跌坎型底流消能工混凝土底板冲磨破坏机理分析.PDF

35 1 () http: / /www. kustjourna.l com / V ol 35 N o1 20 10 2 Journal ofK unm ing U n iversity of Sc ience and T echnology ( Sc ience and T echnology) Feb 20 10 do:i 10 3969 / j issn 1007- 855x 2010 01 015 1 1 1 2 张闻辉 , 王海军, 郑 雪 , 钟志镭 ( 1 , 650051; 2 , 65005 1) : 通过跌坎型底流消能工水力学试验和理论分析, 研究了跌坎型底流消力池内底滚回流区 冲击区附 射流区水力特性及混凝土底板破坏机理, 分析底板冲磨破坏类型分为大角度和小角 度冲磨, 并且分析比较了 3 个区域内临底流速之间的关系, 得出临底流速的计算公式 : 消力池; 水力特性; 破坏机理; 脉动压力 : TV 135 2 : A : 1007- 855X ( 2010) 01- 0074 - 05 Erosion and DestroyM echanism of Concrete Baseplate in Step- down Ener y Dissipater 1 1 1 2 ZHA NG W en-hu i, W A NG Ha -i jun , ZHENG X ue , Z HONG Zh-i le i ( 1 F acu lty o f E lec tric P ow er Eng inee ring, K unm ing U niversity of Science and T echno logy, Kunm ing 650051, Ch ina; 2 K unm ing Eng ineering Co rporation, H ydroCh ina, K unm ing 65005 1, Ch ina) Abstract: Through m ech an ical test and theoret ical research, the hydrau lic characterist ics o f the flow near the floor of ro ll reflux, mi pact and w all jet reg ion s in the step - down energy dissip ater are m ade clear T he erosion and destroy m ech an ism o f the concrete b asep la te are stu died T he erosion and destroy is c lassified into large an- gle and sm all angle typ es T he relat ionship bewt een the velocit ies of the flow near the f loor in three d ifferent are- as is also analyzed A form ula to ca lculate the velocity of the flow near the floor is finally put forw ard K ey words: st illing b asin; hydraulic characterist ic; destroy m ech anism; flu ctuat ing pressure 0 , , , , , , , , 2 , , 3 1 , , ,