|
|
|
| ANALYSIS OF CALCULATION METHOD OF VERTICAL PRESSURE IN LOOSE ROCK MASS AND RESEARCH ON DIVIDING LINE STANDARD FOR DEEP- AND SHALLOW-BURIED TUNNELS |
| QU Xing，LI Ning |
| (Institute of Geotechnical Engineering，Xi'an University of Technology，Xi'an，Shaanxi 710048，China) |
|
|
|
|
Abstract Calculation of the rock pressure is still primarily based on the loose media theory，but the existing criteria cannot clearly define which class of surrounding rocks is the loose rock mass，producing the negative values in the calculating results. Meanwhile，the division of deep- and shallow-buried tunnels as an important issue is not still a final conclusion. Taking the rectangular tunnel with arch crown as the analysis object，the comparative analysis is carries out，and the difference of several methods of shallow-buried tunnel lies in stress analysis method，application of shearing strength theory and method for transforming lateral pressure of wedge body into earth pillar pressure. The basic condition of tunnel shape which can make sure to not produce negative value is obtained by using the formulae of Terzaghi，Xie Jiaxiao and Bierbaumer. Considering the advantages and disadvantages of existing division methods of deep- and shallow-buried tunnels comprehensively，the dividing line standard of deep- and shallow-buried tunnels is proposed which is between M. M. Promojiyfakonov law and Bierbaumer law. Taking the hole span as criterion，the fitting formula of correction factor which can consider comprehensive impact of cavity is built，and the rock mass mechanical parameters are considered in process of formula establishment.
|
|
Received: 15 January 2010
|
|
|
|
| [1] 孙 钧，侯学渊. 地下结构[M]. 北京：科学出版社，1987.(SUN Jun，HOU Xueyuan. Underground structure[M]. Beijing：Science Press，1987.(in Chinese))
[2] 谷兆祺，彭守拙，李仲奎. 地下洞室工程[M]. 北京：清华大学出版社，1994：16–18.(GU Zhaoqi，PENG Shouzhuo，LI Zhongkui. Undergroud chamber[M]. Beijing：Tsinghua University Press，1994：16–18.(in Chinese))
[3] 王毅才. 隧道工程[M]. 北京：人民交通出版社，2007：68–89. (WANG Yicai. Tunnel engineering[M]. Beijing：China Communication Press，2007：68–89.(in Chinese))
[4] 徐志英. 岩石力学[M]. 北京：水利水力出版社，1986：124–131.(XU Zhiying. Rock mechanics[M]. Beijing：China Water Power Press，1986：124–131.(in Chinese))
[5] 中华人民共和国行业标准编写组. TB10003—2005铁路隧道设计规范[S]. 北京：中国铁道出版社，2005.(The Professional Standards Compilation Group of People?s Republic of China. TB10003—2005 Code for design of concrete structures[S]. Beijing：China Railway Publishing House，2005.(in Chinese))
[6] 中华人民共和国行业标准编写组. JTG D70—2004公路隧道设计规范[S]. 北京：人民交通出版社，2004.(The Professional Standards Compilation Group of People¢s Republic of China. JTG D70—2004 Code for design of road tunnel[S]. Beijing：China Communications Press，2004.(in Chinese))
[7] 中华人民共和国行业标准编写组. DL 5077—1997水工建筑物荷载设计规范[S]. 北京：中国电力出版社，1997.(The Professional Standards Compilation Group of People¢s Republic of China. DL 5077—1997 Specifications for load design of hydraulic structures[S]. Beijing：China Electric Power Press，1997.(in Chinese))
[8] 沈明容. 岩体力学[M]. 上海：同济大学出版社，1991：162–179.(SHEN Mingrong. Rock mass mechanics[M]. Shanghai：Tongji University Press，1991：162–179.(in Chinese))
[9] 凌贤长，蔡德所. 岩体力学[M]. 哈尔滨：哈尔滨工业大学出版社，2002：279–291.(LING Xianchang，CAI Desuo. Rock mass mechanics[M]. Harbin：Harbin Institute of Technology Press，2002：279–291.(in Chinese))
[10] 刘洪洲. 大跨度扁坦隧道施工的力学响应及施工方法的研究[博士学位论文][D]. 重庆：重庆大学，1999.(LIU Hongzhou. Investigation on constructional mechanical responses and construction methods for large span flat tunnel[Ph. D. Thesis][D]. Chongqing：Chongqing University，1999.(in Chinese))
[11] 朱永全，宋玉香. 隧道工程[M]. 北京：中国铁道出版社，2005：65–75.(ZHU Yongquan，SONG Yuxiang. Tunnel engineering[M]. Beijing：China Railway Publishing House，2005：65–75.(in Chinese))
[12] 赵占厂，谢永利. 土质隧道深浅埋界定方法研究[J]. 中国工程科学，2005，7(10)：84–86.(ZHAO Zhanchang，XIE Yongli. Research on demarcating method for deep tunnel and shallow tunnel in soil[J]. Engineering Science，2005，7(10)：84–86.(in Chinese))
[13] 范 文，刘 聪，俞茂宏. 基于统一强度理论的土压力公式[J]. 长安大学学报：自然科学版，2004，24(6)：43–46.(FAN Wen，LIU Cong，YU Maohong. Formula for earth pressure based on unified strength theory[J]. Journal of Chang?an University：Natural Science，2004，24(6)：43–46.(in Chinese))
[14] 徐则民，黄润秋，王士天. 隧道的埋深划分[J]. 中国地质灾害与防治学报，2000，11(4)：5–10.(XU Zemin，HUANG Runqiu，WANG Shitian. Tunnel classifying in light of depth(i.e thickness of overburden)[J]. The Chinese Journal of Geological Hazard and Control，2000，11(4)：5–10.(in Chinese))
[15] 毛 峰. 黄土隧道深浅埋分界方法研究[硕士学位论文][D]. 西安：西安理工大学，2007.(MAO Feng. The dividing line standard research of deep submersed tunnel and shallow submersed tunnel of loess tunnel[M. S. Thesis][D]. Xi?an：Xi?an University of Technology，2007.(in Chinese)) |
|
|
|
2011, Vol. 30 
