水库大坝垂直位移统计模型及变形分析——以白莲崖水库大坝为例  

Statistical Model and Deformation Analysis of Vertical Displacement of Reservoir Dam--A Case Study of Bailianya Reservoir Dam

作　　者：刘先春[1] LIU Xianchun

机构地区：[1]安徽水利水电职业技术学院总务处,安徽合肥231603

出　　处：《安徽职业技术学院学报》2023年第3期23-28,72,共7页Journal of Anhui Vocational & Technical College

摘　　要：白莲崖水库最大坝高104.6 m,是安徽省唯一一座百米高坝。采用典型小概率法原理对大坝的水平位移和垂直位移的监控指标进行分析,综合评价大坝安全监测系统工作状态,提出运行管理监测建议。分析得出坝体垂直位移主要受温度、水压变化及时效的影响:温度是影响坝体垂直位移的主要因素,尤其对河床测点;水压分量对坝体垂直位移有影响,对靠近两岸的坝块有显著影响;时效分量对垂直位移影响较小,对岸坡测点垂直位移的影响相对于其它部位测点要大。总体而言,垂直位移变化规律基本正常。The Bailianya Reservoir has a maximum dam height of 104.6 meters and is the only one in Anhui Province with a height over 100 meters.The paper analyzes the monitoring indicators of horizontal and vertical displacement of the dam using the principle of typical small probability method,comprehensive⁃ly evaluates the working status of the dam safety monitoring system,and proposes operational management monitoring suggestions.The analysis shows that the vertical displacement of the dam body is mainly affected by changes in temperature,water pressure,and aging:temperature is the main factor affecting the vertical dis⁃placement of the dam body,especially for the riverbed measurement points;the water pressure component has an impact on the vertical displacement of the dam body,and has a significant impact on the dam blocks near both banks;the effect of the time-dependent component on vertical displacement is relatively small,and the impact on the vertical displacement of the monitoring points on the bank slope is greater than that of other monitoring points.Overall,the vertical displacement variation pattern is basically normal.

关 键 词：水库大坝 垂直位移 变形 分析 

分 类 号：TV642.2[水利工程—水利水电工程]