CAJ | 학술논문

针对重力流输水工程管线高程起伏和管道水锤造成的内水压力变化问题，结合多支线输水系统的相继开阀、同时关阀和爆管等复杂运行工况，对多种水锤防护措施的设置位置和原则进行了分析。分析表明：可以在管线上游的高点设置双向调压塔来控制管道的负压和缓解过高正压，在中下游的支线分水口或者局部高点设置单向塔来隔断支线爆管引起的瞬时压降和消减断流弥合水锤，在靠近管线末端的较高点设置空气阀来防止负压，在数值仿真计算得到的内水压力过高处设置超压泄压阀来防止超过管道承压标准的正压。
침대중력류수수공정관선고정기복화관도수추조성적내수압력변화문제，결합다지선수수계통적상계개벌、동시관벌화폭관등복잡운행공황，대다충수추방호조시적설치위치화원칙진행료분석。분석표명：가이재관선상유적고점설치쌍향조압탑래공제관도적부압화완해과고정압，재중하유적지선분수구혹자국부고점설치단향탑래격단지선폭관인기적순시압강화소감단류미합수추，재고근관선말단적교고점설치공기벌래방지부압，재수치방진계산득도적내수압력과고처설치초압설압벌래방지초과관도승압표준적정압。
In the paper,in order to solve the problem of pipeline water pressure caused by pipeline elevation difference and water hammer in long distance water gravitational transportation project,combined with the complex operating conditions of multiple branch system,setting positions and principles of several water hammer protection measures were analyzed. The paper concludes that surge tank can be arranged on the upstream high point so as to control negative pressure and high pressure,one-way surge tank can be arranged on the cross point in midstream and downstream so as to cut off instantaneous pressure drop wave caused by pipeline branch explosion,air valve can be arranged on the pipeline ends high point to pre-vent negative pressure,over-pressure relief valve can be arranged on the point of the highest pressure obtained by calculation to prevent over-stand-ard high pressure.