高落差截流工程的进展及其工程措施  

Development and Engineering Measures of High Drop River Closure Works

作　　者：陈忠儒[1] 陈义东[1] 陈义武[1] 

机构地区：[1]长江科学院,湖北武汉430010

出　　处：《水电站设计》2003年第1期64-69,102,共7页Design of Hydroelectric Power Station

摘　　要：叙述了国内外河道高落差截流工程的进展情况。在龙口进占中,根据抛投块体的稳定理论对水力参数的计算可找到截流的困难段。立堵截流在运用伊兹巴什公式计算中,式中的稳定系数K考虑了戗堤端头坡度、河床底面糙度、石块、混凝土块以及单体、串体的影响。在减轻高落差截流难度方面,可通过对龙口范围采用石渣料、拦石坎、预抛填底保护,以及拦石栅辅以多戗、平堵等解决。并列举了典型工程实例。Development of high drop river closure work in China and abroad is elaborated in this paper.During closing closure gap,difficult closure section can be found out by hydraulic parameters calculation based on stability theory of dumped blocks.In the formula offered by С.В.Изъащ,influences of closure dike end slope,roughness of river bed,rock blocks,concrete blocks and chain linked blocks are considered in determining the stability coefficient K.In order to reduce difficulties in high drop river closure,in the closure gap rock blocks,rock detaining sill,predumped bed protection blocks,rock detaining grid,multiple closure dikes and horizontal closure can be used.Typical projects as examples are also listed in the paper.

关 键 词：截流 立堵法截流 水力计算 稳定计算 

分 类 号：TV551.2[水利工程—水利水电工程]