巨高巷道围岩稳定及控制

doi:10.13722/j.cnki.jrme.2014.s2.063

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摘要为解决巨高巷道的控制难题，选取山西某煤矿5205轨道巷超高段(断面：5.25×8 m)为研究对象，采用UDEC模拟巷高3.5～8.0 m过程中围岩响应特征，可以得出：(1) 偏应力分布形态均呈浅部升高，深部降低分布；两帮偏应力极大值降低，顶、底板的偏应力极大值升高，且偏应力极大值向深部转移，偏应力变化程度：帮＞顶板＞底板。(2) 围岩变形范围：帮＞顶板＞底板；围岩最大变形增加量：顶板＞帮＞底板。(3) 裂隙场呈“半椭圆”状分布，由里向外依次为：裂隙贯通区、裂隙发育区、微裂隙区。通过平衡拱分析得出，巷高增加使平衡拱迹线外移，即，帮最大不稳定宽度增加，顶板冒落拱增加，顶压增加。认为：(1) 群锚效应可减小围岩的碎胀变形。(2) 斜拉锚索可以穿过帮不稳定三角块锚固在肩角、底角无裂隙区。(3) 高性能高预紧力锚杆支护提高围岩力学参数(如内摩擦角)，相当于缩小平衡拱迹线。基于此提出高强高预紧力锚带网和帮斜拉锚索梁联合控制技术。巨高巷道支护完成后10 d实现自稳，顶底板相对移近量104 mm，两帮相对移近量150 mm，顶板累计离层3.5 mm。

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	许磊1
	吴焕凯2
	李博3
	肖同强4

关键词 ：岩石力学, 超高巷道, 偏应力, 裂隙, 平衡拱, 支护

Abstract：In order to investigate ground control of ultra-high roadway. The ultrahigh segment(section：5.25×8 m) of No. 5205 rail roadway in a mine was selected as research object，the surrounding rock response characteristic in the process of height from 3.5 m to 8 m was simulated by UDEC. Research results show that：(1) Deviatoric stress increases in shallow part and decrease in depth；Deviatoric stress maximum in sides decreases，also the maximum in roof and floor increases and transfers to the deeper；Deviatoric stress change degree：sides＞roof＞floor. (2) Surrounding rock deformation scope：sides＞roof＞floor and its maximal deformation increasing amount：roof＞sides＞floor. (3) Fracture fields are all distributed as semi-ellipse，which has fracture transfixion area，fracture area and microfracture area from the shallow to the deep. It shows that balanced arch contour become larger with roadway height increasing by analyzing balanced arch. That is the maximum un-stable width of sides，roof caving arch height and roof pressure are all increaseing. Realiszed that：(1) Anchor group effect reduces surrounding rock bulking deformation. (2) Diagonal cable could be anchoraged in the shoulder and bottom angle no fracture areas through un-stable triangle block. (3) High performance and pretension bolt support can enhance mechanical parameters such as internal friction angle，which could reduces balanced contour. Based on this，the combined support technology of high strength and high pre-stressing bolt net bar and sides diagonal cable beam is proposed. Self-stabilization period of ultra-high roadway is 10 days，roof-to-floor relative convergence is 104 mm，both sides relative convergence is 150 mm，the total roof separation is 3.5 mm.

Key words： rock mechanics ultra-high roadway deviatoric stress fracture balanced arch support

引用本文:

许磊1，吴焕凯2，李博3，肖同强4. 巨高巷道围岩稳定及控制[J]. 岩石力学与工程学报, 2014, 33(S2): 3891-3902.
XU Lei1，WU Huankai2，LI Bo3，XIAO Tongqiang4. STABILITY AND CONTROL OF SURROUNDING ROCK IN ULTRA-HIGH ROADWAY. , 2014, 33(S2): 3891-3902.

链接本文:

https://rockmech.whrsm.ac.cn/CN/10.13722/j.cnki.jrme.2014.s2.063 或 https://rockmech.whrsm.ac.cn/CN/Y2014/V33/IS2/3891

[1]	高明忠，金文城，郑长江，等. 采动裂隙网络实时演化及连通性特征[J]. 煤炭学报，2012，37(9)：1535-1540.(GAO Mingzhong，JIN Wencheng，ZHENG Changjiang，et al.Real-time evolution and connectivity of mined crack network[J]. Journal of China Coal Society，2012，37(9)：1535-1540.(in Chinese))
[2]	张波，李术才，张敦福，等. 含充填节理岩体相似材料试件单轴压缩试验及断裂损伤研究[J]. 岩土力学，2012，33(6)：1647-1652.(ZHANG Bo，LI Shucai，ZHANG Dunfu，et al.Uniaxial compression tests on mechanical properties of rock mass similar material with cross-cracks[J]. Rock and Soil Mechanics，2012，33(6)：1647-1652.(in Chinese))
[3]	黄达，金华辉，黄润秋. 拉剪应力状态下岩体裂隙扩展的断裂力学机制及物理模型试验[J]. 岩土力学，2011，32(4)：997-1002.(HUANG Da，JIN Huahui，HUANG Runqiu.Mechanism of fracture mechanics and physical model test of rocks crack expanding under tension-shear stress[J]. Rock and Soil Mechanics，2011，32(4)：997- 1002.(in Chinese))
[4]	张宁，李术才，李明田，等. 单轴压缩条件下锚杆对含三维表面裂隙试样的锚固效应试验研究[J]. 岩土力学，2011，32(11)：3288- 3294.(ZHANG Ning，LI Shucai，LI Mingtian，et al. Experimental study of reinforced effect of bolt in 3D surface fractured specimens under uniaxial compression[J]. Rock and Soil Mechanics，2011，32(11)：3288-3294.(in Chinese))
[5]	顾铁凤. 贯通裂隙控制岩体巷道稳定规律的数值模拟[J]. 采矿与安全工程学报，2007，24(4)：432-438.(GU Tiefeng. Numerical simulat ion of roadw ay stability laws in rock mass with connected fissures[J]. Journal ofMining andSafety Engineering，2007，24(4)：432-438.(in Chinese))
[6]	潘岳，李爱武，戚云松. 圆巷开挖围岩偏应力应变能生成的分析解与图解[J]. 岩土工程学报，2007，29(12)：1780-1786.(PAN Yue，LI Aiwu，QI Yunsong.Analysis and illustration on deviatoric stress strain energy generation of surrounding rock in circuar tunnel excavation[J].Chinese Journal of Geotechnical Engineering，2007，29(12)：1780-1786.(in Chinese))
[7]	代进，蒋金泉. 巷道围岩中的裂隙发展与弱结构体[J]. 采矿与安全工程学报，2006，23(3)：311-315.(DAI Jin，JIANG Jinquan. Fracture development and weak structure in surrounding rock of roadway[J]. Journal ofMining andSafety Engineering，2006，23(3)：311-315.(in Chinese))
[8]	李学华，梁顺，姚强岭，等. 泥岩顶板巷道围岩裂隙演化规律与冒顶机制分析[J]. 煤炭学报，2011，36(6)：903-908.(LI Xuehua，LING Shun，YAO Qiangling，et al.Analysis offissure-evolving law and roof-falling mechanism in roadway with mudstone roof[J]. Journal of China Coal Society，2011，36(6)：903-908.(in Chinese))
[9]	刘洪涛，马念杰，李季，等. 顶板浅部裂隙通道演化规律与分布特征[J]. 煤炭学报，2012，37(9)：1451-1455.(LIU Hongtao，MA Nianjie，LI Ji，et al.Evolution and distribution characteristics of roof shallow fissure channel[J]. Journal of China Coal Society，2012，37(9)：1451-1455.(in Chinese))
[10]	张农，许兴亮，李桂臣. 巷道围岩裂隙演化规律及渗流灾害控制[J]. 岩石力学与工程学报，2009，28(2)：330-335.(ZHANG Nong，XU Xingliang，LI Guichen.Fissure-evolving laws of surrounding rock mass of roadway and control of seepage disasters[J].Chinese Journal of Rock Mechanics and Engineering，2009，28(2)：330-335.(in Chinese))
[11]	谢和平，陈忠辉，王家臣. 放顶煤开采巷道裂隙的分形研究[J]. 煤炭学报，1998，23(3)：30-35.(XIE Heping，CHEN Zhonghui，WANG Jiachen. Fractal study on crack distribution in tunnels for sub-level caving mining[J]. Journal of China Coal Society，1998，23(3)：30-35.(in Chinese))
[12]	鲁岩，邹喜正，刘长友. 基于修正普氏拱的巷道锚杆支护技术[J]. 采矿与安全工程学报，2007，24(4)：461-464.(LU Yan，ZOU Xizheng，LIU Changyou. Roadway bolt supporting technique based on modified natural arch[J]. Journal ofMining andSafety Engineering，2007，24(4)：461-464.(in Chinese))
[13]	杨正全，金永成，苏仲杰. 压力平衡拱应力状态相似物理模拟研究[J]. 辽宁工程技术大学学报：自然科学版，2003，22(3)：337-339.(YANG Zhengquan，JIN Yongcheng，SU Zhongjie.Similar physical simulative study in state of pressure equilibrium and arch stress[J]. Journal of Liaoning Technical University：Natural Science，2003，22(3)：337-339.(in Chinese))
[14]	邵建国，张小平. 论上部岩石圈的偏应力值[J]. 地质论评，1991，(4)：289-299.(SHAO Jianguo，ZHANG Xiaoping. Magnitude of deviatoric stress in the upper lithosphere[J].Geological Review，1991，(4)：289-299.(in Chinese))
[15]	郜进海，康天合，靳钟铭，等. 巨厚薄层状顶板回采巷道围岩裂隙演化规律的相似模拟试验研究[J]. 岩石力学与工程学报，2004，23(19)：3292-3297.(GAO Jinhai，KANG Tianhe，JIN Zhongming，et al.Similar simulation study on crack development law of surrounding rocks of roadway with great-thick thin-bedded top roof[J].Chinese Journal of Rock Mechanics and Engineering，2004，23(19)：3 292-3297.(in Chinese))
[16]	王忠昶，栾茂田，杨庆，等. 裂隙岩体锚固止裂的数值模拟研究[J]. 岩石力学与工程学报，2007，26(增1)：3446-3451.(WANG Zhongchang，LUAN Maotian，YANG Qing，et al.Study on numerical simulation of reinforcement on crack prevention of jointed rock mass[J].Chinese Journal of Rock Mechanics and Engineering，2007，26(Supp.1)：3446-3451.(in Chinese))
[17]	翟英达. 多裂隙围岩中锚固结构形成的力学机制[J]. 煤炭学报，2011，36(9)：1435-1439.(ZHAI Yingda.Mechanical mechanism of bolted structure forming in strong fissured surrounding rock[J]. Journal of China Coal Society，2011，36(9)：1435-1439.(in Chinese))
[18]	严红，何富连，徐腾飞. 深井大断面煤巷双锚索桁架控制系统的研究与实践[J]. 岩石力学与工程学报，2012，31(11)：2248-2257.(YAN Hong，HE Fulian，XU Tengfei.Study of double-cable-truss controlling system for large section coal roadway of deep mine and its practice[J].Chinese Journal of Rock Mechanics and Engineering，2012，31(11)：2248-2257.(in Chinese))
[19]	侯朝炯，勾攀峰. 巷道锚杆支护围岩强度强化机制研究[J]. 岩石力学与工程学报，2000，19(3)：342-345.(HOU Chaojiong，GOU Panfeng. Mechanism study on strength enhancement for the rocks surrounding roadway supported by bolt[J].Chinese Journal of Rock Mechanics and Engineering，2000，19(3)：342-345.(in Chinese))
[20]	侯朝炯. 煤巷锚杆支护的关键理论与技术[J]. 矿山压力与顶板管理，2002，(1)：2-5.(HOU Chaojiong. Key theory and technique of coal entry bolt supporting[J].Ground Pressure and Strata Control，2002，(1)：2-5.(in Chinese))