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首页> 美国卫生研究院文献>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：旨在减少高坝洪水泄洪引起的地面振动的最佳运行方案的提出与验证

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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：向家坝水电站（XHS）的高坝洪水泄洪引起的地面和环境振动对附近建筑物的安全以及周围居民的身心健康具有重大不利影响。作为一种模拟水工结构流致振动的有效方法，水弹性实验方法已被中国学者广泛应用和研究，但相关的系统研究很少在国际期刊上报道。首先，简要回顾并推导了水弹性模型应满足的水力和结构动力相似性条件。 XHS的水弹性模型使用自行开发的高密度橡胶进一步构建，并采用了隔振系统（包括开槽和柔性连接），以避免泵操作，车辆振动和其他实验的外部干扰。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度映射到原型中的地面。为了减少地面振动，进行了实验，对600多个工况下的地面振动强度进行了细致的评估，并在此详细介绍了不同排量下的最佳运行方案。根据2013年，2014年和2015年的原型测试数据，采用提出的最佳运行原理可以显着降低地面振动，这表明本文提出的水弹性方法和减振运行方案是有效可行的。

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