摘要
本文对砂岩、灰岩、大理岩在不同温度条件下的单轴抗压强度进行了实验研究,并对岩石在各种温度下结构变化进行了镜下分析,探讨了岩石受热后的破裂机理,定性定量地分析了岩石裂纹随温度变化而发展的规律。研究和分析结果表明:在热应力和外应力的作用下,随着温度增加,砂岩单轴抗压强度有增加的趋势,而灰岩、大理石的强度则有所降低。温度对这几种岩石的变形和破坏特性也有很大影响。
In this paper, the experimental study on the uniaxial compressive strength of the sandstone, limestone and marble are described, these rock specimens were heated under different temperature The micro-structure changs of rocks under various temperature are observed with SEM, the fracture mechanism of heated rocks are studied, the developmental law of rock cracks are qualitatively and quantitatively analysed.The study results showed that thermal stress affects uniaxial compressive strength of rocks, for example, with temperature increasing, the strength of the sandstone has an increase trend, but limestone and marble have a decrease trend. The temperature has a great influence upon deformation and destruction of these rocks too.
出处
《岩土力学》
EI
CAS
CSCD
1990年第4期51-61,共11页
Rock and Soil Mechanics
基金
国家自然科学基金"核废料地下贮存的基础研究"
