高位硬厚岩层破断规律及其动力响应分析

Abstract
Figure/Table
References
Related Citation (15)

Download: PDF (1060 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract An elastic model of thin plate with three edges fixed and one simply supported was established as the mechanical model of high and thick strata of hard magmatic rock at working front 10416 in Yangliu coal mine，A flexural function and an analytic expression of stresses for the hard and thick strata were derived with Rayleigh-Ritz method. A formula of fracture span was obtained；and then a method of calculating the length of drawing pace of fracturing according to fracture morphology of overburden was proposed. The analysis of monitored results of microseism，supporting pressures and surface subsidence revealed the fracture process and the dynamic response of high and thick strata of hard rocks. The point of maximum deflection prior to fracturing of strata is at the location of and ，where a is suspension length along the strike of hard-thick strata；b is suspension length along the tendency of hard-thick strata. Fracture first happened along the dip clamper edge if a＜1.049b，along the strike clamper edge otherwise. The initial form of fracturing is “O-X” shaped，which is symmetrically along the strike but asymmetrically along the tend. Microseismicity intensified during the process of fracturing and movement of strata leading to the strong microseismicities activities to be generated and the supporting pressure and surface subsidence significantly be increased. Fracturing of high and thick strata of hard rocks causes strong dynamic response which can be analyzed and predicted by theoretical calculation and microseismic monitoring.

Key words： mining engineering high and thick strata of hard rock drawing pace of fracturing microseismicity subsidence

Received: 11 October 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/Y2014/V33/I7/1366

[1]	杜斌斌，陆菜平，刘彪，等. 火成岩下开采矿压显现规律的相似模拟研究[J]. 金属矿山，2012，41(2)：36-39.(DU Binbin，LU Caiping，LIU Biao，et al. Similar simulation research of mining pressure law under the igneous rock situation[J]. Metal Mine，2012，41(2)：36-39.(in Chinese))
[2]	钱鸣高，石平五，许家林. 矿山压力与岩层控制[M]. 徐州：中国矿业大学出版社，2010：65-99.(QIAN Minggao，SHI Pingwu，XU Jialin. Mining pressure and strata control[M]. Xuzhou：China University of Mining and Technology Press，2010：65-99.(in Chinese)) " target="_blank">
[3]	钱鸣高，缪协兴，许家林，等. 岩层控制的关键层理论[M]. 徐州：中国矿业大学出版社，2003：10-18.(QIAN Minggao，MIAO Xiexing，XU Jialin，et al. Key strata theory on strata control[M]. Xuzhou：China University of Mining and Technology Press，2003：10-18.(in Chinese)) " target="_blank">
[4]	谭云亮，宁建国，顾士坦，等. 矿山压力与岩层控制[M]. 北京：煤炭工业出版社，2011：13-14.(TAN Yunliang，NING Jianguo，GU Shitan，et al. Mining pressure and strata control[M]. Beijing：China Coal Industry Publishing House，2011：13-14.(in Chinese)) " target="_blank">
[5]	蒋金泉. 采场围岩应力与运动[M]. 北京：煤炭工业出版社，1993：9-74.(JIANG Jinquan. Mining stope surrounding rock stress and movement[M]. Beijing：China Coal Industry Publishing House，1993：9-74.(in Chinese)) " target="_blank">
[6]	王平，姜福兴，冯增强，等. 高位厚硬顶板断裂与矿震预测的关系探讨[J]. 岩土工程学报，2011，33(4)：618-623.(WANG Ping，JIANG Fuxing，FENG Zengqiang，et al. Relationship between fracture of high-position thick and hard roof and mine quake forecast[J]. Chinese Journal of Geotechnical Engineering，2011，33(4)：618-623.(in Chinese))
[7]	黄耀光，浦海. 不同边界下的坚硬顶板极限承载分析及破断距确定[J]. 煤矿开采，2012，17(2)：12-16.(HUANG Yaoguang，PU Hai. Analysis of roof limit load and broken pace under different boundary conditions[J]. Coal Mining Technology，2012，17(2)：12-16.(in Chinese))
[8]	王晓亮，窦林名，李凤荣，等. 采空区上方巨厚硬岩破断的力学分析[J]. 煤炭科学技术，2009，34(2)：13-15.(WANG Xiaoliang，DOU Linming，LI Fengrong，et al. Mechanical analysis of thick hard rock breaking above goaf[J]. Coal Science and Technology，2009，34(2)：13-15.(in Chinese))
[9]	贺虎，窦林名，巩思园，等. 覆岩关键层运动诱发冲击的规律研究[J]. 岩土工程学报，2010，32(8)：1 260-1 265.(HE Hu，DOU Linming，GONG Siyuan，et al. Rock burst rules induced by cracking of overlying key stratum[J]. Chinese Journal of Geotechnical Engineering，2010，32(8)：1 260-1 265.(in Chinese))
[10]	刘人怀. 板壳力学[M]. 北京：机械工业出版社，1990：71-111.(LIU Renhuai. Plate and shell mechanics[M]. Beijing：China Machine Press，1990：71-111.(in Chinese)) " target="_blank">
[11]	贾喜荣. 岩石力学与岩层控制[M]. 徐州：中国矿业大学出版社，2010：253-300.(JIA Xirong. Rock mechanics and strata control[M]. Xuzhou：China University of Mining and Technology Press，2010：253-300.(in Chinese)) " target="_blank">
[12]	张益东，程敬义，王晓溪，等. 大倾角仰(俯)采采场顶板破断的薄板模型分析[J]. 采矿与安全工程学报，2010，27(4)：487-493. (ZHANG Yidong，CHENG Jingyi，WANG Xiaoxi，et al. Thin plate model analysis of roof break of up-dip or down-dip mining stope[J]. Journal of Mining and Safety Engineering，2010，27(4)：487-493.(in Chinese)) " target="_blank">
[13]	蒋金泉，张开智. 综放开采矿震的成因及防治对策[J]. 岩石力学与工程学报，2006，25(增1)：3 276-3 282.(JIANG Jinquan，ZHANG Kaizhi. Cause and control method of mine earthquake in fully mechanized top coal caving mining[J]. Chinese Journal of Rock Mechanics and Engineering，2006，25(Supp.1)：3 276-3 282.(in Chinese))
[14]	郑怀昌，张晓君. 冒落型矿震能量确定探讨[J]. 金属矿山，2006，35(7)：24-26.(ZHENG Huaichang，ZHANG Xiaojun. Investigation on energy determination for cave-in type mining tremor[J]. Metal Mine，2006，35(7)：24-26.(in Chinese))
[15]	SLAWOMIR J G，ANDRZEJ K. 矿山地震学引论[M]. 修济刚译. 北京：地震出版社，1998：283-315.(SLAWOMIR J G，ANDRZEJ K. An introduction to mining seismology[M]. Translated by XIU Jigang. Beijing：Earthquake Publish House，1998：283-315.(in Chinese)) " target="_blank">
[16]	何江，窦林名，贺虎，等. 综放面覆岩运动诱发冲击矿压机制研究[J]. 岩石力学与工程学报，2011，30(增2)：3 920-3 927.(HE Jiang，DOU Linming，HE Hu，et al. Mechanism study of overlying strata movement inducing rock burst on top-coal caving face[J]. Chinese Journal of Rock Mechanics and Engineering，2011，30(Supp.2)：3 920-3 927.(in Chinese))
[17]	卢新伟，窦林名，王国瑞，等. 巨厚火成岩下矿震分布特征分析[J]. 煤炭工程，2010，60(7)：54-57.(LU Xinwei，DOU Linming，WANG Guorui，et al. Analysis of mine seismic distribution features under ultra thick igneous rock[J]. Coal Engineering，2010，60(7)：54-57.(in Chinese))