SIMILAR MATERIAL STUDY OF MECHANICAL PROTOTYPE TEST OF ROCK STRUCTURAL PLANE
(1.Zhejiang Industry Polytechnic College，Shaoxing，Zhejiang 312000，China；2. Institute of Geotechnical Engineering，Zhejiang University of Science and Technology，Hangzhou，Zhejiang 310023，China；3. Institute of Geotechnical Engineering，Zhejiang University，Hangzhou，Zhejiang 310027，China)
Abstract：Based on shear strength mechanism of rock joints and the selection principle and requirement of similar material，a new type of similar material with the mixture of high-strength cement，silica fume，superplasticizer，standard sand and water is developed. A large number of physico-mechanical tests are performed by using samples and rock joint models made from the new similar material. The results show that the compressive strength and elastic modulus of similar material are close to the mechanical feature of original rock；and similar material can cover low and medium-intensive rock types through adjusting the contents of different materials. The surface morphology and undulation of simulated structure surfaces made with similar material and multi-scale molds are consistent with original rock¢s surface. According to direct shear test，surface wear degree，roughness coefficient attenuation law and failure mode of original rock structural plane and simulated structural plane agree well；and the difference between test results and theoretical values is small. The similar material with the advantage of steady physico-mechanical properties，production convenience and low cost can replace natural rock joints to do different dimensional and repeated destructive rock joint tests.
杜时贵1，2，黄 曼1，3，罗战友2，贾汝达1. 岩石结构面力学原型试验相似材料研究[J]. 岩石力学与工程学报, 2010, 29(11): 2263-2270.
DU Shigui1，2，HUANG Man1，3，LUO Zhanyou2，JIA Ruda1. SIMILAR MATERIAL STUDY OF MECHANICAL PROTOTYPE TEST OF ROCK STRUCTURAL PLANE. , 2010, 29(11): 2263-2270.
2010, Vol. 29 
