水力发电
水力髮電
수력발전
WATER POWER
2009年
6期
28-31
,共4页
尹进步%梁宗祥%陈卫平%龚红林
尹進步%樑宗祥%陳衛平%龔紅林
윤진보%량종상%진위평%공홍림
中小型拱坝%表孔%消能%冲坑深度
中小型拱壩%錶孔%消能%遲坑深度
중소형공패%표공%소능%충갱심도
medium and small-size arch dam%crest spillway%energy dissipation%depth of scouring pit
依据圆满贯工程水工水力学模型试验资料,对中小型拱坝表孔大流量泄洪建筑物体形问题进行研究,提出了一种复合消能工体形与设计思路,即采用宽尾墩窄缝纵向水舌与连续鼻坎横向扩散的综合形式,可使水舌在纵向与横向实现全范围的扩散,充分利用消能空间与水体,既适应了不同流量洪水泄洪的要求,又使消能率得到大幅度提高,大流量泄洪冲坑深度可减小28%.
依據圓滿貫工程水工水力學模型試驗資料,對中小型拱壩錶孔大流量洩洪建築物體形問題進行研究,提齣瞭一種複閤消能工體形與設計思路,即採用寬尾墩窄縫縱嚮水舌與連續鼻坎橫嚮擴散的綜閤形式,可使水舌在縱嚮與橫嚮實現全範圍的擴散,充分利用消能空間與水體,既適應瞭不同流量洪水洩洪的要求,又使消能率得到大幅度提高,大流量洩洪遲坑深度可減小28%.
의거원만관공정수공수역학모형시험자료,대중소형공패표공대류량설홍건축물체형문제진행연구,제출료일충복합소능공체형여설계사로,즉채용관미돈착봉종향수설여련속비감횡향확산적종합형식,가사수설재종향여횡향실현전범위적확산,충분이용소능공간여수체,기괄응료불동류량홍수설홍적요구,우사소능솔득도대폭도제고,대류량설홍충갱심도가감소28%.
Base on the experimental study on hydraulics model of Yuanmanguan hydropewer station, this paper researches the shape of large-discharge flood-releasing energy dissipator for crest spillway of medium-& small-sized arch dam and puts forward a shape and design concept of a compound energy dissipator, that is, adopting the comprehensive type of the longitudinal nappe of flaring gate pier and transverse spread of continuous bucket lip which can make water nappe to spread in whole range in the longitudinal and transverse directions so as to reach full energy dissipation. It could meet the needs of flood releasing with different discharges but also can greatly enhance the energy dissipation ratio and reduce the depth of scouring pit up to 28%.
