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利用MTS810电液伺服材料试验系统以及高温炉MTS652.02,在常温(25℃)～800℃条件下对泥岩试件进行了单轴压缩实验,分析了温度对泥岩的应力-应变曲线、弹性模量、峰值应力及峰值应变的影响。结果表明:泥岩的弹性模量在常温～400℃范围内随着温度的升高呈现明显的增加趋势,经历600℃高温后泥岩的弹性模量开始急剧下降,在600～800℃内弹性模量提高幅度不大;泥岩的峰值应力在常温～400℃时呈明显上升趋势,温度达到600℃时急剧下降,600℃之后则呈平缓下降态势;泥岩的峰值应变在100℃以前随温度的升高变化不是很明显,在100～400℃内呈逐渐上升趋势,高于400℃后有下降趋势,当温度达到800℃时峰值应变又有小幅度的上升。
The MTS810 electro-hydraulic servo material test system and the MTS652.02 high temperature furnace were used to test the mudstone specimens under uniaxial compression at room temperature (25 ℃) ~ 800 ℃. The stress-strain curves, the elastic modulus Volume, peak stress and peak strain. The results show that the elastic modulus of mudstone increases obviously with the increase of temperature from room temperature to 400 ℃, and the elastic modulus of mudstone begins to drop sharply after 600 ℃. Under the condition of 600-800 ℃, the elastic modulus The peak stress of mudstone obviously increases from room temperature to 400 ℃, sharply decreases when the temperature reaches 600 ℃, and then decreases gently after 600 ℃. The peak strain of mudstone increases with the temperature before 100 ℃ The change is not very obvious. It shows a gradual upward trend in the temperature range of 100 ~ 400 ℃. After the temperature rises above 400 ℃, it shows a downward trend. When the temperature reaches 800 ℃, the peak strain increases slightly again.