工作面动压影响下老窑破坏区煤柱应力状态研究

doi:10.13722/j.cnki.jrme.2014.10.012

Abstract
Figure/Table
References
Related Citation (15)

Download: PDF (14584 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract The field investigation of the geological conditions，the physico-mechanical characteristics of the surrounding rock and the hydrological conditions of mining areas in Fenxi，together with an intensive geological detection with the method of transient electromagnetic in the typical failure zones in Xinliu coal mine was carried out. A similarity model of the failure zones was developed based on the results of the geological detection and the stress state in the pillar affected by the dynamic pressure during mining was studied. The stress state of pillar changes little and remains the initial state within a period of time in the process of longwall mining. The increase of pillar stress occurs firstly at the distance of 62.5 m ahead of the working face，while a significant accumulation appears at the pillar 12.5–25.0 m ahead of the longwall mining face. In the process of pillar extraction，the high compression stress controls the elastic core in the pillar and remains at a high level under the effect of dynamic pressure. Meanwhile，the elastic core moves forward along with the advancing of the longwall mining face and bring about the severe risks to the coal mine. Therefore，the elastic core should be destroyed by pre-unloading，so as to ensure the safety in pillar extraction.

Key words： mining engineering coal pillar failure zone transient electromagnetic method similarity simulation elastic pillar core

Received: 12 December 2013

	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/10.13722/j.cnki.jrme.2014.10.012 OR https://rockmech.whrsm.ac.cn/EN/Y2014/V33/I10/2056

[1]	白晓生. 新柳煤矿大断面切巷过空巷技术研究[J]. 煤炭工程，2010，56(5)：35-37.(BAI Xiaosheng. Study on the technology of cutting roadway when crossing the abandoned roadway[J]. Coal Engineering，2010，56(5)：35-37.(in Chinese))
[2]	翟新献，钱鸣高，李化敏，等. 小煤矿复采煤柱塑性区特征及采准巷道支护技术[J]. 岩石力学与工程学报，2004，23(22)：3 799-3 802. (ZHAI Xinxian，QIAN Minggao，LI Huamin，et al. Characteristics of plastic zone of second mining pillar and support technology of gateway in small mines[J]. Chinese Journal of Rock Mechanics and Engineering，2004，23(22)：3 799-3 802.(in Chinese))
[3]	薛国强，李貅，底青云. 瞬变电磁法理论与应用研究进展[J]. 地球物理学进展，2007，22(4)：1 195-1 200.(XUE Guoqiang，LI Xiu，DI Qingyun. The progress of TEM in theory and application[J]. Progress in Geophysics，2007，22(4)：1 195-1 200.(in Chinese)) " target="_blank">
[4]	白登海，MEJU M A，卢健，等. 时间域瞬变电磁法中心方式全程视电阻率的数值计算[J]. 地球物理学报，2003，46(5)：697-704.(BAI Denghai，MEJU M A，LU Jian，et al. Numerical calculation of all-time apparent resistivity for the central loop transient electromagnetic method[J]. Chinese Journal of Geophysics，2003，46(5)：697-704.(in Chinese))
[5]	张运霞，韩自豪，周建雄，等. PROT EM67D 瞬变电磁仪器在矿井水文地质勘探中的应用效果[J]. 工程地球物理学报，2005，2(2)：123-128.(ZHANG Yunxia，HAN Zhihao，ZHOU Jianxiong，et al. The application effect of mining hydrogeological exploration using PROT EM67D system[J]. Chinese Journal of Engineering Geophysics，2005，2(2)：123-128.(in Chinese)) " target="_blank">
[6]	姜耀东，赵毅鑫，刘文岗，等. 深部开采中巷道底臌问题的研究[J]. 岩石力学与工程学报，2004，23(7)：2 396-2 401.(JIANG Yaodong，ZHAO Yixin，LIU Wengang，et al. Research on floor heave of roadway in deep mining[J]. Chinese Journal of Rock Mechanics and Engineering，2004，23(7)：2 396-2 401.(in Chinese)) " target="_blank">
[7]	姜耀东，刘文岗，赵毅鑫，等. 开滦矿区深部开采中巷道围岩稳定性研究[J]. 岩石力学与工程学报，2005，24(11)：1 857-1 862. (JIANG Yaodong，LIU Wengang，ZHAO Yixin，et al. Study of surrounding rock stability of deep mining in Kailuan mining group[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(11)：1 857-1 862.(in Chinese))
[8]	姜耀东，陆士良. 巷道底臌机制的研究[J]. 煤炭学报，1994，19(4)：344-350.(JIANG Yaodong，LU Shiliang. Investigation of mechanism of floor heave of roadway[J]. Journal of China Coal Society，1994，19(4)：344-350.(in Chinese)) " target="_blank">
[9]	周宏伟，谢和平，董正亮，等. 深部软岩巷道喷射钢纤维混凝土支护技术[J]. 工程地质学报，2001，9(4)：393-398.(ZHOU Hongwei，XIE Heping，DONG Zhengliang，et al. Support technique of steel fiber shotcrete for soft rock tunnel at great depth[J]. Journal of Engineering Geology，2001，9(4)：393-398.(in Chinese))
[10]	王存文，姜福兴，王平，等. 煤柱诱发冲击地压的微震事件分布特征与力学机制[J]. 煤炭学报，2009，34(9)：1 169-1 173.(WANG Cunwen，JIANG Fuxing，WANG Ping，et al. Microseismic events distribution characteristics and mechanical mechanisms of rock bursting induced by a coal pillar[J]. Journal of China Coal Society，2009，34(9)：1 169-1 173.(in Chinese)) " target="_blank">
[11]	刘金海，姜福兴，王乃国，等. 深井特厚煤层综放工作面区段煤柱合理宽度研究[J]. 岩石力学与工程学报，2012，31(5)：921-927.(LIU Jinhai，JIANG Fuxing，WANG Naiguo，et al. Research on reasonable width of segment pillar of fully mechanized caving face in extra-thick coal seam of deep shaft[J]. Chinese Journal of Rock Mechanics and Engineering，2012，31(5)：921-927.(in Chinese))
[12]	谢广祥，杨科，刘全明，等. 综放面倾向煤柱支承压力分布规律研究[J]. 岩石力学与工程学报，2006，25(3)：545-549.(XIE Guangxiang，YANG Ke，LIU Quanming，et al. Study on distribution laws of stress in inclined coal pillar for fully-mechanized top-coal caving face[J]. Chinese Journal of Rock Mechanics and Engineering，2006，25(3)：545-549.(in Chinese))
[13]	王同旭，刘传孝，王小平. 孤岛煤柱侧向支承压力分布的数值模拟与雷达探测研究[J]. 岩石力学与工程学报，2002，21(增2)：2 484-2 487.(WANG Tongxu，LIU Chuanxiao，WANG Xiaoping. FLAC3D numerical simulation and radar detection of lateral abutment pressure distribution of isolated coal pillar[J]. Chinese Journal of Rock Mechanics and Engineering，2002，21(Supp.2)：2 484-2 487.(in Chinese))