爆破模拟近场地震下顺层岩质边坡稳定性试验的理论研究

Theoretical Research on Stability Experiment of Bedding Rock Slope Under Near-field Earthquake by Blasting Simulation

基于相似理论分析,探讨运用小尺度模型试验、用爆破模拟近场地震的方法考察顺层岩质边坡破坏的可行性。通过量纲分析发现,在模型试验设计中,通过控制模型大小来满足几何、形状参数缩比;通过选用相似材料,来控制波速比,密度比,进而从载荷、物性及形状上满足相似比关系,从理论上可实现爆破对近场高烈度地震的模拟。

Based on similarity theory,the feasibility of using small-scale blasting experiment to simulate the breakage of bedding rock slope under near-field earthquake is discussed.The dimensional analysis shows that the simulation can be achieved by controlling the size of the model to meet the geometry scale and shape parameters,and selecting similar material to satify the density ratio and velocity ratio,and further meet the similar ratio relations from loads,the physical properties and shape.Then,the simulation of the blasting on high intensity near-field earthquake can be realized theoretically.