物理相似模型试验是滑坡灾害稳定性分析的常用方法，而相似材料特性是影响试验可行性的重要因素。以青岛市崂山风景区返岭前滑坡为研究背景，为配制适用于全风化花岗岩滑坡模型试验的相似材料，开展了相似材料特性研究。首先，以沙重比、双飞粉含量、膨润土含量和黏土含量作为影响因素，基于控制变量方法配制16组全风化花岗岩滑坡相似材料，在此基础上开展室内试验。利用极差和标准差进行相似材料的黏聚力、内摩擦角、渗透系数和抗压强度的敏感性分析。结果表明：黏聚力的主要影响因素是黏土和双飞粉含量，内摩擦角的主要影响因素是黏土含量，单轴抗压强度的主要影响因素是沙重比，同时4种因素对相似材料渗透系数均有一定影响；对试验进行回归分析，拟合出了4种影响因素与材料物理力学指标之间的多元线性方程组，通过与原位材料之间的对比，验证了方程组在相似模型材料配制中的适用性，为快速配制全风化花岗岩滑坡物理模型相似材料提供理论参考。

Physical similarity model testing is a commonly used method for analyzing the stability of landslide hazards, with the characteristics of similar materials being a crucial factor affecting the feasibility of the experiments. Taking the Fanlingqian landslide in the Laoshan Scenic Area of Qingdao as research background, aiming to develop similar materials suiTable for physical model tests of completely weathered granite landslides. Sand-to-weight ratio, calcium carbonate powder content, bentonite content, and clay content were selected as influencing factors. Using the controlled variable method, 16 groups of similar materials for completely weathered granite landslides were prepared, and indoor experiments were conducted. Sensitivity analyses of cohesion, internal friction angle, permeability coefficient, and compressive strength were performed using range analysis and standard deviation. The results show that the primary factors influencing cohesion are clay content and calcium carbonate powder content. Internal friction angle is primarily influenced by clay content. Uniaxial compressive strength is mainly affected by the sand-to-weight ratio, and all four factors have some influence on the permeability coefficient. Regression analysis was performed to establish a system of multiple linear equations describing the relationships between the four influencing factors and the physical-mechanical properties of the materials. The applicability of the equations for preparing similar materials was verified by comparing them with in-situ materials. The research results provide a theoretical reference for the rapid preparation of similar materials for physical model tests of completely weathered granite landslides.