%A %T The Main Cause and Lesson of %0 Journal Article %D 2006 %J Science & Technology Review %R %P 72-77 %V 24 %N 0607 %U {http://www.kjdb.org/CN/abstract/article_924.shtml} %8 2006-07-10 %X From the point of view of hydrology, the cause of "August 1975" dam failure is mainly due to the low values of reservoir design floods rather than the low flood control standards; We have mainly learned from the failure: ① Scientific and technologic research shall not be leaning to one side, but absorb and accept whatever are good; ② Raising of flood control standards to a large extent would waste a huge amount of fund and not be feasible, and until today problems remain unsolved; ③ Learning foreign experience must be combined with the actuality in China, not by rote; ④ Major earth and rockfill dams must have "an emergency exit" (emergency spillway or emergency measures) in case super floods cause dam failures.