招徕河拱坝取消导流底孔的可行性分析  

Analysis on Feasibility of Cancelling Diversion Bottom Outlet of Zhaolaihe Arch Dam

作　　者：万志刚[1] 李海涛[1] 

机构地区：[1]湖北省水利水电勘测设计院,湖北武汉430070

出　　处：《湖北水力发电》2004年第4期51-54,共4页Hubei Water Power

摘　　要：招徕河大坝坝身导流底孔是坝体施工期辅助泄洪临时建筑物 ,但导流底孔的设置将占用碾压混凝土施工期1～ 1.5个月 ,且是非常宝贵的低温季节 ,对工程总进度和混凝土施工不利。通过对洪水机率、渡汛期间导流隧洞的过流能力和最大流速以及大坝安全等方面的分析 ,认为取消大坝临时导流底孔在技术上是可行的 ,同时可以减少工程投资、缩短工期。In the technical design, a bottom outlet laid in the dam body is considered as the structure of supple-mentary diversion for temporary flood discharge during construction. The construction of bottom outlet will spend 1～1.5 month in low temperature season, a valuable chance for RCC construction. Through the analysis on flood frequency of Zhaolai river, the discharge capacity and maximum velocity passing through the diversion tunnel, and the safety protection of arch dam over flood season, it is evident that canceling the bottom outlet is feasible and is advantageous to reduce engineering expense and quicken construction progress.

关 键 词：招徕河水电站 施工渡汛 坝身导流底孔 

分 类 号：TV7[水利工程—水利水电工程]