基于改进灰关联分析和熵权法的开采区域划定
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摘要
为划定厚松散含水层薄基岩下煤层安全开采区域,降低煤层开采的安全风险,通过分析国内外大量薄基岩厚松散含水层下煤层开采的工程案例,选取导水断裂带高度、厚松散层底部含水层单位涌水量、采高、厚松散层底部黏土层厚度、以及覆岩厚度5个指标作为煤层安全开采区域划定的基础指标,并以导水断裂带高度与采高平方根之比、底部含水层单位涌水量、底部黏土层层厚与采高之比以及覆岩厚度与采高平方根之比作为评价因子,将厚松散含水层薄基岩下采煤的综合安全性划分为5个等级。通过将熵权理论引入改进的灰关联分析法中,建立综合评价模型,对某矿厚松散含水层薄基岩下煤层安全开采区域进行了划定。结果表明,应用该模型划定的煤层安全开采等级与实际等级完全吻合。
In order to delimit the safe mining area of coal seam under thick loose aquifer and thin bedrock and reduce the safety risk of coal seam mining,by analyzing the coal mining cases under thick and loose aquifers of thin bedrock,the authors selects 5 indexes,including the height of water conducted zone,the unit water inflow of the bottom aquifer in the thick and loose layer,mining height,the thickness of clay layer at the bottom of thick loose layer and overburden thickness,as the basic indexes for the regional assignment of safety coal mining,and make the regional assignment of safety coal mining based on improved grey correlation analysis and entropy weight method by dividing the comprehensive safety into 5 grades by taking the ratio of the height of water conducted zone and the square root of mining height,the unit water inflow at the bottom aquifer,the ratio of layer thickness of bottom clay and mining height,and the ratio of the thickness of overlying rock and the square root of mining height as evaluation factors.
In order to delimit the safe mining area of coal seam under thick loose aquifer and thin bedrock and reduce the safety risk of coal seam mining,by analyzing the coal mining cases under thick and loose aquifers of thin bedrock,the authors selects 5 indexes,including the height of water conducted zone,the unit water inflow of the bottom aquifer in the thick and loose layer,mining height,the thickness of clay layer at the bottom of thick loose layer and overburden thickness,as the basic indexes for the regional assignment of safety coal mining,and make the regional assignment of safety coal mining based on improved grey correlation analysis and entropy weight method by dividing the comprehensive safety into 5 grades by taking the ratio of the height of water conducted zone and the square root of mining height,the unit water inflow at the bottom aquifer,the ratio of layer thickness of bottom clay and mining height,and the ratio of the thickness of overlying rock and the square root of mining height as evaluation factors.
引文
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[13]代长青,宣以琼,杨本水.含水松散层下风氧化带内煤层安全开采技术[J].煤炭科学技术,2007,35(7):22-26.
[14]陈玉岭,高荣久,周锦华,等.在地表大型水体及巨厚含水松散层下综放采煤[J].矿山测量,2006(1):79-81.
[15]曾佳龙,刘琼,黄锐,等.基于未确知测度理论的薄基岩厚松散含水层下煤层安全开采区域划定[J].采矿与安全工程学报,2015,32(6):898-904.
[16]王文学,隋旺华,赵庆杰,等.可拓评判方法在厚松散层薄基岩下煤层安全开采分类中的应用[J].煤炭学报,2012,37(11):1783-1789.
[17]刘万茹,朱湖银.改进的灰关联度分析法在水质评价中的应用[J].合肥工业大学学报,1999,22(2):87-91.
[2]杨伟峰.薄基岩采动破断及其诱发水砂混合流运移特性研究[D].徐州:中国矿业大学,2009.
[3]李振华,丁鑫品,程志恒.薄基岩煤层覆岩裂隙演化的分形特征研究[J].采矿与安全工程学报,2010,27(4):576-580.
[4]隋旺华,梁艳坤,张改玲,等.采掘中突水溃砂机理研究现状及展望[J].煤炭科学技术,2011,39(11):5-9.
[5]王怀玉,牟允军,曾现营.安全煤岩柱性能研究及综合评价[J].安全与环境学报,2006,6(增刊1):86-89.
[6]郭惟嘉,陈绍杰,李法柱.厚松散层薄基岩条带法开采采留尺度研究[J].煤炭学报,2006,31(6):747-751.
[7]任启寒.厚松散含水层下薄基岩采场水-岩賴合致灾机理研究[D].合肥:安徽理工大学,2017.
[8]张坤.基于组合客观赋权法的厚松散层采动水砂突涌危险性评价[D].山东:山东科技大学,2017.
[9]熊法政.厚松散层薄基岩下煤层开采综合防治水研究--以赵家寨煤矿12采区为例[D].河南:河南理工大学硕士学位论文,2017.
[10]郭忠平,文志杰,王付清.厚冲积层下厚煤层分层开采提高开采上限的研究[J].煤炭学报,2008,33(11):1220-1223.
[11]涂敏,桂和荣,李明好,等.厚松散层及超薄覆岩厚煤层防水煤柱开采试验研究[J].岩石力学与工程学报,2004,23(20):3494-3497.
[12]钱鸣髙,石平五,许家林.矿山皮力与岩层控制[M].徐州:中国矿业大学出版社,2010.
[13]代长青,宣以琼,杨本水.含水松散层下风氧化带内煤层安全开采技术[J].煤炭科学技术,2007,35(7):22-26.
[14]陈玉岭,高荣久,周锦华,等.在地表大型水体及巨厚含水松散层下综放采煤[J].矿山测量,2006(1):79-81.
[15]曾佳龙,刘琼,黄锐,等.基于未确知测度理论的薄基岩厚松散含水层下煤层安全开采区域划定[J].采矿与安全工程学报,2015,32(6):898-904.
[16]王文学,隋旺华,赵庆杰,等.可拓评判方法在厚松散层薄基岩下煤层安全开采分类中的应用[J].煤炭学报,2012,37(11):1783-1789.
[17]刘万茹,朱湖银.改进的灰关联度分析法在水质评价中的应用[J].合肥工业大学学报,1999,22(2):87-91.