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温度作用下的裂隙岩体是高放射性核废物的地层深埋处置、地热资源开发以及大都市圈的大深度地下空间开发利用等工程中经常遇到的一类复杂岩体。从加热后裂隙岩体的损伤机理研究入手,通过对不同温度应力作用后大理岩进行单轴压缩试验,得到了各温度下大理岩全应力—应变曲线,并分析了大理岩抗压强度、弹性模量和峰值应变等随加温温度变化的关系及其产生现象的原因,为探索高温岩石力学性质提供了理论依据和参考。
The fractured rock mass under the temperature is a kind of complex rock mass often encountered in deep geological disposal of highly radioactive nuclear waste, geothermal resource exploitation and the deep underground space development and utilization of the metropolitan area. Starting from the study of the damage mechanism of fractured rock mass after heating, the uniaxial compressive test of marble after different temperature stress is carried out, the full stress-strain curve of marble is obtained, and the compressive strength, elastic property Modulus and peak strain with the change of heating temperature and the reasons for the phenomenon, provide a theoretical basis and reference for exploring the mechanical properties of high temperature rocks.