摘要
通过对不同温度、压力实验条件下的不同煤级煤的应力－应变曲线的特征分析，深入探讨了不同煤化程度煤的变形行为，论述了温度和压力是影响煤变形的重要因素．在中煤级煤阶段，虽然围压的增大可在一定程度上提高煤的强度，但温度的影响更为重要．对于较高煤级煤，在小应变阶段温度起主导作用，而到了大变形阶段围压的作用又逐渐上升为主导地位．此外，在一定的条件下。
The deformation behaviour of different ranks of coal was discussed based on characteristics of stress and strain curves of coals tested under different temperature and confining pressure.Temperature and confining pressure are considered to be two important influencing factors.In the middle stage of coal metamorphism increase of the confining pressure will increase to a certain extent the strength of coal.However,the influence of temperature is even more important. For high rank of coal,the temperature is predominant in the stage of low strain. And the confining pressure will gradually become predominant in the stage of high strain. In addition, under specific conditions the gas produced and released from coal will greatly affect the deformation behaviour of coal.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
1997年第1期80-84,共5页
Journal of China Coal Society
基金
国家自然科学基金
煤炭科学基金
关键词
煤
高温
高压
变形
煤田
地质构造
coal, high temperature, high confining pressure, deformation,stress strain
