川藏铁路高寒大温差及高地温关键致灾问题与对策
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- 英文论文题名：Key Disaster Problems and Countermeasures for Alpine Large Temperature Difference and High Geothermal of Sichuan-Tibet Railway
- 论文作者：魏永幸 ; 陈国庆 ; 蒋良文 ; 王科
- 英文论文作者：Wei Yongxing ; Chen Guoqing ; Jiang Liangwen ; Wang Ke ; China Railway Eryuan Engineering Group Co.Ltd ; State Key Laboratory of Geohazard Prevention and Geoenvironment Protection ; Chengdu University of Technology
- 年：2016
- 作者机构：中铁二院工程集团有限责任公司;成都理工大学地质灾害防治与地质环境保护国家重点实验室;
- 论文关键词：高寒大温差 ; 高海拔 ; 致灾问题 ; 全寿命周期 ; 防治对策
- 英文论文关键词：alpine large temperature difference ; high elevation ; disaster problem ; whole life cycle ; countermeasures
- 会议召开时间：2016-10-14
- 会议录名称：“川藏铁路建设的挑战与对策”2016学术交流会论文集
- 语种：中文
- 分类号：U212.22
- 学会代码：ZGTD
- 会议名称：“川藏铁路建设的挑战与对策”2016学术交流会
- 会议地点：中国四川成都
- 主办单位：中国铁道学会、中国铁道学会工程分会、中国中铁股份有限公司、中铁二院工程集团有限责任公司
- 学会名称：中国铁道学会
- 页数：6
- 文件大小：743k
- 原文格式：O
- 会议级别：全国
摘要
具有山区高海拔特点的川藏铁路工程遇到地表高寒大温差和隧道高地温的困扰,高温高寒带来的大温差会使岩体产生温度应力和时效变形,造成铁路工程的周期性扩张与收缩,从而对高寒山区铁路的安全性带来不可忽视的影响。因此,本文提出"温度场"对川藏铁路全寿命周期的重要性,需要考虑高地温与隧道围岩衬砌结构响应、高寒温度周期变化下隧道洞口与路基结构响应、冻融边坡长期稳定性和川藏铁路工程全寿命设计周期等重大关键科学技术问题。迫切需要通过系统理论和技术研究,分析高寒地区铁路建设过程中隧道衬砌、路基(路堑)边坡、路基基床在温度场作用下的力学响应和破坏演化机制,建立相应的路基、边坡和隧道设计理论方法,为高寒山区铁路工程修建提供理论和技术支撑。
The Sichuan-Tibet Railway Engineeringwith the characteristics of high elevation mountainshas been suffering from alpine large temperature of surface and high geothermal of tunnel,the temperature stress and the aging deformation of the rock mass will be caused by large temperature difference between the high temperature and alpine,and will cause the periodic expansion and contraction of railway engineering,so that the safety of the railway which can not be ignored in the cold mountain area will be affected.Therefore,this paper proposed "the temperature field" the importance of whole life cycle of Sichuan-Tibet Railway.The responsive between high ground temperature and lining structure of tunnel surrounding rock,the response of tunnel portal and subgrade structure under the variation of high-cold temperature,long-term stability of freezing and thawing slope,the whole life cycle of the Sichuan-Tibet Railway Engineering Design,and other major key scientific and technical problems should be considered.Analysis of tunnel lining in the process of railway constructionin alpine areas,mechanical response and damage evolution mechanism of subgrade slope and subgrade in Temperature Field by system theory and technology research is urgently needed.The corresponding theoretical method of subgrade,slope and tunnel design should be established,and to provide theoretical and technical support for the construction of railway projects in the alpinearea.
The Sichuan-Tibet Railway Engineeringwith the characteristics of high elevation mountainshas been suffering from alpine large temperature of surface and high geothermal of tunnel,the temperature stress and the aging deformation of the rock mass will be caused by large temperature difference between the high temperature and alpine,and will cause the periodic expansion and contraction of railway engineering,so that the safety of the railway which can not be ignored in the cold mountain area will be affected.Therefore,this paper proposed "the temperature field" the importance of whole life cycle of Sichuan-Tibet Railway.The responsive between high ground temperature and lining structure of tunnel surrounding rock,the response of tunnel portal and subgrade structure under the variation of high-cold temperature,long-term stability of freezing and thawing slope,the whole life cycle of the Sichuan-Tibet Railway Engineering Design,and other major key scientific and technical problems should be considered.Analysis of tunnel lining in the process of railway constructionin alpine areas,mechanical response and damage evolution mechanism of subgrade slope and subgrade in Temperature Field by system theory and technology research is urgently needed.The corresponding theoretical method of subgrade,slope and tunnel design should be established,and to provide theoretical and technical support for the construction of railway projects in the alpinearea.
引文
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[2]陈国庆,李天斌,张岩,等.花岗岩隧道脆性破坏的温度效应研究[J].岩土力学,2013(12):3513-3519.Chen Guoqing,Li Tianbin,Zhang Yan,et al.Thermal effect of brittle failure for granite tunnel[J].Rock and Soil Mechanics,2013(12):3513-3519.
[3]朱颖,蒋良文,屈科,等.西南铁路地质灾害与勘察防治技术成就[J].中国工程科学,2008,10(4):29-37.Zhu Ying,Jiang Liangwen,Qu Ke,et al.Geological hazard in southwest railways and achievement of survey and control technique on geological hazard[J].Engineering Sciences,2008,10(4):29-37.
[4]宋章,张广泽,蒋良文,等.川藏铁路主要地质灾害特征及地质选线探析[J].铁道标准设计,2016(1):14-19.Song Zhang,Zhang Guangze,Jiang Liangwen,et al.Analysis of the Characteristics of Major Geological Disaster and Geological Alignment of Sichuan-Tibet Railway[J].Railway Standard Design,2016(1):14-19.
[5]魏永幸,薛新华.多年冻土区斜坡路堤稳定性的探索[J].铁道工程学报,2011(12):35-39.Wei Yongxing,Xue Xinhua.Exploration on the stabilization of embankment on slope in permafrost regions[J].Journal of Railway Engineering Society,2011(12):35-39.
[6]罗照新,梁波,李安洪.郑西客运专线地基沉降控制技术研究[J].路基工程,2007(3):105-107.Luo Zhaoxin,Liang Bo,Li An-hong.Study on the control technology of foundation settlement of Zheng-Xi'an Passenger Dedicated Line[J].Subgrade Engineering,2007(3):105-107.
[7]王栋,张广泽,蒋良文,等.川藏铁路成康段活动断裂工程效应及地质选线[J].铁道工程学报,2015(10):6-11.Wang Dong,Zhang Guangze,Jiang Liang-wen,et al.Engineering effect of active fault and geological alignment of chengdu to kangding in Sichuan-Tibet railway.Journal of Railway Engineering Society,2015(10):6-11.
[8]张广泽,蒋良文,宋章,等.横断山区川藏线山地灾害和地质选线原则研究[J].铁道工程学报,2016(2).Zhang Guangze,Jiang Liangwen,Song Zhang,et al.Research on the mountain disaster and geological alignment fundamental of Sichuan-Tibet railway running through N-S mountain area[J].Journal of Railway Engineering Society,2016(2).
[9]陈国庆,赵聪,刘辉,等.一种高地温隧道降温预裂爆破方法[P].中国专利:CN201510518876.X,2015-08-21.Chen Guoqing,Zhao Cong,Liu Hui,et al.A kind of cooling pre-splitting blasting method for high ground temperature tunnels[P].Chinese patent:CN201510518876.X,2015-08-21.
[10]陈国庆,郭帆,张国峰,等.一种高地温隧道隔热散热衬砌结构[P].中国专利:CN201510092058.8,2015-05-06.Chen Guoqing,Guo Fan,Zhang Guofeng,et al.A kind of heat insulation radiating lining structure for high ground temperature tunnels[P].Chinese patent:CN201510092058.8,2015-05-06.
[11]陈国庆,郭帆,赵聪,等.高温高寒LVDT测量装置及测量方法[P].中国专利:201510698029.6,2015-10-22.Chen Guoqing,Guo Fan,Zhao Cong,et al.LVDT measuring device and measuring method under high temperature and cold[P].Chinese patent:201510698029.6,2015-10-22.
[12]陈国庆,张岩,张国峰,等.内置式全长防腐锚杆[P].中国专利:CN201510162241.0,2015-07-08.Chen Guoqing,Zhang Yan,Zhang Guofeng,et al.Built-in span of total length anticorrosive bolt[P].Chinese patent:CN201510162241.0,2015-07-08.