CAJ | 학술논문

乐昌峡水电站溢流坝属高水头、大流量泄水建筑物，溢流坝设置了5孔泄洪孔口，其溢流堰采用WES型曲线。水力模型试验表明，初设方案的溢流堰面出现了较大的负压值，不能满足设计规范的要求，堰面有可能会产生空蚀破坏。为此在分析溢流堰面产生负压原因的基础上，对溢流堰面体型进行修改和优化，结果明显降低了溢流堰面的负压值，有利于工程的安全运行。
악창협수전참일류패속고수두、대류량설수건축물，일류패설치료5공설홍공구，기일류언채용WES형곡선。수력모형시험표명，초설방안적일류언면출현료교대적부압치，불능만족설계규범적요구，언면유가능회산생공식파배。위차재분석일류언면산생부압원인적기출상，대일류언면체형진행수개화우화，결과명현강저료일류언면적부압치，유리우공정적안전운행。
The overflow dam of Lechangxia hydropower station is a high head and large flow sluice structure. The dam has set up 5 release flood orifice,and the overflow weir is used by WES curve. The hydraulic model test shows that the overflow weir surface of the preliminary design scheme appears larger negative pressure value. As the value can not meet the requirements of the design specification, the weir surface may cause cavitations damage. Based on the analysis of causes of the overflow weir surface negative pressure in this paper, the overflow weir surface shape is modified and optimized, and the pressure is significantly reduced which is conducive to the safe operation of the project.