三峡工程导流底孔设计研究  

Design of Bottom Diversion Outlets

作　　者：刘宁 胡进华[2] 

机构地区：[1]长江水利委员会,湖北省武汉市430010 [2]长江水利委员会设计院枢纽处,湖北省武汉市430010

出　　处：《中国三峡建设》1997年第8期5-7,共3页China Three Gorges Construction

摘　　要：三峡工程导流底孔跨缝布置于泄洪坝段共22个，主要承担三期施工导流任务，并在三期围堰挡水发电期间，与泄洪深孔联合泄洪。导流底孔运用3年后封堵，并回填。导流底孔布置上受控因素多，运用条件变化大，孔口作用水头高结构受力复杂。因此对导流底孔的水力设计，结构设计，防泥沙磨损措施和封堵与回填等问题进行了研究。The 22 bottom diversion outlets arranged over joints of the spillway sections willmainly be used for the river diversion during the third -stage construction period and used forflood discharging together with the low -level outlets during the period of power generation bythe third - stage cofferdams. After 3 years' operation the bottom diversion outlets will be blocked and backfilled. Due to a large number of control factors in their layout, changes in operationconditions and complex structural forces exerted by high water head over the outlets, an extensive research has been conducted on hydraulic design, structural design, measures against sediment abrasion, and blocking and backfilling.

关 键 词：三峡工程 导流底孔 底孔导流 

分 类 号：TV551.13[水利工程—水利水电工程]