水影响下油页岩三轴压缩力学特性试验研究

山东大学学报(工学版) ›› 2011, Vol. 41 ›› Issue (5): 82-85.

水影响下油页岩三轴压缩力学特性试验研究

梁冰,兰波,王俊光

辽宁工程技术大学力学与工程学院, 辽宁阜新 123000

收稿日期:2011-03-09 出版日期:2011-10-16 发布日期:2011-03-09
作者简介:梁冰(1962- ),女,辽宁盘锦人,教授,博士,主要研究方向为矿石岩石力学、渗流力学.E-mail:lbwqx@163.com
基金资助:
国家自然科学基金资助项目(50974070)

Tri-axial compression test study on mechanical characteristics of the oil shale under the water

LIANG Bing, LAN Bo, WANG Jun-guang

School of Mechanics and Engineering, Liaoning Technical University, Fuxin 123000, China

Received:2011-03-09 Online:2011-10-16 Published:2011-03-09

摘要/Abstract

摘要：

为研究油页岩的力学特性,试验采用吉林桦甸油页岩试样,利用YE-200A液压式压力试验机和自制三轴压力室,进行油页岩三轴压缩实验。通过不同围压、不同水化时间的三轴压缩实验,揭示油页岩全应力-应变、峰值强度、弹性模量、泊松比随不同围压和水化时间的变化规律,以及油页岩的破坏形式。结果表明,水化对油页岩的力学特性影响很大,使其峰值强度和弹性模量降低,同时,还表现出明显的延性效应;另外,围压和水化作用的对比分析表明,在围压影响下水化对油页岩强度影响比自然状态下小,油页岩因原岩裂隙发育不同水化后呈现不同的破坏形式。

关键词: 油页岩, 力学性质, 三轴压缩, 水化

Abstract:

For researching mechanical Properties of the oilshale, it was got the sample form Yedian Jilin Province was studied by using the hydraulic testing enginery of YE-200A and home-made triaxial stress room to make triaxial compression experiment to the oilshale. By triaxial compression tests under the conditions of different confining Pressure and different hydration time, the evolution laws was revealed for all stress-strain, Peak strength, elastic modulus and poisson′s ratio with different confining Pressure and hydration time and the destructive forms of oil shale. At last,the results showed that the hydration taked prominent influence on mechanical properties of oil shale,which made the peak intensity and elastic modulus of oil-shale reduced. At the same time, owing to hydration, oil shale had obvious ductility. In addition, the comparative analysis of confining pressure and hydration showed that the strength of oil shale influenced by hydration was smaller than natural state under certain confining pressure. Because of different fracture development in oil shale in-situe, oil-shale after hydration presented different destructive forms.

Key words: oil shale, mechanical properties, triaxial compression, hydration

梁冰,兰波,王俊光. 水影响下油页岩三轴压缩力学特性试验研究[J]. 山东大学学报(工学版), 2011, 41(5): 82-85.

LIANG Bing, LAN Bo, WANG Jun-guang. Tri-axial compression test study on mechanical characteristics of the oil shale under the water[J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2011, 41(5): 82-85.

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