浅埋深沿空留巷充填体载荷估算方法探讨与实践
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摘要
针对目前浅埋深沿空留巷中充填体承载特性不明确,载荷计算公式缺乏的现状,通过理论分析、现场验证等方式进行了浅埋深高强度充填体的承载特性及载荷计算的探索。结果表明:浅埋深沿空留巷中混凝土充填体呈现控制变形特性,表现为巷道变形小,充填体载荷大。基于长壁工作面煤柱稳定性分析方法,提出沿空留巷充填体最大载荷估算公式。现场验证表明公式较好吻合浅埋深条件下沿空留巷充填体的实测载荷,可为类似条件下的沿空留巷充填参数设计提供一定的参考。
To the problems of loading calculation formula absent and backfill body loading characteristics of gob-side entry retaining in shallow,the loading characteristic and evaluation of filling body were explored by theoretical analysis and field verify. The results showed that the deformation characteristics of concrete filling body appeared as controlling deformation character,it was small deformation of roadway and large loading of filling body. Based on coal pillar stability analysis method of long wall working face,and then the maximum loading evaluation formula of filling body was put forward,verified by field testing. It could reference for similar situation.
To the problems of loading calculation formula absent and backfill body loading characteristics of gob-side entry retaining in shallow,the loading characteristic and evaluation of filling body were explored by theoretical analysis and field verify. The results showed that the deformation characteristics of concrete filling body appeared as controlling deformation character,it was small deformation of roadway and large loading of filling body. Based on coal pillar stability analysis method of long wall working face,and then the maximum loading evaluation formula of filling body was put forward,verified by field testing. It could reference for similar situation.
引文
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[14]谭云亮,于凤海,宁建国,等.沿空巷旁支护适应性原理与支护方法[J].煤炭学报,2016,41(2):376-382.
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[16]王海兵.沿空留巷在浅埋深、薄基岩综采工作面的应用研究[J].中国煤炭,2015(10):53-55.
[17]杨俊彩.浅埋深厚煤层柔模混凝土沿空留巷矿压规律研究[J].煤炭科学技术,2015,43(S2):29-32.
[18]李雪佳.浅埋深大采高工作面大断面巷道沿空留巷技术[J].煤炭科学技术,2015,43(S2):56-59.
[19]Mark C.(2006).The Evolution of Intelligent Coal Pillar Design:1981-2006.Proceedings of 25th International Conference on Ground Control in Mining,Morgantown,WV:West Virginia U-niversity,2006 Aug:325-334.
[2]华心祝.我国沿空留巷支护技术发展现状及改进建议[J].煤炭科学技术,2006,34(12):78-81.
[3]孙恒虎,赵炳利.沿空留巷的理论与实践[M].北京:煤炭工业出版社,1993.
[4]颜志平,漆泰岳,张连信,等.ZKD高水速凝材料及其泵送充填技术的研究[J].煤炭学报,1997,22(3):270-275.
[5]柏建彪,周华强,侯朝炯,等.沿空留巷巷旁支护技术的发展[J].中国矿业大学学报,2004,33(2):183-186.
[6]康红普,牛多龙,张镇,等.深部沿空留巷围岩变形特征与支护技术[J].岩石力学与工程学报,2010,29(10):1977-1987.
[7]孙恒虎,吴健,邱运新.沿空留巷的矿压规律及岩层控制[J].煤炭学报,1992(1):15-24.
[8]李化敏.沿空留巷顶板岩层控制设计[J].岩石力学与工程学报,2000,19(5):651-654.
[9]李迎富,华心祝,蔡瑞春.沿空留巷关键块的稳定性力学分析及工程应用[J].采矿与安全工程学报,2012,29(3):357-364.
[10]张农,韩昌良,阚甲广,等.沿空留巷围岩控制理论与实践[J].煤炭学报,2014,39(8):1635-1641.
[11]韩昌良,张农,李桂臣,等.大采高沿空留巷巷旁复合承载结构的稳定性分析[J].岩土工程学报,2014,36(5):969-976.
[12]袁亮,薛俊华,张农,等.煤层气抽采和煤与瓦斯共采关键技术现状与展望[J].煤炭科学技术,2013,41(9):6-11.
[13]涂敏.沿空留巷顶板运动与巷旁支护阻力研究[J].辽宁工程技术大学学报(自然科学版),1999,18(4):347-351.
[14]谭云亮,于凤海,宁建国,等.沿空巷旁支护适应性原理与支护方法[J].煤炭学报,2016,41(2):376-382.
[15]杨继元,王晓利,吴玉意,等.柔模混凝土沿空留巷稳定性监测方法应用[J].陕西煤炭,2014,33(6):105-108.
[16]王海兵.沿空留巷在浅埋深、薄基岩综采工作面的应用研究[J].中国煤炭,2015(10):53-55.
[17]杨俊彩.浅埋深厚煤层柔模混凝土沿空留巷矿压规律研究[J].煤炭科学技术,2015,43(S2):29-32.
[18]李雪佳.浅埋深大采高工作面大断面巷道沿空留巷技术[J].煤炭科学技术,2015,43(S2):56-59.
[19]Mark C.(2006).The Evolution of Intelligent Coal Pillar Design:1981-2006.Proceedings of 25th International Conference on Ground Control in Mining,Morgantown,WV:West Virginia U-niversity,2006 Aug:325-334.