CAJ | 학술논문

为验证河口村水库泄洪洞布置方案的合理性和优化的可能性，根据重力相似准则，采用1∶40的单体正态模型系统研究了泄洪洞泄流能力、水流流态、压力分布、空化空蚀、进出口体形等。尝试采用不同挑流鼻坎形式来消除2＃洞内起挑前跃后水流局部封顶现象，并提出有利于消能防冲的鼻坎形式。根据试验结果，1＃泄洪洞采用中墩修改体形能有效规避宽墩后水冠冲击洞顶的不利流态，同时2＃泄洪洞挑流鼻坎采用修改体形可有效解决起挑前跃后水流局部封顶现象。
위험증하구촌수고설홍동포치방안적합이성화우화적가능성，근거중력상사준칙，채용1∶40적단체정태모형계통연구료설홍동설류능력、수류류태、압력분포、공화공식、진출구체형등。상시채용불동도류비감형식래소제2＃동내기도전약후수류국부봉정현상，병제출유리우소능방충적비감형식。근거시험결과，1＃설홍동채용중돈수개체형능유효규피관돈후수관충격동정적불리류태，동시2＃설홍동도류비감채용수개체형가유효해결기도전약후수류국부봉정현상。
In order to verify the design layout rationality of flood discharging tunnel of Hekoucun Reservoir and possible optimization,based on the principle of gravity similarity,the scale 1∶40 normal single model was used to study the discharge capacity of the flood discharging tunnel,flow pattern,pressure distribution,cavitations and shapes of inlet and outlet. It tried to use different flip bucket form to eliminate the internal hydraulic jump after local cap flow phenomenon of No. 2 discharging tunnel and put forward a flip bucket to form of energy dissipa-tion. According to the test results,the modified No. 1 flood discharging tunnel can effectively avoid the adverse impact of the wide pier flow-ing water crown,meanwhile the No. 2 flood discharging tunnel flip bucket can effectively solve the phenomenon of local cap before the jump flow by using the modified type.