弹性基础边界基本顶板结构周期破断与全区域反弹时空关系

doi:10.13722/j.cnki.jrme.2018.0923

Abstract
Figure/Table
References (0)
Related Citation (15)

Download: PDF (773 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract In order to put forward an early warning method of roof cutting disasters with a large area caused by periodic fracturing of the main roof，the time-space relationship between periodic fracture of the plate structure of the main roof and rebound compression field formed by periodic fracturing in whole roof area was studied based on theoretical calculation，similarity simulation and engineering practice. The results show that，when the periodic fracture of the plate structure of the main roof with elastic foundation boundary occurs ahead of the coal wall，four zones including semi-ellipse rebound zone (I)，C-type compression zone，C-type rebound zone (II) and C-type compression zone will be generated in turn on the periphery of the fracture line. The rebound amount in the central region of rebound zone (I) in front of the fracture line is the largest，and the compression zone is located at the end region of the fracture line. The distance between the inner and outer boundary lines of the rebound zone (II) almost keeps constant，and the rebound amount in rebound zone (II) increases firstly and then decreases. The morphology of the rebound compression zone generated by the graded fracturing is obviously different from that generated by the one-off fracturing. The greater the fracture degree of main roof strata is，the larger the rebound amount of the plate structure of the main roof will be. However，the fracture degree of main roof strata has no obvious influence on the distribution form of the rebound compression zone. Due to that the rebound zone (II) encircles the entire “hanging roof area”，the rebound compression information generated by periodic fracturing of the main roof ahead of the coal wall can be detected in the two roadway regions and adjacent roadway regions. Furthermore，the correctness of the conclusions has been verified by similarity simulation experiment using the special high-precision displacement sensor and engineering practice. An early warning system of roof cutting disasters with a large area caused by periodic fracturing of the main roof，including one synchronization，two delays，two zones，two indexes and two controls，is formed.

Key words： mining engineering main roof elastic foundation rebound compression periodic fracture elastic thin plate

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	CHEN Dongdong
	HE Fulian
	XIE Shengrong
	ZENG Junchao

Cite this article:

CHEN Dongdong,HE Fulian,XIE Shengrong, et al. Time-space relationship between periodic fracture of plate structure of main roof and rebound in whole region with elastic foundation boundary[J]. , 2019, 38(6): 1172-1187.

URL:

https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2018.0923 OR https://rockmech.whrsm.ac.cn/EN/Y2019/V38/I6/1172

[1]	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，2010：93-99，103-106.(QIAN Minggao，SHI Pingwu，XU Jialin. Mining pressure and strata control[M]. Xuzhou：China University of Mining and Technology Press，2010：93-99，103-106.(in Chinese))
[2]	何富连，赵计生，姚志昌. 采场岩层控制论[M]. 北京：冶金工业出版，2009：27-33.(HE Fulian，ZHAO Jisheng，YAO Zhichang. The theory of rock stratum control in the stope[M]. Beijing：Metallurgical Industry Publishing，2009：27-33.(in Chinese))
[3]	安泽，张江云. 煤矿综采工作面顶板灾害预警指标及应用研究[J]. 煤炭科学技术，2015，43(5)：37-41.(AN Ze，ZHANG Jiangyun. Study on early warning index of roof disaster and application to fully-mechanized coal mining face in underground mine[J]. Coal Science and Technology，2015，43(5)：37-41.(in Chinese))
[4]	秦兵文，谢福星. 采场顶板灾变机理及预警系统[J]. 煤矿安全，2018，49(5)：124-127.(QIN Bingwen，XIE Fuxing. Disaster mechanism and early warning system of stope roof[J]. Safety in Coal Mines，2018，49(5)：124-127.(in Chinese))
[5]	黄庆享，钱鸣高，石平五. 浅埋煤层采场老顶周期来压的结构分析[J]. 煤炭学报，1999，24(6)：581-585.(HUANG Qingxiang，QIAN Minggao，SHI Pingwu. Structural analysis of main roof stability during periodic weighting in longwall face[J]. Journal of China Coal Society，1999，24(6)：581-585.(in Chinese))
[6]	史红，姜福兴，汪华君. 综放采场周期来压阶段顶板结构稳定性与顶煤放出率的关系[J]. 岩石力学与工程学报，2015，24(23)：4 233-4 238.(SHI Hong，JIANG Fuxing，WANG Huajun. Study on relationship between roof stability and top coal¢s recovery ratio during cyclic weighting in fully-mechanized Sublevel caving face[J]. Chinese Journal of Rock Mechanics and Engineering，2015，24(23)：4 233-4 238.(in Chinese))
[7]	王晓振，许家林，朱卫兵，等. 浅埋综采面高速推进对周期来压特征的影响[J]. 中国矿业大学学报，2012，41(3)：349-354.(WANG Xiaozhen，XU Jialin，ZHU Weibing，et al. Influence of high mining velocity on periodic weighting during fully-mechized mining in a shallow seam[J]. Journal of China University of Mining and Technology，2012，41(3)：349-354.(in Chinese))
[8]	王红卫，陈忠辉，杜泽超，等. 弹性薄板理论在地下采场顶板变化规律研究中的应用[J]．岩石力学与工程学报，2006，25(增2)：3 769-3 774.(WANG Hongwei，CHEN Zhonghui，DU Zechao，et al. Application ofelastic thin plate theory to change rule of roof in underground stope[J]. Chinese Journal of Rock Mechanics and Enginering，2006，25(Supp.2)：3 769-3 774.(in Chinese))
[9]	王金安，张基伟，高小明，等. 大倾角厚煤层长壁综放开采基本顶破断模式及演化过程(II)——周期破断[J]. 煤炭学报，2015，40(8)：1 737-1 745.(WANG Jinan，ZHANG Jiwei，GAO Xiaoming，et al. Fracture mode and evolution of main roof stratum above fully mechanized top coal caving longwall coalface in steeply inclined thick coal seam(II)：Periodic fracture[J]. Journal of China Coal Society，2015，40(8)：1 737-1 745.(in Chinese))
[10]	钱鸣高，赵国景. 老顶断裂前后的矿山压力变化[J]. 中国矿业学院学报，1986，(4)：14-22.(QIAN Minggao，ZHAO Guojing. The influence of the fracture of the main roof on the mining ground pressure[J]. Journal of China Institute of Mining，1986，(4)：14-22.(in Chinese))
[11]	朱德仁. 长壁工作面老顶的破断规律及其应用[博士学位论文][D] .徐州：中国矿业大学，1987.(ZHU Deren. Fracturing law and its application of the main roof of long wall working face[Ph. D. Thesis][D]. Xuzhou：China University of Mining and Technology，1987.(in Chinese))
[12]	蒋金泉. 老顶周期断裂及顶板来压预报[J]. 山东矿业学院学报，1989，8(2)：1-8.(JIANG Jinquan. The periodic fracture of main roof and the prediction of roof weighting[J]. Journal of Sangdong Mining Institute，1989，8(2)：1-8.(in Chinese))
[13]	刘保国. “反弹”的机理影响因素及其应用[J]. 山东矿业学院学报，1989，8(4)：13-17.(LIU Baoguo. The mechanism and influence factores of “recoil” and its application[J]. Journal of Shandong Mining Institute，1989，8(4)：13-17.(in Chinese))
[14]	FU G B，QIAN M G. Application of the roof disturbance to monitoring and predicting the ground pressure[J]. Journal of China University of Mining and Technology，1992，3(1)：74-82.
[15]	蒋金泉，谭云亮，宋扬. 支承压力显现的动态规律与来压预报方法[J]. 工程地质学报，1994，2(3)：72-80.(JIANG Jinquan，TAN Yunliang，SONG Yang. The dynamic law of abutment pressure manifestation and the forecasting method of roof weighting[J]. Journal of Engineering Geology，1994，2(3)：72-80.(in Chinese))
[16]	谭云亮，杨永杰. 反弹的机理及工程意义[J]. 力学与实践，1996，18(2)：21-23.(TAN Yunliang，YANG Yongjie. The mechanism of bounce and its engineering significance[J]. Mechanics and Practice，1996，18(2)：21-23.(in Chinese))
[17]	马庆云，赵晓东，宋振骐. 采场老顶岩梁的超前破断与矿山压力[J]. 煤炭学报，2001，26(5)：473-477.(MA Qingyun，ZHAO Xiaodong，SONG Zhenqi. Break of main roof ahead of workface and ground pressure[J]. Journal of China Coal Society，2001，26(5)：473-477.(in Chinese))
[18]	潘岳，顾士坦，杨光林. 裂纹发生初始阶段的坚硬顶板内力变化和“反弹”特性分析[J]. 岩土工程学报，2015，37(5)：860-869.(PAN Yue，GU Shitan，YANG Guanglin. Variationo finternal forceand rebound property of hard roof atinitial stageo fcracking[J]. Chinese Journal of Geotechnical Engineering，2015，37(5)：860-869.(in Chinese))
[19]	何富连，陈冬冬，谢生荣. 弹性基础边界基本顶薄板初次破断的kDL效应[J]. 岩石力学与工程学报，2017，36(6)：1 384-1 399.(HE Fulian，CHEN Dongdong，XIE Shengrong. The kDL effect on the first fracture of main roof with elastic foundation boundary[J]. Chinese Journal of Rock Mechanics and Engineering，2017，36(6)：1 384-1 399.(in Chinese))
[20]	谢生荣，陈冬冬，何尚森，等. 基本顶弹性基础边界薄板模型分析(II)——周期破断[J]. 煤炭学报，2017，42(12)：3 106-3 115.(XIE Shengrong，CHEN Dongdong，HE Shangsen，et al. Analysis on thin plate model of main roof with elastic foundation boundary(II)：Periodic fracture[J]. Journal of China Coal Society，2017，42(12)：3 106-3 115.(in Chinese))
[21]	徐芝纶. 弹性力学[M]. 北京：高等教育出版社，2006：48-53.(XU Zhilun. Elastic mechanics[M]. Beijing：Higher Education Press，2006：48-53.(in Chinese))
[22]	李荣华. 偏微分方程数值解法[M]. 2版. 北京：高等教育出版社，2010：10-60.(LI Ronghua. Numerical solution of partial differential equation[M]. 2nd ed. Beijing：Higher Education Press，2010：10-60.(in Chinese))
[23]	艾冬梅，李艳晴，张丽静，等. MATLAB与数学实验[M]. 北京：机械工业出版社，2016：88-89.(AI Dongmei，LI Yanqing，ZHANG Lijing，et al. Matlab and mathematical experiments[M]. Beijing：Machinery Industry Press，2016：88-89.(in Chinese))