循环加卸载中滞回环与弹塑性应变能关系研究

Abstract
Figure/Table
References
Related Citation (15)

Download: PDF (0 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract Uniaxial cyclic loading and unloading experiments for coal samples were performed using electro- hydraulic servo testing machine in order to obtain the relationship between the hysteresis loop and elastoplastic strain energy under cyclic loading and unloading for identifying the burst tendency of coal. The stress-strain curves，the curves of loading cycles against the loop area of hysteresis and the relationship between the elastic strain energy and the loop area of hysteresis were analyzed. The loop area of hysteresis and the elastic strain energy were found to be positively correlated with the circle numbers. The hysteresis loop occurred in the compression phase of the cyclic loading and unloading. When the coal sample was approaching the failure，the irreversible plastic deformation achieved the maximum value. The plastic energy of each cycle was found to be the dissipated energy of the newly generated cracks. The dissipated energy(hysteresis loop area) was not subtracted in calculating the elastic energy index in the previous methods，which led to smaller values. The index formula was thus modified for better predicting the burst tendency of coal.

Key words： rock mechanics elastic strain energy hysteresis loop cycle numbers area of hysteresis loop

Received: 28 April 2014

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors

Cite this article:

URL:

https://rockmech.whrsm.ac.cn/EN/Y2014/V33/I9/1791

[1] 许江，尹光志，王鸿，等. 不同应力水平时砂岩滞回曲线演化的实验研究[J]. 重庆建筑大学学报，2006，28(2)：40–42.(XU Jiang，YIN Guangzhi，WANG Hong，et al. Experimental research on evolution of hysteresis curve of rock in different axial stress levels[J]. Journal of Chongqing Jianzhu University，2006，28(2)：40–42.(in Chinese)) [2] 许江，王维忠，杨秀贵，等. 细粒砂岩在循环加、卸载条件下变形试验[J]. 重庆大学学报：自然科学版，2004，27(3)：18–21.(XU Jiang，WANG Weizhong，YANG Xiugui，et al. Experimental study on the deformation characteristic of fine-sandstone under the loading and unloading condition[J]. Journal of Chongqing University：Natural Science，2004，27(3)：18–21.(in Chinese)) [3] 王鸿，许江，李树春，等. 不同水饱和度下岩石滞回曲线演化的试验研究[J]. 矿业研究与开发，2007，29(4)：80–82.(WANG Hong，XU Jiang，LI Shuchun，et al. Experimental research on the evolution of hysteresis curve of fine-sandstone with different water saturations[J]. Mining Research and Development，2007，29(4)：80–82.(in Chinese)) [4] 张媛，许江，杨红伟，等. 循环荷载作用下围压对砂岩滞回环演化规律的影响[J]. 岩石力学与工程学报，2011，30(2)：320–326. (ZHANG Yuan，XU Jiang，YANG Hongwei，et al. Effect of confining pressure on evolution law of hysteresis loop of sandstone under cyclic loading[J]. Chinese Journal of Rock Mechanics and Engineering，2011，30(2)：320–326.(in Chinese)) [5] 席道瑛，刘小燕，张程远. 由宏观滞回曲线分析岩石的微细观损伤[J]. 岩石力学与工程学报，2003，22(2)：182–187.(XI Daoying，LIU Xiaoyan，ZHANG Chengyuan. Analysis of micro and mesodamage of rock by macro-hysteresis curve[J]. Chinese Journal of Rock Mechanics and Engineering，2003，22(2)：182–187.(in Chinese)) [6] 刘江伟，黄炳香，魏民涛. 单轴循环荷载对煤弹塑性和能量积聚耗散的影响[J]. 辽宁工程技术大学学报：自然科学版，2012，31(1)：26–30.(LIU Jiangwei，HUANG Bingxiang，WEI Mintao. Influence of cyclic uniaxial loading on coal elastio-plastic properties and energy accumulation and dissipation[J]. Journal of Liaoning Technical University：Natural Science，2012，31(1)：26–30.(in Chinese)) [7] 苏承东，袁瑞甫，翟星献. 城郊矿煤样冲击倾向性指数的试验研究[J]. 岩石力学与工程学报，2013，32(增2)：3 696–3 704.(SU Chengdong，YUAN Ruifu，ZHAI Xingxian. Experimental research on bursting liability index of coal samples of Chengjiao mine[J]. Chinese Journal of Rock Mechanics and Engineering，2013，32(Supp.2)：3 696–3 704. (in Chinese)) [8] 苏承东，张振华. 大理岩三轴压缩的塑性变形与能量特征分析[J]. 岩石力学与工程学报，2008，27(2)：273–280.(SU Chengdong，ZHANG Zhenhua. Analysis of plastic deformation and energy property of marble under pseudo-triaxial compression[J]. Chinese Journal of Rock Mechanics and Engineering，2008，27(2)：273–280.(in Chinese)) [9] 赵洪宝，尹光志. 循环载荷作用下突出煤力学性质演化分析[J]. 重庆大学学报，2012，35(3)：103–107.(ZHAO Hongbao，YIN Guangzhi. Analysis of mechanical properties evolution of outburst coal under cyclic loading[J]. Journal of Chongqing University，2012，35(3)：103–107.(in Chinese)) [10] 焦贵德，赵淑萍，马巍，等. 循环荷载下冻土的滞回圈演化规律[J]. 岩石力学与工程学报，2013，35(7)：1 343–1 349.(JIAO Guide，ZHAO Shuping，MA Wei，et al. Evolution laws of hysteresis loops of frozen soil under cyclic loading[J]. Chinese Journal of Rock Mechanics and Engineering，2013，35(7)：1 343–1 349.(in Chinese)) [11] 葛修润，卢应发. 循环荷载作用下岩石疲劳破坏和不可逆变形问题的探讨[J]. 岩土工程学报，1992，14(3)：56–60.(GE Xiurun，LU Yingfa. Study on fatigue failure of irreversible deformation rock under cyclic loading[J]. Chinese Journal of Geotechnical Engineering，1992，14(3)：56–60.(in Chinese)) [12] 章清叙，葛修润，黄铭，等. 周期荷载作用下红砂岩三轴疲劳变形特性试验研究[J]. 岩石力学与工程学报，2006，25(3)：473–478. (ZHANG Qingxu，GE Xiurun，HUANG Ming，et al. Testing study of fatigue deformation law of red-sandstone under triaxial compression with cyclic loading[J]. Chinese Journal of Rock Mechanics and Engineering，2006，25(3)：473–478.(in Chinese)) [13] 葛修润，蒋宇，卢允德，等. 周期荷载作用下岩石疲劳变形特性试验研究[J]. 岩石力学与工程学报，2003，22(10)：1 581–1 585.(GE Xiurun，JIANG Yu，LU Yunde，et al. Testing study on fatigue deformation law of rock under cyclic loading[J]. Chinese Journal of Rock Mechanics and Engineering，2003，22(10)：1 581–1 585.(in Chinese)) [14] 蔡美峰，何满朝，刘东燕. 岩石力学与工程[M]. 北京：科学出版社，2002：96–98.(CAI Meifeng，HE Manchao，LIU Dongyan. Rock mechanics and engineering[M]. Beijing：Science Press，2002：96–98.(in Chinese)) [15] 谢和平，彭瑞东，鞠杨，等. 岩石破坏的能量分析初探[J]. 岩石力学与工程学报，2005，24(15)：2 603–2 607.(XIE Heping，PENG Ruidong，JU Yang，et al. On energy analysis of rock failure[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(15)：2 603–2 607.(in Chinese)) [16] 赵忠虎，谢和平. 岩石变形破坏过程中的能量传递和耗散研究[J]. 四川大学学报：工程科学版，2008，40(2)：26–31.(ZHAO Zhonghu，XIE Heping. Energy transfer and energy dissipation in rock deformation and fracture[J]. Journal of Sichuan University：Engineering Science，2008，40(2)：26–31.(in Chinese)) [17] 谢和平，鞠杨，黎立云，等. 岩体变形破坏过程的能量机制[J]. 岩石力学与工程学报，2008，27(9)：1 729–1 740.(XIE Heping，JU Yang，LI Liyun，et al. Energy mechanism of deformation and failure of rock masses[J]. Chinese Journal of Rock Mechanics and Engineering，2008，27(9)：1 729–1 740.(in Chinese)) [18] 中华人民共和国行业标准编写组. GT/T25217.2—2010 煤层冲击倾向性分类及指数的测定方法[S]. 北京：中国标准出版社，2010. (The Professional Standards Compilation Group of People′s Republic of China. GT/T25217.2—2010 Classification and laboratory test method on bursting liability of coal[S]. Beijing：Standards Press of China，2010.(in Chinese))