CCS水电站引水隧洞双护盾TBM施工围岩分类研究
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摘要
为了对双护盾TBM隧洞施工中的围岩进行分类,以厄瓜多尔CCS水电站引水隧洞为例,参考RMR围岩分类方法,通过伸缩护盾的间隙和刀盘的空隙对洞壁和掌子面围岩进行观测,结合岩渣及掘进参数,获取岩石的质量指标RQD、节理间距和节理性状等信息。通过综合分析,选取岩石的回弹值、围岩的完整性、岩石的质量指标RQD、刀盘推力、刀盘扭矩、片状岩渣含量和地下水渗流量作为围岩分类的指标,然后对7个指标分别赋值,建立围岩的分类标准,并通过求和的方法进行综合围岩分类。分类结果表明:选取的7个指标可以克服双护盾TBM施工时无法对围岩进行全面地质素描的困难,可以满足TBM快速施工的需要,并且能较真实地反映围岩的情况,分类结果可靠。
The rock quality designation( RQD),joint space and joint characters of diversion tunnel of CCS Hydropower Station in Ecuador bored by double-shield TBM are obtained by rock mass rating( RMR),uniaxial compressive strength calculated by rebound test,observation of tunnel wall and working face through shield gaps and cutterhead gaps and rock slag and tunneling parameters. Seven indexes, i. e. rock rebounding value, surrounding rock integrity, RQD,cutterhead thrusting force,cutterhead torque,content of sheet rock slag,and seepage volume of groundwater,are selected and assigned by comprehensive analysis. The surrounding rock classification standards are established; and the classification of surrounding rocks is carried out by summation method. The classification results show that the selected seven indexes can overcome the difficulties of comprehensive geological sketching when using double-shield TBM,meet the rapid construction requirements and reflect the surrounding rock accurately. In other words,the classification results are reliable.
The rock quality designation( RQD),joint space and joint characters of diversion tunnel of CCS Hydropower Station in Ecuador bored by double-shield TBM are obtained by rock mass rating( RMR),uniaxial compressive strength calculated by rebound test,observation of tunnel wall and working face through shield gaps and cutterhead gaps and rock slag and tunneling parameters. Seven indexes, i. e. rock rebounding value, surrounding rock integrity, RQD,cutterhead thrusting force,cutterhead torque,content of sheet rock slag,and seepage volume of groundwater,are selected and assigned by comprehensive analysis. The surrounding rock classification standards are established; and the classification of surrounding rocks is carried out by summation method. The classification results show that the selected seven indexes can overcome the difficulties of comprehensive geological sketching when using double-shield TBM,meet the rapid construction requirements and reflect the surrounding rock accurately. In other words,the classification results are reliable.
引文
[1]张镜剑,傅冰骏.隧道掘进机在我国应用的进展[J].岩石力学与工程学报,2007,26(2):226-238.ZHANG Jingjian,FU Bingjun.Advances in tunnel boring machine application in China[J].Chinese Journal of Rock Mechanics and Engineering,2007,26(2):226-238.
[2]张镜剑.TBM的应用及其有关问题和展望[J].岩石力学与工程学报,1999,18(3):363-367.ZHANG Jingjian.The application and some problems of TBM and its prospects[J].Chinese Journal of Rock Mechanics and Engineering,1999,18(3):363-367.
[3]尹俊涛,尚彦军,傅冰骏,等.TBM掘进技术发展及有关工程地质问题分析和对策[J].工程地质学报,2005,13(3):389-397.YIN Juntao,SHANG Yanjun,FU Bingjun,et al.Development of TBM-excavation technology and analyses&countermeasures of related engineering geological problems[J].Journal of Engineering Geology,2005,13(3):389-397.
[4]茅承觉.我国全断面岩石掘进机(TBM)发展的回顾与思考[J].建设机械技术与管理,2008,21(5):81-84.MAO Chengjue.Review and thoughts of developmental full face rock tunnel boring machine(TBM)in China[J].Construction Machinery Technology&Management,2008,21(5):81-84.
[5]齐三红,杨继华,郭卫新,等.修正RMR法在地下洞围岩分类中的应用研究[J].地下空间与工程学报,2013,9(增刊2):1922-1925.QI Sanhong,YANG Jihua,GUO Weixin,et al.Application study of underground caverns surrounding rock classification based on the revised RMR method[J].Chinese Journal of Underground Space and Engineering,2013,9(S2):1922-1925.
[6]Barton N.Some new Q-value correlations to assist in site characterization and tunnel design[J].International Journal of Rock Mechanics&Mining Sciences,2002,39(2):185-216.
[7]工程岩体分级标准:GB 50218—2014[S].北京:中国计划出版社,2014.Standard for engineering classification of rock mass:GB50218—2014[S].Beijing:China Planning Press,2014.
[8]水利水电工程地质勘察规范:GB 50487—2008[S].北京:中国计划出版社,2009.Code for engineering geological investigation of water resources and hydropower:GB 50487—2008[S].Beijing:China Planning Press,2009.
[9]刘跃丽,郭峰,田满义.双护盾TBM开挖隧道围岩类型判别[J].同煤科技,2003(1):27-28.LIU Yueli,GUO Feng,TIAN Manyi.Analysis of surrounding rock for double-shield TBM excavating tunnel[J].Science and Technology of Datong Coal Mining Admingistration,2003(1):27-28.
[10]侯浩,张之钰.护盾式全断面岩石掘进机隧洞施工的围岩适宜性分类[J].资源环境与工程,2010,24(5):527-530.HOU Hao,ZHANG Zhiyu.Suitability classification of wall rock when tunnel construction by shielded full face rock TBM[J].Resources Environment&Engineering,2010,24(5):527-530.
[11]李苍松,谷婷,丁建芳,等.TBM施工隧洞围岩级别划分探讨[J].工程地质学报,2010,18(5):730-736.LI Cangsong,GU Ting,DING Jianfang,et al.Discussion on rock classification in TBM construction tunnel[J].Journal of Engineering Geology,2010,18(5):730-736.
[12]张宁,石豫川,童建刚.TBM施工深埋隧洞围岩分类方法初探[J].现代隧道技术,2010,47(5):11-14.ZHANG Ning,SHI Yuchuan,TONG Jiangang.Disscussion on rock classification of TBM excavated deep tunnel[J].Modern Tunnelling Technology,2010,47(5):11-14.
[13]吴煜宇,吴湘滨,尹俊涛.关于TBM施工隧洞围岩分类方法的研究[J].水文地质工程地质,2006,33(5):120-122.WU Yuyu,WU Xiangbin,YIN Juntao.Research with relation to rock classification of TBM tunnels[J].Hydrogeology and Engineering Geology,2006,33(5):120-122.
[14]黄祥志.基于渣料和TBM掘进参数的围岩稳定分类方法的研究[D].武汉:武汉大学,2005.HUANG Xiangzhi.Research on method of surrounding rock mass stability classification based on rock slag and TBM boring parameters[D].Wuhan:Wuhan University,2005.
[15]杨继华,齐三红,郭卫新,等.厄瓜多尔CCS水电站TBM法施工引水隧洞工程地质条件及问题初步研究[J].隧道建设,2014,34(6):513-518.YANG Jihua,QI Sanhong,GUO Weixin,et al.Case study of engineering geological conditions and problems in construction of headrace tunnel of CCS Hydropower Station in Ecuador by TBM method[J].Tunnel Construction,2014,34(6):513-518.
[16]杨继华,苗栋,杨风威,等.CCS水电站输水隧洞双护盾TBM穿越不良地质段的处理技术[J].资源环境与工程,2016,30(3):539-542.YANG Jihua,MIAO Dong,YANG Fengwei,et al.Treatment technology of crossing unfavorable geological tunnel section by double shield TBM at CCS Hydropower Station conveyance tunnel[J].Resources Environment&Engineering,2016,30(3):539-542.
[2]张镜剑.TBM的应用及其有关问题和展望[J].岩石力学与工程学报,1999,18(3):363-367.ZHANG Jingjian.The application and some problems of TBM and its prospects[J].Chinese Journal of Rock Mechanics and Engineering,1999,18(3):363-367.
[3]尹俊涛,尚彦军,傅冰骏,等.TBM掘进技术发展及有关工程地质问题分析和对策[J].工程地质学报,2005,13(3):389-397.YIN Juntao,SHANG Yanjun,FU Bingjun,et al.Development of TBM-excavation technology and analyses&countermeasures of related engineering geological problems[J].Journal of Engineering Geology,2005,13(3):389-397.
[4]茅承觉.我国全断面岩石掘进机(TBM)发展的回顾与思考[J].建设机械技术与管理,2008,21(5):81-84.MAO Chengjue.Review and thoughts of developmental full face rock tunnel boring machine(TBM)in China[J].Construction Machinery Technology&Management,2008,21(5):81-84.
[5]齐三红,杨继华,郭卫新,等.修正RMR法在地下洞围岩分类中的应用研究[J].地下空间与工程学报,2013,9(增刊2):1922-1925.QI Sanhong,YANG Jihua,GUO Weixin,et al.Application study of underground caverns surrounding rock classification based on the revised RMR method[J].Chinese Journal of Underground Space and Engineering,2013,9(S2):1922-1925.
[6]Barton N.Some new Q-value correlations to assist in site characterization and tunnel design[J].International Journal of Rock Mechanics&Mining Sciences,2002,39(2):185-216.
[7]工程岩体分级标准:GB 50218—2014[S].北京:中国计划出版社,2014.Standard for engineering classification of rock mass:GB50218—2014[S].Beijing:China Planning Press,2014.
[8]水利水电工程地质勘察规范:GB 50487—2008[S].北京:中国计划出版社,2009.Code for engineering geological investigation of water resources and hydropower:GB 50487—2008[S].Beijing:China Planning Press,2009.
[9]刘跃丽,郭峰,田满义.双护盾TBM开挖隧道围岩类型判别[J].同煤科技,2003(1):27-28.LIU Yueli,GUO Feng,TIAN Manyi.Analysis of surrounding rock for double-shield TBM excavating tunnel[J].Science and Technology of Datong Coal Mining Admingistration,2003(1):27-28.
[10]侯浩,张之钰.护盾式全断面岩石掘进机隧洞施工的围岩适宜性分类[J].资源环境与工程,2010,24(5):527-530.HOU Hao,ZHANG Zhiyu.Suitability classification of wall rock when tunnel construction by shielded full face rock TBM[J].Resources Environment&Engineering,2010,24(5):527-530.
[11]李苍松,谷婷,丁建芳,等.TBM施工隧洞围岩级别划分探讨[J].工程地质学报,2010,18(5):730-736.LI Cangsong,GU Ting,DING Jianfang,et al.Discussion on rock classification in TBM construction tunnel[J].Journal of Engineering Geology,2010,18(5):730-736.
[12]张宁,石豫川,童建刚.TBM施工深埋隧洞围岩分类方法初探[J].现代隧道技术,2010,47(5):11-14.ZHANG Ning,SHI Yuchuan,TONG Jiangang.Disscussion on rock classification of TBM excavated deep tunnel[J].Modern Tunnelling Technology,2010,47(5):11-14.
[13]吴煜宇,吴湘滨,尹俊涛.关于TBM施工隧洞围岩分类方法的研究[J].水文地质工程地质,2006,33(5):120-122.WU Yuyu,WU Xiangbin,YIN Juntao.Research with relation to rock classification of TBM tunnels[J].Hydrogeology and Engineering Geology,2006,33(5):120-122.
[14]黄祥志.基于渣料和TBM掘进参数的围岩稳定分类方法的研究[D].武汉:武汉大学,2005.HUANG Xiangzhi.Research on method of surrounding rock mass stability classification based on rock slag and TBM boring parameters[D].Wuhan:Wuhan University,2005.
[15]杨继华,齐三红,郭卫新,等.厄瓜多尔CCS水电站TBM法施工引水隧洞工程地质条件及问题初步研究[J].隧道建设,2014,34(6):513-518.YANG Jihua,QI Sanhong,GUO Weixin,et al.Case study of engineering geological conditions and problems in construction of headrace tunnel of CCS Hydropower Station in Ecuador by TBM method[J].Tunnel Construction,2014,34(6):513-518.
[16]杨继华,苗栋,杨风威,等.CCS水电站输水隧洞双护盾TBM穿越不良地质段的处理技术[J].资源环境与工程,2016,30(3):539-542.YANG Jihua,MIAO Dong,YANG Fengwei,et al.Treatment technology of crossing unfavorable geological tunnel section by double shield TBM at CCS Hydropower Station conveyance tunnel[J].Resources Environment&Engineering,2016,30(3):539-542.