坪头水电站2#泄洪闸基础处理设计方案的优化与安全性论证  

Argumentation for the Optimization and Safety of the Design Scheme of Foundation Treatment on No.2 Flood Discharge Sluice in Pingtou Hydropower Station

作　　者：田启文[1,2] 靳孟贵[1] 张敬[2] 庞明亮[2] 

机构地区：[1]中国地质大学环境学院,湖北武汉430074 [2]中国电建集团成都勘测设计研究院有限公司,四川成都610072

出　　处：《安全与环境工程》2014年第3期159-164,共6页Safety and Environmental Engineering

基　　金：国家自然科学基金项目(41172218)

摘　　要：为了能及时、有效地解决坪头水电站首部枢纽基础开挖时,工期紧以及2#泄洪闸基础土体开挖至原设计建基面高程时不能满足设计要求的问题,本文通过相关的勘探和试验工作,确定了2#泄洪闸建基面高程,并采取了挖除、回填素混凝土换基的优化处理措施来保证2#泄洪闸闸室的安全。经过计算分析,处理后的2#泄洪闸基底应力、抗滑稳定安全系数、抗浮稳定安全系数、地基最大沉降量等均能满足规范的要求,从而确保了2#泄洪闸闸室的安全和工程整体施工的工期。This paper makes and applies some optimal tr relevant eatments lations show that the stress, and maximum specifications, idence h ensu res exploration and test work to determine the elevation of base surface such as excavation and base backfill by concreate. The results of calcuanti-slide stability safety coefficient, ant the foundation of No. 2 flood discharge the safety of No. 2 flood discharge sluice i-floating stability safety coefficient sluice all meet the requirements of chamber and the schedule of the overall project.

关 键 词：水电站泄洪闸 基础处理 换土法 优化设计 安全性论证 

分 类 号：TV223[水利工程—水工结构工程] TV7