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首页> 外文期刊>International Journal of Environmental Research and Public Health >Presentation and Verification of an Optimal Operating Scheme Aiming at Reducing the Ground Vibration Induced by High Dam Flood Discharge
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Presentation and Verification of an Optimal Operating Scheme Aiming at Reducing the Ground Vibration Induced by High Dam Flood Discharge

机译：展示和验证最佳操作方案，旨在减少高坝洪水排放诱导的地面振动

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摘要

Ground and environmental vibrations induced by high dam flood discharge from the Xiangjiaba hydropower station (XHS) has significant adverse effects on nearby building safety and the physical and mental health of surrounding residents. As an effective approach to simulate the flow-induced vibration of hydraulic structures, the hydro-elastic experiment approach has been extensively applied and researched by Chinese scholars, but the relevant systematic research is rarely reported in international journals. Firstly, the hydraulic and structural dynamic similarity conditions that should be satisfied by the hydro-elastic model are briefly reviewed and derived. A hydro-elastic model of the XHS was further constructed using self-developed high-density rubber, and the vibration isolation system (including open trenches and flexible connects) was applied to avoid the external disturbances of pump operation, vehicle vibration and other experiments in the laboratory. Based on the data of model and prototype dynamic tests, a back propagation (BP) neural network was established to map the acceleration of the physical model to the ground in the prototype. In order to reduce the ground vibration, experiments were carried out to meticulously evaluate the ground vibration intensity under more than 600 working conditions, and the optimal operation scheme under different discharge volumes is presented here in detail. According to the prototype test data in 2013, 2014, and 2015, ground vibrations were significantly reduced by applying the presented optimal operation principle which indicates that the presented hydro-elastic approach and the vibration attenuation operation scheme were effective and feasible.
机译：由湘济坝水电站（XHS）高坝洪水排放诱导的地面和环境振动对附近建筑安全性以及周围居民的身心健康具有显着的不利影响。作为模拟液压结构流动诱导的振动的有效方法，水力弹性实验方法已被中国学者广泛应用和研究，但在国际期刊上很少报告相关的系统研究。首先，简要回顾和衍生应满足液压和结构动态相似条件。采用自开发的高密度橡胶进一步构建XHS的水力弹性型号，采用振动隔离系统（包括开放式沟槽和柔性连接）以避免泵运行的外部干扰，车辆振动和其他实验实验室。基于模型和原型动态测试的数据，建立了反向传播（BP）神经网络，以将物理模型的加速映射到原型中的地面。为了降低地面振动，进行实验以精心评估在600多个工作条件下的地面振动强度，并详细介绍了不同放电体积下的最佳操作方案。根据2013年的原型测试数据，2014年和2015年，通过应用所呈现的最佳操作原理，显着降低了地面振动，这表明所提出的水力弹性方法和振动衰减操作方案是有效和可行的。

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