常吉高速公路湘西段路堑边坡结构特征与防护措施
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摘要
常吉高速公路湘西段地形起伏大,地质条件复杂,路堑边坡数量众多,边坡稳定性问题突出。本文根据岩体产状与边坡坡面的关系研究,认为常吉高速湘西段路堑边坡主要包括顺向坡、正交坡与反向坡,其中顺向坡的变形破坏机制与它的物质组成、岩体结构合风化程度等有关。分析、总结了路堑边坡的变形破坏模式,提出并实施了针对不同边坡结构类型与变形破坏模式的边坡防护措施。
Many cut slopes were formed on western section of the Changde-Jishou Expressway in Hunan province,where the topographical and geological conditions are complex.Stability issues of the cut slopes are outstanding.Based on a detailed geological survey,this paper presents the structure classification of the cut slopes according to the relationship between rock mass occurrence and slope dip direction.The relationship between deformation and failure mechanism and its composition,rock structure and weathering extent is studied in detail.The paper further identifies the deformation and failure modes of the cut slopes.It suggests the safety measures corresponding to different slope types and failure modes.The suggestions were utilized and achieved excellent results.
Many cut slopes were formed on western section of the Changde-Jishou Expressway in Hunan province,where the topographical and geological conditions are complex.Stability issues of the cut slopes are outstanding.Based on a detailed geological survey,this paper presents the structure classification of the cut slopes according to the relationship between rock mass occurrence and slope dip direction.The relationship between deformation and failure mechanism and its composition,rock structure and weathering extent is studied in detail.The paper further identifies the deformation and failure modes of the cut slopes.It suggests the safety measures corresponding to different slope types and failure modes.The suggestions were utilized and achieved excellent results.
引文
[1]张倬元,王士天,王兰生.工程地质分析原理[M].北京:地质出版社,1981.Zhang Zhuoyuan,Wang Shitian,Wang Lansheng.Theory of engineering ge-ology analysis.Beijing:Geology press,1881.
[2]孙广忠等.中国典型滑坡[M].北京:科学出版社,1988.Sun Guangzhong,et al..Representative landslides in China.Beijing:Sci-ence press,1988.
[3]孙广忠.地质工程理论与实践[M].北京:地震出版社,1996.Sun Guangzhong.Theory and practice of geological engineering.Beijing:Seismic press,1996.
[4]吴宝和.地表水和地下水对岩质边坡稳定性影响及防渗措施[J].中国地质灾害与防治学报,2003,14(3):1401~141.Wu Baohe.Influence of surface and ground water on the rock slope stabilityand seeping prevention.The Chinese journal of geological hazard control,2003,14(3):140~141.
[5]詹松,汤连生,杨文甫.广东高速公路路堑边坡失稳原因与防治分析[J].工程地质学报,2006,14(2):184~189.Zhan Song,Tang Liansheng,Yang Wenfu.Causes and preventive measures ofcut slope failures on expressways in Guangdong province.Jouranl of Engi-neering Geology,2006,14(2):184~189.
[6]姜海波,苏生瑞,倪万魁,郭一民.陕北地区黄土节理对公路边坡稳定性的影响[J].工程地质学报,2006,14(3):360~364.Jiang Haibo,et al..Effects of loess joints on stability of highway slopes innorthern Shaanxi.Jouranl of EngineeringGeology,2006,14(3):360~364.
[2]孙广忠等.中国典型滑坡[M].北京:科学出版社,1988.Sun Guangzhong,et al..Representative landslides in China.Beijing:Sci-ence press,1988.
[3]孙广忠.地质工程理论与实践[M].北京:地震出版社,1996.Sun Guangzhong.Theory and practice of geological engineering.Beijing:Seismic press,1996.
[4]吴宝和.地表水和地下水对岩质边坡稳定性影响及防渗措施[J].中国地质灾害与防治学报,2003,14(3):1401~141.Wu Baohe.Influence of surface and ground water on the rock slope stabilityand seeping prevention.The Chinese journal of geological hazard control,2003,14(3):140~141.
[5]詹松,汤连生,杨文甫.广东高速公路路堑边坡失稳原因与防治分析[J].工程地质学报,2006,14(2):184~189.Zhan Song,Tang Liansheng,Yang Wenfu.Causes and preventive measures ofcut slope failures on expressways in Guangdong province.Jouranl of Engi-neering Geology,2006,14(2):184~189.
[6]姜海波,苏生瑞,倪万魁,郭一民.陕北地区黄土节理对公路边坡稳定性的影响[J].工程地质学报,2006,14(3):360~364.Jiang Haibo,et al..Effects of loess joints on stability of highway slopes innorthern Shaanxi.Jouranl of EngineeringGeology,2006,14(3):360~364.