深井交岔点围岩流变扰动效应及钢管混凝土组合支架支护技术研究
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摘要
为解决深井软岩巷道交岔点支护难题,以华丰煤矿-1100中央泵房与内外水仓联络通道交岔点为研究对象,采用现场调研、岩石参数测试、流变扰动试验及理论分析方法,揭示围岩流变扰动效应是交岔点变形破坏的关键因素,由此提出钢管混凝土支护技术,并设计基于钢管混凝土组合支架的交岔点返修支护方案。通过有限元分析、理论计算和二次流变扰动试验,验证组合支架承载力基本满足动压扰动作用下的围岩稳定需求。依据工程实践优化,使交岔点基于钢管混凝土组合支架的复合支护方案应用5 a来持续稳定,支架虽缓慢变形但交岔点整体稳定。研究表明千米深井交岔点变形机制复杂,支护体在流变扰动作用下极易破坏;钢管混凝土组合支架结构合理,承载力大,抗流变扰动能力高,结合壁后卸压技术在千米深井巷道交岔点支护中具有较大的应用价值和研究意义,可为其他类似支护研究提供良好借鉴。
The roadway intersection linking 1100 central pump station and water tank of Huafeng coal mine was investigated in order to solve the supporting problem of roadway intersection at the depth of 1 000 m.The key factor affecting the deformation and failure of intersection was revealed to be the rheological perturbation effect of rock based on the results of field investigation,experimental tests,rheological experiment on rock and theoretical analysis.The supporting technology of concrete filled steel tube was put forward,and the repairing scheme of the intersection support based on the composite support with concrete filled steel tubes was designed.The results of the finite element analysis,the theoretical calculation and the second rheological perturbation experiment,indicate that the bearing capacity of the composite support meets the stability requirements of the surrounding rock under the action of dynamic pressures.The composite support scheme employing the concrete filled steel tubes has been stable for 5 years.Overall,the intersection is stable and the support deforms slowly.The research indicates that the deformation mechanism of the intersection at 1 000 m deep is complex and the support structures are easy to damage due to the rheological disturbance.
The roadway intersection linking 1100 central pump station and water tank of Huafeng coal mine was investigated in order to solve the supporting problem of roadway intersection at the depth of 1 000 m.The key factor affecting the deformation and failure of intersection was revealed to be the rheological perturbation effect of rock based on the results of field investigation,experimental tests,rheological experiment on rock and theoretical analysis.The supporting technology of concrete filled steel tube was put forward,and the repairing scheme of the intersection support based on the composite support with concrete filled steel tubes was designed.The results of the finite element analysis,the theoretical calculation and the second rheological perturbation experiment,indicate that the bearing capacity of the composite support meets the stability requirements of the surrounding rock under the action of dynamic pressures.The composite support scheme employing the concrete filled steel tubes has been stable for 5 years.Overall,the intersection is stable and the support deforms slowly.The research indicates that the deformation mechanism of the intersection at 1 000 m deep is complex and the support structures are easy to damage due to the rheological disturbance.
引文
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[16]王军,陈锋,刘国磊,等.千米深井巷道钢管混凝土支架支护技术应用[J].隧道建设,2013,33(9):774–778.(WANG Jun,CHEN Feng,LIU Guolei,et al.Application of concrete-filled steel tube support in the repairing of 1 000 m-deep roadway[J].Tunnel Construction,2013,33(9):774–778.(in Chinese))
[17]乔彦伟.地应力测量技术在煤矿开采中的应用[硕士学位论文][D].包头:内蒙古科技大学,2014.(QIAO Yanwei.The application of the in-situ stress measurement technique in coal mining[M.S.Thesis][D].Baotou:Inner Mongolia University of Science and Technology,2014.(in Chinese))
[18]高延法,范庆忠,崔希海,等.岩石流变及其扰动效应试验研究[M].北京:中国科学出版社,2007:18–27.(GAO Yanfa,FAN Qingzhong,CUI Xihai,et al.Rock rheological disturbance effect and its experimental study[M].Beijing:China Science Press,2007:18–27.(in Chinese))
[19]高延法,肖华强,王波,等.岩石流变扰动效应试验及其本构关系研究[J].岩石力学与工程学报,2008,27(增1):3 180–3 185.(GAO Yanfa,XIAO Huaqiang,WANG Bo,et al.A rheological test of sandstone with perturbation effect and its constitutive relationship study[J].Chinese Journal of Rock Mechanics and Engineering,2008,27(Supp.1):3 180–3 185.(in Chinese))
[20]崔希海,付志亮.岩石流变特性及长期强度的试验研究[J].岩石力学与工程学报,2006,25(5):1 021–1 024.(CUI Xihai,FU Zhiliang.Experimental study on rheology properties and long-term strength of rocks[J].Chinese Journal of Rock Mechanics and Engineering,2006,25(5):1 021–1 024.(in Chinese))
[21]杨晓杰,彭涛,李桂刚,等.云冈石窟立柱岩体长期强度研究[J].岩石力学与工程学报,2009,28(增2):3 402–3 408.(YANG Xiaojie,PENG Tao,LI Jiagang,et al.Study on long term strength of pillar rock mass at Yungang grottoes[J].Chinese Journal of Rock Mechanics and Engineering,2009,28(Supp.2):3 402–3 408.(in Chinese))
[22]刘传孝,贺加栋,张美政,等.深部坚硬细砂岩长期强度试验[J].采矿与安全工程学报,2010,27(4):581–584.(LIU Chuanxiao,HE Jiadong,ZHUANG Meizheng,et al.Long-term strength test and application of hard fine sandstone in deep site[J].Journal of Mining and Safely Engineering,2010,27(4):581–584.(in Chinese))
[23]黄万朋,高延法,王军.扰动作用下深部岩巷长期大变形机制及控制技术[J].煤炭学报,2014,39(5):822–828.(HUANG Wanpeng,GAO Yanfa,WANG Jun.Deep rock tunnel?s long large deformation mechanism and control technology under disturbance effects[J].Journal of China Coal Society,2014,39(5):822–828.(in Chinese))
[24]蔡绍怀.现代钢管混凝土结构(修订版)[M].北京:人民交通出版社,2007:127–142.(CHAI Shaohuai.Modern concrete filled steel tubular structures:Revised Edition[M].Beijing:China Communication Press,2007:127–142.(in Chinese))
[25]高延法,王军,黄万朋,等.直墙半圆拱形钢管混凝土支架力学性能试验及应用[J].隧道建设,2014,(1):6–12.(GAO Yanfa,WANG Jun,HUANG Wanpeng,et al.Experiment on mechanical property of straight-wall semicircle-arch concrete-filled steel tube support and its application[J].Tunnel Construction,2014,(1):6–12.(in Chinese))
[26]王军.钢管混凝土组合支架圆弧拱的抗弯力学性能试验研究与工程应用[博士学位论文][D].北京:中国矿业大学(北京),2014.(WANG Jun.Research on mechanical properties of anti-bending for Concrete filled Steel Tube circular arch and its application[Ph.D.Thesis][D].Beijing:China University of Mining and Technology(Beijing),2014.(in Chinese))
[2]杨仁树,薛华俊,郭东明,等.复杂岩层大断面硐室群围岩破坏机制及控制[J].煤炭学报,2015,40(10):2 234–2 242.(YANG Renshu,XUE Huajun,GUO Dongming,et al.Failure mechanism of surrounding rock of large section chambers in complex rock formations and its control[J].Journal of China Coal Society,2015,40(10):2 234–2 242.(in Chinese))
[3]何满潮,李国峰,刘哲,等.兴安矿深部软岩巷道交岔点支护技术[J].采矿与安全工程学报,2007,24(2):127–131.(HE Manchao,LI Guofeng,LIU Zhe,et al.Countermeasures aiming at the support for crossing roadway of deeply buried soft rocks in Xing?an coal mine[J].Journal of Mining and Safety Engineering,2007,24(2):127–131.(in Chinese))
[4]王成,张农,李桂臣,等.巷道交岔点的数值模拟分析与支护[J].采矿与安全工程学报,2008,25(4):384–388.(WANG Cheng,ZHANG Nong,LI Guichen,et al.Numerical simulation and support of roadway intersection[J].Journal of Mining and Safety Engineering,2008,25(4):384–388.(in Chinese))
[5]韩贵雷,贾玉琴.大断面巷道交岔点破坏机制分析及支护研究[J].矿业研究与开发,2009,29(4):27–30.(HAN Guilei,JIA Yuqin.Study on failure mechanism and support of cross roadway with large span[J].Mining Research and Development,2009,29(4):27–30.(in Chinese))
[6]孟益平,祝金龙,郭家标.复杂条件下交岔点巷道支护技术研究[J].地下空间与工程学报,2015,11(增2):585–590.(MENG Yiping,ZHU Jinlong,GUO Jiabiao.Research on the support technology of crossing roadways in complicated conditions[J].Chinese Journal of Underground Space and Engineering,2015,11(Supp.2):585–590.(in Chinese))
[7]何晓升,刘珂铭,张磊,等.极软岩巷道交岔点钢管混凝土支架结构设计与应用[J].煤炭学报,2015,40(9):2 040–2 048.(HE Xiaosheng,LIU Keming,ZHANG Lei,et al.Structural design and application of concrete-filled steel tube support at extremely soft rock roadway intersection[J].Journal of China Coal Society,2015,40(9):2 040–2 048.(in Chinese))
[8]曹日红,曹平,林杭,等.巷道交叉段围岩变形规律及安全度分析[J].采矿与安全工程学报,2013,30(5):728–734.(CAO Rihong,CAO Ping,LIN Hang,et al.Deformation law and safety degree of surrounding rock in roadway intersection[J].Journal of Mining and Safety Engineering,2013,30(5):728–734.(in Chinese))
[9]郭保华,陆庭侃.巷道交岔点合理支护参数正交优化[J].地下空间与工程学报,2007,3(增1):1 195–1 198+1 211.(GUO Baohua,LU Tingkan.Orthogonal optimization of reasonable reinforcement parameters for roadway intersection[J].Chinese Journal of Underground Space and Engineering,2007,3(Supp.1):1 195–1 198+1 211.(in Chinese))
[10]柴华彬,张彦宾,程立朝,等.深部巷道交岔点围岩变形及稳定性研究[J].采矿与安全工程学报,2010,27(2):200–204.(CHAI Huabin,ZHANG Yanbin,CHENG Lichao,etal.Research on deformation and stability of wall rocks in intersection of laneway in deep mine[J].Journal of Mining and Safety Engineering,2010,27(2):200–204.(in Chinese))
[11]高延法,王波,王军,等.深井软岩巷道钢管混凝土支架支护结构性能试验及应用[J].岩石力学与工程学报,2010,29(增1):2 604–2 609.(GAO Yanfa,WANG Bo,WANG Jun,et al.Structure performance test and application of concrete-filled steel tube support of deep mine and soft rock roadway[J].Chinese Journal of Rock Mechanics and Engineering,2010,29(Supp.1):2 604–2 609.(in Chinese))
[12]李学彬,高延法,杨仁树,等.巷道支护钢管混凝土支架力学性能测试与分析[J].采矿与安全工程学报,2013,30(6):817–821.(LI Xuebin,GAO Yanfa,YANG Renshu,et al.Mechanical performance testing and analysis of steel tuber confined concrete supports in roadway supporting[J].Journal of Mining and Safety Engineering,2013,30(6):817–821.(in Chinese))
[13]李学彬,杨仁树,高延法,等.大断面软岩斜井高强度钢管混凝土支架支护技术[J].煤炭学报,2013,38(10):1 742–1 748.(LI Xuebin,YANG Renshu,GAO Yanfa,et al.High-strength steel tubular confined concrete supports support technology for large section soft rock inclined shaft[J].Journal of China Coal Society,2013,38(10):1 742–1 748.(in Chinese))
[14]高延法,刘珂铭,冯绍伟,等.早强混凝土试验与极软岩巷道钢管混凝土支架应用研究[J].采矿与安全工程学报,2015,32(4):537–543.(GAO Yanfa,LIU Keming,FENG Shaowei,et al.Early strength concrete experiment and applied research of early strength concrete-filled steel tubular supports in extremely soft rock roadways[J].Journal of Mining and Safety Engineering,2015,32(4):537–543.(in Chinese))
[15]李学彬,杨仁树,高延法,等.杨庄矿软岩巷道锚杆与钢管混凝土支架联合支护技术研究[J].采矿与安全工程学报,2015,32(2):285–290.(LI Xuebin,YANG Renshu,GAO Yanfa,et al.Study on combined support technology of bolt-mesh-shot crete and concrete filled steel tubular supports for soft rock roadway in Yangzhuang mine[J].Journal of Mining and Safety Engineering,2015,32(2):285–290.(in Chinese))
[16]王军,陈锋,刘国磊,等.千米深井巷道钢管混凝土支架支护技术应用[J].隧道建设,2013,33(9):774–778.(WANG Jun,CHEN Feng,LIU Guolei,et al.Application of concrete-filled steel tube support in the repairing of 1 000 m-deep roadway[J].Tunnel Construction,2013,33(9):774–778.(in Chinese))
[17]乔彦伟.地应力测量技术在煤矿开采中的应用[硕士学位论文][D].包头:内蒙古科技大学,2014.(QIAO Yanwei.The application of the in-situ stress measurement technique in coal mining[M.S.Thesis][D].Baotou:Inner Mongolia University of Science and Technology,2014.(in Chinese))
[18]高延法,范庆忠,崔希海,等.岩石流变及其扰动效应试验研究[M].北京:中国科学出版社,2007:18–27.(GAO Yanfa,FAN Qingzhong,CUI Xihai,et al.Rock rheological disturbance effect and its experimental study[M].Beijing:China Science Press,2007:18–27.(in Chinese))
[19]高延法,肖华强,王波,等.岩石流变扰动效应试验及其本构关系研究[J].岩石力学与工程学报,2008,27(增1):3 180–3 185.(GAO Yanfa,XIAO Huaqiang,WANG Bo,et al.A rheological test of sandstone with perturbation effect and its constitutive relationship study[J].Chinese Journal of Rock Mechanics and Engineering,2008,27(Supp.1):3 180–3 185.(in Chinese))
[20]崔希海,付志亮.岩石流变特性及长期强度的试验研究[J].岩石力学与工程学报,2006,25(5):1 021–1 024.(CUI Xihai,FU Zhiliang.Experimental study on rheology properties and long-term strength of rocks[J].Chinese Journal of Rock Mechanics and Engineering,2006,25(5):1 021–1 024.(in Chinese))
[21]杨晓杰,彭涛,李桂刚,等.云冈石窟立柱岩体长期强度研究[J].岩石力学与工程学报,2009,28(增2):3 402–3 408.(YANG Xiaojie,PENG Tao,LI Jiagang,et al.Study on long term strength of pillar rock mass at Yungang grottoes[J].Chinese Journal of Rock Mechanics and Engineering,2009,28(Supp.2):3 402–3 408.(in Chinese))
[22]刘传孝,贺加栋,张美政,等.深部坚硬细砂岩长期强度试验[J].采矿与安全工程学报,2010,27(4):581–584.(LIU Chuanxiao,HE Jiadong,ZHUANG Meizheng,et al.Long-term strength test and application of hard fine sandstone in deep site[J].Journal of Mining and Safely Engineering,2010,27(4):581–584.(in Chinese))
[23]黄万朋,高延法,王军.扰动作用下深部岩巷长期大变形机制及控制技术[J].煤炭学报,2014,39(5):822–828.(HUANG Wanpeng,GAO Yanfa,WANG Jun.Deep rock tunnel?s long large deformation mechanism and control technology under disturbance effects[J].Journal of China Coal Society,2014,39(5):822–828.(in Chinese))
[24]蔡绍怀.现代钢管混凝土结构(修订版)[M].北京:人民交通出版社,2007:127–142.(CHAI Shaohuai.Modern concrete filled steel tubular structures:Revised Edition[M].Beijing:China Communication Press,2007:127–142.(in Chinese))
[25]高延法,王军,黄万朋,等.直墙半圆拱形钢管混凝土支架力学性能试验及应用[J].隧道建设,2014,(1):6–12.(GAO Yanfa,WANG Jun,HUANG Wanpeng,et al.Experiment on mechanical property of straight-wall semicircle-arch concrete-filled steel tube support and its application[J].Tunnel Construction,2014,(1):6–12.(in Chinese))
[26]王军.钢管混凝土组合支架圆弧拱的抗弯力学性能试验研究与工程应用[博士学位论文][D].北京:中国矿业大学(北京),2014.(WANG Jun.Research on mechanical properties of anti-bending for Concrete filled Steel Tube circular arch and its application[Ph.D.Thesis][D].Beijing:China University of Mining and Technology(Beijing),2014.(in Chinese))