不同瓦斯压力下煤岩声发射特征试验研究

Abstract
Figure/Table
References (15)
Related Citation (15)

Download: PDF (1038 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract Using self-developed triaxial servo-controlled seepage equipment for thermo-fluid-solid coupling of coal containing methane with acoustic emission(AE) monitoring system，this paper carried out experiment on AE characteristics of coal and rock under different gas pressures by conventional triaxial compression. Result of the test shows that，gas pressure plays a role in softening to coal and rock，with the increase of gas pressure，the brittleness of coal and rock weakened in the process of loading but the ductility enhanced，both compressive strength and elastic modulus show a decreasing trend. According to the experimental conclusions that both the relations of AE characteristics of coal and rock and stress-strain，and AE accumulative counts and strain，carried out that during the failure process of conventional triaxial compression，the rupture type of coal and rock without gas is sudden rupture，the rupture type of gaseous coal and rock is stable rupture. On the basis of taking into account the stress and gas pressure caused the damage of coal and rock，established the relation of the damage of coal and rock represented by AE accumulative counts under different gas pressures，and verified by experiments，verification results show that，based on the AE of the relation of the damage of coal and rock，to some extent，truly reflects the failure process and the strength characteristics of gaseous coal and rock.

Key words： rock mechanics rupture type acoustic emission(AE) characteristics damage analysis

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	QIN Hu 1
	2
	3
	HUANG Gun1
	2
	3
	JIANG Changbao1
	2
	3
	LI Wenpu1
	2
	3

Cite this article:

QIN Hu 1,2,3, et al. EXPERIMENTAL RESEARCH ON ACOUSTIC EMISSION CHARACTERISTICS OF COAL AND ROCK UNDER DIFFERENT GAS PRESSURES[J]. , 2013, 32(s2): 3719-3725.

URL:

https://rockmech.whrsm.ac.cn/EN/Y2013/V32/Is2/3719

[1] 俞启香. 矿井瓦斯防治[M]. 徐州：中国矿业大学出版社，1992：3–60.(YU Qixiang. Mine gas prevention and control[M]. Xuzhou：China University of Mining and Technology Press，1992：3–60.(in Chinese))

[2] 王恩元，何学秋，刘贞堂. 受载岩石电磁辐射特性及其应用研究[J]. 岩石力学与工程学报，2002，21(10)：1 473–1 477.(WANG Enyuan，HE Xueqiu，LIU Zhentang. Study on electromagnetic emission characteristics of loaded rock and its applications[J]. Chinese Journal of Rock Mechanics and Engineering，2002，21(10)：1 473–1 477.(in Chinese))

[3] 陈景涛. 岩石变形特征和声发射特征的三轴试验研究[J]. 武汉理工大学学报，2008，30(2)：94–96.(CHEN Jingtao. Experimental study on triaxial compression deformation and acoustic emission property of rock[J]. Journal of Wuhan University of Technology，2008，30(2)：94–96.(in Chinese))

[4] 杨健，王连俊. 岩爆机制声发射试验研究[J]. 岩石力学与工程学报，2005，24(20)：3 796–3 802.(YANG Jian，WANG Lianjun. Study on mechanism of rock burst by acoustic emission testing[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(20)：3 796–3 802.(in Chinese))

[5] GANNE P，VERVOORT A，WEVERS M. Quantification of pre-peak brittle damage：correlation between acoustic emission and observed micro-fracturing[J]. International Journal of Rock Mechanics and Mining Sciences，2007，44(5)：720–729.

[6] CAI M，MORIOKA H，KAISER P K，et al. Back-analysis of rock mass strength parameters using AE monitoring data[J]. International Journal of Rock Mechanics and Mining Sciences，2007，44(4)：538–549.

[7] 赵毅鑫，姜耀东，祝捷，等. 煤岩组合体变形破坏前兆的试验研究[J]. 岩石力学与工程学报，2008，27(2)：339–346.(ZHAO Yixin，JIANG Yaodong，ZHU Jie，et al. Experimental study on precursory information of deformations of coal-rock composite samples before failure[J]. Chinese Journal of Rock Mechanics and Engineering，2008，27(2)：339–346.(in Chinese))

[8] 王恩元，何学秋，刘贞堂，等. 煤体破裂声发射的频谱特征研究[J]. 煤炭学报，2004，29(3)：289–292.(WANG Enyuan，HE Xueqiu，LIU Zhentang，et al. Study on frequency spectrum characteristics of acoustic emission in coal or rock deformation and fracture[J]. Journal of China Coal Society，2004，29(3)：289–292.(in Chinese))

[9] 曹树刚，刘延保，张立强. 突出煤体变形破坏声发射特征的综合分析[J]. 岩石力学与工程学报，2007，26(增1)：2 794–2 799.(CAO Shugang，LIU Yangbao，ZHANG Liqiang. Study on characteristics of acoustic emission in oueburst coal[J]. Chinese Journal of Rock Mechanics and Engineering，2007，26(Supp.1)：2 794–2 799.(in Chinese))

[10] 张茹，谢和平，刘建锋，等. 单轴多级加载岩石破坏声发射特性试验研究[J]. 岩石力学与工程学报，2006，25(12)：2 584–2 588. (ZHANG Ru，XIE Heping，LIU Jianfeng，et al. Experimental Study on acoustic emission characteristics of rock failure under uniaxial multilevel loadings[J]. Chinese Journal of Rock Mechanics and Engineering，2006，25(12)：2 584–2 588.(in Chinese))

[11] 李庶林，尹贤刚，王泳嘉，等. 单轴受压岩石破坏过程中声发射特征研究[J]. 岩石力学与工程学报，2004，23(15)：2 499–2 503.(LI Shulin，YIN Xiangang，WANG Yongjia，et al. Studies on acoustic emission characteristics of uniaxial compressive rock failure[J]. Chinese Journal of Rock Mechanics and Engineering，2004，23(15)：2 499–2 503.(in Chinese))

[12] 刘保县，黄敬林，王泽云，等. 单轴压缩煤岩损伤演化及声发射特性研究[J]. 岩石力学与工程学报，2009，28(增1)：3 234–3 238.(LIU Baoxian，HUANG Jinglin，WANG Zeyun，et al. Study on damage evolution and acoustic emission character of coal-rock under uniaxial compression[J]. Chinese Journal of Rock Mechanics and Engineering，2009，28(Supp.1)：3 234–3 238.(in Chinese))

[13] 王恩元，何学秋，刘贞堂. 煤岩破裂声发射试验研究及R/S统计分析[J]. 煤炭学报，1999，24(3)：270–273.(WANG Enyuan，HE Xueqiu，LIU Zhentang. Experimental research and R/S statistic analysis of AE during the fracture of coal or rock[J]. Journal of China Coal Society，1999，24(3)：270–273.(in Chinese))

[14] 曹文贵，方祖烈，唐学军. 岩石损伤软化统计本构模型之研究[J]. 岩石力学与工程学报，1998，17(6)：628–633.(CAO Wengui，FANG Zulie，TANG Xuejun. A study of statistical constitutive model for soft and damage rocks[J]. Chinese Journal of Rock Mechanics and Engineering，1998，17(6)：628–633.(in Chinese))

[15] 刘齐建，杨林德，曹文贵. 岩石统计损伤本构模型及其参数反演[J]. 岩石力学与工程学报，2005，24(4)：616–621.(LIU Qijian，YANG Linde，CAO Wengui. Statistical damage constitutive model for rock and back analysis of its parameters[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(4)：616–621.(in Chinese))