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本文系通过黄河小浪底细砂岩单轴压缩蠕变试验研究岩石蠕变性质。该试验是在新近研制的多功能三轴流变仪上,在室温条件下、以梯级加载方式进行的,采用应变片测其轴向、侧向随时间的变形,从而得出了梯级加载时的体蠕变曲线。通过对蠕变曲线的详细分析,探讨了蠕变的微观机制。蠕变随时间的变化满足ε=A+Blgt+Ct这样一个规律。本文对试验结果做了叠加处理,得出了不同时间的应力-应变曲线,并对时间的影响予以讨论。
In this paper, the creep properties of rocks are studied through the uniaxial compression creep test of Xiaolangdi fine sandstone of the Yellow River. The test was performed on a newly developed multi-function triaxial rheometer at room temperature in a step-loading manner. Strain gages were used to measure the axial and lateral deformations over time, resulting in a step loading. The body creep curve. Through the detailed analysis of the creep curve, the microscopic mechanism of creep is discussed. The change of creep with time satisfies such a rule as ε=A+Blgt+Ct. In this paper, the test results are superimposed and the stress-strain curves at different times are obtained, and the influence of the time is discussed.