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| Analysis and Prediction of Geothermal Test for Long Tunnel Group on Xiangtang-Putian Railway |
| YIN Shi-qing |
| China Railway Siyuan Survey and Design Group Co. Ltd, Wuhan, Hubei 430063, China |
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Abstract Abstract：Research purposes： High geothermal disaster was encountered during the construction of 4 deep-buried long tunnels of Daiyun Mountains tunnel group on Xiangtang-Putian Railway. A special method for original geothermal test in deep-buried long tunnel was proposed. And the accuracy of this method was verified through the comparison and analysis of the measured temperature of tunnel during construction with the ground temperature obtained by comprehensive logging prediction during the investigation.
Research conclusions：(1)Through drilling horizontal deep boreholes, installing temperature test probes, grouting the deep borehole, geothermal testing and long-term observation, the original geothermal data were obtained. (2)The predicted maximum geothermal value was smaller and the geothermal range was narrower than the site observed values. (3) The geothermal gradient prediction values of deep buried tunnel in Fujian were about 3~4 ℃/100 m for the stage of prefeasibility and feasibility study, while 1.5 ~ 2 ℃/100 m should be increased for the stage of preliminary design and construction drawing stage. (4) The research results can improve the accuracy of geothermal prediction during the investigation and can be referenced for railway, highway and other deep buried underground engineering projects in East China.
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China Railway Siyuan Survey and Design Group Co. Ltd. The Survey Technological Research on Long Tunnel on Xiangpu Railway［R］. Wuhan: China Railway Siyuan Survey and Design Group Co. Ltd, 2014.
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The First Survey and Design Institute，Ministry of Railways. Railway Engineering Geology Manual (Revised Edition)［M］．Beijing:China Railway Publishing House，1999．
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Chen Moxiang, Wang Jiyang, Deng Xiao. Progress in China′s Geothermal Research［J］. Earth Sciences-Journal of China University of Geosciences,1995（4）：367-372.
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Shu Lei, Lou Wenhu, Wang Lianjun. Analysis of Yangbajing Tunnel Geothermal［J］. Journal of Glaciology and Geocryology,2003（S1）:24-28．
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Xie Qiang,Chen Yongping. Qinling Tunnel Regional Characteristics of the Geothermal Field and Tunnel Rock Temperature Forecast［J］. Journal of Southwest Jiaotong University,2002（2）:177-179．
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China Railway Siyuan Survey and Design Group Co. Ltd. Engineering Geologic Investigation Report of Supplementary Survey of Daiyunshan Tunnel in Xiangpu Railway［R］. Wuhan: China Railway Siyuan Survey and Design Group Co. Ltd, 2008.
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China Railway Siyuan Survey and Design Group Co. Ltd. Engineering Geologic Investigation Report of Supplementary Survey of Gaogaishan Tunnel in Xiangpu Railway［R］. Wuhan: China Railway Siyuan Survey and Design Group Co. Ltd, 2008.
［8］中铁第四勘察设计院集团有限公司．向莆铁路补充定测青云山隧道工程地质勘察报告［R］．武汉：中铁第四勘察设计院集团有限公司，2008．
China Railway Siyuan Survey and Design Group Co. Ltd. Engineering Geologic Investigation Report of Supplementary Survey of Qingyunshan Tunnel in Xiangpu Railway［R］. Wuhan: China Railway Siyuan Survey and Design Group Co. Ltd, 2008.
［9］中铁第四勘察设计院集团有限公司．向莆铁路补充定测金瓜山隧道工程地质勘察报告［R］．武汉：中铁第四勘察设计院集团有限公司，2008．
China Railway Siyuan Survey and Design Group Co. Ltd. Engineering Geologic Investigation Report of Supplementary Survey of Jinguashan Tunnel in Xiangpu Railway［R］. Wuhan: China Railway Siyuan Survey and Design Group Co. Ltd, 2008. |
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