某热电厂尾矿库坝体变形监测与成因分析

Deformation monitoring for tailings dam of a thermal power plant and its cause analysis

介绍了尾矿库大坝变形观测网的布设及监测工作。通过对尾矿库坝体变形观测网两期观测资料的平差计算,进行了监测资料处理和精度分析,编制了变形数值表和绘制观测点的变形值情况图,对尾矿库坝进行形变成因分析。监测成果分析表明:坝体水平位移处于相对稳定状态,不均匀沉降是坝体产生裂缝的原因,局部有下滑的趋势。提出了尾矿库大坝安全运行的建议。

We introduce the layout of deformation observation networks and the monitoring work for a railings dam. According to the adjustment calculation of deformation observation data of the railings dam in 2 observation periods, we processed the moni- toring data and analyzed its accuracy. Furthermore, we compiled the deformation data tables and draw deformation graph of obser- vation points to analyze the deformation causes of the tailings dam. The analysis results show that the horizontal displacement of the dam is relatively stable and the uneven settlement is the main cause of crack, some part of dam body has downward sliding trend. Some suggestions on safety operation of the railings darn are put forward.