超高水材料开放式充填开采围岩成拱特性研究
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摘要
超高水材料开放式充填开采在临沂矿业集团田庄煤矿11611工作面试用成功,充填开采后,采场矿压显现程度明显降低,地表建筑物破坏等级均控制在国家规定的允许范围内。以田庄煤矿超高水材料充填开采为背景,利用有限元ANSYS软件和相似材料模拟对超高水材料充填开采后采场围岩的成拱特性进行了研究。结果表明,超高水材料充填开采后,充填体能够将围岩中的裂隙充填密实,从而使充填体、垮矸、围岩三者形成一个新的平衡体系,围岩的成拱系数量级较小,围岩受扰动小,大部分围岩处于小变形状态,上覆岩层的弯曲变形量不足以超过其极限挠度值而发生断裂现象,因而能够有效控制岩层的运动。
Open filling mining with ultrahigh water material was successfully used at 11611 working face of Tianzhuang Coal Mine.After filling mining,stope underground pressure behavior significantly reduced,and the surface building damage grade satisfied national regulation. According to Tianzhuang Coal Mine,the stope surrounding rock arching characteristics during open filling mining with ultrahigh water material were analyzed by the finite element software ANSYS and similar material simulation.The results showed that open filling mining with ultrahigh water material was favor in filling the fracture of the surrounding rocks densely,with a new equilibrium system formed by filling body,collapse of gangue and surrounding rock.Most surrounding rocks were deformed slightly,with small arching coefficient and little disturbance,and the bending deformation of the upper strata was not sufficient to reach the limit of deflection and crack.The mining method was proved to effectively control the strata movement.
Open filling mining with ultrahigh water material was successfully used at 11611 working face of Tianzhuang Coal Mine.After filling mining,stope underground pressure behavior significantly reduced,and the surface building damage grade satisfied national regulation. According to Tianzhuang Coal Mine,the stope surrounding rock arching characteristics during open filling mining with ultrahigh water material were analyzed by the finite element software ANSYS and similar material simulation.The results showed that open filling mining with ultrahigh water material was favor in filling the fracture of the surrounding rocks densely,with a new equilibrium system formed by filling body,collapse of gangue and surrounding rock.Most surrounding rocks were deformed slightly,with small arching coefficient and little disturbance,and the bending deformation of the upper strata was not sufficient to reach the limit of deflection and crack.The mining method was proved to effectively control the strata movement.
引文
[1]王磊.固体密实充填开采岩层移动机理及变形预测研究[D].北京:中国矿业大学,2012.
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[7]崔增娣,孙恒虎.煤矸石凝石似膏体充填材料的制备及其性能[J].煤炭学报,2010,35(6):896-899.
[8]郑艳栋,冯光明,张明,等.田庄矿超高水材料充填开采数值模拟分析[J].煤矿安全,2011,42(12):127-129.
[9]杜晓丽,宋宏伟,陈杰,等.煤矿采矿围岩压力拱的演化特征数值模拟研究[J].中国矿业大学学报,2011,40(6):863-867.
[2]冯光明,王成真,李凤凯,等.超高水材料袋式充填开采研究[J].采矿与安全工程学报,2011,28(4):602-607,613.DOI:10.3969/j.issn.1673-3363.2011.04.019.
[3]马树元,李报,李桂新,等.高德矿增大水砂充填供水能力的研究[J].阜新矿业学院学报,1991,10(2):25-29.
[4]缪协兴,张吉雄.矸石充填采煤中的矿压显现规律分析[J].采矿与安全工程学报,2007,24(4):379-382.
[5]胡炳南,郭爱国.矸石充填材料压缩仿真实验研究[J].煤炭学报,2009,34(8):1076-1080.
[6]赵才智,周华强,柏建彪,等.膏体充填材料强度影响因素分析[J].辽宁工程技术大学学报,2006,25(6):904-906.
[7]崔增娣,孙恒虎.煤矸石凝石似膏体充填材料的制备及其性能[J].煤炭学报,2010,35(6):896-899.
[8]郑艳栋,冯光明,张明,等.田庄矿超高水材料充填开采数值模拟分析[J].煤矿安全,2011,42(12):127-129.
[9]杜晓丽,宋宏伟,陈杰,等.煤矿采矿围岩压力拱的演化特征数值模拟研究[J].中国矿业大学学报,2011,40(6):863-867.