高拱坝安全度评价研究

High Arch Dam Safety Evaluation

概述了高拱坝安全度研究的强度理论、稳定性理论、可靠度理论、损伤断裂理论以及数值模拟分析、地质力学模型试验、监测数据反分析等主要理论和方法的最新进展;分析了各自的局限性和进一步研究的困难;提出和分析加强材料破坏到结构失稳破坏机理研究,探索坝身、坝肩、坝基三位一体分析方法,建立高拱坝整体失稳判据,运用微波探测技术、光测技术对运行中的高拱坝进行安全监测等急待解决的问题。

This paper summarizes the latest progress in such major theories and approaches used in the high arch dam safety research as the strength theory, the stability theory, the reliability theory, the damage and fracture theory, the numerical simulation analysis, the geomechanical model test, and the monitoring data reverse analysis. Respective limitations and difficulties for further research are analyzed. Such urgent issues are proposed as strengthening the research on the mechanism of fracture from materials damage to buckling, exploring trinitarian analytical process of the dan-body, dam-abutment and dam foundation, establishing criterions of high arch dam integral buckling, and conducting safety monitoring to the high arch dam in operation by means of microwave detecting and optical measurement.