CCS水电站地下厂房围岩分类方法研究
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摘要
以厄瓜多尔CCS水电站地下厂房为研究对象,在综合分析RMR法、Q系统法及水电HC法3种围岩分类的特点及适用范围的基础上,采用3种分类方法对CCS水电站地下厂房洞群围岩进行了分类,并对分类结果进行了对比分析,以RMR法、Q系统法和水电HC法分类结果为基础,采用专家经验对地下厂房围岩进行综合评判,得出各洞段的最终围岩等级。研究结果表明:3种方法分类结果相差较小,分类结果较为可靠;水电HC法以往在国内应用较多,同样适用于国外工程,值得进一步向国际工程推广应用。
The characteristics and application scopes of RMR method,Q system and HC method are analyzed. The surrounding rock of the underground powerhouse of CCS hydropower station in Ecuador is classified by RMR method,Q system and HC method respectively,and the classification results are compared. Expert experience is used to make comprehensive evaluation on the surrounding rock of the underground powerhouse,which has already been classified on basis of RMR method,Q system and HC method respectively,and the final classification of the surrounding rock of each section of the underground powerhouse is obtained. The study result shows that there is little difference among the classification results of these three methods and that HC method,which has been widely used in China,is applicable to projects in foreign countries and is worth to be further promoted to projects abroad.
The characteristics and application scopes of RMR method,Q system and HC method are analyzed. The surrounding rock of the underground powerhouse of CCS hydropower station in Ecuador is classified by RMR method,Q system and HC method respectively,and the classification results are compared. Expert experience is used to make comprehensive evaluation on the surrounding rock of the underground powerhouse,which has already been classified on basis of RMR method,Q system and HC method respectively,and the final classification of the surrounding rock of each section of the underground powerhouse is obtained. The study result shows that there is little difference among the classification results of these three methods and that HC method,which has been widely used in China,is applicable to projects in foreign countries and is worth to be further promoted to projects abroad.
引文
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[12]吴忠仕.按Q值进行围岩分级的工程实践[J].现代隧道技术,2001,38(4):44-47.(WU Zhongshi.Rock classification with Q value[J].Modern Tunnelling Technology,2001,38(4):44-47.(in Chinese))
[13]中华人民共和国国家标准编写组.GB 50487—2008水利水电工程地质勘察规范[S].北京:中国计划出版社,2009.
[2]葛华,王广德,石豫川,等.常用围岩分方法对某深埋隧洞的适用性分析[J].中国地质灾害与防治学报,2006,17(2):44-49.(GE Hua,WANG Guangde,SHI Yuchuan,et al.The applicability of the common surrounding rock mass classification methods in a deep buried tunnel[J].The Chinese Journal of Geological Hazard and Control,2006,17(2):44-49.(in Chinese))
[3]韩爱果,聂德新.某电站地下厂房围岩质量综合分级[J].地质灾害与环境保护,2002,13(2):75-79.(HAN Aiguo,NIE Dexin.Synthetical quality classification of the surrounding rock of the undergroud building in a hydropower[J].Journal of Geological Hazards and Environment Preservation,2002,13(2):75-79.(in Chinese))
[4]王广德,石豫川,刘汉超,等.水电地下洞室围岩分类[J].水力发电学报,2006,25(2):123-127.(WANG Guangde,SHI Yuchuan,LIU Hanchao,et al.The classification of rock mass around tunnel and underground chamber for water conservancy and hydroelectric engineering[J].Journal of Hydroelectric Engineering,2006,25(2):123-127.(in Chinese))
[5]郑以宝,田作印.蒲石河抽水蓄能电站地下厂房岩体结构特征及围岩分类[J].资源环境与工程,2009,23(5):670-673.(ZHENG Yibao,TIAN Zuoyin.The rock mass structures characteristics and wall rock classification of underground powerhouse of pushi river pumped storage power station[J].Resources Environment&Engineering,2009,23(5):670-673.(in Chinese))
[6]伍佑伦,许梦国.根据工程岩体分级选择岩体力学参数的探讨[J].武汉科技大学学报:自然科学版,2002,25(1):22-24.(WU Youlun,XU Mengguo.Discussion on mechanical parameters selection based on the quality classification results of rock mass[J].Journal of Wuhan University of Science&Technology:Natural Science Edition,2002,25(1):22-24.(in Chinese))
[7]于丽,王明年,房敦敏,等.岩质围岩施工阶段亚级分级的数量化理论研究[J].岩土力学,2009,30(12):3846-3850.(YU Li,WANG Mingnian,FANG Dunmin,et al.Study of quantification theory of rocky surrounding rock sub-classification during construction[J].Rock and Soil Mechanics,2009,30(12):3846-3850.(in Chinese))
[8]Bieniaski Z T.Classification of rock masses for engineering[M].New York:Wiley,1993.
[9]陈沅江,吴超,傅衣铭,等.基于修正RMR法的深部岩体工程围岩质量评价研究[J].防灾减灾学报,2007,27(2):141-146.(CHEN Yuanjiang,WU Chao,FU Yiming,et al.Study on evaluation of the surrounding rock quality in deep rockmass engineering based on the revised RMR method[J].Journal of Disaster Prevention and Mitigation Engineering,2007,27(2):141-146.(in Chinese))
[10]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):185-216.
[11]Barton N,Lien R,Lunde J.Engineering classification of rock masses for the design of tunnel support[J].Rock Mechanics,1974,6(4):189-236.
[12]吴忠仕.按Q值进行围岩分级的工程实践[J].现代隧道技术,2001,38(4):44-47.(WU Zhongshi.Rock classification with Q value[J].Modern Tunnelling Technology,2001,38(4):44-47.(in Chinese))
[13]中华人民共和国国家标准编写组.GB 50487—2008水利水电工程地质勘察规范[S].北京:中国计划出版社,2009.