Zhang Lingfan, Chen Zhonghui, Li Bo, Guo He, Chai Mao. Catastrophic analysis of roof cut-off disasters in proximity to coal seam beneath a room mining goaf[J]. Journal of Mining Science and Technology, 2016, 1(3): 236-242.
Citation: Zhang Lingfan, Chen Zhonghui, Li Bo, Guo He, Chai Mao. Catastrophic analysis of roof cut-off disasters in proximity to coal seam beneath a room mining goaf[J]. Journal of Mining Science and Technology, 2016, 1(3): 236-242.

Catastrophic analysis of roof cut-off disasters in proximity to coal seam beneath a room mining goaf

  • Received Date: 2016-06-13
  • Publish Date: 2016-12-28
  • Aiming at the support crushing disasters in proximity to coal seam beneath a room mining goaf caused by the different pressure time of the roof above pillars and the immediate roof,according to the nonlinear variation of the pillars’ instability failure under the influence of the overlying load,a system mechanics model composed of roof-pillars-gangue was established.In addition,by using the cusp catastrophe theory,the instability mechanisms of the system under the linear loads were studied,the necessary sufficient condition for instability failure of the system and the formula of the jump value and the releasing energy of displacement of pillars were gained,and the main factors for instability failure of the system were analyzed.The results show that the unstable failure of pillars leads to the support crushing disasters.By using the energy method,the attacking dynamic factor and the working resistance of support were calculated.The rationality of the theoretical derivation has been verified by an engineering example.
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  • [1]
    解兴智.浅埋煤层房柱式采空区下长壁开采矿压显现特征[J].煤炭学报,2012,37(6):898-902.
    [2]
    Xie Xingzhi.Shallow coal pillar under goaf ground pressure characteristics of long wall mining[J].Journal of China Coal Society,2012,37(6):898-902.
    [3]
    许家林,朱卫兵,鞠金峰.浅埋煤层开采压架类型[J].煤炭学报,2014,39(8):1625-1634.
    [4]
    Xu Jialin,Zhu Weibing,Ju Jinfeng.Supports crushing types in the longwall mining of shallow seams[J].Journal of China Coal Society,2014,39(8):1625-1634.
    [5]
    杨登峰,陈忠辉,洪钦锋,等.浅埋煤层开采顶板切落压架灾害的突变分析[J].采矿与安全工程学报,2016,33(1):122-133.
    [6]
    Yang Dengfeng,Chen Zhonghui,Hong Qinfeng,et al.Catastrophic analysis of support crushing disasters while roof cutting in shallow seam mining[J].Journal of Mining & Safety Engineering,2016,33(1):122-133.
    [7]
    徐曾和,徐小荷,陈忠辉.孤立煤柱岩爆的尖点突变与时间效应[J].西部探矿工程,1996(4):1-5,14.
    [8]
    Xu Zenghe,Xu Xiaohe,Chen Zhonghui.Isolated pillar rock burst catastrophic and time effect[J].West-china Exploration Engineering,1996(4):1-5,14.
    [9]
    徐曾和,徐小荷,唐春安.坚硬顶板下煤柱岩爆的尖点突变理论分析[J].煤炭学报,1995,20(5):485-491.
    [10]
    Xu Zenghe,Xu Xiaohe,Tang Chun’an.Theoretical analysis of a cusp catastrophe bump of coal pillar under hard rocks[J].Journal of China Coal Society,1995,20(5):485-491.
    [11]
    刘贵,张华兴,徐乃忠.煤柱-顶板系统失稳的突变理论模型研究[J].中国矿业,2008,17(4):101-103.
    [12]
    Liu Gui,Zhang Huaxing,Xu Naizhong.Study on catastrophic theory model of instability of coal pillar and roof system[J].China Mining Magazine,2008,17(4):101-103.
    [13]
    秦四清,何怀锋.狭窄煤柱冲击地压失稳的突变理论分析[J].水文地质工程地质,1995,18(5):17-20.
    [14]
    Qin Siqing,He Huaifeng.The study of rock burst on narrow coal pillar by the catastrophe theory[J].Hydrogeology and Engineering Geology,1995,18(5):17-20.
    [15]
    李江腾,曹平.非对称开采时矿柱失稳的尖点突变模型[J].应用数学和力学,2005,26(8): 1003-1008.
    [16]
    Li Jiangteng,Cao Ping.Cusp catastrophe model of instability of pillar in asymmetric mining[J].Applied Mathematics and Mechanic,2005,26(8):1003-1008.
    [17]
    王方田.浅埋房式采空区下近距离煤层长壁开采覆岩运动规律及控制[D].徐州:中国矿业大学,2012.
    [18]
    王方田,陈芳,白庆升,等.浅埋房式采空区下煤层长壁综采矿压规律研究[J].中国煤炭,2012,38(5):66-69.
    [19]
    Wang Fangtian,Chen Fang,Bai Qingsheng,et al.Study seam longwall mining pressure law shallow-room goaf[J].Chinese Coal,2012,38(5):66-69.
    [20]
    王方田,屠世浩,李召鑫,等.浅埋煤层房式开采遗留煤柱突变失稳机理研究[J].采矿与安全工程学报,2012,29(6):770-775.
    [21]
    Wang Fangtian,Tu Shihao ,Li Zhaoxin,et al.Mutation instability mechanism of the room mining residual pillars in the shallow depth seam[J].Journal of Mining & Safety Engineering,2012,29(6):770-775.
    [22]
    Krajcinovie C,Silva M A G.Statistical aspects of continuous damage theory[J].Solids Structures,1982,18(7):557-562.
    [23]
    唐春安,徐小荷.岩石破裂过程失稳的尖点灾变模型[J].岩石力学与工程学报,1990,9(2):100-107.
    [24]
    Tang Chun’an,Xu Xiaohe.A cusp catastrophic model of rock unstable failure[J].Chinese Journal of Rock Mechanics and Engineering,1990,9(2):100-107.
    [25]
    Saunders P T.突变理论入门[M].凌复华,译.上海:上海科学技术和文献出版社,1983.
    [26]
    陈忠辉,唐春安,傅宇方.岩石失稳破裂的变形突跳研究[J].工程地质学报,1997,5(2):143-149.
    [27]
    Chen Zhonghui,Tang Chun’an,Fu Yufang.Study on sudden jump of deformation in unstable failure of rocks[J].Journal of Engineering Geology,1997,5(2):143-149.
    [28]
    王家臣.厚煤层开采理论与技术[M].北京:冶金工业出版社,2009:1-30. 
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