特厚煤层错层位巷道布置的沿空掘巷技术研究
|
摘要
基于特厚煤层错层位巷道布置条件下沿空掘巷技术应用较少的现状,针对错层位沿空掘巷技术展开研究,特厚煤层不同层位布置回采巷道时常留设不同尺寸的三角煤体,采用理论计算的方法对三角煤体的稳定性进行分析,发现在回采14 m特厚煤层时,回采巷道布置在距底板7 m与10.5 m时下方三角煤体处于稳定状态。在此基础上,进一步研究了稳定三角煤体在巷道支护条件下对实体煤稳定性的影响,确定回采巷道布置在距底板10.5 m时,从应力分布与围岩稳定性考虑,可实现完全无煤柱沿空掘巷布置。结果表明:特厚煤层错层位巷道布置条件下沿空掘巷技术,有效改善了沿空掘巷支护与采掘接续问题。
Based on the less application of the gateway driving technology along the goaf under the layout condition of the displaced layer gateway in the ultra thick seam,a study was conducted on the gateway driving technology along the goaf in the displaced layer seam. When a mining gateway made in different layer of the ultra thick seam,different size triangle seam would be left. A theoretical calculation method was applied to the analysis on the stability of the triangle seam. During the mining of the 14 m ultra thick seam,the mining gateway was set in a level with 7 m and 10.5 m to the seam floor and the triangle seam under the level of the gateway was in a stable status. Based on the circumstances,a further study was conducted on the stable triangle seam affected to the stability of the seam under the condition of the gateway support. When the mining gateway layout was determined at a level with a vertical distance of 10.5 m to the seam floor,from the consideration on the stress distribution and the surrounding rock stability,a layout of the gateway driving along the goaf with non coal pillar could be fully realized. The results showed that under the condition of the displaced layer gateway layout in the ultra thick seam,the gateway driving technology along the goaf could effectively improve the support and the mining and driving connection problems of the gateway driving along the goaf.
Based on the less application of the gateway driving technology along the goaf under the layout condition of the displaced layer gateway in the ultra thick seam,a study was conducted on the gateway driving technology along the goaf in the displaced layer seam. When a mining gateway made in different layer of the ultra thick seam,different size triangle seam would be left. A theoretical calculation method was applied to the analysis on the stability of the triangle seam. During the mining of the 14 m ultra thick seam,the mining gateway was set in a level with 7 m and 10.5 m to the seam floor and the triangle seam under the level of the gateway was in a stable status. Based on the circumstances,a further study was conducted on the stable triangle seam affected to the stability of the seam under the condition of the gateway support. When the mining gateway layout was determined at a level with a vertical distance of 10.5 m to the seam floor,from the consideration on the stress distribution and the surrounding rock stability,a layout of the gateway driving along the goaf with non coal pillar could be fully realized. The results showed that under the condition of the displaced layer gateway layout in the ultra thick seam,the gateway driving technology along the goaf could effectively improve the support and the mining and driving connection problems of the gateway driving along the goaf.
引文
[1]陈炎光,陆士良.中国煤矿巷道围岩控制[M].徐州:中国矿业大学出版社,1994.
[2]杜计平,孟宪锐.采矿学[M].徐州:中国矿业大学出版社,2009.
[3]张洪伟,万志军,张源,等.非充分稳定覆岩下综放沿空掘巷窄煤柱变形机理[J].采矿与安全工程学报,2016,33(4):692-698.Zhang Hongwei,Wan Zhijun,Zhang Yuan,et al.Deformation mechanism of narrow coal pillar in the fully-mechanized gob-side entry with incompletely stable overlying strata[J].Journal of Mining&Safety Engineering,2016,33(4):692-698.
[4]张炜,张东升,陈建本,等.孤岛工作面窄煤柱沿空掘巷围岩变形控制[J].中国矿业大学学报,2014,43(1):36-42.Zhang Wei,Zhang Dongsheng,Chen Jianben,et al.Control of surrounding rock deformation for gob-side entry driving in narrow coal pillar of island coalface[J].Journal of China University of Mining&Technology,2014,43(1):36-42.
[5]李磊,柏建彪,王襄禹.综放沿空掘巷合理位置及控制技术[J].煤炭学报,2012,37(9):1564-1569.Li Lei,Bai Jianbiao,Wang Xiangyu.Rational position and control technique of roadway driving along next goaf in fully mechanized top coal caving face[J].Journal of China Coal Society,2012,37(9):1564-1569.
[6]王德超,李术才,王琦,等.深部厚煤层综放沿空掘巷煤柱合理宽度试验研究[J].岩石力学与工程学报,2014,33(3):539-547.Wang Dechao,Li Shucai,Wang Qi,et al.Experimental study of reasonable coal pillar width in fully mechanized top coal caving face of deep thick coal seam[J].Chinese Journal of Rock Mechanics and Engineering,2014,33(3):539-547.
[7]侯朝炯,李学华.综放沿空掘巷围岩大、小结构的稳定性原理[J].煤炭学报,2001,26(1):1-7.Hou Chaojiong,Li Xuehua.Stability principle of big and small structures of rock surrounding roadway driven along goaf in fully mechanized top coal caving face[J].Journal of China Coal Society,2001,26(1):1-7.
[8]李学华.综放沿空掘巷围岩大小结构稳定性的研究[D].徐州:中国矿业大学,2000.
[9]柏建彪.综放沿空掘巷围岩稳定性原理及控制技术研究[D].徐州:中国矿业大学,2002.
[10]Su Hai,Bai Jianbiao,Yan Shuai,et al.Study on gob-side entry retaining in fully-mechanized longwall with top-coal caving and its application[J].International Journal of Mining Science and Technology,2015,25:503-510.
[11]柏建彪,王卫军,侯朝炯,等.综放沿空掘巷围岩控制机理及支护技术研究[J].煤炭学报,2000,25(5):478-481.Bai Jianbiao,Wang Weijun,Hou Chaojiong,et al.Control mechanism and support technique about gateway driven along goaf in fully-mechanized top coal caving face[J].Journal of China Coal Society,2000,25(5):478-481.
[12]柏建彪,侯朝炯,黄汉富.沿空掘巷窄煤柱稳定性数值模拟研究[J].岩石力学与工程学报,2004,23(20):3475-3479.Bai Jianbiao,Hou Chaojiong,Huang Hanfu.Numerical simulation study on stability of narrow coal pillar of roadway driving along goaf[J].Chinese Journal of Rock Mechanics and Engineering,2004,23(20):3475-3479.
[13]柏建彪,侯朝炯.空巷顶板稳定性原理及支护技术研究[J].煤炭学报,2005,30(1):8-11.Bai Jianbiao,Hou Chaojiong.Research on principle of roof stability of abandoned workings and supporting technology[J].Journal of China Coal Society,2005,30(1):8-11.
[14]王卫军,黄成光,侯朝炯,等.综放沿空掘巷底鼓的受力变形分析[J].煤炭学报,2002,27(1):26-30.Wang Weijun,Huang Chengguang,Hou Chaojiong,et al.Mechanical deformation analysis of floor strata of roadway driving along next goaf in fully mechanized sub-level caving face[J].Journal of China Coal Society,2002,27(1):26-30.
[15]王卫军,侯朝炯,柏建彪,等.综放沿空巷道底板受力变形分析及底鼓力学原理[J].岩土力学,2001,22(3):319-322.Wang Weijun,Hou Chaojiong,Bai Jianbiao,el at.Mechanical deformation analysis and principle of floor heave of roadway driving gob in fully mechanized sub-level caving face[J].Rock and Soil Mechanics,2001,22(3):319-322.
[16]石平五,许少东,陈治中.综放沿空掘巷矿压显现规律研究[J].矿山压力与顶板管理,2004,21(1):32-35.Shi Pingwu,Xu Shaodong,Chen Zhizhong.Analysis on strata behaviors of gab entry in fully-mechanized top coal caving face[J].Ground Pressure and Strata Control,2004,21(1):32-35.
[17]王红胜,张东升,李树刚,等.基于基本顶关键岩块B断裂线位置的窄煤柱合理宽度的确定[J].采矿与安全工程学报.2014,31(1):10-16.Wang Hongsheng,Zhang Dongsheng,Li Shugang,et al.Rational width of narrow coal pillar based on the fracture line location of key rock B in main roof[J].Journal of Mining&Safety Engineering,2014,31(1):10-16.
[18]赵景礼,吴健.厚煤层错层位巷道布置采全厚采煤法,中国:ZL98100544.6[P].2002-01-23.
[19]赵景礼.厚煤层全高开采新论[M].北京:煤炭工业出版社,2004.
[20]王志强,赵景礼,李泽荃.错层位内措式采场“三带”高度的确定方法[J].采矿与安全工程学报,2013,30(2):231-236.Wang Zhiqiang,Zhao Jingli,Li Zequan.Determination of height of“three zone”in the stope with stagger position and internal misaligned roadway layout[J].Journal of Mining&Safety Engineering,2013,30(2):231-236.
[21]王志强,赵景礼,张宝优,等.错层位巷道布置放顶煤开采关键层的稳定特征[J].煤炭学报,2008,33(9):961-965.Wang Zhiqiang,Zhao Jingli,Zhang Baoyou,et al.Stable characters of key stratum in stagger arrangement roadway layout top-coal caving mining[J].Journal of China Coal Society,2008,33(9):961-965.
[2]杜计平,孟宪锐.采矿学[M].徐州:中国矿业大学出版社,2009.
[3]张洪伟,万志军,张源,等.非充分稳定覆岩下综放沿空掘巷窄煤柱变形机理[J].采矿与安全工程学报,2016,33(4):692-698.Zhang Hongwei,Wan Zhijun,Zhang Yuan,et al.Deformation mechanism of narrow coal pillar in the fully-mechanized gob-side entry with incompletely stable overlying strata[J].Journal of Mining&Safety Engineering,2016,33(4):692-698.
[4]张炜,张东升,陈建本,等.孤岛工作面窄煤柱沿空掘巷围岩变形控制[J].中国矿业大学学报,2014,43(1):36-42.Zhang Wei,Zhang Dongsheng,Chen Jianben,et al.Control of surrounding rock deformation for gob-side entry driving in narrow coal pillar of island coalface[J].Journal of China University of Mining&Technology,2014,43(1):36-42.
[5]李磊,柏建彪,王襄禹.综放沿空掘巷合理位置及控制技术[J].煤炭学报,2012,37(9):1564-1569.Li Lei,Bai Jianbiao,Wang Xiangyu.Rational position and control technique of roadway driving along next goaf in fully mechanized top coal caving face[J].Journal of China Coal Society,2012,37(9):1564-1569.
[6]王德超,李术才,王琦,等.深部厚煤层综放沿空掘巷煤柱合理宽度试验研究[J].岩石力学与工程学报,2014,33(3):539-547.Wang Dechao,Li Shucai,Wang Qi,et al.Experimental study of reasonable coal pillar width in fully mechanized top coal caving face of deep thick coal seam[J].Chinese Journal of Rock Mechanics and Engineering,2014,33(3):539-547.
[7]侯朝炯,李学华.综放沿空掘巷围岩大、小结构的稳定性原理[J].煤炭学报,2001,26(1):1-7.Hou Chaojiong,Li Xuehua.Stability principle of big and small structures of rock surrounding roadway driven along goaf in fully mechanized top coal caving face[J].Journal of China Coal Society,2001,26(1):1-7.
[8]李学华.综放沿空掘巷围岩大小结构稳定性的研究[D].徐州:中国矿业大学,2000.
[9]柏建彪.综放沿空掘巷围岩稳定性原理及控制技术研究[D].徐州:中国矿业大学,2002.
[10]Su Hai,Bai Jianbiao,Yan Shuai,et al.Study on gob-side entry retaining in fully-mechanized longwall with top-coal caving and its application[J].International Journal of Mining Science and Technology,2015,25:503-510.
[11]柏建彪,王卫军,侯朝炯,等.综放沿空掘巷围岩控制机理及支护技术研究[J].煤炭学报,2000,25(5):478-481.Bai Jianbiao,Wang Weijun,Hou Chaojiong,et al.Control mechanism and support technique about gateway driven along goaf in fully-mechanized top coal caving face[J].Journal of China Coal Society,2000,25(5):478-481.
[12]柏建彪,侯朝炯,黄汉富.沿空掘巷窄煤柱稳定性数值模拟研究[J].岩石力学与工程学报,2004,23(20):3475-3479.Bai Jianbiao,Hou Chaojiong,Huang Hanfu.Numerical simulation study on stability of narrow coal pillar of roadway driving along goaf[J].Chinese Journal of Rock Mechanics and Engineering,2004,23(20):3475-3479.
[13]柏建彪,侯朝炯.空巷顶板稳定性原理及支护技术研究[J].煤炭学报,2005,30(1):8-11.Bai Jianbiao,Hou Chaojiong.Research on principle of roof stability of abandoned workings and supporting technology[J].Journal of China Coal Society,2005,30(1):8-11.
[14]王卫军,黄成光,侯朝炯,等.综放沿空掘巷底鼓的受力变形分析[J].煤炭学报,2002,27(1):26-30.Wang Weijun,Huang Chengguang,Hou Chaojiong,et al.Mechanical deformation analysis of floor strata of roadway driving along next goaf in fully mechanized sub-level caving face[J].Journal of China Coal Society,2002,27(1):26-30.
[15]王卫军,侯朝炯,柏建彪,等.综放沿空巷道底板受力变形分析及底鼓力学原理[J].岩土力学,2001,22(3):319-322.Wang Weijun,Hou Chaojiong,Bai Jianbiao,el at.Mechanical deformation analysis and principle of floor heave of roadway driving gob in fully mechanized sub-level caving face[J].Rock and Soil Mechanics,2001,22(3):319-322.
[16]石平五,许少东,陈治中.综放沿空掘巷矿压显现规律研究[J].矿山压力与顶板管理,2004,21(1):32-35.Shi Pingwu,Xu Shaodong,Chen Zhizhong.Analysis on strata behaviors of gab entry in fully-mechanized top coal caving face[J].Ground Pressure and Strata Control,2004,21(1):32-35.
[17]王红胜,张东升,李树刚,等.基于基本顶关键岩块B断裂线位置的窄煤柱合理宽度的确定[J].采矿与安全工程学报.2014,31(1):10-16.Wang Hongsheng,Zhang Dongsheng,Li Shugang,et al.Rational width of narrow coal pillar based on the fracture line location of key rock B in main roof[J].Journal of Mining&Safety Engineering,2014,31(1):10-16.
[18]赵景礼,吴健.厚煤层错层位巷道布置采全厚采煤法,中国:ZL98100544.6[P].2002-01-23.
[19]赵景礼.厚煤层全高开采新论[M].北京:煤炭工业出版社,2004.
[20]王志强,赵景礼,李泽荃.错层位内措式采场“三带”高度的确定方法[J].采矿与安全工程学报,2013,30(2):231-236.Wang Zhiqiang,Zhao Jingli,Li Zequan.Determination of height of“three zone”in the stope with stagger position and internal misaligned roadway layout[J].Journal of Mining&Safety Engineering,2013,30(2):231-236.
[21]王志强,赵景礼,张宝优,等.错层位巷道布置放顶煤开采关键层的稳定特征[J].煤炭学报,2008,33(9):961-965.Wang Zhiqiang,Zhao Jingli,Zhang Baoyou,et al.Stable characters of key stratum in stagger arrangement roadway layout top-coal caving mining[J].Journal of China Coal Society,2008,33(9):961-965.