基于模糊聚类分析法的巷道围岩稳定性分类
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摘要
影响巷道围岩稳定性的因素众多,关系复杂。如何选取有效影响因素,对巷道围岩进行定量分析,一直是围岩稳定性分类的研究热点。针对晋北某煤矿I031001工作面回采巷道支护效果不甚理想,以以往工程实践中已有分类结果较为理想的25条巷道作为样本,依据顶板强度、煤层强度、底板强度、深度、直接顶初次垮落步距、直接顶厚度与采高比值及护巷煤柱宽度等指标,根据模糊聚类理论,建立了定量判别模型,在对模型进行验证的基础上,对工作面围岩的稳定性进行了分类。
The factors affecting the stability of roadway surrounding rock are numerous and complex. How to choose the effective influencing factors and quantitative analysis of roadway surrounding rock has always been the research focus of stability classification of surrounding rock. In view of the unsatisfactory support effect of the mining roadway in the working face of a coal mine in Jinbei,25 roadways with satisfactory classification results have been taken as samples in the past engineering practice. Based on such indicators as top plate strength,coal seam strength,bottom plate strength,depth,first fall step of direct top,ratio of direct top thickness to mining height,and width of coal pillar protection,a quantitative discriminant model is established based on fuzzy clustering theory. On the basis of verification of the model,the stability of the surrounding rock in the working face is classified.
The factors affecting the stability of roadway surrounding rock are numerous and complex. How to choose the effective influencing factors and quantitative analysis of roadway surrounding rock has always been the research focus of stability classification of surrounding rock. In view of the unsatisfactory support effect of the mining roadway in the working face of a coal mine in Jinbei,25 roadways with satisfactory classification results have been taken as samples in the past engineering practice. Based on such indicators as top plate strength,coal seam strength,bottom plate strength,depth,first fall step of direct top,ratio of direct top thickness to mining height,and width of coal pillar protection,a quantitative discriminant model is established based on fuzzy clustering theory. On the basis of verification of the model,the stability of the surrounding rock in the working face is classified.
引文
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[8]石永奎,张景煜,王文正,等.回采巷道围岩稳定性的分类预测方法分析[J].煤炭技术,2015,34(7):46-49.
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[10]刘洋,叶义成,刘晓云,等.基于未确知聚类法的巷道围岩稳定性预测[J].中国安全生产科学技术,2017,13(2):56-61.
[11]赵国彦,吴浩.未确知聚类方法及其在松动圈厚度预测中的应用[J].科技导报,2013,31(2):50-55.
[2]李士勇.工程模糊数学及应用[M].哈尔滨:哈尔滨工业大学出版社,2004.
[3]苏永华,何满潮,孙晓明.岩体模糊分类中隶属函数的等效性[J].北京科技大学学报,2007,29(7):670-675.
[4]郭文兵,刘义新,李小双.采动影响下建筑物损害程度的模糊聚类分析[J].采矿与安全工程学报,2007,24(3):288-292.
[5]申艳梅,韦四江.回采巷道锚杆支护效果模糊综合评判[J].采矿与安全工程学报,2011,28(4):576-580.
[6]邢丽花.基于多因素模糊聚类的底板突水危险性预测研究[D].青岛:山东科技大学,2011.
[7]靖洪文,吴俊浩,马波,等.基于模糊灰色系统的深部巷道围岩变形预测模型及应用[J].煤炭学报,2012,37(7):1 099-1 104.
[8]石永奎,张景煜,王文正,等.回采巷道围岩稳定性的分类预测方法分析[J].煤炭技术,2015,34(7):46-49.
[9]朱兰洋,乔兰,赵存厚,等.基于模糊聚类分析的回采巷道围岩分类与支护研究[J].中国矿业,2008,17(8):77-80.
[10]刘洋,叶义成,刘晓云,等.基于未确知聚类法的巷道围岩稳定性预测[J].中国安全生产科学技术,2017,13(2):56-61.
[11]赵国彦,吴浩.未确知聚类方法及其在松动圈厚度预测中的应用[J].科技导报,2013,31(2):50-55.