CAJ | 학술논문

　　通过单轴压缩试验，对经历不同温度(25~1000℃)后大理岩的纵波波速、抗压强度、破坏形态以及损伤特性随温度的变化规律进行研究。试验结果表明：高温后大理岩破坏时，沿轴向存在多个劈裂面，主要体现为劈裂破坏的模式；单轴抗压强度在100℃和400℃时有2次强化作用，从800℃左右，抗压强度开始急剧下降直至1000℃时，基本失去了承载能力；随着加热温度的升高，大理岩试样的纵波波速近似线性下降，损伤因子近似线性增加，反映了大理岩经历高温作用后内部性质的变化；岩石是由不同矿物组成的多晶体，高温环境下各种矿物性质的变化，在一定程度上影响着岩石高温后的物理力学性质。
　　통과단축압축시험，대경력불동온도(25~1000℃)후대리암적종파파속、항압강도、파배형태이급손상특성수온도적변화규률진행연구。시험결과표명：고온후대리암파배시，연축향존재다개벽렬면，주요체현위벽렬파배적모식；단축항압강도재100℃화400℃시유2차강화작용，종800℃좌우，항압강도개시급극하강직지1000℃시，기본실거료승재능력；수착가열온도적승고，대리암시양적종파파속근사선성하강，손상인자근사선성증가，반영료대리암경력고온작용후내부성질적변화；암석시유불동광물조성적다정체，고온배경하각충광물성질적변화，재일정정도상영향착암석고온후적물리역학성질。
Based on the uniaxial compressive test, the variation laws of longitudinal wave velocity, failure modes, compressive strength and damage property of marble specimens while experiencing dif-ferent temperatures among 25~1 000 ℃ were studied in this paper. The test results show that there are multiple splitting surfaces along the axial direction of marble after high temperatures, and the split fail-ure mode is the main destructive manner of marble. Meanwhile, the compressive strength of marble in-creases visibly at 100 ℃and 400 ℃, and then presents deterioration with the increase of temperature after 800 ℃. When the temperature reaches to 1 000 ℃, the marble nearly losses bearing capacity. Moreover, the longitudinal wave velocity declines linearly and the damage increases linearly with the increase of temperature, which reflects the changes to internal nature of marble after the high tempera-ture effects. Rock mass is aggregated with mineral components together, thus, the changes of mineral components under high temperatures, to some extent, can affect the physical and mechanical characte-ristics of rock mass.