论文部分内容阅读
一、概述为充分利用平原地区灌溉回归水资源,常需在排涝河流上兴建梯级蓄水闸,以提高闸上游河槽水位,便于修建灌溉抽水站。为维持较稳定的蓄水位需经常调节闸门开度以宣泄多余水量。上游地区降雨较大时,还应及时开启闸门排泄涝水。日常的管理工作十分繁重,而管理工作的失误,则会直接影响到上游地区的排涝和灌溉,损失较大。根据以上情况,设计适用的水力自动闸门就显得十分必要。自动闸门除应充分满足其使用功能的要求以外,设计时必须注意到平原地区河流的以下特点:1.蓄水期间,闸下水位受下游区间来水量或潮汛的影响,变幅可能较大。2.为避免影响上游地区排涝,闸孔一般均与
I. Overview In order to make full use of irrigation water resources in plain areas, it is often necessary to build cascade sluices on drainage rivers to increase the water level in the upper reaches of the gates and to facilitate the construction of irrigation pumping stations. In order to maintain a more stable water level, the opening of the gate should be adjusted regularly to release excess water. Rainfall in the upper reaches of the larger area, it should promptly open the floodgates gate discharge. Routine management is very heavy, and management errors, it will directly affect the drainage and irrigation in the upper reaches of the area, a greater loss. According to the above situation, it is very necessary to design a suitable hydraulic automatic gate. In addition to fully meet the requirements of its automatic gate function, the design must take note of the following characteristics of the rivers in the plain area: 1. During the storage period, the water level under the gate may be affected by the water quantity or tidal current in the downstream section, and the amplitude may be larger. 2. In order to avoid affecting the drainage area in the upstream area, the gates are generally closed