CAJ | 학술논문

向家坝水电站冲沙孔由导流底孔改建而成，结构体型受到了较大限制，加之冲沙孔下泄水流为高速含沙水流，且紧邻下游引航道，消能防冲设计标准较高。结合向家坝工程实际，通过水工模型试验，从消能效果、消力池临底及临边流速、改造难易度等多方面，对3种冲沙孔体型进行了分析比选，确定了最终的优化体型，较好的解决了出口消能防冲难题。
향가패수전참충사공유도류저공개건이성，결구체형수도료교대한제，가지충사공하설수류위고속함사수류，차긴린하유인항도，소능방충설계표준교고。결합향가패공정실제，통과수공모형시험，종소능효과、소력지림저급림변류속、개조난역도등다방면，대3충충사공체형진행료분석비선，학정료최종적우화체형，교호적해결료출구소능방충난제。
The diversion bottom outlet of Xiangjiaba Hydropower Station was reconstructed into sand sluicing outlet , so its structure and shape were restricted;moreover, the water released from the sand sluicing outlet is high -velocity flow containing sediment, which is near the approach channel at downstream , so the design standard of energy dissipation and erosion control is high.By consideration of the engineering practice , through hydraulic model test , 3 shapes of sand sluicing outlets are analyzed and compared in terms of energy dissipation effect , velocity near bottom and boundary and reconstruction difficulty .The final op-timization is determined , which solved the problem of energy dissipation and erosion control .