三维应力下煤与瓦斯突出模拟试验研究

Abstract
Figure/Table
References
Related Citation (15)

Download: PDF (294 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract In fact，coal and gas outburst is mechanical destabilization and damage to gassy coal induced by mining under tridimensional stresses，seriously threatening safe production for coal mine. Taking the moulding coal powders of typical high-gassy coal mines，Sunjiawan coal mines in Fuxin as research object，the experiments of coal and gas outburst were made to detect rule by home-made device under tridimensional stresses including axial pressure，confining pressure and pore pressure to simulate －600 m mining. The outburst features were reproduced such as that the size of jet mouth is smaller than the radius of jet hole and the distribution of jet coal powders has sorting feature. The reliability of device was verified. According to the results，six outburst zones were divided and new understandings were presented. The mass distribution of coal powders had zone feature and existed extremal zone and mean zone. A new idea was presented to study outburst mechanism based on the jet features of gas-coal two-phase reflected in experiments. The maximum zone of mass of coal powders was located in medium long zone which was the energy dissipation zone of jet outburst of gas-solid two-phase gassy coal. The remarkable wave character was observed by the distribution of coal powders on different particle sizes. The coal powders of smaller size were main part in maximum zone of mass. The coal powders of rather large size were main part in minimum zone of mass. The coal powders of smaller size were main part in the ending of outbursting zone. It was presented that high-pressure gas is not only outbursting power but also damage power for powdered coal. The energy releasing has wave character in the process of coal and gas outburst. The conclusions can offer references to mechanism understanding of coal and gas outburst.

Key words： mining engineering coal and gas outburst tridimensional stresses sorting feature wave character

Received: 18 December 2012

	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/Y2013/V32/I5/960

[1] LI S，WANG Q J，LUAN Q L. Development of regional prediction information system of coal and gas outburst[J]. Journal of Coal Science and Engineering，2006，12(1)：79–81. [2] 程五一，张序明，吴福昌. 煤与瓦斯突出区域预测理论及技术[M]. 北京：煤炭工业出版社，2005：1–2.(CHENG Wuyi，ZHANG Xuming，WU Fuchang. Theory and technology of regional prediction of coal and gas outburst[M]. Beijing：China Coal Industry Press，2005：1–2. [3] HUDECEK V. Analysis of safety precautions for coal and gas outburst-hazardous strata[J]. Journal of Mining Science，2008，44(5)：464–472. [4] 于不凡. 煤和瓦斯突出机理[M]. 北京：煤炭工业出版社，1985：1–2.(YU Bufan. The mechanism of coal and gas outburst[M]. Beijing：China Coal Industry Press，1985：1–2.(in Chinese)) [5] PATERSON L，WOLD M B. Implications from cavity completion research on the prediction and prevention of outbursts[C]// International Symposium-Workshop on Management and Control of High Gas Emissions and Outbursts in Underground Coal Mines. [S.l.]：[s.n.]，1995：251–256. [6] 尹光志，赵洪宝，许江，等. 煤与瓦斯突出模拟试验研究[J]. 岩石力学与工程学报，2009，28(8)：1 674–1 680.(YIN Guangzhi，ZHAO Hongbao，XU Jiang，et al. Experimental study of simulation of coal and gas outburst[J]. Chinese Journal of Rock Mechanics and Engineering，2009，28(8)：1 674–1 680.(in Chinese)) [7] KHODOT B B. 煤与瓦斯突出[M]. 宋士钊，王佑安，译. 北京：中国工业出版社，1966：1–2.(KHODOT B B. Coal and gas outburst[M].Translated by SONG Shizhao，WANG Youan. Beijing：China Industry Publishing Houses，1966：1–2.(in Chinese)) [8] HE X Q，ZHOU S N. Rheological hypothesis of coal and gas outburst mechanism[J]. Journal of China University of Mining and Technology，1994，4(1)：15–23. [9] 蒋承林，俞启香. 煤与瓦斯突出机制的球壳失稳假说[J]. 煤矿安全，1995，26(2)：17–25.(JIANG Chenglin，YU Qixiang. Spherical shell destabilization hypothesis on coal and gas outburst mechanism[J]. Safety in Coal Mines，1995，26(2)：17–25.(in Chinese)) [10] 孟祥跃，丁雁生，陈力，等. 煤与瓦斯突出的二维模拟实验研究[J]. 煤炭学报，1996，21(1)：57–61.(MENG Xiangyue，DING Yansheng，CHEN Li，et al. 2D simulation test of coal and gas outburst[J]. Journal of China Coal Society，1996，21(1)：57–61.(in Chinese)) [11] 许江，陶云奇，尹光志，等. 煤与瓦斯突出模拟试验台的研制与应用[J]. 岩石力学与工程学报，2008，27(11)：2 354–2 362.(XU Jiang，TAO Yunqi，YIN Guangzhi，et al. Development and application of coal and gas outburst simulation test device[J]. Chinese Journal of Rock Mechanics and Engineering，2008，27(11)：2 354–2 362.(in Chinese)) [12] 许江，陶云奇，尹光志. 煤与瓦斯突出模拟试验台的改进及应用[J]. 岩石力学与工程学报，2009，28(9)：1 804–1 809.(XU Jiang，TAO Yunqi，YIN Guangzhi. Amelioration application of coal and gas outburst simulation experiment device[J]. Chinese Journal of Rock Mechanics and Engineering，2009，28(9)：1 804–1 809.(in Chinese)) [13] 潘一山，杨小彬，王学滨. 多孔介质局部化与煤和瓦斯突出射流理论[J]. 辽宁工程技术大学学报：自然科学版，2001，20(4)：446–447.(PAN Yishan，YANG Xiaobin，WANG Xuebin. Localization of porous medium and jet theory of rockburst[J]. Journal of Liaoning Technical University：Natural Science，2001，20(4)：446–447.(in Chinese)) [14] 王维忠，陶云奇，许江，等. 不同瓦斯压力条件下煤与瓦斯突出模拟实验[J]. 重庆大学学报，2010，33(3)：82–86.(WANG Weizhong，TAO Yunqi，XU Jiang，et al. Simulation of coal and gas outburst with different gas pressures[J]. Journal of Chongqing University，2010，33(3)：82–86.(in Chinese))