不同围压下岩石峰后及残余变形特性试验研究

发布时间：2018-04-01 13:26

本文选题：围压　切入点：峰值强度　出处：《中国钨业》2016年04期

【摘要】：为使矿山能安全高效地开采,对深部矿山三向应力状态的岩石进行研究。试验采用RTS-500三轴流变仪,对较深部岩石进行常规三轴压缩试验,得到了应力-应变曲线。试验发现:随着围压的增大,峰值强度和残余强度都呈逐渐增大的趋势;峰值强度与残余强度的差值也逐渐降低;随着围压的增大,岩石峰值强度对应的岩石应变出现增大的现象;随着围压增大,岩石的弹性模量出现增大的现象。结论对于实际施工的工程稳定以及岩体的支护设计都具有指导和借鉴意义。
[Abstract]:In order to make the mine mining safely and efficiently, the triaxial stress state rock of deep mine is studied. The conventional triaxial compression test of deeper rock is carried out by using RTS-500 triaxial rheometer. The stress-strain curve is obtained. It is found that the peak strength and residual strength increase gradually with the increase of confining pressure, the difference between peak strength and residual strength decreases gradually, and with the increase of confining pressure, The rock strain corresponding to the peak strength of rock increases and the elastic modulus of rock increases with the increase of confining pressure.
【作者单位】：江西理工大学江西省矿业工程重点实验室;铜陵有色凤凰山矿业有限公司;江西大吉山钨业有限公司;
【基金】：国家自然科学基金资助项目(51304083) 江西省科技支撑计划资助项目(20141BBE50005) 江西省创新基金资助项目(YC2015-S294)
【分类号】：TD315

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