川藏铁路八宿地区不同岩性岩石的冻融损伤特性研究
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- 英文论文题名：Study of the Degradation Characteristic of the Rock with Different Lithology along the Sichuan-Tibet Railway in Basu area
- 论文作者：赵平 ; 任勇 ; 冯涛 ; 巫锡勇
- 英文论文作者：Zhao Ping ; Ren Yong ; Feng Tao ; Wu Xiyong ; China Railway Eryuan Engineering Group Co.Ltd ; School of Geosciences and Environmental Engineering ; Southwest Jiaotong University
- 年：2016
- 作者机构：中铁二院工程集团有限责任公司;西南交通大学地球科学与环境工程学院;
- 论文关键词：岩性 ; 冻融循环 ; 岩石损伤
- 英文论文关键词：lithology ; freeze-thaw cycles ; rock damage
- 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：9
- 文件大小：1842k
- 原文格式：O
- 会议级别：全国
摘要
组成岩石的矿物类型、颗粒大小以及矿物结构,对于岩石在冻融循环下的损伤特性有着重要的影响。本文选取西藏地区川藏铁路沿线的白云母二长花岗岩、变质砂岩和板岩,进行了冻融循环实验,分析其在冻融循环作用下的质量、声波波速及单轴抗压强度的差异性变化,结合岩石薄片显微观察,探讨岩性对于岩石冻融损伤特性的影响。研究结果表明:①变质砂岩结构致密,矿物吸水性差,对于冻融循环作用的响应最不敏感;②白云母二长花岗岩矿物颗粒大,云母含量高,对于冻融循环作用的响应最为敏感;③板岩中的黏土矿物对于冻融损伤具有一定的缓冲和积累作用,在冻融循环后期,板岩力学性质下降明显。
The minerals and the texture of rocks have significant influence on the characteristic of the freeze-thaw damage to rock.In this paper,three types of rock(muscovite monzogranite,metasandstone and slate)in the Tibet Plateau along the SichuanTibet Railway were tested under the condition of freeze-thaw cycles.The discrepant variation value of the quality,wave velocity and uniaxial compressive strength of the rock was analyzed,and combining with the microscopic observation of the rock slice,the influence of the lithology to the freeze-thaw damage characteristic was discussed.Result shows:①metasandstone,which has a compact structure and is composed of poor hydroscopicity minerals,had the most insensitive response to the freeze-thaw cycling process;②muscovite monzogranite,with coarse mineral particles and high muscovite content,made the most sensitive response to the freeze-thaw cycling process;③the clay mineral in the slate has some buffer and cumulative action to the freezethaw damage,the mechanical property decreased distinctly at later stages.
The minerals and the texture of rocks have significant influence on the characteristic of the freeze-thaw damage to rock.In this paper,three types of rock(muscovite monzogranite,metasandstone and slate)in the Tibet Plateau along the SichuanTibet Railway were tested under the condition of freeze-thaw cycles.The discrepant variation value of the quality,wave velocity and uniaxial compressive strength of the rock was analyzed,and combining with the microscopic observation of the rock slice,the influence of the lithology to the freeze-thaw damage characteristic was discussed.Result shows:①metasandstone,which has a compact structure and is composed of poor hydroscopicity minerals,had the most insensitive response to the freeze-thaw cycling process;②muscovite monzogranite,with coarse mineral particles and high muscovite content,made the most sensitive response to the freeze-thaw cycling process;③the clay mineral in the slate has some buffer and cumulative action to the freezethaw damage,the mechanical property decreased distinctly at later stages.
引文
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[3]吴刚,何国梁,张磊,等.大理岩循环冻融实验研究[J].岩石力学与工程学报,2006,20(4):2931-2938.Wu Gang,He Guoliang,Zhang Lei,Qiu Yiping.Experimental Study on Cycles of Freeze-thaw of Marble[J].Chinese Journal of Rock Mechanics and Engineering,2006,20(4):2931-2938.(in Chinese)
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[6]刘华,牛富俊,徐志英,等.循环冻融条件下安山岩和花岗岩的物理力学特性试验研究[J].冰川冻土,2011,33(3):557-563.Liu Hua,Niu Fujun,Xu Zhiying,Lin Zhanju,Xu Jian.Acoustic Experimental Study of Two Types of Rock from the Tibetan Plateau under the Condition of Freeze-Thaw Cycles[J].Journal of Glaciology and Geocryoiogy,2011,33(3):557-563.(in Chinese)
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[2]徐光苗,刘泉声.岩石冻融破坏机制分析及冻融力学试验研究[J].岩石力学与工程学报,2005,24(17):3076-3082.Xu Guangmiao,Liu Quansheng.Analysis of mechanism of rock failure due to freezing-thawing cycling and mechanical testing study on frozen-thawed rocks[J].Chinese Journal of Rock Mechanics and Engineering,2005,24(17):3076-3082.(in Chinese)
[3]吴刚,何国梁,张磊,等.大理岩循环冻融实验研究[J].岩石力学与工程学报,2006,20(4):2931-2938.Wu Gang,He Guoliang,Zhang Lei,Qiu Yiping.Experimental Study on Cycles of Freeze-thaw of Marble[J].Chinese Journal of Rock Mechanics and Engineering,2006,20(4):2931-2938.(in Chinese)
[4]张慧梅,杨更社.冻融与荷载耦合作用下岩石损伤模型的研究[J].岩石力学与工程学报,2010,29(3):471-476.Zhang Huimei,Yang Gengshe.Research on Damage Model of Rock under Coupling Action of Freeze-thaw and Load[J].Chinese Journal of Rock Mechanics and Engineering,2010,29(3):471-476.(in Chinese)
[5]张慧梅,杨更社.冻融岩石损伤劣化及力学特性试验研究[J].煤炭学报,2013,38(10):1756-1762.Zhang Huimei,YANG Gengshe.Experimental Study of Damage Deterioration and Mechanical Properties for Freezingthawing Rock[J].Journal of China Coal Society,2013,38(10):1756-1762.(in Chinese)
[6]刘华,牛富俊,徐志英,等.循环冻融条件下安山岩和花岗岩的物理力学特性试验研究[J].冰川冻土,2011,33(3):557-563.Liu Hua,Niu Fujun,Xu Zhiying,Lin Zhanju,Xu Jian.Acoustic Experimental Study of Two Types of Rock from the Tibetan Plateau under the Condition of Freeze-Thaw Cycles[J].Journal of Glaciology and Geocryoiogy,2011,33(3):557-563.(in Chinese)
[7]王章琼.武当群片岩冻融损伤特性试验研究[D].北京:中国地质大学,2014.Wang Zhangqiong.Experimental Study on Degradation Characteristics of Frozen-Thawed of Wudang Group Schist[D].Beijing:China University of Geosciences,2014.(in Chinese)
[8]徐光苗,刘泉声,彭万巍,常小晓.低温作用下岩石基本力学性质试验研究[J].岩石力学与工程学报,2006,25(12):2502-2508.Xu Guangmiao,Liu Quansheng,Chang Wanwei,Chang Xiaoxiao.Experimental Study on Basic Mechanical Behaviors of Rocks under Low Temperatures[J].Chinese Journal of Rock Mechanics and Engineering,2006,25(12):2502-2508.(in Chinese)
[9]何国梁,张磊,吴刚.冻融循环条件下岩石物理特性的实验研究[J].岩土力学,2004,25(s2):52-56.HE Guoliang,ZHANG Lei,WU Gang.Test Study on Physical Characteristics of Rock under Freezing-thawing Cycles[J].Rock and soil Mechanics,2004,25(s2):52-56.(in Chinese)
[10]方云,乔梁,陈星,等.云冈石窟砂岩循环冻融实验研究[J].岩土力学,2014,35(9):2433-2442.Fang Yun,Qiao Liang,Chen Xing,Yan Shaojun,Zhai Guolin,LIANG Yawu.Experimental Study of Freezing-thawing Cycles on Sandstone in Yungang grottos[J].Rock and soil Mechanics,2014,35(9):2433-2442.(in Chinese)