CAJ | 학술논문

院笔者采用RMT-150C岩石力学试验系统开展了常温以及200益作用后大理岩试件在卸荷路径下的单轴、三轴压缩试验，结合SEM电镜电镜扫描试验的结果，引用了损伤力学的概念，分析了大理岩试件在不同温度作用后的宏、细观破坏特征。试验结果表明：卸荷路径下的试件，受200益温度作用后，试件的破碎程度普遍要比常温试件的要高；用纵波波速比商法定义了温度损伤，损伤因子变化和强度降低的变化成反相关；温度作用后大理岩的微观破坏特性的变化主要表现在气孔变大变多，张剪性、缩聚性微裂纹变多。
원필자채용RMT-150C암석역학시험계통개전료상온이급200익작용후대리암시건재사하로경하적단축、삼축압축시험，결합SEM전경전경소묘시험적결과，인용료손상역학적개념，분석료대리암시건재불동온도작용후적굉、세관파배특정。시험결과표명：사하로경하적시건，수200익온도작용후，시건적파쇄정도보편요비상온시건적요고；용종파파속비상법정의료온도손상，손상인자변화화강도강저적변화성반상관；온도작용후대리암적미관파배특성적변화주요표현재기공변대변다，장전성、축취성미렬문변다。
The author uses RMT-150C rock mechanics test system to carry out the uniaxial and triaxial compression test of marble specimens under unloading path at room temperature and after 200℃role. Combined with the results of SEM electron microscope trial, the concept of damage mechanics is introduced to analyze the macroscopic and microscopic characteristics of the marble specimens at different temperatures role. The test results showed that:under the unloading path and after effect by temperature 200℃, the degree of fragmentation of the specimen was generally higher than normal temperature of the specimen; commercial longitudinal wave ratio was used to define temperature injury, and the damage factor changes and strength reduction changes were inversely related; the changes of microscopic damage characteristics mainly showed that the pores became bigger and more and the tension-shear resistance, condensation resistance microcracks increased.