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为了解决岩石工程相似模型实验中传统相似材料难以模拟深部软岩低强度、大变形和强流变的问题,本文选用70#沥青(产量大、成本低、粘弹性、易成型、易软化等)和海砂作为深部软岩的相似模拟材料。采用连续加压法对其进行了单轴压缩实验,对不同配比下试件的密度、抗压强度及初始弹性模量进行分析,得到了该相似材料有关的原始数据和规律。本文初步验证了使用该相似材料模拟深部软岩的可行性,并针对不足之处给出一些合理改进建议,为进一步模型模拟实验提供指导。
In order to solve the problem that it is difficult to simulate the low strength, large deformation and strong rheology of deep soft rock in the similar model experiment of rock engineering, 70 # asphalt (large yield, low cost, viscoelasticity, easy forming, easy softening, etc.) And sea sand as similar simulations of deep soft rocks. Uniaxial compression experiments were carried out by continuous pressurization method. The density, compressive strength and initial elastic modulus of specimens under different ratios were analyzed, and the original data and laws related to the similar materials were obtained. This paper validates the feasibility of using this similar material to simulate deep soft rock, and gives some reasonable suggestions for the shortcomings, which will provide guidance for further model simulation experiments.