西藏拉萨地区冻融作用对溜砂坡天然休止角的影响
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摘要
在考虑拉萨地区周边主要道路沿线广泛分布的冻融现象基础上,探究了溜砂坡在有无冻融作用下,粒径不同和颗粒混杂程度均匀,且伴随着含水率增大的情况,冻融作用对于砂坡天然休止角的影响。试验结果数据与对比分析表明:粒径相对较小的砂坡对冻融作用的抵抗能力较强,颗粒混杂程度均匀(级配好)的砂坡也对冻融作用具有较强的抵抗能力;同时冻融会增加斜坡失稳的不确定因素。
By considering freezing and thawing surrounding the widely distributed along the main road in the Lhasa area,in the case of different particle size and uniform degree mixed of particle and along with the increasing moisture content,freezing and thawing was studied for the impact of natural sand slope angle of repose of sand-sliding slope. The test results and comparative analysis show that the sand slope with smaller particle size and uniform particle mixing degree have stronger resistance to freezing and thawing. The uncertainty of slope instability is increased by the freezing and thawing conditions.
By considering freezing and thawing surrounding the widely distributed along the main road in the Lhasa area,in the case of different particle size and uniform degree mixed of particle and along with the increasing moisture content,freezing and thawing was studied for the impact of natural sand slope angle of repose of sand-sliding slope. The test results and comparative analysis show that the sand slope with smaller particle size and uniform particle mixing degree have stronger resistance to freezing and thawing. The uncertainty of slope instability is increased by the freezing and thawing conditions.
引文
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[3]孙红月,尚岳全,吕庆.溜砂坡的成灾机理与防治对策[J].自然灾害学报,2006,15(4):28-30.SUN Hongyue,SHANG Yuequan,LYU Qin.Formativemechanism and control countermeasure of sand-sliding slope[J].Journal of Narual Diasters,2006,15(4):28-30.
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[8]齐信.四川松潘沟墩沟泥石流成因和动力学特征及其对铁路工程的影响评价[J].中国地质灾害与防治学报,2014,25(2):13-19.QI Xin.Study on quick and easy hazard evaluation method for highway slope collapse area[J].The Chinese Journal of Geological Hazard and Control,2014,25(2):13-19.
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[12]陈希哲.粗粒土的强度与咬合力的试验研究[J].工程力学,1994,11(4):56-63.CHEN Xizhe.Experimental rsearch abouts trength and occlusal force of coarse-grained soil[J].Engineering Mechanics,1994,11(4):56-63.
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[14]莫宣学,赵志丹,邓晋福.印度—亚洲大陆碰撞过程的火山作用响应[J].地学前缘,2003,10:135-148.MO Xuanxue,ZHAO Zhidan,DENG Jinfu.Response of volcanism tothe India-Asia collision[J].Earth Science Frontiers,2003,10(3):135-148.
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[16]魏丽娜.茂县洼底散粒体斜坡的成因机制及稳定性控制因素研究[D].成都:成都理工大学,2014.WEI Lina.Research on the formation mechanism and stability controlling factors of wadi Granular mixtures Slope in Mao Town[D].Chengdu:Chengdu University of Technology,2014.
[17]王成华,张小刚,阙云,等.粒状碎屑砂坡的形成和基本特征研究(溜砂坡系列研究之一)[J].岩土力学,2007,28(1):31-35.WANG Chenghua,ZHANG Xiaogang,Que Yun,et al.Formation and basic characteristics of sand-sliding slope composed of granular clasts:Part I of sandsliding slope series[J].Rock and Soil Mechanics,2007,28(1):31-35.
[18]铁永波,白永健,宋志.川西高原的岩土体的冻融破坏类型及其灾害效应[J].水土保持学报,2015,35(2):243-244.TIE Yongbo,BAI Yongjian,SONG Zhi.Damage types and hazards effects from freezing-thawing process in plateau of western Sichuan Province[J].Bulletin of Soil and Water Conservation,2015,35(2):243-244.
[19]吴纬江.季节性冻融作用与斜坡整体变形破坏[J].中国地质灾害与防治学报,1996,7(4):61-62.WU Weijiang.Seasonal freeze-thaw action and the entire deformation,failure of slope[J].The Chinese Journal of Geological Hazard and Control,1996,7(4):61-62.
[20]韩继国,王选仓,时成林,等.季节性冰冻地区公路边坡侵蚀破坏模式[J].长安大学学报(自然科学版),2008,28(1):42.HAN Jiguo,WANG Xuancang,SHI Chenglin,et al.Erosion collapse mode of highway slope in seasonal frost area[J].Journal of Chang’an University(Natural Science Edition),2008,28(1):42.
[21]牛富俊,张鲁新,俞祁浩,等.青藏高原多年冻土区斜坡类型及典型斜坡稳定性研究[J].冰川冻土,2002,24(5):609.NIU Fujun,ZHANG Luxin,YU Qihao,et al.Study on slope types and stability of typical slopes in permafrost regions of the Tibetan Plateau[J].Journal of Glaciology and Geocryology,2002,24(5):609.
[22]McRoberts E C.Slope stability in cold regions[A].Geotechni-cal Engineering for Cold Regions[C].New York:Ma Graw-Hill Book Company,1978:363-404.
[2]卜祥航,傅荣华,李川,等.溜砂坡防治措施之棚硐和挡砂墙工程研究[J].水利与建筑学报,2013,11(2):82-84.PU Xianghang,FU Ronghua,LI Chuan,et al.Research on shed tunnel and retaining wall engineering in prevetion measures of sand-sliding slope[J].Journal of Water Resources and Architectural Engineering,2013,11(2):82-84.
[3]孙红月,尚岳全,吕庆.溜砂坡的成灾机理与防治对策[J].自然灾害学报,2006,15(4):28-30.SUN Hongyue,SHANG Yuequan,LYU Qin.Formativemechanism and control countermeasure of sand-sliding slope[J].Journal of Narual Diasters,2006,15(4):28-30.
[4]魏丽娜,李川,傅荣华.散粒体斜坡稳定性相关因素试验研究[J].水利与建筑学报,2013,12(1):55-57.WEI Lina,LI Chuan,FU Ronghua.Experimental research on related factors for stability of granular mixture slope[J].Journal of Water Resources and Architectural Engineering,2013,12(1):55-57.
[5]陈希哲.土力学地基基础(第四版)[M].北京:清华大学出版社,2004.CHEN Xizhe.Ground foundation and soil mechanics(The Fourth Edition)[M].Beijing:Qinghua University Press,2004.
[6]徐海洋,夏克勤,张晓光.天山公路典型溜砂坡防治措施研究[J].地质灾害与坏境保护,2008,19(4):25-28.XU Haiyang,XIA Keqin,ZHANG Xiaoguang.Preventiong countermeasures of the typical sandsliding slope along along the tianshan highway[J].Journal of Geological Hazards and Environment Preservation,2008,19(4):25-28.
[7]高波,任光明,王军,等.四川汶川高家沟泥石流形成条件与启动机理[J].中国地质灾害与防治学报,2014,25(4):1-4.GAO Bo,REN Guangming,WANG Jun,et al.Study on formation conditions and initiation mechanism of Gaojia Gully’s debris flow Wenchuan County[J].The Chinese Journal of Geological Hazard and Control,2014,25(4):1-4.
[8]齐信.四川松潘沟墩沟泥石流成因和动力学特征及其对铁路工程的影响评价[J].中国地质灾害与防治学报,2014,25(2):13-19.QI Xin.Study on quick and easy hazard evaluation method for highway slope collapse area[J].The Chinese Journal of Geological Hazard and Control,2014,25(2):13-19.
[9]阙云,王成华,张小刚.川藏公路典型溜砂坡形成机理与整治[J].山地学报,2003,21(5):595-598.QU Yun,WANG Chenghua,ZHANG Xiaogang.Formative mechanism and control of typical sandsliding slope along sichuan-Tibet highway[J].Journal of Mountain Science,2003,21(5):595-598.
[10]蒋良潍,姚令侃,蒋忠信,等.溜砂坡动力学特征实验及防治[J].山地学报,2004,22(1):97-101.JIANG Liangwei,YAO Lingkan,JIANG Zhongxin,et al.Experiments on sand-sliding slope and the countermeasure[J].Journal of Mountain Science,2004,22(1):97-101.
[11]常旭,吴国雄,郭迁.溜砂坡形成机理及防治措施研究[J].公路,2006,1(1):89-91.CHANG Xu,WU Guoxiong,GUO Qian.Study on formation mechanism and control measures of sandsliding slope[J].Highway,2006,1(1):89-91.
[12]陈希哲.粗粒土的强度与咬合力的试验研究[J].工程力学,1994,11(4):56-63.CHEN Xizhe.Experimental rsearch abouts trength and occlusal force of coarse-grained soil[J].Engineering Mechanics,1994,11(4):56-63.
[13]张建国,刘淑珍,杨志全.西藏冻融侵蚀分级评价[J].地理学报,2006,61(9):915-917.ZHANG Jianguo,LIU Shuzhen,YANG Zhiquan.Classification and assessment of freeze-thaw erosion in tibet[J].Acta Geographica Sinica,2006,61(9):915-917.
[14]莫宣学,赵志丹,邓晋福.印度—亚洲大陆碰撞过程的火山作用响应[J].地学前缘,2003,10:135-148.MO Xuanxue,ZHAO Zhidan,DENG Jinfu.Response of volcanism tothe India-Asia collision[J].Earth Science Frontiers,2003,10(3):135-148.
[15]潘懋,李铁峰.灾害地质学(第2版)[M].北京:北京大学出版社,2008.PAN Mao,LI Tiefeng.Disastrous Geologica(The Tsecond Edition)[M].Beijing:Peking University Press,2008.
[16]魏丽娜.茂县洼底散粒体斜坡的成因机制及稳定性控制因素研究[D].成都:成都理工大学,2014.WEI Lina.Research on the formation mechanism and stability controlling factors of wadi Granular mixtures Slope in Mao Town[D].Chengdu:Chengdu University of Technology,2014.
[17]王成华,张小刚,阙云,等.粒状碎屑砂坡的形成和基本特征研究(溜砂坡系列研究之一)[J].岩土力学,2007,28(1):31-35.WANG Chenghua,ZHANG Xiaogang,Que Yun,et al.Formation and basic characteristics of sand-sliding slope composed of granular clasts:Part I of sandsliding slope series[J].Rock and Soil Mechanics,2007,28(1):31-35.
[18]铁永波,白永健,宋志.川西高原的岩土体的冻融破坏类型及其灾害效应[J].水土保持学报,2015,35(2):243-244.TIE Yongbo,BAI Yongjian,SONG Zhi.Damage types and hazards effects from freezing-thawing process in plateau of western Sichuan Province[J].Bulletin of Soil and Water Conservation,2015,35(2):243-244.
[19]吴纬江.季节性冻融作用与斜坡整体变形破坏[J].中国地质灾害与防治学报,1996,7(4):61-62.WU Weijiang.Seasonal freeze-thaw action and the entire deformation,failure of slope[J].The Chinese Journal of Geological Hazard and Control,1996,7(4):61-62.
[20]韩继国,王选仓,时成林,等.季节性冰冻地区公路边坡侵蚀破坏模式[J].长安大学学报(自然科学版),2008,28(1):42.HAN Jiguo,WANG Xuancang,SHI Chenglin,et al.Erosion collapse mode of highway slope in seasonal frost area[J].Journal of Chang’an University(Natural Science Edition),2008,28(1):42.
[21]牛富俊,张鲁新,俞祁浩,等.青藏高原多年冻土区斜坡类型及典型斜坡稳定性研究[J].冰川冻土,2002,24(5):609.NIU Fujun,ZHANG Luxin,YU Qihao,et al.Study on slope types and stability of typical slopes in permafrost regions of the Tibetan Plateau[J].Journal of Glaciology and Geocryology,2002,24(5):609.
[22]McRoberts E C.Slope stability in cold regions[A].Geotechni-cal Engineering for Cold Regions[C].New York:Ma Graw-Hill Book Company,1978:363-404.