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首页> 外文期刊>Environmental Geology >Debris flow prediction and prevention in reservoir area based on finite volume type shallow-water model: a case study of pumped-storage hydroelectric power station site in Yi County, Hebei, China
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Debris flow prediction and prevention in reservoir area based on finite volume type shallow-water model: a case study of pumped-storage hydroelectric power station site in Yi County, Hebei, China

机译：基于有限体积型浅水模型的库区泥石流预测与防治-以河北省宜县抽水蓄能电站现场为例

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In recent years, the development of pumped-storage hydroelectricity has seen a very rapid increase, and lots of stations have been proposed to be built in China to adjust the energy structure of production and alleviate electrical energy shortages. The site of pumped-storage hydroelectric power plants is usually chosen in the mountain area, which can conveniently provide headwaters and height difference for the proper functioning of hydroelectric power station; however, geological disasters such as debris frequently flows in the mountain areas, posing great threat to the safety of plants and staff. A large pumped-storage hydroelectric power station will be built in the Taihang Mountains in the northwest of Yi County, Hebei province. To predict the potential scale of debris flow hazard, the shallow-water model based on the finite volume method (SFLOW model) is used. During the work, reconnaissance, geomorphological analysis, and laboratory experiment are carried out for model construction and data input. Then the debris flow designed for 20-, 50-, 100-, and 200-year return periods and the flood caused by dam break are simulated. The simulation study shows that the potential debris flow hazard will greatly harm the reservoir area, and if debris flows destroy the dam, floods could affect the residents of a maximum of 1.21 million square meters downstream. To prevent debris flows, retaining walls in the SFLOW model are set, and the results show that they can effectively reduce the hazard area of debris flow, ensuring the safety of the reservoir area. In general, the SFLOW model can accurately and efficiently solve the problem of fluid flow on irregular terrain and can be applied to similar engineering projects.
机译：近年来，抽水蓄能水电的发展迅猛发展，在中国已经提出要建设许多发电站，以调整生产的能源结构并缓解电能短缺。抽水蓄能电站的选址通常选择在山区，可以方便地提供水源和高度差，以使水电站正常运行。但是，诸如碎屑之类的地质灾害经常在山区流动，对工厂和人员的安全构成了极大的威胁。将在河北省彝县西北部的太行山上建造一座大型抽水蓄能电站。为了预测泥石流灾害的潜在规模，使用了基于有限体积法的浅水模型（SFLOW模型）。在工作期间，进行了侦察，地貌分析和实验室实验，以建立模型和输入数据。然后，模拟了设计用于20年，50年，100年和200年回归期的泥石流以及由溃坝引起的洪水。模拟研究表明，潜在的泥石流危害将极大地损害水库面积，如果泥石流破坏了大坝，洪水将影响下游最多121万平方米的居民。为了防止泥石流，在SFLOW模型中设置了挡土墙，结果表明，它们可以有效地减少泥石流的危险区域，确保了库区的安全。通常，SFLOW模型可以准确有效地解决不规则地形上的流体流动问题，并可以应用于类似的工程项目。

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