学士学位论文___水库溢洪道.doc

? 毕业设计说明书 题 目： 都兰县哇沿溢洪道设计 摘 要 哇沿水库在海西州都兰县境内，地理位置为东经98°15′、北纬36°10′。位于察汗乌苏河的中下游河段上，水库总库容为3337.9×104m3，库容在1.0～0.1亿m3之间，属于Ⅲ等中型工程。其永久性水工建筑物中的主要建筑物为3级，工程主要建筑物由土石坝、溢洪道、导流放水洞等组成。 溢洪道布置于坝址右岸的山口垭豁处，沿溢洪道地形地伏较小，溢洪道采用开敞式正槽溢洪道，堰顶高程3397.0m，堰长30m，最大下泄流量917m3/s。 正槽溢洪道水流平顺，泄流能力大，结构简单，运用安全可靠，是一种被广泛采用的岸边溢洪道形式。正槽溢洪道通常由进水渠、控制段、泄槽、消能防冲设施及尾水渠等部分组成，溢流堰轴线方向与泄槽轴线方向正交，过堰水流流向与泄槽轴线方向一致。 进水渠平面布置应使水流顺畅，避免断面突然变化和水流流向的急转弯。进水渠纵断面一般做成平底坡或不大的逆坡，为防止风化剥落，应适当进行衬砌。 由于哇沿水库为Ⅲ等中型工程，本次堰面类型采用实用堰。另外由于采用开敞式溢洪道，不需要设置闸门，所以单宽流量值比较大。 泄槽与消能防冲设施相连接，岸边溢洪道的主要落差就集中在这一段。斜槽底坡大于临界坡，所以称其为陡槽。由于地形、地质等原因，或为了减少开挖量，便于消能等，因此泄槽设置了收缩段、扩散段。另外泄槽段必须要进行边坡护理。 消能设施采用消力池消能，池深3m，长30m，宽20m。能够有效消减水流所产生的动能。 关键词：正槽溢洪道，进水渠，控制段，泄槽，消力池，尾水渠。 Abstract Wa Yan the reservoir in Dulan County, Haixi Prefecture, the geographical position is longitude 98 ° 15 , north latitude 36 ° 10. In the middle and lower reaches in Chahanwusu River, the total reservoir storage capacity is 3337.9 × 104m3, capacity of between 1 ~m3, belongs to III grade and medium engineering. The main buildings of the permanent hydraulic structures in 3, main building project by the dam, spillway, diversion of water hole. Spillway layout pass Wu Huo in dam on the right bank spillway, along the terrain and V is smaller, the open spillway spillway crest elevation, 3397.0m, weir length 30m, the maximum discharge of 917m3/s. Spillway flow is smooth, high discharge capacity, simple structure, safe and reliable to use, is a widely used form of spillway. Spillway usually consists of an intake channel, control segment, chute, facilities for energy dissipation and tail channel and other components, overflow weir axis direction and the axis perpendicular to the direction of the chute, the weir flow direction and chute axis direction. The intake channel layout should make water flow smoothly, avoid sharp turns section suddenly change and flow. The intake channel section is generally made of inverse slope flat slope or not, in order to prev