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矩形巷道围岩变形破坏机理及在王村矿的应用研究
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摘要
复杂条件下矩形巷道围岩破坏规律及其支护技术研究是煤矿建设和生产中的重要课题之一。开展矩形巷道围岩变形机理研究具有重要的理论意义和工程实用价值。本文以王村煤矿为工程背景,采用理论分析、数值模拟及现场试验相结合的方法开展研究工作研究等多种方法,对矩形巷道围岩的变形破坏机理进行深入研究,所得成果在13503工作面运输顺槽的支护试验中得到了成功应用。主要结论有:
     ⑴研究了矩形巷道围岩变形破坏的基本规律。结果表明,当高跨比一定时,随两帮侧压力的增大,矩形巷道角部应力持续增加。当角部岩体所受压应力超过其极限强度后产生压剪破坏而形成塑性区,在顶底板和两帮的中间部位首先发生拉裂破坏,表现为顶底板及两帮的位移量均逐渐增大;当侧压力一定时,随高跨比的增加,矩形巷道围岩应力最大值仍出现在顶底板与两帮的角部区域内,角部应力先增加后降低,并在高跨比为1时达到最小值。两帮稳定性随巷道高跨比的增加逐渐降低,而顶底板稳定性则随其高跨比的增加而迅速增加,表现为两帮位移量随巷道高跨比的增加而增加,而顶底板位移量却随巷道高跨比的增加而减小。
     ⑵分析了矩形巷道围岩变形破坏的力学机理。结果表明,单一岩层顶板的稳定性取决于弹性模量、泊松比及其厚跨比,而复合层状顶板的稳定性则与其综合弹性模量及泊松比密切相关,其变形破坏过程包括承载调整→刚度弱化→应力调整→顶板稳定或失稳四个阶段;将矩形巷道帮部的变形区域划分为破碎区、塑性区及弹性区,给出了巷帮极限平衡区内岩体荷载的分布规律,建立了巷帮塑性区宽度及其水平位移公式,推导了两帮挤压流动下巷道底板的最大破坏深度。
     ⑶研究了矩形巷道不同顶板的破坏范围及其形态。针对普氏平衡拱理论在工程实际运用中的不足,讨论了底板稳定和两帮楔形破坏时不同侧压力下单一岩层顶板及复合层状顶板的平衡拱形态及矢高。针对矩形巷道围岩破坏后围岩应力状态按椭圆巷道分布这一特点,以椭圆巷道的最大内接矩形巷道为条件,分析得到椭圆巷道与其最大内接矩形巷道具有相同的高跨比。基于椭圆巷道围岩应力与轴比的关系,建立了矩形巷道最佳高跨比与其侧压力系数的关系公式,为矩形巷道断面的合理设计提供了依据。
     ⑷开展了矩形巷道围岩变形破坏的现场实测研究。针对现有围岩松动圈理论在研究矩形巷道围岩变形破坏时的不足,运用深基点多点位移计和钻孔窥视相结合的方法,对王村煤矿主要矩形回采巷道围岩的变形破坏范围进行了现场监测。结果表明,当断面面积一定时,巷道顶板松动范围随高跨比的增加而减小,两帮松动范围则随高跨比的增加而增加。通过对大量实测数据的整理与分析,建立了考虑巷道埋深、岩性及跨度的围岩松动范围预测公式。
     ⑸以王村矿13503工作面运输顺槽为试验巷道,运用研究成果对巷道断面尺寸和原有支护方案及参数进行了优化。结果表明,基于矩形巷道围岩变形破坏机理来确定其围岩断面大小和支护参数是合理可行的。
The failure law and support technology research of rectangular roadway under complexconditions is an important issue of coal mine construction and production. To carry out arectangle surrounding rock deformation mechanism study has important theoreticalsignificance and practical engineering value In this paper,studys on the surrounding rockdeformation mechanism and control technology of the laneway on the background of WangCun coal mine by theoretical analysis, numerical simulation, site monitoring as well aslaboratory.The main conclusions are as follows:
     ⑴The basic law of the rectangle surrounding rock deformation and failure were studied.The results showed that when the span-height ratio is constant,with the lateral pressureincreasing,the stress continues to increase in rectangular laneways corner, corner rock causesshear failure, the crack or shear failure is occurred in the roof, composite-layered roof andboth sides and its displacement gradually increas. When the lateral pressure coefficient isconstant, with the span-heigh ratio increasing, the corner stress increases firstly and thendecreases.The displacement of both sides increases, while the displacement of the roof withcomposite-layered roof decreases.
     ⑵Analyzed the mechanical mechanism of the deformation and failure about thesurrounding rock in rectangular laneway was studied systematically. The results show that thestability of a single layer roof depends on elastic modulus, Poisson's ratio and thickness-spanratio, while the stability of the composite layer roof related with its consolidated elasticmodulus and Poisson's closely whose deformation and failure include four phases which is theadjustment of structural carrying capacity, the weakness of structural overall stiffness,the stress adjustment and the structural instability.The displacement of coal sides in rectangularlaneways inculdes the crush zone, plastic zone and the elastic zone.It provided thedistribution of load in coal sides' limit equilibrium region, was established about the coalplastic zone formula of the width and horizontal displacement and was derived about themaximum failure depth of the backplane when both sides is squeezed.
     (3)Studied the extent of failure and the form of failure in different sides pressure.As theplatts balance arch theory is inadequate in the practical engineering application,this paperstudys on the stablity of the backplane and the balance arch shape of the single layered roofand composite layered roof in different sides pressure.According to the features of rock stressstate by ellipse laneways distributing after rectangular laneways rock failure,it was derived onmaximal span-height ratio of elliptical maximum inscribed rectangle laneways.Based on therelationship of elliptic surrounding rock stress with the axial ratio,the paper establish theoptimal span-height ratio formula of rectangular laneways by elliptical maximum inscribedrectangle laneways which provides a basis for rectangular laneways' design.
     (4)The field test study on deformation and failure of surrounding rock of rectangulartunnels was launched. Aiming at the destruction of the deformation and failure of surroundingrock circle theory in the study of the existing rectangular roadway surrounding rock of deeppoint, the method of multi-point displacement meter and sight combination is used, the mainrectangular roadway surrounding rock deformation and failure scope of Wangcun mine fieldmonitoring. Through the collation and analysis of many data, established the buried depth,roof lithology and span and two for damage range of single and multiple factors predictingformula considers rectangular tunnel.
     (5)The transport of Wangcun mine13503working face crossheading roadway as test,using the above research results to the field of surrounding rock of the original supportscheme and parameters were optimized. The results show that, the mechanism of deformationand failure of surrounding rock of roadway surrounding rock based on rectangle to determinesection size and support parameters are reasonable and feasible.
引文
[1]何满朝,钱七虎.深部岩体力学基础.北京:科学出版社,2010
    [2]肖同强.深部构造应力作用下厚煤层巷道围岩稳定与支护研究[学位论文].北京:中国矿业大学(北京),2009
    [3]谢和平.深部开采基础理论与工程实践.北京:科学出版社,2006
    [4]姜耀东,赵毅鑫,刘文岗等.深部开采中巷道底鼓问题的研究.岩石力学与工程学报,2004,23(14):2396~2401
    [5]康红普.煤巷锚杆支护理论与成套技术.北京:煤炭工业出版社,2007
    [6]李占金.鹤煤五矿深部岩巷变形机理及支护对策研究[学位论文].北京:中国矿业大学(北京),2009
    [7]杨峰.高应力软岩巷道变形破坏特征及让压支护机理研究[学位论文].徐州:中国矿业大学,2009
    [8]于学馥,方正昌,刘怀恒,等.地下工程围岩稳定分析.北京:煤炭工业出版社,1983
    [9]刘夕才,林韵梅.软岩巷道弹塑性变形的理论分析.岩土力学,1994,(2):27~35
    [10]刘夕才,林韵梅.软岩扩容性对巷道围岩特性曲线的影响.煤炭学报,1994,(6):596~600
    [11]范文,俞茂宏,孙萍等.硐室形变围岩压力弹塑性分析的统一解.长安大学学报(自然科学版),2003,23(3):1~4
    [12]王永岩.软岩巷道变形与压力分析支护及预测[学位论文].阜新:辽宁工程技术大学,2001
    [13]刘泉维.地下气库洞室围岩稳定数值分析研究[学位论文].青岛:中国海洋大学,2007
    [14]郑晓慧.软岩洞室喷锚支护合理时机研究[学位论文].西安:西安理工大学,2006
    [15]郑雨天.关于软岩巷道地压与支护的基本观点.软岩巷道掘进与支护论文集,1985.5
    [16]代进.综放回采巷道围岩裂纹扩展与类板结构及其非均称控制[学位论文].泰安:山东科技大学,2007
    [17]陈宗基,康文法.岩石的封闭应力、蠕变和扩容及本构方程.岩石力学与工程学报,1991,10(4):199~212
    [18]范广勤.岩土工程流变力学.北京:煤炭工业出版社,1993
    [19]刘夕才.软岩巷道的粘弹性流变分析.矿山压力与顶板管理,1997,(4):29~31
    [20]万志军,周楚良,罗兵全,等.软岩巷道围岩非线性流变数学力学模型.中国矿业大学学报,2004,33(4):468~472
    [21]杨圣奇.岩石流变力学特性研究及其工程应用[学位论文].南京:河海大学,2005
    [22]潘岳,王志强,王在泉.非线性硬化与软化的巷道围岩应力分布与工况研究.岩石力学与工程学报,2006,25(7):1341~1351
    [23]范文,俞茂宏,陈立伟等.考虑剪胀及软化的洞室围岩弹塑性分析的统一解.岩石力学与工程学报,2004,23(19):3213~3220
    [24]王祥秋,杨林德,高文华.软弱围岩蠕变损伤机理及合理支护时机的反演分析.岩石力学与工程学报,2004,23(5):793~79
    [25]陈卫忠,李术才,邱祥波.断裂损伤藕合模型在围岩稳定性分析中的应用.岩土力学,2002,23(2):288~291
    [26]Ronaldo I, Borja FE.Modeling of strain localization in soft rock.Journal of geotechnicaland geoenvironmental engineering,2000,15(4):335~343
    [27]董方庭.巷道围岩破坏圈支护理论.锚杆支护,1997(1)
    [28]董方庭.巷道围岩破坏圈支护理论及其应用技术.北京:煤炭工业出版社,2000
    [29]李占金.鹤煤五矿深部岩巷变形机理及控制技术研究[学位论文].北京:中国矿业大学(北京),2009
    [30]何满朝,吕晓俭,景海河.深部工程围岩特性及非线性动态力学设计理念.岩石力学与工程学报,2002,21(8):1215~1224
    [31]何满朝.岩土工程设计的新阶段一非线性大变形力学设计.岩土工程界,1998,(9):26~29
    [32]ADAMS G R,JAGER A J. Petroscopic observations of rock fracturing ahead of stopefaces in deep level gold mine.Joural of the South African Institute of Mining andMetallurgy,1980,80(6):204~209
    [33]钱七虎.非线性岩石力学的新进展一深部岩石力学的若干关键问题.第八次全国岩石力学与工程学术大会.北京:科学出版社,2004:10~17
    [34]李英杰,潘一山,李忠华等.岩体产生分区破裂化现象机制分析.岩土工程学报,2006,28(9):1124~1128
    [35]冯长根.深部岩石工程围岩分区破裂化效应.北京:中国科学技术出版社,2008
    [36]杨建辉,杨万斌,郭延华.煤巷层状顶板压曲破坏现象分析.煤炭学报,2001,26(3):240~244
    [37]黄达,康天合,段康廉.水平应力对巷道软弱互层顶板岩体破坏的数值模拟研究.太原理工大学学报,2004,35(3):299~302
    [38]贾蓬,唐春安,王述红.巷道层状岩层顶板破坏机理.煤炭学报,2006,31(1):11~15
    [39]侯朝炯,马念杰.煤层巷道两帮煤体应力和极限平衡区的探讨.煤炭学报,1989,(4):21~29
    [40]Wang C,Wang Y,Lu S. Deformational behavior of roadways in soft rocks in undergroundcoalmines and principles for stability control. International Journal of Rock Mechanicsand Mining Sciences,2000,37:937~946
    [41]郑桂荣,杨万斌.煤巷煤体破裂区厚度的一种计算方法.煤炭学报,2003,28(1):37~40
    [42]宫守才.煤帮塑性区弹塑性位移解.西部矿山建设工程理论与实践论文集.徐州:中国矿业大学出版社,2009
    [43]姜耀东,陆士良.巷道底臌机理的研究.煤炭学报,1994,19(4):343~351
    [44]谢卫红,陆士良,张玉祥.挠曲褶皱性巷道底臌机理分析及防治对策研究.岩石力学与工程学报,2001,20(1):57~60
    [45]王卫军,侯朝炯.回采巷道底臌力学原理及支护研究新进展.湘潭矿业学院学报,2003,18(1):1~6
    [46]Feng Tao. Study on mechanism of reinforcing sides to control floor heave of extractionopening. Journal of Coal Science&Engineering (China),2005,11(1):5
    [47]李树清,王卫军,潘长良等.加固底板对深部软岩巷道两帮稳定性影响的数值分析.煤炭学报,2007,32(2):123~126
    [48]王卫军,冯涛.加固两帮支护深井巷道底鼓的机理研究.岩石力学与工程学报,2005,24(5):808~811
    [49]李学华,王卫军,侯朝炯.加固顶板支护巷道底臌的数值分析.中国矿业大学学报,2003,32(4):436~439
    [50]朱维申,何满朝.复杂条件下围岩稳定性与岩体动态施工力学.北京:科学出版社,1996
    [51]朱维申.施工过程力学原理的若干发展和工程实例分析.岩石力学与工程学报,2003,22(10):1586~1591
    [52]孙晓明.煤矿软岩巷道祸合支护理论研究及其设计系统开发[学位论文].北京:中国矿业大学(北京),2002
    [53]何满朝,陈新,梁国平等.深部软岩工程大变形力学分析设计系统.岩石力学与工程学报,2007,26(5):934~943
    [54]王其胜.深部软岩巷道矿压特征与支护技术研究[学位论文].长沙:中南大学,2008
    [55]S.S.彭.软岩对巷道围岩应力分布影响及锚杆支护支护.中国煤炭,1996,(1):72~74
    [56][美]J.C.施坦库斯等.锚杆支护新进展.中国煤炭,1997,2:44~47
    [57]JC.施坦库斯.锚杆支护新进展.中国煤炭,1997,6(2):23~27
    [58]陈玉祥,王霞,刘少伟.锚杆支护理论现状及发展趋势探讨.西部探矿工程,2004,11(10):155~157
    [59]A.哈依斯.岩层支护技术的发展现状.国外锚杆支护技术译文集,煤炭科学研究总院北京开采所,1997
    [60]李常文,周景林.组合拱理论在软岩巷道锚喷设计中应用.辽宁工程技术大学学报(自然科学版),2004,13(5):32~36
    [61]程良奎.岩土锚固的现状与发展.土木工程学报,2001,34(3):7~12
    [62]李世平,吴振业,贺永年,等.岩石力学简明教程.北京:煤炭工业出版社,1996
    [63]希罗科夫.锚杆支护手册.北京:煤炭工业出版社,1992
    [64]候朝炯,勾攀峰.巷道锚杆支护围岩强度强化机理研究.岩石力学与工程学报,2000,19(3):342~345
    [65]张乐文,汪稔.岩土锚固理论研究之现状.岩土力学,2002,23(5):627~631
    [66]Kilic A,Yasar E,Celik A G.Effect of grout properties on the pull-out load capacity offully grouted rock bolt.Tunnelling and Underground Space Technology,2002,17:355~362.
    [67]Kilic A,Yasar E,Atis C D.Effect of bar shape on the pull-out capacity of fully-groutedrock bolts[J].Tunnelling and Underground Space Technology,2003,18:1~6
    [68]尤春安.全长粘结式锚杆的受力分析.岩石力学与工程学报,2000,19(3):339~341
    [69]Lutz L,Gergeley P.Mechanics of band and slip of deformed bars in concrete.Journal ofAmerican Concrete Institute.1967,64(11):711~721
    [70]Hansor,N.W.Influence of surface roughness of prestressing strand on bandperformance.Journal of Prestressed Concrete Institute,1969,14(1):32~45
    [71]Goto,Y.Cracks formed in concrete around deformed tension bars,Journal of AmericanConcrete Institute,1971,68(4):244~251
    [72]Fuller,P G,Cox R H T.Mechanics load transfer from steel tendons of cement basedgrouted,Fifth Australasian Conference on the Mechanics of structures andMaterials.Melbourne:Published by Australasian Institute of Mining andMetallurgy,1995
    [73]邹志晖,汪志林.锚杆在不同岩体中的工作机理.岩土工程学报,1993,16(5):71~78
    [74]葛修润,刘建武.加锚节理面抗剪性能研究.岩土工程学报,1988,10(1):8~19
    [75]孙建生,永井哲夫,樱井春辅.一个新的节理岩体力学分析模型及其应用.岩石力学与工程学报,1994,13(3):193~204
    [76]张玉军.锚固岩体流变特性的模型试验及理论研究[学位论文].上海:同济大学,1992
    [77]李术才.加锚断续节理岩体断裂损伤模型及其应用[学位论文].中国科学院武汉岩土力学研究所,1996
    [78]杨延毅,王慎跃.加锚节理岩体的损伤增韧止裂模型研究.岩土工程学报,1995,17(1):9~16
    [79]庞建勇.网壳锚喷支护结构试验研究.回采压力与顶板管理,1998,(2):52~54
    [80]邓坤.高应力软岩巷道围岩稳定性分析[学位论文].西安科技大学,2008
    [81]赵凯,刘长武,张国良.用弹性力学的复变函数法求解矩形硐室周边应力.采矿与安全工程学报,2007,24(3):361~365
    [82]闻国椿.共形映射与边值问题.北京:高等教育出版社,1985
    [83]谷拴成.层状顶板岩层中巷道稳定性研究.建井技术,1991,(4):17~19
    [84]林崇德.层状岩石顶板破坏机理数值模拟过程分析.岩石力学与工程学报,1999,18(4):392~396
    [85]鲜学福,谭学术.层状岩体破坏机理.重庆:重庆大学出版社,1989
    [86]谷拴成,樊琦,王建文,等.层状岩体巷道顶板冒落拱高度计算方法研究.煤炭工程,2012,(12):73~75
    [87]袁文伯,陈进.软化岩层中行的塑性区与破碎区分析.煤炭学报,1986,(3):77~85
    [88]侯朝炯,马念杰.煤层巷道两帮煤体应力和极限平衡区的探讨.煤炭学报,1989,(4):21~29
    [89]马念杰.软化岩体中巷道围岩塑性区分析.阜新矿业学院学报(自然科学版),1995,14(4):18~21
    [90]郑桂荣,杨万斌.煤巷煤体破裂区厚度的一种计算方法.煤炭学报,2003,28(1):37~40
    [91]李树清,潘长良,王卫军.锚注联合支护煤巷两帮塑性区分析.湖南科技大学学报(自然科学版),2007,22(2):5~8
    [92]许国安,靖洪文,丁书学,等.沿空双巷窄煤柱应力与位移演化规律研究.采矿与安全工程学报,2010,27(2):160~165
    [93]谢广祥,杨科,刘全明.综放面倾向煤柱支承压力分布规律研究.岩石力学与工程学报,2006,25(3):545~549
    [94]黄炳香,刘长友,郑百生,等.超长孤岛综放工作面煤柱支承压力分布特征研究.岩土工程学报,2007,29(6):932~937
    [95]徐思朋,茅献彪,张东升.煤柱塑性区的弹粘塑性理论分析.辽宁工程技术大学学报,2006,25(2):194–196.
    [96]JA YAN THU S, SINGH T N, SIN GH D P. Stress distribution during extraction ofpillars in a thick coal seam[J].Rock Mechanics and Rock Engineering,2003(11):12~22
    [97]宫守才.煤帮塑性区弹塑性位移解.西部矿山建设工程理论与实践论文集.徐州:中国矿业大学出版社,2009,264~268
    [98] QU Qundi. Study on distressing technology for a roadway driven along goaf in a fullymechanized top coal caving face. Journal of Coal Science&Engineering,2003,9(1):33~37
    [99]李树清,王卫军,潘长良,等.水平煤层巷道煤帮稳定性分析.湖南科技大学学报(自然科学版),2008,23(2):1~4
    [100]马念杰,侯朝炯.采准巷道矿压理论及应用.北京:煤炭工业出版社,1995
    [101]张季如,唐保付.锚杆荷载传递机理分析的双曲函数模型.岩土工程学报,2002,24(2):188~192
    [102]杨小礼,刘宝琛.根据非线性屈服准则计算隧道粘弹塑性位移.有色金属,2001,53(3):52~55
    [103]张金才,王永奉.岩体渗流与煤层底板突水.北京:地质出版社,1997
    [104]赵彭年.考虑水平方向原始应力时巷道顶板上自然平衡拱的形态.中国矿业大学学报,1978,(0):51~58
    [105]于学馥,乔端.轴变论和围岩稳定轴比三规律.有色金属,1981,33(3):8~15
    [106]王慧,张志刚.隧道信息化设计与施工技术监测系统研究.岩土工程界,2004,7(1):75~80
    [107]陈铁军.巷道围岩松动圈支护理论在羊场湾煤矿的应用研究[学位论文].西安科技大学,2005
    [108]项向荣.爆破震动作用下深井巷道围岩破坏特征研究[学位论文].安徽理工大学,2008

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