孤石滩水库溢洪道进口基础处理方案设计  

Design of Foundation Treatment Scheme for the Spillway Inlet of Gushitan Reservoir

作　　者：李刚 张艺 韩斌 LI Gang;ZHANG Yi;HAN Bin(Pingdingshan Gushitan Reservoir Operation Support Center,Pingdingshan 467233,China;Henan Water Resources Survey,Design and Research Co.LTD.,Zhengzhou 450000,China)

机构地区：[1]平顶山市孤石滩水库运行保障中心,河南平顶山467233 [2]河南省水利勘测设计研究有限公司,河南郑州450000

出　　处：《河南水利与南水北调》2024年第8期62-63,共2页Henan Water Resources & South-to-North Water Diversion

摘　　要：孤石滩水库溢洪道进口为坝肩式溢洪道,加固前水库存在坝顶高程不满足规范要求,防洪能力不足,溢洪道闸底板不均匀沉降等结构问题,经过方案比选,采用了大坝不加高新建溢洪道方案。溢洪道施工时,进口左岸圆弧翼墙基础基岩面埋藏较深,经过论证,分别采取了高压旋喷桩法复合地基和抛石等方案进行处理,处理后,挡墙稳定,承载力满足要求。The inlet of the spillway of Gushitan Reservoir is a dam abutment spillway.Before reinforcement,the dam crest elevation was in compliance with the specification requirements,while the flood control capacity was inadiquate,and the settlement of the spillway sluice bed was uneven.After alternatives comparison,the scheme of building a spillway without heightening the dam crest was adopted.During the construction of the spillway,considering that the foundation rock surface of the circular arc wing wall on the left bank of the inlet was buried deep,high-pressure rotary jet grouting pile composite foundation and riprap protection were adopted.After treatment,the retaining wall stabilized and the bearing capacity satisfied the requirements.

关 键 词：水库 溢洪道工程 基础处理 方案设计 

分 类 号：TV223[水利工程—水工结构工程]