黄土地震滑坡形成机理研究的若干进展

Research Progress in Formation Mechanism of Loess Coseismic Landslides

地震滑坡是黄土高原较为严重的一种地震地质灾害。在简要回顾黄土高原历史特大地震诱发黄土滑坡灾害特点的基础上,从地震强度、断裂构造、地形地貌、地层岩性、土层结构以及水文地质条件等6方面归纳了黄土地震滑坡的影响因素和发育特征,总结了液化型、剪切型以及震陷型等3种黄土地震滑坡形成机理的研究进展,探讨了黄土与非黄土地震滑坡形成机理间的异同,给出了进一步开展地震黄土滑坡形成机理研究的建议。

Seismic landslide is a serious earthquake and geological disaster in the Loess Plateau. Based on a brief review of the characteristics of loess landslides induced by historical earthquakes in the Loess Plateau,we summarized the influencing factors and development characteristics of loess earthquake landslides from six aspects: earthquake intensity, fault structure,topography,stratum lithology,soil structure and hydrogeological conditions,and the research progress of the formation mechanism of the three types of loess seismic landslides,such as liquefaction type,shear type and seismic subsidence type.Then we discussed the similarities and differences between the formation mechanism of loess and non-loess landslides,and proposed suggestions for further research on the formation mechanism of seismic loess landslides.