三板溪主坝面板破损前后应变应力分析  

Analysis on stress and strain before and after the face-slab damage of Sanbanxi dam

作　　者：朱锦杰[1] 李涛[1] 杜雪珍[1] 

机构地区：[1]国家电力监管委员会大坝安全监察中心,浙江杭州310014

出　　处：《大坝与安全》2009年第6期46-48,共3页Dam & Safety

摘　　要：通过分析三板溪主坝面板应变应力监测资料,发现一、二期面板压应力很大,分期浇筑接缝处承受8～15 MPa的压应力,在蓄水期水位快速上升过程中,面板挤压破损,需降低水位检查修补,影响工程安全和效益。面板修补后虽取得了一定效果,但面板高压应力的情况仍存在,应加强监测和现场巡查,密切关注渗漏量等的变化,保证大坝的安全运行。By analysis on the monitoring data of face-slab stress and strain,huge compressive stress was found on the face-slab,and the compressive stress at the joints was 8～15 MPa.In the process of storage water level rising,face-slab damage happened which exerted bad influence on the safety and profit of the project.Although rehabilitation,high compressive stress didn t disap-pear which called for closer monitoring.Only in this way,dam safety can be guaranteed.

关 键 词：三板溪主坝 面板 挤压破损 应变应力 分析 

分 类 号：TV698.1[水利工程—水利水电工程]