Considering the potential failure modes in levee engineering, the mathematical models of hydrological failure risk and slope slide instability risk for levees are improved.

基于堤防工程可能的失效模式，修正了水文失事风险率和边坡滑动失稳风险率计算模型。

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Mr. DANIEL: Once the movement started and the water pressures developed, there was enough force then just to cause an entire block to slide tens of feet and to breach the levee.

NPR: Panel's Report Assigns No Blame in Levee Failures