土坝加固效果分析  

An analysis of the solid dam reinforcement

作　　者：武科[1] 马秀媛[1] 尚蕾[2] 

机构地区：[1]山东大学土建与水利学院岩土与结构工程研究中心,山东济南250061 [2]山东省政法管理干部学院司法信息系,山东济南250014

出　　处：《山东大学学报（工学版）》2004年第2期80-83,共4页Journal of Shandong University（Engineering Science）

摘　　要：根据广东某水库土坝劈裂灌浆加固的实际情况 ,用有限差分方法分别对坝体灌浆前后的应力应变状态进行了数值模拟分析 .分析结果表明灌浆后坝体的塑性区得到了改善 ,坝体应力得到调整 ,坝体加固效果比较明显 .但分析结果同时也表明 ,在灌浆帷幕范围内坝体的湿陷位移量较大 ,与坝体其它土区易形成位移差 ,这有可能造成坝体坡面上产生裂缝 ,需进行特殊处理 .According to the practical splitting grouting conditions of one dam in Guangdong province, the stress and strain states of the dam before and after grouting were analyzed by using the finite difference method. The simulation results showed that the plastic zone state of the grouted dam had been improved greatly, the stress state had been adjusted with remarkable reinforcing effect. However, larger collapsible displacements developed in the grouting curtain region, leading to displacement difference to the other region, which probably leads to cracks on the slope surface of the embankment and therefore needs mending.

关 键 词：劈裂灌浆 塑性区 有限差分法 

分 类 号：TV641[水利工程—水利水电工程]