循环荷载作用下煤变形及渗透特性的试验研究

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (0 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要利用自主研发的含瓦斯煤岩热流固耦合三轴伺服渗流装置，以型煤试件为研究对象，进行不同温度条件下循环荷载试验，研究循环荷载作用下煤变形及渗透特性。研究结果表明：(1) 随温度的升高，煤循环形成的滞回曲线所围成的面积逐渐减小。在单个循环曲线中，加、卸载阶段的主应力差、渗透率与轴向应变曲线呈现“X”状；在同一循环周期下，轴向应变与渗透率随温度的升高逐渐减小；在同一温度下，轴向变形随循环次数的增加逐渐增大。(2) 随温度的升高，加载阶段曲线斜率逐渐增加，累计变形总量降低，即提高了不可逆过程的发展速率。(3) 在各温度条件下，加载阶段应变及渗透率在整个循环过程中的变化均不明显。卸载阶段应变及渗透率在第1次循环期间变化较大，但从第2次循环开始，应变随循环次数的增加趋于平缓。在相同循环次数下，体积应变随温度的升高逐渐增大，渗透率逐渐减小。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章

关键词 ：岩石力学, 循环荷载, 温度, 渗透率, 变形特性

Abstract：Based on the self-developed triaxial servo-controlled seepage equipment for thermal-hydro- mechanical coupling of coal containing methane，the cyclic loading test is performed on coal samples under different temperatures. The results are shown as follows：(1) The area surrounded by hysteretic curve reduces gradually with temperature increase. In a single hysteresis curve，the relation curves between principal stress difference，permeability and axial strain present X-shape. In the same cycle，the axial strain and permeability decrease gradually with temperature increase. The axial deformation increases as the number of cycles increases in same temperature condition. (2) As temperature increases，the slope of curve in loading stage increases，the cumulative deformation reduces，which means the development rate of the irreversible process has been improved. (3) In different temperature conditions，the changes of strain and permeability in loading stage are not obvious during the entire cycle. In unloading stage，the strain and permeability change significantly in the first cycle，and strain curve begins to stabilize with increase of the number of cycles. When the number of cycles is the same in different temperature conditions，the volumetric strain increases gradually and the permeability decreases with increase of temperature.

Key words： rock mechanics cyclic load temperature permeability deformation characteristics

收稿日期: 2013-03-22

引用本文:

许江1，2，李波波1，2，周婷1，2，曹偈1，2，叶桂兵1，2. 循环荷载作用下煤变形及渗透特性的试验研究[J]. 岩石力学与工程学报, 2014, 33(2): 225-234.
XU Jiang1，2，LI Bobo1，2，ZHOU Ting1，2，CAO Jie1，2，YE Guibing1，2. EXPERIMENTAL STUDY OF DEFORMATION AND SEEPAGE CHARACTERISTICS OF COAL UNDER CYCLIC LOADING. , 2014, 33(2): 225-234.

链接本文:

https://rockmech.whrsm.ac.cn/CN/Y2014/V33/I2/225

[1]	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 of 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))
[2]	蒋宇，葛修润，任建喜. 岩石疲劳破坏过程中的变形规律及声发射特性[J]. 岩石力学与工程学报，2004，23(11)：1 810-1 814. (JIANG Yu，GE Xiurun，REN Jianxi. Deformation rules and acoustic emission characteristics of rocks in process of fatigue failure[J]. Chinese Journal of Rock Mechanics and Engineering，2004，23(11)：1 810-1 814.(in Chinese))
[3]	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 on 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))
[4]	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 meso-damage of rock by macro-hysteresis curve[J]. Chinese Journal of Rock Mechanics and Engineering，2003，22(2)：182-187.(in Chinese))
[5]	左宇军，李夕兵，唐春安，等. 受静荷载的岩石在周期荷载作用下破坏的试验研究[J]. 岩土力学，2007，28(5)：927-932.(ZUO Yujun，LI Xibing，TANG Chun′an，et al. Experimental investigation on failure of statically loaded rock subjected to periodic load[J]. Rock and Soil Mechanics，2007，28(5)：927-932.(in Chinese)) " target="_blank">
[6]	肖建清，丁德馨，徐根，等. 常幅荷载下岩石的变形特性[J]. 中南大学学报：自然科学版，2010，41(2)：685-691.(XIAO Jianqing，DING Dexin，XU Gen，et al. Deformation characteristics of rock under constant amplitude cyclic loading[J]. Journal of Central South University：Science and Technology，2010，41(2)：685-691.(in Chinese)) " target="_blank">
[7]	郭印同，赵克烈，孙冠华，等. 周期荷载下盐岩的疲劳变形及损伤特性研究[J]. 岩土力学，2011，32(5)：1 353-1 359.(GUO Yintong，ZHAO Kelie，SUN Guanhua，et al. Experimental study of fatigue deformation and damage characteristics of salt rock under cyclic loading[J]. Rock and Soil Mechanics，2011，32(5)：1 353-1 359.(in Chinese))
[8]	杨永杰，宋扬，楚俊. 循环荷载作用下煤岩强度及变形特征试验研究[J]. 岩石力学与工程学报，2007，26(1)：201-205.(YANG Yongjie，SONG Yang，CHU Jun. Experimental study of characteristics of strength and deformation of coal under cyclic loading[J]. Chinese Journal of Rock Mechanics and Engineering，2007，26(1)：201-205.(in Chinese))
[9]	李晓泉，尹光志，蔡波. 循环荷载下突出煤样的变形和渗透特性试验研究[J]. 岩石力学与工程学报，2009，28(增2)：3 498- 3 504.(LI Xiaoquan，YIN Guangzhi，CAI Bo. Experimental study of deformation and seepage properties of outburst coal samples under cyclic loading[J]. Chinese Journal of Rock Mechanics and Engineering，2009，28(Supp.2)：3 498-3 504.(in Chinese)) " target="_blank">
[10]	倪骁慧，李晓娟，朱珍德. 不同温度循环作用后大理岩细观损伤特征的定量研究[J]. 煤炭学报，2011，36(2)：248-254.(NI Xiaohui，LI Xiaojuan，ZHU Zhende. Quantitative test on meso-damage characteristics of marble after different temperatures[J]. Journal of China Coal Society，2011，36(2)：248-254.(in Chinese))
[11]	任松，白月明，姜德义，等. 温度对盐岩疲劳特性影响的试验研究[J]. 岩石力学与工程学报，2012，31(9)：1 839-1 845.(REN Song，BAI Yueming，JIANG Deyi，et al. Experimental study of temperature effect on fatigue property of salt rock[J]. Chinese Journal of Rock Mechanics and Engineering，2012，31(9)：1 839-1 845.(in Chinese))
[12]	许江，彭守建，尹光志，等. 含瓦斯煤热流固耦合三轴伺服渗流装置的研制及应用[J]. 岩石力学与工程学报，2010，29(5)：907-914.(XU Jiang，PENG Shoujian，YIN Guangzhi，et al. Development and application of triaxial servo-controlled seepage equipment for thermo-fluid-solid coupling of coal containing methane[J]. Chinese Journal of Rock Mechanics and Engineering，2010，29(5)：907-914.(in Chinese))
[13]	杨永杰，宋扬，陈绍杰. 煤岩全应力-应变过程渗透性特征试验研究[J]. 岩土力学，2007，28(2)：381-385.(YANG Yongjie，SONG Yang，CHEN Shaojie. Test study on permeability properties of coal specimens in complete stress-strain process[J]. Rock and Soil Mechanics，2007，28(2)：381-385.(in Chinese)) " target="_blank">
[14]	张天军，许鸿杰，李树刚，等. 温度对煤吸附性能的影响[J]. 煤炭学报，2009，34(6)：802-805.(ZHANG Tianjun，XU Hongjie，LI Shugang，et al. The effect of temperature on the absorbing capability of coal[J]. Journal of China Coal Society，2009，34(6)：802-805.(in Chinese))
[15]	杨新乐，张永利. 气固耦合作用下温度对煤瓦斯渗透率影响规律的试验研究[J]. 地质力学学报，2008，14(4)：374-379.(YANG Xinle，ZHANG Yongli. Experimental study on desorption of effect of temperature on coal gas permeability under gas-solid coupling[J]. Journal of Geomechanics，2008，14(4)：374-379.(in Chinese)) " target="_blank">
[16]	李志强，鲜学福，隆晴明. 不同温度应力条件下煤体渗透率试验研究[J]. 中国矿业大学学报，2009，38(4)：523-527.(LI Zhiqiang，XIAN Xuefu，LONG Qingming. Experimental study of coal permeability under different temperatures and stresses[J]. Journal of China University of Mining and Technology，2009，38(4)：523-527.(in Chinese)) " target="_blank">
[17]	胡耀青，赵阳升，杨栋，等. 温度对褐煤渗透特性影响的试验研究[J]. 岩石力学与工程学报，2010，29(8)：1 585-1 590.(HU Yaoqing，ZHAO Yangsheng，YANG Dong，et al. Experimental study of effect of temperature on permeability characteristics of lignite[J]. Chinese Journal of Rock Mechanics and Engineering，2010，29(8)： 1 585-1 590.(in Chinese))
[18]	冯子军，万志军，赵阳升，等. 高温三轴应力下无烟煤、气煤煤体渗透特性的试验研究[J]. 岩石力学与工程学报，2010，29(4)：689-696.(FENG Zijun，WAN Zhijun，ZHAO Yangsheng，et al. Experimental study of permeability of anthracite and gas coal masses under high temperature and triaxial stress[J]. Chinese Journal of Rock Mechanics and Engineering，2010，29(4)：689-696.(in Chinese))