀疑的,特别是对下述两个问题不能得到肯定的回答:(1)壩内裂缝如何全部填实的问题;(2)壩内裂缝灌浆只是治标的办法,不能消除产生裂缝的根本原因,因而使得在1955年决定板桥土壩的永久处理措施时,不得不舍弃最经济的灌浆处理方案,而采取了费用大的心墙加固方案。从而可知,研究板桥土壩裂缝灌浆的效果是有着迫切和实际意义的。
Banqiao earth dam found cracks in the dam in 1953, by the end of 1955, a total of three perfusion mud treatment. The simple case of three grouting is shown in Table 1. The grouting due to the earth dam crack is the first time in our country, therefore, it is doubtful about its effect. In particular, the affirmative answers can not be obtained for the following two problems: (1) (2) Crack grouting within the dam is only a measure of stopping the storm and can not eliminate the root cause of the crack. As a result, when the decision was made in 1955 on the permanent measures for the Itabashi dam, the most economical Of the grouting treatment program, and the cost of a large wall reinforcement program. It can be seen, the study of Banqiao earth dam crack grouting effect is of urgent and practical significance.