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地质力学模型试验技术是用来研究坝基、高边坡及地下洞室的稳定安全度、破坏形态与加固工程措施的一项新技术。 适合作地质力学模型试验的材料,必须具有容重大、强度低、性能稳定等特点,因此,模型材料的研究是地质力学模型试验必须首先解决的关键问题。 本文在1978年材料研究的基础上,参考意大利结构和模型试验研究所资料,改进原来的浇铸成型为压模成型,较全面地研究了用无水石膏为胶凝剂的模型材料的力学变形性能,包括单轴和三维应力条件下的各种参数。同时,还对意大利结构及模型试验研究所目前应用的模型材料,进行了验证性试验。 本文总结一年以来的研究成果,这些成果都是有规律性的、有的曾经反复地验证过。希望这些成果,能够对当前我国的地质力学模型试验起到一定的作用。
Geomechanical model test technology is a new technique used to study the stability, safety, damage morphology and reinforcement engineering measures for dam foundations, high slopes and underground caverns. The materials suitable for geomechanical model tests must have the characteristics of large capacity, low strength, and stable performance. Therefore, the study of model materials is the key issue that must be resolved first in geomechanical model tests. Based on the material study in 1978, with reference to the Italian Institute for Structural and Model Tests, the original casting molding was improved by compression molding, and the mechanical deformation properties of model materials with anhydrous gypsum as a gelling agent were studied comprehensively. , including various parameters under uniaxial and 3D stress conditions. At the same time, confirmatory tests were performed on the model materials currently applied in the Italian Structure and Model Test Institute. This article summarizes the results of a year of research. These results have been regular and have been repeatedly verified. It is hoped that these achievements will play a role in the current geomechanical model tests in China.