新丰江水库大坝贯穿裂缝及其稳定性分析
发布时间：2018-10-18 11:46
【摘要】：1962年3月19日新丰江水库大坝附近发生MS 6.1级强烈地震后,13—17#坝段在108.5m高程处出现了长达82m的贯穿裂缝,导致水库渗漏,其后虽进行了加固处理,但经过50多年的运营,贯穿裂缝的现状如何,备受各级政府及专家学者的关注。本文利用近些年大坝上的多次小震观测记录,通过对有无贯穿裂缝坝段的地震加速度时程傅氏谱及上下坝体传递函数的对比分析,对14#坝段的整体性和稳定性进行了系统研究。结果表明,到目前为止,大坝贯穿裂缝没有明显恶化,但整体性依然较差,仍然是大坝稳定性的最大隐患。
[Abstract]:After the strong earthquake of MS M = 6.1 near the dam of Xinfengjiang Reservoir on March 19, 1962, the dam section of 13-17 # appeared as long as 82 m crack at 108.5 m elevation, which resulted in the leakage of the reservoir. After reinforcement treatment, the dam section was operated for more than 50 years. The current situation of penetrating cracks is concerned by governments at all levels and experts and scholars. Based on the observation records of several small earthquakes on the dam in recent years, this paper makes a systematic study on the integrity and stability of the dam section 14 # by comparing and analyzing the time-history Fourier spectrum of seismic acceleration and the transfer function of the upper and lower dam bodies. The results show that, up to now, there is no obvious deterioration of the dam through cracks, but the integrity is still poor, which is still the biggest hidden danger to the stability of the dam.
【作者单位】： 广东省地震局;中国地震局地震监测与减灾技术重点实验室;广东省地震预警与重大工程安全诊断重点实验室;防灾科技学院;
【基金】：中国地震局地震监测与减灾技术重点实验室、广东省地震预警与重大工程安全诊断重点实验室建设项目(2011A060901006) 广东省重大科技专项项目(2012A 080102008) 地震科技星火计划(XH16031) 中央高校基本科研业务费(ZY20150312)共同资助
【分类号】：TV698
本文编号：2279031
[Abstract]:After the strong earthquake of MS M = 6.1 near the dam of Xinfengjiang Reservoir on March 19, 1962, the dam section of 13-17 # appeared as long as 82 m crack at 108.5 m elevation, which resulted in the leakage of the reservoir. After reinforcement treatment, the dam section was operated for more than 50 years. The current situation of penetrating cracks is concerned by governments at all levels and experts and scholars. Based on the observation records of several small earthquakes on the dam in recent years, this paper makes a systematic study on the integrity and stability of the dam section 14 # by comparing and analyzing the time-history Fourier spectrum of seismic acceleration and the transfer function of the upper and lower dam bodies. The results show that, up to now, there is no obvious deterioration of the dam through cracks, but the integrity is still poor, which is still the biggest hidden danger to the stability of the dam.
【作者单位】： 广东省地震局;中国地震局地震监测与减灾技术重点实验室;广东省地震预警与重大工程安全诊断重点实验室;防灾科技学院;
【基金】：中国地震局地震监测与减灾技术重点实验室、广东省地震预警与重大工程安全诊断重点实验室建设项目(2011A060901006) 广东省重大科技专项项目(2012A 080102008) 地震科技星火计划(XH16031) 中央高校基本科研业务费(ZY20150312)共同资助
【分类号】：TV698
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，本文编号：2279031
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