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Study on determination of loess seismic subsidence based on several physical parameters
Author(s): XU Shunhua1, 2, WANG Lanmin1, 2, SUN Junjie1, 2
Pages: 90-
93
Year: 2010
Issue:
S1
Journal: World Earthquake Engineering
Keyword: 黄土; 震陷; 含水量; 孔隙比; 埋藏深度;
Abstract: 依据试验数据,研究了含水量、孔隙比和埋藏深度对黄土震陷性的影响规律,结果显示,黄土震陷临界含水量随着动应力的增加而减小,浅层黄土较深层黄土水敏性更强,在50~80kPa之间,临界含水量有一个急剧下降的特征;在典型黄土地区,黄土的孔隙比小于一定数值(宝鸡地区0.73、兰州地区0.86)时,震陷不会发生;在天然含水量情况下,黄土震陷深度曲线随动应力的增加经历了一个从平稳、快速、再收敛至最大震陷深度的发展过程。
Citations