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Research of quantitative assessment methods on mechanical similarity of rock similar material
REN Xuhu1, ZHANG Zhuo2,SHAN Yixian1
(1.College of Information and Control Engineering in China University of Petroleum, Qingdao 266580, China;2.CNOOC Shandong Chemical Engineering Company Limited, Jinan 250101, China)
Abstract:
Similar material is one of the key factors in physical model experiment. Two quantitative assessment methods were analyzed. A quantitative assessment method for the mechanical similarity of rock similar material was proposed based on stress-strain curve, which is composed of stress-strain curve assessment, stress-strain curve based π assessment and comprehensive assessment. The comprehensive assessment value indicates the level of similarity. The analysis results show that the assessment should contain two aspects. One is the evaluation of discrepancy between theoretical parameters and practical parameters of similar materials, the other is the measurement of the difference in non-dimensional number. The application of this method in integrated physical simulation of tectonic deformation and hydrocarbon charging shows its practicability.
Key words:  similarity assessment  similar material  rock mechanics  stress-strain curve