隧洞爆破地震波作用下临近水电站的安全性评估

发布时间：2018-04-24 11:31

本文选题：爆破震动 + 震动峰值　；参考：《爆破》2017年02期

【摘要】：为了评估隧洞爆破地震波作用下临近水电站的安全性,结合深溪沟水电站安装间灌浆排水廊道的掘进爆破开挖工程,利用TC-4850测震仪对临近发电厂房、机组及其他重点保护对象进行爆破震动监测。首先将实测数据进行震动波形、时能密度和震速峰值分析,然后采用一元回归方法分析爆破震动衰减规律,预测不同单响药量和不同爆心距下质点震动幅值,通过与国家爆破震动安全控制标准比较,评估爆破震动的安全性。研究结果表明:现场监测结果与回归分析的理论预测结果相吻合,隧洞爆破震动对临近水电站安全运营的影响较小,采用上述分析方法能够合理地评估隧洞爆破地震波作用下临近水电站的安全性。
[Abstract]:In order to evaluate the safety of the adjacent hydropower station under the action of blasting seismic wave of tunnel, combined with the excavation of grouting drainage corridor in the installation room of Shenxigou Hydropower Station, the TC-4850 seismograph was applied to the adjacent power plant building. Monitoring blasting vibration of units and other key protection objects. At first, the vibration waveform, time-energy density and peak value of seismic velocity are analyzed by the measured data, and then the attenuation law of blasting vibration is analyzed by using the univariate regression method, and the amplitude of particle vibration is predicted under different single shot quantity and different blasting center distance. The safety of blasting vibration is evaluated by comparing with the national blasting vibration safety control standard. The results show that the field monitoring results are in good agreement with the theoretical prediction results of regression analysis, and the impact of tunnel blasting vibration on the safe operation of nearby hydropower stations is relatively small. The above analysis method can reasonably evaluate the safety of adjacent hydropower stations under the action of blasting seismic waves.
【作者单位】：三峡大学水利与环境学院;武汉大学水利水电学院;
【基金】：国家自然科学基金项目(51609127) 湖北省自然科学基金项目(2016CFB238)
【分类号】：TV542;TV737

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