论文部分内容阅读
佛子岭连拱坝已运行４０多年，由于坝体杆件单薄，坝基地质条件较复杂，坝体出现较多裂缝。虽经二次加固，但旧裂缝仍在扩展并有新裂缝产生，尤其在１９９３年１１月下旬，河床坝垛的水平位移超过历史最大值。为此，电力工业部提出对佛子岭大坝进行特种检查。通过对佛子岭大坝的观测资料全面分析，弄清了１９９３年１１月下旬出现“异常”变形的物理成因，并由此引出该坝稳定、变形和强度（即裂缝）的不利荷载工况，提出了运行控制水位。
The Foziling Multi-arch Dam has been in operation for more than 40 years. Due to the thinness of the dam members and the complex geological conditions in the dam foundation, more fractures occur in the dam body. Despite the secondary reinforcement, the old cracks are still expanding and new cracks are produced. Especially in late November 1993, the horizontal displacement of the riverbed dam stack exceeds the historical maximum. To this end, the Ministry of Power Industry made a special inspection of Foziling Dam. Through the comprehensive analysis of the observation data of the Foziling Dam, the physical causes of the “abnormal” deformation in late November 1993 have been clarified and lead to the unfavorable loading conditions of the stability, deformation and strength (ie, cracks) of the dam , Proposed to run the control water level.