【正文】
d threat to the downstream, on the other hand do detention repair dry, with abundant fill a vacancy, for irrigation, water supply, power generation, aquaculture and other conditions. Generally consists of the dam, reservoir spillway on the water or flood discharge tunnel, culvert, , the general explanation for detention storage and regulating the flow of the water conservancy project building, can use for irrigation, power generation, flood control, and fish. It refers to the valley or river at the throat to build a dam formed by artificial lake. After the pletion of the reservoir, it can flood control, water irrigation, water supply, power generation, fish farming, and so on. Natural lakes are sometimes referred to as the reservoir (natural reservoir). Usually according to the capacity of reservoir scale size classification, divided into small, medium, large, etc.Key words: Reservoir。 Dam 1 Basic knowledge of the reservoir1 .1Reservoir and the main building Reservoir flood control standardAccording to the ministry of water resources, the department of energy39。t play, and it will endanger the safety of the downstream. As a result, the design, construction, management must be resolutely carry out this basic principles to ensure dam safety.Dam type many, according to the high dam and pattern classification is as follows:(a), in accordance with the dam height were classified:Can be divided into three classes of low dam, zhongba, high dam, dam is less than 30 meters : dam for 3070 meters high dam, dam in 70 meters reservoirs is generally low dam.(2), according to the type of classification:Can be divided into earth dam and gravity dam and arch dam, buttress dam, etc. My county on small reservoirs are earth and rockfill dam is a kind of local material dam, which is posed of earth, stone, or the generation by rolling into a water retaining structure, the dam type is widely