锚固复合承载体强度变化规律及其稳定性研究
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摘要
当围岩的结构、力学性质条件一致时,锚固复合承载体的强度和几何参数主要由锚杆支护参数和几何参数决定的。文章计算了半圆拱形和矩形巷道的锚固承载体的几何参数以及强度,并建立了相应的力学模型,最终获得了锚固复合承载体强度计算简化公式,得出了提高锚固复合复合承载体的方法以及各参数与锚固复合承载体强度的变化规律。然后根据上覆潜在的松动岩层重量,建立了巷道顶板破坏范围计算模型,得出了锚固复合承载体的稳定性判据公式。研究为锚杆支护参数的设计提供理论基础。
When the structural and mechanical properties of the surrounding rock are consistent,the strength and geometric parameters of the anchor composite bearing are mainly determined by the bolt support parameters and geometric parameters.This paper calculates the geometric parameters and strength of the anchorage bearing body of semi-circular arch and rectangular roadway,establishes the corresponding mechanical model,and finally obtains the simplified formula for calculating the strength of the anchorage composite bearing body,and obtains the method for improving the strength of the anchorage composite bearing body,as well as the variation law of each parameter and the strength of the anchorage composite bearing body.Then according to the weight of the overlying loose rock stratum,the calculation model of the roof roof failure range is established,and the stability criterion formula of the anchor composite carrier is obtained.The study provides a theoretical basis for the design of bolt support parameters.
When the structural and mechanical properties of the surrounding rock are consistent,the strength and geometric parameters of the anchor composite bearing are mainly determined by the bolt support parameters and geometric parameters.This paper calculates the geometric parameters and strength of the anchorage bearing body of semi-circular arch and rectangular roadway,establishes the corresponding mechanical model,and finally obtains the simplified formula for calculating the strength of the anchorage composite bearing body,and obtains the method for improving the strength of the anchorage composite bearing body,as well as the variation law of each parameter and the strength of the anchorage composite bearing body.Then according to the weight of the overlying loose rock stratum,the calculation model of the roof roof failure range is established,and the stability criterion formula of the anchor composite carrier is obtained.The study provides a theoretical basis for the design of bolt support parameters.
引文
[1] 张益东,程亮,杨锦峰,等.锚杆支护密度对锚固复合承载体承载特性影响规律试验研究[J].采矿与安全工程学报,2015,32(2):305-309.Zhang Yidong,Cheng Liang,Yang Jinfeng,et al.Experimental study on influence of anchor support density on bearing characteristics of anchor composite bearing[J].Journal of Mining & Safety Engineering,2015,32(2):305-309.
[2] 程亮.锚杆长度对锚固复合承载体承载特性的影响规律及长度设计研究[D].徐州:中国矿业大学,2014.
[3] 余伟健,高谦,张周平,等.软岩硐室让压支护设计及承载体强度分析[J].岩土锚固工程,2009(4):26-34.Yu Weijian,Gao Qian,Zhang Zhouping,et al.Soft rock chamber pressure support design and bearing strength analysis[J].Geotechnical Anchoring Engineering,2009(4):26-34.
[4] 李新平,王涛,宋桂红,等.锚固层状岩体的复合加固理论与数值模拟试验分析[J].岩石力学与工程学报,2006,25(s2):3654-3660.Li Xinping,Wang Tao,Song Guihong,et al.Composite reinforcement theory and numerical simulation test analysis of anchored layered rock mass[J].Chinese Journal of Rock Mechanics and Engineering,2006,25(s2):3654-3660.
[5] 王超,赵光明,孟祥瑞.考虑锚固复合承载体效应的巷道安全支护参数分析[J].金属矿山,2015,44(8):53-57.Wang Chao,Zhao Guangming,Meng Xiangrui.Parameter analysis of roadway safety support considering anchorage composite bearing effect[J].Metal Mine,2015,44(8):53-57.
[6] 崔海龙.基于锚固复合承载体的巷道锚杆支护技术[J].机械管理开发,2016(6):115-117.Cui Hailong.Roadway bolt support technology based on anchor composite carrier[J].Mechanical Management and Development,2016(6):115-117.
[7] 文志杰,蒋宇静,宋振骐,等.沿空留巷围岩结构灾变系统及控制力学模型研究[J].湖南科技大学学报(自然科学版),2011,26(3):12-16.Wen Zhijie,Jiang Yujing,Song Zhenqi,et al.Study on catastrophic system and control mechanics model of surrounding rock structure in retaining roadway along the goaf[J].Journal of Hunan University of Science & Technology(Natural Science Edition),2011,26(3):12-16.
[8] 张益东.锚固复合承载体承载特性研究及在巷道锚杆支护设计中的应用[D].徐州:中国矿业大学,2013.
[9] 袁坤,张玉芳,李健,等.预制内锚头新型锚索锚固性能研究及工程应用[J].岩石力学与工程学报,2018,37(1):77-86.Yuan Kun,Zhang Yufang,Li Jian,et al.Research and application of anchorage performance of new anchor cable for prefabricated internal anchor head[J].Chinese Journal of Rock Mechanics and Engineering,2018,37(1):77-86.
[10] 杨校辉,朱彦鹏,郭楠,等.软岩深基坑预应力锚杆承载特性与滑移面确定试验研究[J].岩石力学与工程学报,2014,33(s2):4287-4298.Yang Xiaohui,Zhu Yanpeng,Guo Nan,et al.Experimental study on bearing behavior and slip surface of prestressed anchors in soft rock deep foundation pits[J].Chinese Journal of Rock Mechanics and Engineering,2014,33(s2):4287-4298.
[11] 邢龙龙.大跨度切眼巷道锚杆(索)支护技术研究[D].西安:西安科技大学,2008.
[12] 王金华.全煤巷道锚杆锚索联合支护机理与效果分析[J].煤炭学报,2012,37(1):1-7.Wang Jinhua.Analysis on mechanism and effect of rock bolts and cables in gate road with coal seam as roof[J].Journal of China Coal Society,2012,37(1):1-7.
[13] 魏世义.深井破碎顶板大断面开切眼支护参数优化研究[J].煤炭科学技术,2013,41(4):28-35.Wei Shiyi.Study on support parameters optimization of large cross section open-off cut with broken roof in deep underground mine[J].Coal Science and Technology,2013,41(4),28-35.
[14] 赵兴东,岳西峰,唐春安,等.切眼围岩破坏规律研究[J].辽宁工程技术大学学报,2005,24(3):357-359.Zhao Xingdong,Yue Xifeng,Tang Chun′an,et al.Study on destructional law of open-off cut surrounding rock mass[J].Journal of Liaoning Technical University,2005,24(3):357-359.
[15] 曲光,马念杰,李新元,等.大断面全煤切眼优化设计及变形规律[J].煤炭工程,2007(4):11-14.Qu Guang,Ma Nianjie,Li Xinyuan,et al.Optimization design and deformation law of open-cut with large section[J].Coal Engineering,2007(4):11-14.
[16] 常聚才.深井复合顶板回采巷道支护技术研究[J].煤炭科学技术,2016,44(6):60-63.Chang Jucai.Study on complex roof support technology of mining gateway in deep mine[J].Journal of China Coal Society,2016,44(6):60-63.
[17] 康红普,吴拥政,李建波.锚杆支护组合构件的力学性能与支护效果分析[J].煤炭学报,2010,35(7):1057-1065.Kang Hongpu,Wu Yongzheng,Li Jianbo.Analysis on mechanical performance and supporting function of combination components for rock bolting[J].Journal of China Coal Society,2010,35(7):1057-1065.
[18] 张东,苏刚,程晋孝.深井大采高工作面切眼联合支护技术[J].煤炭学报,2010,35(11):1883-1887.Zhang Dong,Su Gang,Cheng Jinxiao.Combined support technology of open-off cut for high cutting fully-mechanized coal mining face in deep mine[J].Journal of China Coal Society,2010,35(11):1883-1887.
[2] 程亮.锚杆长度对锚固复合承载体承载特性的影响规律及长度设计研究[D].徐州:中国矿业大学,2014.
[3] 余伟健,高谦,张周平,等.软岩硐室让压支护设计及承载体强度分析[J].岩土锚固工程,2009(4):26-34.Yu Weijian,Gao Qian,Zhang Zhouping,et al.Soft rock chamber pressure support design and bearing strength analysis[J].Geotechnical Anchoring Engineering,2009(4):26-34.
[4] 李新平,王涛,宋桂红,等.锚固层状岩体的复合加固理论与数值模拟试验分析[J].岩石力学与工程学报,2006,25(s2):3654-3660.Li Xinping,Wang Tao,Song Guihong,et al.Composite reinforcement theory and numerical simulation test analysis of anchored layered rock mass[J].Chinese Journal of Rock Mechanics and Engineering,2006,25(s2):3654-3660.
[5] 王超,赵光明,孟祥瑞.考虑锚固复合承载体效应的巷道安全支护参数分析[J].金属矿山,2015,44(8):53-57.Wang Chao,Zhao Guangming,Meng Xiangrui.Parameter analysis of roadway safety support considering anchorage composite bearing effect[J].Metal Mine,2015,44(8):53-57.
[6] 崔海龙.基于锚固复合承载体的巷道锚杆支护技术[J].机械管理开发,2016(6):115-117.Cui Hailong.Roadway bolt support technology based on anchor composite carrier[J].Mechanical Management and Development,2016(6):115-117.
[7] 文志杰,蒋宇静,宋振骐,等.沿空留巷围岩结构灾变系统及控制力学模型研究[J].湖南科技大学学报(自然科学版),2011,26(3):12-16.Wen Zhijie,Jiang Yujing,Song Zhenqi,et al.Study on catastrophic system and control mechanics model of surrounding rock structure in retaining roadway along the goaf[J].Journal of Hunan University of Science & Technology(Natural Science Edition),2011,26(3):12-16.
[8] 张益东.锚固复合承载体承载特性研究及在巷道锚杆支护设计中的应用[D].徐州:中国矿业大学,2013.
[9] 袁坤,张玉芳,李健,等.预制内锚头新型锚索锚固性能研究及工程应用[J].岩石力学与工程学报,2018,37(1):77-86.Yuan Kun,Zhang Yufang,Li Jian,et al.Research and application of anchorage performance of new anchor cable for prefabricated internal anchor head[J].Chinese Journal of Rock Mechanics and Engineering,2018,37(1):77-86.
[10] 杨校辉,朱彦鹏,郭楠,等.软岩深基坑预应力锚杆承载特性与滑移面确定试验研究[J].岩石力学与工程学报,2014,33(s2):4287-4298.Yang Xiaohui,Zhu Yanpeng,Guo Nan,et al.Experimental study on bearing behavior and slip surface of prestressed anchors in soft rock deep foundation pits[J].Chinese Journal of Rock Mechanics and Engineering,2014,33(s2):4287-4298.
[11] 邢龙龙.大跨度切眼巷道锚杆(索)支护技术研究[D].西安:西安科技大学,2008.
[12] 王金华.全煤巷道锚杆锚索联合支护机理与效果分析[J].煤炭学报,2012,37(1):1-7.Wang Jinhua.Analysis on mechanism and effect of rock bolts and cables in gate road with coal seam as roof[J].Journal of China Coal Society,2012,37(1):1-7.
[13] 魏世义.深井破碎顶板大断面开切眼支护参数优化研究[J].煤炭科学技术,2013,41(4):28-35.Wei Shiyi.Study on support parameters optimization of large cross section open-off cut with broken roof in deep underground mine[J].Coal Science and Technology,2013,41(4),28-35.
[14] 赵兴东,岳西峰,唐春安,等.切眼围岩破坏规律研究[J].辽宁工程技术大学学报,2005,24(3):357-359.Zhao Xingdong,Yue Xifeng,Tang Chun′an,et al.Study on destructional law of open-off cut surrounding rock mass[J].Journal of Liaoning Technical University,2005,24(3):357-359.
[15] 曲光,马念杰,李新元,等.大断面全煤切眼优化设计及变形规律[J].煤炭工程,2007(4):11-14.Qu Guang,Ma Nianjie,Li Xinyuan,et al.Optimization design and deformation law of open-cut with large section[J].Coal Engineering,2007(4):11-14.
[16] 常聚才.深井复合顶板回采巷道支护技术研究[J].煤炭科学技术,2016,44(6):60-63.Chang Jucai.Study on complex roof support technology of mining gateway in deep mine[J].Journal of China Coal Society,2016,44(6):60-63.
[17] 康红普,吴拥政,李建波.锚杆支护组合构件的力学性能与支护效果分析[J].煤炭学报,2010,35(7):1057-1065.Kang Hongpu,Wu Yongzheng,Li Jianbo.Analysis on mechanical performance and supporting function of combination components for rock bolting[J].Journal of China Coal Society,2010,35(7):1057-1065.
[18] 张东,苏刚,程晋孝.深井大采高工作面切眼联合支护技术[J].煤炭学报,2010,35(11):1883-1887.Zhang Dong,Su Gang,Cheng Jinxiao.Combined support technology of open-off cut for high cutting fully-mechanized coal mining face in deep mine[J].Journal of China Coal Society,2010,35(11):1883-1887.