膏体充填回收条带煤柱覆岩活化规律研究
Study on Activation Laws of Overlying Strata During Strip Coal Pillar Recovery by Paste Backfill
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摘要: 为分析膏体充填回收条带煤柱覆岩活化规律，通过建立条带开采、回收遗留煤柱和单独充填开采3种模型，采用数值模拟和岱庄煤矿膏体充填回收条带煤柱地表沉陷实测，研究得出了充填开采孤岛煤柱引起的覆岩活化机理，以及覆岩活化对地表沉陷影响的程度。研究表明：充填开采覆岩活化程度随着与煤层距离的增加，呈现先增加后减小的趋势，最大活化发生在距煤层100 m内；膏体回收条带煤柱覆岩活化率在15%~30%，反应至地表的在15%左右。Abstract: To study the activation laws of overlying strata during strip coal pillar recovery by paste backfill, three models of strip mining, residual coal pillar recovery and separate filling mining were established. Based on the numerical simulation and the actual measurement of surface subsidence of coal pillar in the belt of paste filling recovery in Daizhuang Coal Mine, the mechanism of overburden activation caused by filling and mining of isolated island coal pillar and the influence of overburden activation on surface subsidence are studied. The results show that the activation degree of overburden in filling mining tends to increase first and then decrease with the increase of the distance from the coal seam, and the maximum activation occurs within 100 m from the coal seam; the ratio of activation of overlying strata during strip coal pillar recovery by paste backfill is 15% to 30%, the surface is about 15%.
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[1] 徐永圻.煤矿开采学[M].徐州:中国矿业大学出版社,1999. [2] 何国清,杨伦.矿山开采沉陷学[M].徐州:中国矿业大学出版社,1991. [3] 方新秋,邹永洺,程远伟,等.建筑物下深部煤层二次条带开采研究[J].采矿与安全工程学报,2013(2):223-230. [4] 赵善坤.采动影响下逆冲断层“活化”特征试验研究[J].采矿与安全工程学报,2016(2):354-360. [5] 周华强,侯朝炯,孙希奎.固体废物膏体充填不迁村采煤[J].中国矿业大学学报,2004,33(2):154-158. [6] 唐维军,孙希奎,王恒,等.膏体充填开采条带煤柱覆岩稳定效应研究[J].煤炭科学技术,2017,45(9):109-115. [7] 温国惠,李秀山,蒲志强.孤岛煤柱膏体充填开采覆岩运动规律研究[J].山东科技大学学报(自然科学版),2010(4):46-50. [8] 李秀山,曹忠,柳成懋,等.岱庄煤矿条带煤柱矸石膏体充填开采地表沉陷研究[J].煤炭工程,2012(4): 85-87. [9] 韩文骥,宋光远,曹忠,等.膏体充填开采孤岛煤柱覆岩移动规律研究[J].煤矿安全,2017(9):220-223. [10] 刘宝琛,廖国华.煤矿地表移动的基本规律[M].北京:中国工业出版社,1965. [11] 常庆粮,周华强,柏建彪.膏体充填开采覆岩稳定性研究与实践[J].采矿与安全工程学报,2011,28(2):279-282. [12] 孙超,薄景山,刘红帅,等.采空区地表沉降影响因素研究[J].吉林大学学报,2009,39(3):498-502. [13] 史应恩.采动影响下断层应力分布与活化规律研究[D].长沙:湖南科技大学,2016. [14] 常庆粮.膏体充填控制覆岩变形与地表沉陷的理论研究与实践[D].徐州:中国矿业大学,2009.
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