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Simulation of earthquake effects on underground excavations using Discontinuous Deformation Analysis (DDA)

机译:使用不连续变形分析(DDA)模拟地震对地下基坑的影响

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In seismic prone regions, consideration of earthquake effects is an important aspect in designing underground civil structures, storage, and power stations. Also, potential earthquake effects on stability of underground openings that will be used for disposal of high-level waste in a geologic repository may have performance implications. The Discontinuous Deformation Analysis (DDA) computer code is extended to model earthquake effects on underground excavations in jointed rock media. In addition, the effects of uncertainties in rock joint characterization are incorporated in the analysis. The analysis results indicate that DDA is appropriate for analyzing stability of underground excavations subjected to earthquakes taking into account the uncertainties in rock joint data.
机译:在地震多发地区,考虑地震影响是设计地下土木结构,仓库和发电站的重要方面。此外,地震对地下洞室稳定性的潜在影响(将用于处置地质处置库中的高放废物)可能会对性能产生影响。扩展了不连续变形分析(DDA)计算机代码,以模拟地震对节理岩石介质中地下开挖的影响。此外,分析中还考虑了不确定性对岩石节特征的影响。分析结果表明,考虑到岩石缝数据的不确定性,DDA适用于分析地震引起的地下基坑的稳定性。

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