浅埋高强度采动巷道围岩松动圈演化规律研究
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摘要
为研究浅埋采动巷道围岩松动圈演化规律,保证煤矿地下水库的安全运行,以补连塔煤矿典型浅埋高强度综采面为工程背景,综合运用理论分析、数值模拟、现场实测等方法对采动影响下的矩形巷道受力变形特征进行了分析。研究表明:浅埋高强度采动巷道松动圈主要集中在两帮呈"凸"型发育,受采空区残余支承压力影响程度大于工作面超前支承压力,巷道煤柱侧松动范围较工作面侧严重;巷道在二次采动阶段受一次采动和回采稳定的叠加影响破坏最严重,为保证遗留煤柱长期稳定性提出了锚网喷联合支护方法。研究成果为煤矿地下水库安全运行及类似条件下巷道围岩控制提供了科学依据。
In order to study the broken rock zone evolution law of mining affected roadway in shallow coal seam and to ensure the safe operation of coal mine underground reservoir,a typical high-intensity fully-mechanized mining face of shallow coal seam in Bulianta Coal Mine was choosed as the project background,and the intergrated research methods include theoretical analysis,numerical simulation and field measurement were carried out to analyze the stress and deformation characteristics for the mining affected rectangular roadway. The results indicated that the broken rock zone was developing with convex type which mainly concentrated in both sides of the shallow highintensity mining roadway,and it was significantly affected by the side abutment pressure of goaf than the front abutment pressure of mining face,besides,the broken zone of pillar side was more serious than working face side in the roadway. The roadway was damaged worst at secondary recovery which impaction was combined with the mining and the recovery,and to ensure the long-term stability of the remaining coal pillars that the method of bolting and shotcreting with wire mesh was proposed. The research results provide a scientific basis for the safe operation of underground coal mine reservoir and the control of roadway surrounding rock with similar conditions.
In order to study the broken rock zone evolution law of mining affected roadway in shallow coal seam and to ensure the safe operation of coal mine underground reservoir,a typical high-intensity fully-mechanized mining face of shallow coal seam in Bulianta Coal Mine was choosed as the project background,and the intergrated research methods include theoretical analysis,numerical simulation and field measurement were carried out to analyze the stress and deformation characteristics for the mining affected rectangular roadway. The results indicated that the broken rock zone was developing with convex type which mainly concentrated in both sides of the shallow highintensity mining roadway,and it was significantly affected by the side abutment pressure of goaf than the front abutment pressure of mining face,besides,the broken zone of pillar side was more serious than working face side in the roadway. The roadway was damaged worst at secondary recovery which impaction was combined with the mining and the recovery,and to ensure the long-term stability of the remaining coal pillars that the method of bolting and shotcreting with wire mesh was proposed. The research results provide a scientific basis for the safe operation of underground coal mine reservoir and the control of roadway surrounding rock with similar conditions.
引文
[1]董方庭.巷道围岩松动圈支护理论及应用技术[M].北京:煤炭工业出版社,2001.
[2]董方庭,宋宏伟,郭志宏,等.巷道围岩松动圈支护理论[J].煤炭学报,1994,19(1):21-31.DONG Fangting,SONG Hongwei,GUO Zhihong,et al.Tunnel wall rock loose circle support theories[J].Journal of China Coal Society,1994,19(1):21-31.
[3]刘刚,宋宏伟.煤巷围岩松动圈规律研究[J].煤炭学报,2002,27(1):31-35.LIU Gang,SONG Hongwei.Study on the distribution law of the broken rock zone around rectangular-shap coal roadway[J].Journal of China Coal Society,2002,27(1):31-35.
[4]刘刚,宋宏伟,段现军.矩形巷道松动圈的回归公式[J].煤炭科学技术,2001,29(6):38-40.LIU Gang,SONG Hongwei,DUAN Xianjun.Regressive formula for released zone in mine square type roadway[J].Coal Science and Technology,2001,29(6):38-40.
[5]靖洪文,付国彬,郭志宏.深井巷道围岩松动圈影响因素实测分析及控制技术研究[J].岩石力学与工程学报,1999,18(1):70-74.JING Hongwen,FU Guobin,GUO Zhihong.Measurement and analysis of influential factors of broken zone of deep roadways and study on its control technique[J].Chinese Journal of Rock Mechanics and Engineering,1999,18(1):70-74.
[6]张华磊,王连国,涂敏,等.采动环境下巷道围岩破裂演化规律及其控制技术研究[J].采矿与安全工程学报,2013,30(5):653-658.ZHANG Hualei,WANG Lianguo,TU Min,et al.Study on failure evolution laws and control technology of roadway surrounding rock under mining circumstances[J].Journal of Mining and Safety Engineering,2013,30(5):653-658.
[7]孙希奎,常庆粮,施现院,等.大断面半圆拱煤巷围岩松动圈厚度测定及分布规律[J].煤炭科学技术,2016,44(11):1-6.SUN Xikui,CHANG Qingliang,SHI Xianyuan,et al.Thickness measurement and distribution law of loose rings of surrounding rock in large cross section semicircle arch seam gateway[J].Coal Science and Technology,2016,44(11):1-6.
[8]陈秋南,黄小城,谢小鱼.基于Hoek-Brown准则对围岩松动圈半径的推导及改进[J].应用力学学报,2015,32(2):304-310.CHEN Qiunan,HUANG Xiaocheng,XIE Xiaoyu.Derivation of the radius of the broken rock zone based on hoek-brown criterion and its improvement[J].Chinese Journal of Applied Mechanics,2015,32(2):304-310.
[9]顾大钊.煤矿地下水库理论框架和技术体系[J].煤炭学报,2015,40(2):239-246.GU Dazhao.Theory framework and technological system of coal mine underground reservoir[J].Journal of China Coal Society,2015,40(2):239-246.
[10]顾大钊,张勇,曹志国.我国煤炭开采水资源保护利用技术研究进展[J].煤炭科学技术,2016,44(1):1-7.GU Dazhao,ZHANG Yong,CAO Zhiguo.Technical progress of water resource protection and utilization by coal mining in China[J].Coal Science and Technology,2016,44(1):1-7.
[11]陈苏社,黄庆享,薛刚,等.大柳塔煤矿地下水库建设与水资源利用技术[J].煤炭科学技术,2016,44(8):21-28.CHEN Sushe,HUANG Qingxiang,XUE Gang,et al.Technology of underground reservoir construction and water resource utilization in Daliuta Coal Mine[J].Coal Science and Technology,2016,44(8):21-28.
[12]赵彦钵,吴瑞祥,李政林,等.极限拉应变准则在围岩松动圈模拟中的应用[J].地下空间与工程学报,2014,10(2):315-321.ZHAO Yanbo,WU Ruixiang,LI Zhenglin,et al.Application of ultimate tensile strain criteria to simulate the loose zone of surrounding rock[J].Chinese Journal of Underground Space and Engineering,2014,10(2):315-321.
[13]钱鸣高,石平五,许家林.矿山压力与岩层控制[M].中国矿业大学出版社,2010.
[14]黄庆享.浅埋煤层的矿压特征与浅埋煤层定义[J].岩石力学与工程学报,2002,21(8):1174-1177.HUANG Qingxiang.Ground pressure behavior and definition of shallow seams[J].Chinese Journal of Rock Mechanics and Engineering,2002,21(8):1174-1177.
[15]屠世浩,白庆升,屠洪盛.浅埋煤层综采面护巷煤柱尺寸和布置方案优化[J].采矿与安全工程学报,2011,28(4):505-510.TU Shihao,BAI Qingsheng,TU Hongsheng.Pillar size determination and panel layout optimization for fully mechanized faces in shallow seams[J].Journal of Mining and Safety Engineering,2011,28(4):505-510.
[16]王方田.浅埋房式采空区下近距离煤层长壁开采覆岩运动规律及控制[D].徐州:中国矿业大学,2012.
[17]黄庆享,周金龙.浅埋煤层大采高工作面矿压规律及顶板结构研究[J].煤炭学报,2016,41(S2):279-286.HUANG Qingxiang,ZHOU Jinlong.Roof weighting behavior and roof structure of large mining height longwall face in shallow coal seam[J].Journal of China Coal Society,2016,41(S2):279-286.
[18]白庆升,屠世浩,袁永,等.基于采空区压实理论的采动响应反演[J].中国矿业大学学报,2013,42(3):355-361.BAI qingsheng,TU shihao,YUAN yong,et al.Back analysis of mining induced response on the basis of goaf compaction theory[J].Journal of China University of Mining&Technology,2013,42(3):355-361.
[2]董方庭,宋宏伟,郭志宏,等.巷道围岩松动圈支护理论[J].煤炭学报,1994,19(1):21-31.DONG Fangting,SONG Hongwei,GUO Zhihong,et al.Tunnel wall rock loose circle support theories[J].Journal of China Coal Society,1994,19(1):21-31.
[3]刘刚,宋宏伟.煤巷围岩松动圈规律研究[J].煤炭学报,2002,27(1):31-35.LIU Gang,SONG Hongwei.Study on the distribution law of the broken rock zone around rectangular-shap coal roadway[J].Journal of China Coal Society,2002,27(1):31-35.
[4]刘刚,宋宏伟,段现军.矩形巷道松动圈的回归公式[J].煤炭科学技术,2001,29(6):38-40.LIU Gang,SONG Hongwei,DUAN Xianjun.Regressive formula for released zone in mine square type roadway[J].Coal Science and Technology,2001,29(6):38-40.
[5]靖洪文,付国彬,郭志宏.深井巷道围岩松动圈影响因素实测分析及控制技术研究[J].岩石力学与工程学报,1999,18(1):70-74.JING Hongwen,FU Guobin,GUO Zhihong.Measurement and analysis of influential factors of broken zone of deep roadways and study on its control technique[J].Chinese Journal of Rock Mechanics and Engineering,1999,18(1):70-74.
[6]张华磊,王连国,涂敏,等.采动环境下巷道围岩破裂演化规律及其控制技术研究[J].采矿与安全工程学报,2013,30(5):653-658.ZHANG Hualei,WANG Lianguo,TU Min,et al.Study on failure evolution laws and control technology of roadway surrounding rock under mining circumstances[J].Journal of Mining and Safety Engineering,2013,30(5):653-658.
[7]孙希奎,常庆粮,施现院,等.大断面半圆拱煤巷围岩松动圈厚度测定及分布规律[J].煤炭科学技术,2016,44(11):1-6.SUN Xikui,CHANG Qingliang,SHI Xianyuan,et al.Thickness measurement and distribution law of loose rings of surrounding rock in large cross section semicircle arch seam gateway[J].Coal Science and Technology,2016,44(11):1-6.
[8]陈秋南,黄小城,谢小鱼.基于Hoek-Brown准则对围岩松动圈半径的推导及改进[J].应用力学学报,2015,32(2):304-310.CHEN Qiunan,HUANG Xiaocheng,XIE Xiaoyu.Derivation of the radius of the broken rock zone based on hoek-brown criterion and its improvement[J].Chinese Journal of Applied Mechanics,2015,32(2):304-310.
[9]顾大钊.煤矿地下水库理论框架和技术体系[J].煤炭学报,2015,40(2):239-246.GU Dazhao.Theory framework and technological system of coal mine underground reservoir[J].Journal of China Coal Society,2015,40(2):239-246.
[10]顾大钊,张勇,曹志国.我国煤炭开采水资源保护利用技术研究进展[J].煤炭科学技术,2016,44(1):1-7.GU Dazhao,ZHANG Yong,CAO Zhiguo.Technical progress of water resource protection and utilization by coal mining in China[J].Coal Science and Technology,2016,44(1):1-7.
[11]陈苏社,黄庆享,薛刚,等.大柳塔煤矿地下水库建设与水资源利用技术[J].煤炭科学技术,2016,44(8):21-28.CHEN Sushe,HUANG Qingxiang,XUE Gang,et al.Technology of underground reservoir construction and water resource utilization in Daliuta Coal Mine[J].Coal Science and Technology,2016,44(8):21-28.
[12]赵彦钵,吴瑞祥,李政林,等.极限拉应变准则在围岩松动圈模拟中的应用[J].地下空间与工程学报,2014,10(2):315-321.ZHAO Yanbo,WU Ruixiang,LI Zhenglin,et al.Application of ultimate tensile strain criteria to simulate the loose zone of surrounding rock[J].Chinese Journal of Underground Space and Engineering,2014,10(2):315-321.
[13]钱鸣高,石平五,许家林.矿山压力与岩层控制[M].中国矿业大学出版社,2010.
[14]黄庆享.浅埋煤层的矿压特征与浅埋煤层定义[J].岩石力学与工程学报,2002,21(8):1174-1177.HUANG Qingxiang.Ground pressure behavior and definition of shallow seams[J].Chinese Journal of Rock Mechanics and Engineering,2002,21(8):1174-1177.
[15]屠世浩,白庆升,屠洪盛.浅埋煤层综采面护巷煤柱尺寸和布置方案优化[J].采矿与安全工程学报,2011,28(4):505-510.TU Shihao,BAI Qingsheng,TU Hongsheng.Pillar size determination and panel layout optimization for fully mechanized faces in shallow seams[J].Journal of Mining and Safety Engineering,2011,28(4):505-510.
[16]王方田.浅埋房式采空区下近距离煤层长壁开采覆岩运动规律及控制[D].徐州:中国矿业大学,2012.
[17]黄庆享,周金龙.浅埋煤层大采高工作面矿压规律及顶板结构研究[J].煤炭学报,2016,41(S2):279-286.HUANG Qingxiang,ZHOU Jinlong.Roof weighting behavior and roof structure of large mining height longwall face in shallow coal seam[J].Journal of China Coal Society,2016,41(S2):279-286.
[18]白庆升,屠世浩,袁永,等.基于采空区压实理论的采动响应反演[J].中国矿业大学学报,2013,42(3):355-361.BAI qingsheng,TU shihao,YUAN yong,et al.Back analysis of mining induced response on the basis of goaf compaction theory[J].Journal of China University of Mining&Technology,2013,42(3):355-361.