防洪堤坝不仅在河道洪水超过设计泄洪能力时才会发生防洪事故，水力因素的不确定性也会引起洪灾损失。
In flood control DAMS it is not only the failure to prevent flood larger than their design carrying capacity, but also the uncertainties of hydraulic factors that cause disasters.
他指出由水泥和泥土建造的应急防洪堤坝竖立在格里哈尔瓦河上，已经迅速隆起，有淹没该州首府比亚埃尔莫萨的威胁。
He pointed to emergency levees made of concrete and dirt erected on the banks of the Grijalva, which has swelled rapidly and threatens to flood the state capital, Villahermosa.
没有这项保证，筹募到的款项其实可能是转移自未来用于贫穷国家基础服务的开支，也就是将用作建造学校和医院的预算，改为兴筑防洪堤坝。
Without that, funds risk being raised by diverting future spending away from essential services in poor countries -taking money to build flood defences out of budgets to build schools and hospitals.
1570年、1584年、1719年、1891年和1997年都有严重洪灾的记录，当地建设防洪堤坝的第一次记载可以追溯到13世纪。
Severe floods were recorded in 1570, 1584, 1719, 1891, and 1997, with the first records of local embankments for flood control dating from the thirteenth century.
对砂砾石料的工程性质、碾压参数和碾压方式对砂砾石料防洪堤坝兼做公路路基的压实质量的影响进行全面分析，可为此类工程实践提供参考。
On the basis of gravel engineering quality, rolling parameter and rolling means, the compaction quality with gravel as flood prevention embankment and highway subgrade is analyzed in an all-round way.
对砂砾石料的工程性质、碾压参数和碾压方式对砂砾石料防洪堤坝兼做公路路基的压实质量的影响进行全面分析，可为此类工程实践提供参考。
The general analysis on the impact of engineering property, rolling parameter and rolling mode on the compaction quality of gravel material can provide reference for similar engineering construction.
对砂砾石料的工程性质、碾压参数和碾压方式对砂砾石料防洪堤坝兼做公路路基的压实质量的影响进行全面分析，可为此类工程实践提供参考。
The general analysis on the impact of engineering property, rolling parameter and rolling mode on the compaction quality of gravel material can provide reference for similar engineering construction.
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