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为研究软弱破碎油页岩巷道蠕变变形特性及变化规律,根据地质力学模型试验相似原理及油页岩岩石物理力学参数,确定以硅胶粉和河砂为骨料,以正十四烷、石膏为胶结剂,通过相似材料配比及相似材料试件基本力学参数、蠕变参数测试,得到骨胶比为1∶0.4、骨料比为5∶5的相似材料,与岩石蠕变力学特性具有一致性,基本满足软弱破碎油页岩蠕变相似模型要求的材料配比。上述结果为开展油页岩地下开采巷道运营期的变形、破坏相似材料模型试验打下了坚实的基础。
In order to study the creep and deformation characteristics of soft shale roadway and its variation, according to the similar principle of geomechanical model test and petrophysical parameters of oil shale, it is determined that silica gel powder and river sand are used as aggregate, and n-tetradecane, gypsum As binder, the basic mechanical parameters and creep parameters of similar materials and similar materials were tested to obtain similar materials with a ratio of cement to binder of 1: 0.4 and an aggregate ratio of 5: 5, which was consistent with the creep mechanical properties of rock It basically meets the material ratio required by similar model of shale in shale of weak and broken oil. The above results have laid a solid foundation for the deformation during the operation period of the underground mining roadway of oil shale and the destruction of similar material model tests.