河道型水库进水口引渠布置的试验研究  

Experimental Study on Layout of Approach Channels to Intake of River type Reservoirs

作　　者：张芹芬[1] 索丽生[1] 胡明[1] 

机构地区：[1]河海大学水利水电工程学院

出　　处：《河海大学学报（自然科学版）》1998年第3期66-70,共5页Journal of Hohai University(Natural Sciences)

摘　　要：通过河道型水库进水口引渠的模型试验，研究了引渠方向、长度、深度、两侧收缩角的不对称程度以及河道流速、水位等参数对进水口流态的影响．试验结果表明：引渠及进水口布置设计应综合考虑上述参数的影响，一般引渠要有足够的水深，长度与进口宽度之比为３．０～４．０，与河岸夹角θ在５５°～７５°范围内选取，两侧收缩角尽量对称时有利于改善进口流态及流速分布的均匀性．Hydraulic model experiments of the approach channel to the intake of river type reservoirs are described.The effects of parameters,such as the orientation,length,depth,side￣converging angles of the channel,and the flow velocity and water level of the reservoir,on the velocity distribution at the entrance section are discussed.The test data show that these parameters should be considered synthetically in the design of approach channels and intakes.Under normal conditions,the water depth should be sufficient,the ratio of the channel length to the entrance width should range between 3.0 and 4.0,the angle between the channel and the river bank should be 55°to 75°, and the angle of contraction on both side should be symmetric so as to improve the flow pattern and the velocity distribution at the entrance.

关 键 词：水库 进水口 引渠 流速分布 试验 引水式水电站 

分 类 号：TV747.321[水利工程—水利水电工程]