运用带有加热装置的电液伺服材料试验机对热处理后和高温下的花岗岩进行了静态力学实验。分析了两种状态下花岗岩的应力-应变曲线及峰值强度、峰值应变和弹性模量随温度的变化规律,并且探讨了两种状态下岩石的破坏形态。结果显示,与热处理后的花岗岩相比,高温下花岗岩脆-延转变的临界温度更低,压密阶段更长,弹性模量更小且损伤更大。此外,与热处理后的花岗岩相比较,高温下花岗岩的峰值应力更小,然而峰值应变却更大,且两者都随着温度的升高变化更加显著。另外,高温处理后和高温下花岗岩的破坏形态明显不同。低于100°C时,两种状态下花岗岩的破坏形态相同,皆表现为劈裂破坏。然而,高于100°C后,热处理后和高温下花岗岩的破坏形态分别表现为劈裂破坏和剪切破坏。 The static mechanical experiment of granite after heat treatment and high temperature was carried out by using the electro-hydraulic servo material testing machine with heating device. The stress-strain curves, peak intensity, peak strain and elastic modulus of granite under two states were analyzed. The variation of rock mass under two states was also discussed. The results show that, compared with the heat treated granite, the brittle - ductile transition temperature of granite is lower, the compaction stage is longer, the elastic modulus is smaller and the damage is more serious. In addition, compared with the heat treated granite, the granite at high temperature has a smaller peak stress but a greater peak strain, and both of them are more pronounced with increasing temperature. In addition, the damage morphology of granite after high temperature treatment and high temperature is obviously different. Below 100 ° C, both forms of granite damage the same shape, all for the splitting failure. However, above 100 ° C, the failure morphology of granite after heat-treatment and at high temperature showed splitting failure and shear failure, respectively.