水利与建筑工程学报
水利與建築工程學報
수리여건축공정학보
TECHNIQUE OF SEEPAGE CONTROL
2011年
6期
78-80,108
,共4页
消能工%阶梯消能%消力墩%模型试验%白杨河水库
消能工%階梯消能%消力墩%模型試驗%白楊河水庫
소능공%계제소능%소력돈%모형시험%백양하수고
energy dissipater%stepped energy dissipation%baffle block%model test%Baiyang River Reservoir
针对白杨河水库枢纽工程原设计方案消力池尺寸不足，下游护坦流态不良、冲刷严重的问题，进行了四种不同修改方案的试验研究。通过对原方案及修改方案水流流态的观察，水深、流速、消能率等方面的测量计算，推荐采用“阶梯式溢洪道＋消力墩”的联合消能方案。试验表明，阶梯式消能工可以消除水流的大部分能量，减小消力池及下游护坦的消能负荷。将梯形消力墩布置在下游护坦上，可以有效地削弱水流余能，增强水流扩散。综合运用消能工，不仅避免了护坦及下游河床受到冲刷，还最大地发挥了经济效益。
針對白楊河水庫樞紐工程原設計方案消力池呎吋不足，下遊護坦流態不良、遲刷嚴重的問題，進行瞭四種不同脩改方案的試驗研究。通過對原方案及脩改方案水流流態的觀察，水深、流速、消能率等方麵的測量計算，推薦採用“階梯式溢洪道＋消力墩”的聯閤消能方案。試驗錶明，階梯式消能工可以消除水流的大部分能量，減小消力池及下遊護坦的消能負荷。將梯形消力墩佈置在下遊護坦上，可以有效地削弱水流餘能，增彊水流擴散。綜閤運用消能工，不僅避免瞭護坦及下遊河床受到遲刷，還最大地髮揮瞭經濟效益。
침대백양하수고추뉴공정원설계방안소력지척촌불족，하유호탄류태불량、충쇄엄중적문제，진행료사충불동수개방안적시험연구。통과대원방안급수개방안수류류태적관찰，수심、류속、소능솔등방면적측량계산，추천채용“계제식일홍도＋소력돈”적연합소능방안。시험표명，계제식소능공가이소제수류적대부분능량，감소소력지급하유호탄적소능부하。장제형소력돈포치재하유호탄상，가이유효지삭약수류여능，증강수류확산。종합운용소능공，불부피면료호탄급하유하상수도충쇄，환최대지발휘료경제효익。
The general situation of the project of Baiyang River Reservoir is introduced in this paper, and four different modification schemes are tested and studied pointing to several serious problems of the original scheme, such as the undersize of the stilling basin, the bad flow regime of the lower apron with severe scour. An energy dissipation scheme with the combination of stepped spillway and baffle block is recommended based on considering the flow regime, the water depth, the flow velocity and the energy dissipation ratio. The test results show that the stepped energy dissipater could eliminate most of the energy of flow, and reduce the energy dissipation load of the stilling basin and lower apron. The remaining energy could also be weakened effectively with strengthened water diffusion by trapezoidal baffle block in the lower apron. The baffle block applied in projects could not only protect the apron and downstream river against scour, but also play the most important role in economic benefits.
