关于错层位采煤法接续面巷道合理位置的选择
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摘要
本文重点研究相邻接续面巷道布置的合理位置。以某矿为工程背景,理论分析给出了实体煤侧垂直方向上的分区:一侧采空实体煤分区、过渡区和沿底弹性区。根据巷道布置原则,将巷道在垂直方向上沿9号煤层底板布置在弹性区,在水平方向上布置在极限平衡区的低应力区域内。采用理论分析、FLAC3D数值模拟等研究方法,确定了在该工程背景下的水平方向上的合理错距为2 m。工程应用中结合现场试验对接续面进风巷采取联合支护,通过对巷道的顶底板移近量和两帮位移量进行实测,发现围岩变形量得到有效控制。
This paper study mainly on the reasonable haulage roadway position of successive panel between two adjoint panels. Relying on a mine for the project background,by the theoretical analysis,three zones in the vertical direction of the solid coal side were given: Solid coal stress zone along one side of the goaf,transitional zone and elastic zone along the floor. According to the principle of roadway layout,the roadway should be arranged vertically in the elastic zone along the floor and horizontally in the low-stress region of the limit equilibrium zone. The reasonable staggered horizontal distance between adjacent roadways for this project background was found to be 2 m by theoretical analysis and FLAC~(3D) numerical simulation. In the engineering application,combined support was applied on the haulage roadway,and the deformation of the surrounding rock in the roof,floor and sides of the haulage roadway was effectively controlled according to the actual field test.
This paper study mainly on the reasonable haulage roadway position of successive panel between two adjoint panels. Relying on a mine for the project background,by the theoretical analysis,three zones in the vertical direction of the solid coal side were given: Solid coal stress zone along one side of the goaf,transitional zone and elastic zone along the floor. According to the principle of roadway layout,the roadway should be arranged vertically in the elastic zone along the floor and horizontally in the low-stress region of the limit equilibrium zone. The reasonable staggered horizontal distance between adjacent roadways for this project background was found to be 2 m by theoretical analysis and FLAC~(3D) numerical simulation. In the engineering application,combined support was applied on the haulage roadway,and the deformation of the surrounding rock in the roof,floor and sides of the haulage roadway was effectively controlled according to the actual field test.
引文
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[15]郭晓强,窦林名,徐必根,等.邻近采空区巷道外错布置防治冲击地压技术[J].煤炭科学技术,2014,42(2):1-5.Guo Xiaoqiang,Dou Linming,Xu Bigen,et al.Technology of preventing rock burst by lateral layout roadway near goaf[J].Coal Science and Technology,2014,42(2):1-5.
[16]范新民,赵景礼,王玉宝,等.错层位巷道布置采全厚采煤法在西山矿区的应用研究[M].北京:煤炭工业出版社,2013.
[17]赵景礼.厚煤层错层位巷道布置采全厚采煤法的研究[J].煤炭学报,2004,29(2):142-145.Zhao Jingli.Study on whole seam longwall mining with split-level gateroad[J].Journal of China Coal Society,2004,29(2):142-145.
[18]钱鸣高,石平五,许家林.矿山压力与岩层控制[M].徐州:中国矿业大学出版社,2010.
[19]彭文斌.FLAC3D实用教程[M].北京:机械工业出版社,2007.
[20]姚善泳,徐杰,王志强,等.倾斜厚煤层错层位相邻巷道联合支护技术[J].煤矿安全,2017,48(11):96-99.Yao Shanyong,Xu Jie,Wang Zhiqiang,et al.Combined support technology of adjacent roadway by staggered outward arrangement in inclined thick seam[J].Safety in Coal Mines,2017,48(11):96-99.
[21]宋平.斜沟矿厚煤层错层位外错式沿空掘巷与支护技术研究[D].北京:中国矿业大学(北京),2016.
[22]王志强.实现厚煤层沿空掘巷相邻巷道联合支护的方法.中国,CN106014413A[P].2016-10-12.
[2]赵景礼.厚煤层全高开采的三段式回采工艺:中国,ZL200410039575.0[P].2004-12-29.
[3]王朋飞,赵景礼,王志强,等.非充分采动采空区与煤岩柱(体)耦合作用机制及应用[J].岩石力学与工程学报,2017,36(5):1185-1200.Wang Pengfei,Zhao Jingli,Wang Zhiqiang,et al.Mechanism of gob-pillar interaction for subcritical panels and its application[J].Chinese Journal of Rock Mechanics and Engineering,2017,36(5):1185-1200.
[4]Zhao Jingli,Wang Pengfei,Su Yue.An innovative longwall mining technology in Tangshan coal mine,China[J].Minerals,2017,7(1):14.
[5]王志强.厚煤层错层位相互搭接工作面矿压显现规律研究[D].北京:中国矿业大学(北京),2009.
[6]王志强,周立林,月煜程,等.无煤柱开采保护层实现倾向连续、充分卸压的实验研究[J].采矿与安全工程学报,2014,31(3):424-429.Wang Zhiqang,Zhou Lilin,Yue Yucheng,et al.Experimental research on realizing inclined successive and sufficient pressure-relief in pillarless protective coal seam mining[J].Journal of Mining&Safety Engineering,2014,31(3):424-429.
[7]牛伟锋.大倾角厚煤层条件下巷道布置改革的前景[J].科技资讯,2012(11):109-110.Niu Weifeng.Prospect of roadway layout under conditions of thick coal seam with large dip angle[J].Science&Technology Information,2012(11):109-110.
[8]王树岗,赵景礼,刘斌慧.综放工作面错层位立体化巷道布置技术研究及应用[J].煤炭工程,2016,48(7):1-3,7.Wang Shugang,Zhao Jingli,Liu Binhui.Research and application of stagger three-dimensional roadway arrangement in fully mechanized top coal caving face[J].Coal Engineering,2016,48(7):1-3,7.
[9]王立先,王飞,刘鹏程.错层位工作面上覆岩层的结构分析[J].煤炭科学技术,2008,36(5):24-27.Wang Lixian,Wang Fei,Liu Pengcheng.Structure analysis on strata above coal mining face in dislocated seam[J].Coal Science and Technolog,2008,36(5):24-27.
[10]张俊文,王国龙,王鹏,等.错层位综放开采采场覆岩结构及大“O”形圈特性分析[J].山东科技大学学报:自然科学版,2011,30(4):10-16.Zhang Junwen,Wang Guolong,Wang Peng,et al.Structure of overlying strata in fully mechanized sublevel caving faces with stagger arrangement and characteristics of large O-shaped circle[J].Journal of Shandong University of Science and Technology:Natural Science Edition,2011,30(4):10-16.
[11]赵景礼,常中保,田筱剑,等.错层位采煤法非常规区段煤柱稳定性理论研究[J].矿业科学学报,2018,3(1):55-60.Zhao Jingli,Chang Zhongbao,Tian Xiaojian,et al.Theoretical analysis of stability of unconventional gateroad pillar employing longwall mining withsplit-level gateroads[J].Journal of Mining Science and Technology,2018,3(1):55-60.
[12]王志强,石磊,苏越,等.特厚煤层错层位外错巷道围岩控制技术研究[J].矿业科学学报,2018,3(5):470-476.Wang Zhiqiang,Shi Lei,Su Yue,et al.Research on surrounding rock control technology of external-misaligned stagger arrangement of roadway in ultra-thick seam[J].Journal of Mining Science and Technology,2018,3(5):470-476.
[13]刘昌平.大倾角厚煤层长壁综放工作面端头支护技术实践[J].煤炭科学技术,2005,33(10):27-29.Liu Changping.Practices on face end support technology for fully mechanized top coal caving mining face in deep inclined thick seam[J].Coal Science and Technology,2005,33(10):27-29.
[14]张巨川.厚煤层错层位巷道布置采全厚采煤法的实际应用[J].内蒙古煤炭经济,2014(12):108,161.Zhang Juchuan.Practice of LMSG in thick coal seams[J].Inner Mongolia Coal Economy,2014(12):108,161.
[15]郭晓强,窦林名,徐必根,等.邻近采空区巷道外错布置防治冲击地压技术[J].煤炭科学技术,2014,42(2):1-5.Guo Xiaoqiang,Dou Linming,Xu Bigen,et al.Technology of preventing rock burst by lateral layout roadway near goaf[J].Coal Science and Technology,2014,42(2):1-5.
[16]范新民,赵景礼,王玉宝,等.错层位巷道布置采全厚采煤法在西山矿区的应用研究[M].北京:煤炭工业出版社,2013.
[17]赵景礼.厚煤层错层位巷道布置采全厚采煤法的研究[J].煤炭学报,2004,29(2):142-145.Zhao Jingli.Study on whole seam longwall mining with split-level gateroad[J].Journal of China Coal Society,2004,29(2):142-145.
[18]钱鸣高,石平五,许家林.矿山压力与岩层控制[M].徐州:中国矿业大学出版社,2010.
[19]彭文斌.FLAC3D实用教程[M].北京:机械工业出版社,2007.
[20]姚善泳,徐杰,王志强,等.倾斜厚煤层错层位相邻巷道联合支护技术[J].煤矿安全,2017,48(11):96-99.Yao Shanyong,Xu Jie,Wang Zhiqiang,et al.Combined support technology of adjacent roadway by staggered outward arrangement in inclined thick seam[J].Safety in Coal Mines,2017,48(11):96-99.
[21]宋平.斜沟矿厚煤层错层位外错式沿空掘巷与支护技术研究[D].北京:中国矿业大学(北京),2016.
[22]王志强.实现厚煤层沿空掘巷相邻巷道联合支护的方法.中国,CN106014413A[P].2016-10-12.