高坝泄洪诱发环境噪声试验研究  

Experimental Study on Environmental Noise Induced by High Dam Flood Discharge

作　　者：辜晋德[1] 王宇[1] GU Jin-de;WANG Yu(Nanjing Hydraulic Research Institute,Nanjing 210029,China)

机构地区：[1]南京水利科学研究院

出　　处：《水电能源科学》2020年第1期56-59,共4页Water Resources and Power

基　　金：国家重点研发计划(2016YFC0401705)

摘　　要：针对原型高坝大功率泄洪引起的噪声影响范围广、难以定量评估的问题,采用大尺度水工模型量测泄洪消能时的噪声场,根据噪声场的主要声源建立了噪声强度概化模型,对试验数据回归分析得出泄洪水舌入水时的辐射声功率。试验结果表明,水舌入水时辐射声功率与水舌入水角度有关,入水角度越小,辐射声功率越大;挑流水舌入水角度随着泄流量增大而逐渐减小,挑流水舌辐射声功率随着泄洪功率增大而呈抛物线增长。Noise caused by flood discharge in high dam has a great impact on the environment and it is difficult to evaluate.Noise field of flood discharge in hydraulic model is studied in the laboratory.A noise intensity generalization model is established based on the analysis of main sound source of the flood discharge field.The radiation sound power whose the flooding flow enters the water of plunge pool is calculated by regression analysis of the test data.It is shown that the radiation sound power is related to the inlet angle of water tongue.The greater the radiation sound power would be greater when the inlet angle of water tongue is smaller.The radiation sound power of the flow increases parabolic with the increase of discharge power because the inlet angle of water tongue decreases with the increase of discharge.

关 键 词：高坝 泄洪 模型试验 噪声 

分 类 号：TV131.6[水利工程—水力学及河流动力学]