Identification and application of key parameters of bolt support for roadways with extra-thick mudstone roof

doi:10.16265/j.cnki.issn1003-3033.2017.07.022

Abstract

Abstract: To analyze the sensitivity of bolt support parameters for roadways with extra-thick mudstone roof, the panel 15107 in Huangyanhui colliery was taken as engineering background, theoretical analysis, numerical simulation and field industrial test method were adopted to investigate the influence of bolt length, bolt spacing, bolt preload, anchor length, anchor spacing and anchor preload on the stability of the roadway. A mechanical model of roadway roof was also built, and a method of determining the spacing of cable was given. The results show that the order of bolt support parameters, by their effects on the stabilty, is anchor spacing, bolt preload, anchor preload, bolt length, bolt spacing and anchor length,anchor spacing is the most significant factor affecting the stability. Field application shows that reasonable anchor spacing can effectively control the deformation and failure of the roadway.

Key words: extra-thick mudstone roof, orthogonal experiment, bolt support, sensitivity, numerical simulation

CLC Number:

X936

MA Zhenqian, JIANG Yaodong, ZUO Yujun, CAO Yunqin. Identification and application of key parameters of bolt support for roadways with extra-thick mudstone roof[J]. China Safety Science Journal, 2017, 27(7): 121-126.

References

[1] 贾明魁. 岩层组合劣化型冒顶机制研究[J]. 岩土力学,2007,28(7):1 343-1 347.
JIA Mingkui. Research on roof falling mechanism of deteriorative strata combination supported by bolts[J]. Rock and Soil Mechanics,2007,28(7):1 343-1 347.
[2] 鞠文君,周寅生. 锚杆支护巷道安全监测技术[J]. 中国安全科学学报,2004,14(10):105-108.
JU Wenjun,ZHOU Yinsheng. Monitoring technology for rock bolting engineering [J]. China Safety Science Journal,2004,14(10):105-108.
[3] 朱川曲,施式亮,王卫军. 煤巷锚杆支护结构的可靠性分析[J]. 中国安全科学学报,2004,14(9):95-98.
ZHU Chuanqu,SHI Shiliang,WANG Weijun. Reliability analysis of bolt support structure of coal roadway [J]. China Safety Science Journal,2004,14(9):95-98.
[4] 高富强,王兴库. 回采巷道锚杆支护参数敏感性正交试验分析[J]. 煤炭科学技术,2007,35(11):68-72.
GAO Fuqiang,WANG Xingku. Analysis of sensitive normal test of bolt support parameters for mining gateway [J]. Coal Science and Technology,2007,35(11):68-72.
[5] 孟超,李学华. 沿空掘巷锚杆支护参数敏感性分析与应用[J]. 中国煤炭,2013,39(3):45-49.
MENG Chao,LI Xuehua. Analysis and application of parameters sensitivity of bolt support in gob-side entry driving [J]. Coal Science and Technology,2013,39(3):45-49.
[6] 牛双建,党元恒,王东. 煤巷顶板锚索补强支护参数敏感性分析[J]. 煤矿安全,2015,46(8):227-229.
NIU Shuangjian,DANG Yuanheng,WANG Dong. Sensitivity analysis of anchor reinforcement support parameters on roof stability of coal roadway [J]. Safty in Coal Mines,2015,46(8):227-229.
[7] 胡建军,王金安.松软破碎煤层巷道锚网支护关键因素[J].采矿与安全工程学报,2008,25(2):139-143.
HU Jianjun,WANG Jin'an.Key factors affecting bolt-mesh supporting for roadway in soft-broken coal seam [J].Journal of Mining & Safety Engineering,2008,25(2):139-143.
[8] 付玉凯,鞠文君.影响软岩巷道变形因素的正交数值模拟试验研究[J].采矿与安全工程学报,2013,30(6):812-816.
FU Yukai,JU Wenjun.Study on affecting factors of soft rock deformation with orthogonal numerical simulation test [J].Journal of Mining & Safety Engineering,2013,30(6):812-816.
[9] 种照辉,李学华,姚强岭.等.基于正交试验煤岩互层顶板巷道失稳因素研究[J].中国矿业大学学报,2015,44(2):220-226.
CHONG Zhaohui,LI Xuehua,YAO Qiangling,et al.Orthogonal experimental research on instability factor of roadway with coal-rock interbeded roof [J].Journal of China University of Mining & Technology,2015,44(2):220-226.
[10] 严红,张吉雄,王思贵,等.特厚煤层巷道顶板离层关键影响因素模拟研究[J].采矿与安全工程学报,2014,31(5):681-686.
YAN Hong,ZHANG Jixiong,WANG Sigui,et al.Simulation study on key factors influencing the roof abscission of the roadway with extra-thick coal seam [J].Journal of Mining & Safety Engineering,2014,31(5):681-686.
[11] 高富强,王兴库.岩体力学参数敏感性正交数值模拟试验[J].采矿与安全工程学报,2008,25(1):95-98.
GAO Fuqiang,WANG Xingku.Orthogonal numerical simulation of sensitivity of rock mechanical parameters[J].Journal of Mining & Safety Engineering,2008,25(1):95-98.
[12] 李爱兵.边坡稳定性影响因素敏感度的正交极差分析方法[J].勘察科学技术,1995(4):28-31.
LI Aibing.Orthogonal polar difference analysis method of the sensitivity of the influencing factors for slope stability[J].Site Investigation Science and Technology,1995(4):28-31.
[13] 王金华,康红普,高富强. 锚索支护传力机制与应力分布的数值模拟[J]. 煤炭学报,2008,33(1):1-6.
WANG Jinhua,KANG Hongpu,GAO Fuqiang. Numerical simulation of load-transfer mechanisms and stress distribution characteristics of cable bolts [J].Journal of China Coal Society,2008,33(1):1-6.
[14] 苏学贵,宋选民,李浩春,等.特厚松软复合顶板巷道拱-梁耦合支护结构的构建及应用研究[J].岩石力学与工程学报,2014,33(9):1 828-1 836.
SU Xuegui,SONG Xuanmin,LI Haochun,et al.Study on coupled arch-beam support structure of roadway with extra-thick soft compound roof [J].Chinese Journal of Rock Mechanics and Engineering,2014,33(9):1 828-1 836.

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