吉林台一级水电站深孔泄洪洞体型方案试验

吉林台一级水电站深孔泄洪洞，原设计方案采用弧门处不作突扩跌坎，并取消出口斜洞段的泄洪建筑物布置体型方案。本试验以原方案为基础，通过水工模型试验，重点就深孔泄洪洞有压洞出口弧门处，采用突扩跌坎形式的泄洪系统最终方案，进行了试验验证和局部体型优化。通过对试验成果分析和多方咨询论证，深孔泄洪洞最终仍采用有压洞出口突扩跌坎形式，并对深孔泄洪洞主要设计体型方案、试验结果作了论述，并针对存在的问题提出了相应的最终方案。该方案具有体型简单、起挑水位低、水舌落点位置合理、对河床冲刷程度轻的优点。

Shape Scheme Test of Deep Hole Spillway Tunnel in Jilintai First Stage Hydropower Station

The original scheme of radial gate of deep hole spillway tunnel is without sudden expanded falling-sill in Jilintai first stage hydropower station, and the flood discharge shape scheme at oblique tunnel in the exit section is canceled.Based on the original scheme, by the hydraulic model test, our test adopts the final scheme of sudden expanded falling-sill and verifies and optimizes the scheme.The main deep hole spillway tunnel shape scheme is discussed,and the final scheme is proposed.The scheme has the advantages of simple somatotype, low water level, appropriate impact point of water jet and river bed slightly scouring.