大渡河沙坪二级水电站砂石料系统噪声影响预测及隔声措施

Noise Prediction and Insulation Measures of Aggregate System of ShapingⅡ-Level Hydropower Station in Daduhe River

随着水电工程施工环境保护要求的提高,施工期噪声影响及相应的环保措施日益受到关注。为减少噪声对周边居民的影响,采用点声源模式和Cadna/A声场仿真软件预测模式预测了大渡河沙坪二级水电站砂石料系统的噪声影响,提出了隔声环保措施,并比较了噪声防治措施前后的噪声预测值。结果表明,采取噪声防治措施后,减少了噪声对周边居民的影响,昼夜均未出现噪声超标情况,能满足相应声功能要求。

With the improving of construction environment protection demand of hydraulic project,the noise impact and environment protection measures during the construction period is increasingly given attention.In order to reduce the impact of noise on the surrounding residents,the mode of point sound source and the prediction mode of Cadna/A sound field simulation software were used to predict the noise influence of the aggregate system of ShapingⅡ-level hydropower station in Daduhe River.The noise-insulated environment protection measures have been put forward.The noise prediction values are compared by considering control measures or not.The results show that the impact of noise on the surrounding residents was reduced by taking noise control measures,and the daily acoustic environment was not exceeded.So,it meets the functional requirements of the sound environment.