并联输水箱涵检修操作过程中的水力仿真及瞬变控制  

Hydraulic control of long distance water diversion box culvert with multiple opening in the process of gate operation for overhaul

作　　者：穆祥鹏[1] 练继建[1] 赵威[2] 

机构地区：[1]天津大学建筑工程学院,天津300072 [2]西安交通大学电气学院,陕西西安710049

出　　处：《水利学报》2008年第4期448-453,共6页Journal of Hydraulic Engineering

基　　金：国家杰出青年科学基金(50725929);国家自然科学基金(50538060,50679052)

摘　　要：长距离输水箱涵在检修操作过程中常会出现剧烈的水力皮动,检修井后接的箱涵往往出现局部脱空的情况。本文通过建立长距离并联输水箱涵单孔检修的非恒定流数学模型,对检修操作过程中的水力过渡过程进行了模拟。在对检修操作时通过检修闸的流量过程线进行分析的基础上,对检修闸分两段关闭的操作方式进行了优化。并针对工程的实际条件,提出通过在检修井后设置补水孔,利用非检修箱涵向检修箱涵补水,对并联输水箱涵单孔检修所引发的瞬变流进行控制,最后在水力仿真的基础上对补水孔的面积进行了优化。Severe hydraulic fluctuation always happen to long distance pressurized multi-opening water diversion box culvert in the process of gate operation for overhaul, and local vacuum problem may occur to the culvert or conduit downstrean of the inspection well consequently. A mathematical model for simulating the unsteady flow in this kind of culvert in the operation process of one gate for overhaul is established. On the basis of the analysis on the discharge variation in the period of gate operation an optimized scheme of operation is proposed. It is suggested that openings designed on the wall down stream of inspection wells for connecting the adjacent culvert will play important role to replenish the water from the adjacent opening and mitigate the fluctuation of transient flow. The area of opening must be optimized according to the hydraulic simulation.

关 键 词：长距离并联输水箱涵 检修 补水孔 水力瞬变控制 

分 类 号：TV315[水利工程—水工结构工程]