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首页> 外文期刊>The international journal on hydropower & dams >PMF-driven dam break modelling and flood hazard mapping for the Sungai Perak cascade
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PMF-driven dam break modelling and flood hazard mapping for the Sungai Perak cascade

机译：PMF驱动的坝体破坏模型和洪水危险绘图的Sungai Perak Cascade

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In general, causes such as piping, overtopping and foundation problems can result in dam failures. Therefore, it is important to predict the breach parameters accurately for dam break modelling. The breach outflow hydrographs for Temengor, Bersia, Kenering and Chenderoh dams yielded peak values of 328 210 m~3/s, 216 366 m~3/s, 191 019 m~3/s and 112 277 m~3/s, respectively. The breach outflow hydrograph with this scenario has the potential to flood the area downstream of the dams. The total inundated area for this scenario was about 3511.6 km~2. The flood wave could be expected to travel to the Sg. Perak river mouth, affecting major towns and villages close to the river banks. The flood impact on the town of Gerik would be most severe, as it is just 28 km from Temengor dam. Gerik would be hit by the flood four hours after a breach of Temengor dam, with a maximum flood depth of 45.7 m. In conditions where a dam breach is caused by a PMF failure, it can be assumed to cause more damage, as people living downstream will not have taken advance precautions, but will only have time for warnings and evacuation.
机译：一般来说，管道，拓扑和基础问题等原因可能导致大坝故障。因此，重要的是准确地预测溃坝建模的突发参数。 Temengor，Bersia，Kenering和Chendhoh Dams的Breach流量水文显示出来的峰值为328 210 m〜3 / s，216 366m〜3 / s，191 019 m〜3 / s和112 277 m〜3 / s 。具有这种情况的Breach流出水文有可能淹没水坝下游的区域。这种情况的总淹没区域约为3511.6 km〜2。洪水波可以预期前往SG。霹雳河口，影响靠近河岸的主要城镇和村庄。 Gerik镇的洪水影响最为严峻，因为它距Temengor Dam仅28公里。 Gerik将在违反Temengor Dam后四个小时被洪水击中，最大洪水深度为45.7米。在大坝违规是由PMF失败引起的条件下，可以假设造成更多损害，因为生活在下游的人们不会提前预付措施，但只有有时间进行警告和疏散。

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