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实验室振动台模拟试验是研究地震滑坡的手段之一。本文选取1933年岷江上游叠溪地震诱发各类滑坡中的两种(岩质顺层滑坡和深覆盖层孔隙水压力激增型滑坡)为例,借助水平加垂直双向振动模拟试验台,进行地震滑坡的振动台模拟试验。以此分析和探讨各种斜坡在地震力的作用下的变形破坏的规律和机制,并以此验证前人所建数值模型和计算模型的正确性。斜坡模型的建立是在对叠溪地震进行详细的分区分带研究,对叠溪地震形成演化机制的深入探讨后建立起来的,具有较强的针对性和模拟性。
Laboratory shaking table simulation test is one of the means to study the earthquake landslide. In this paper, taking two types of landslides (bedding rock landslide and pore water pressure surge landslide with deep overburden) induced by Diexi earthquake in the upper reaches of Minjiang River in 1933 as an example, with the help of horizontal and vertical two-way vibration simulation test rig, Shaking table simulation test. Based on this, the regularity and mechanism of deformation and failure of various slopes under the action of seismic force are analyzed and discussed, and the correctness of numerical model and calculation model built by predecessors is verified. The establishment of the slope model is based on the detailed zoning study of the Diexi earthquake and the establishment of the Diexi earthquake formation and evolution mechanism. It has strong pertinence and simulacrum.