秦巴山区公路崩塌灾害成因与防治对策
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摘要
为进一步研究秦巴山区公路崩塌灾害的影响因素和形成原因,减轻灾害对山区公路交通的影响并提出相应防治对策,采用实地调查和理论分析的方法,对G108周至、佛坪和宁强段崩塌情况进行了研究。查明了区内主要环境条件;调查了20处崩塌灾害点,根据受力状态和灾害形态将崩塌分为滑塌、劈裂和碎落等3类,并对其中规模较大、成因复杂的3处灾害点进行了分析;从内在因素和外在因素两方面探讨了崩塌灾害的影响因素,从边坡坡度、坡面形态、岩体性质、降雨条件和人类工程活动等方面研究了崩塌灾害的形成原因;最后从加强监测、完善排水、边坡防护和工程治理等4个方面提出了灾害防治对策。研究结果可为陕南秦巴山区公路崩塌灾害防治提供一定的参考。
In order to study the impacting factors and causes of collapse disasters of highway in Qinba mountainous area,to mitigate disaster impact on highway traffic and to propose corresponding prevention and countermeasures,a field survey and a theoretical analysis method were used to research the collapses in G108 Zhouzhi,Foping and Ningqiang sections.The major environmental conditions of the area and 20 collapse points were identified,which were divided into slumping,splitting and recollected fragments according to the loading states.Three large scale disasters with complex genesis were analyzed;the impacting factors of the collapses were explored from the internal and extrinsic aspects;the causes of the collapses were investigated from the aspect of the angle of slope,slope morphology,rock mass property,rainfall conditions,human activities and other aspects.Disaster prevention and countermeasures,such as strengthening the monitoring,consummating drainage,slope protection,and engineering governance,etc.,were put forward.This study could provide certain reference for disaster prevention and control of highway collapses in southern Shaanxi Qinba mountainous area.
In order to study the impacting factors and causes of collapse disasters of highway in Qinba mountainous area,to mitigate disaster impact on highway traffic and to propose corresponding prevention and countermeasures,a field survey and a theoretical analysis method were used to research the collapses in G108 Zhouzhi,Foping and Ningqiang sections.The major environmental conditions of the area and 20 collapse points were identified,which were divided into slumping,splitting and recollected fragments according to the loading states.Three large scale disasters with complex genesis were analyzed;the impacting factors of the collapses were explored from the internal and extrinsic aspects;the causes of the collapses were investigated from the aspect of the angle of slope,slope morphology,rock mass property,rainfall conditions,human activities and other aspects.Disaster prevention and countermeasures,such as strengthening the monitoring,consummating drainage,slope protection,and engineering governance,etc.,were put forward.This study could provide certain reference for disaster prevention and control of highway collapses in southern Shaanxi Qinba mountainous area.
引文
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[2]张红梅.秦岭北坡公路地质灾害防治对策研究[D].西安:长安大学公路学院,2012.
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[9]李俊,彭振斌,曹佳文.某高速公路朱雀洞段红层滑坡成因机制分析与整治对策[J].中国地质灾害与防治学报,2009,20(2):15-19.
[10]陈邦影,周心经.广州市地质灾害发育分布与防治对策[J].西部矿产工程,2006,147(8):280-282.
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[12]齐洪亮,田伟平,李家春.干线公路灾害防治试点工程灾害特征及治理——以国道316线陕西境安康至汉中段为例[J].广西大学学报:自然科学版,2011,36(4):611-615.
[13]杨有辉,郑治.公路滑坡预测预报研究现状及前景展望[J],公路交通技术,2006,12(6):18-20.
[14]谈小龙.GIS支持下的大型高边坡安全监测预警模型研究[J],水利学报,2007,10(4):701-705.
[15]谢谟文,江崎哲郎,周国云,等.基于GIS空间数据库的三维边坡稳定性分析[J],岩石力学与工程学报,2002,21(10):1494-1499.
[2]张红梅.秦岭北坡公路地质灾害防治对策研究[D].西安:长安大学公路学院,2012.
[3]韩敏.基于GIS的陕西省公路地震次生灾害危险度区划[D].西安:长安大学公路学院,2011.
[4]于德海,彭建兵.陕南公路软弱变质岩边坡变形破坏特征的研究[J].工程地质学报,2007,15(4):559-563.
[5]尹超,田伟平,李家春,等.关中环线阳郭段滑坡灾害调查与防治对策[J].广西大学学报:自然科学版,2012,37(5):863-869.
[6]WU Q,TAKAHASHI K,OKABAYASHI T,et al.Response characteristics of local vibrations in stay cables on an existingcable-stayed bridge[J].Journal of Sound and Vibration,2003,261(3):403-420.
[7]尹超,田伟平,李俊,等.黄土公路边坡冲刷破坏影响因素和防治对策[J].交通企业管理,2012,27(3):52-54.
[8]于德海,彭建兵.陕西秦巴山区公路斜坡灾害发育规律的研究[J].公路,2007,25(8):136-140.
[9]李俊,彭振斌,曹佳文.某高速公路朱雀洞段红层滑坡成因机制分析与整治对策[J].中国地质灾害与防治学报,2009,20(2):15-19.
[10]陈邦影,周心经.广州市地质灾害发育分布与防治对策[J].西部矿产工程,2006,147(8):280-282.
[11]GUTHRIE W S,SEBESTA S,SCULLION T.Design consideration for cement stabilization of aggregate base material[R].Texas:Texas Transportation Institution,2011.
[12]齐洪亮,田伟平,李家春.干线公路灾害防治试点工程灾害特征及治理——以国道316线陕西境安康至汉中段为例[J].广西大学学报:自然科学版,2011,36(4):611-615.
[13]杨有辉,郑治.公路滑坡预测预报研究现状及前景展望[J],公路交通技术,2006,12(6):18-20.
[14]谈小龙.GIS支持下的大型高边坡安全监测预警模型研究[J],水利学报,2007,10(4):701-705.
[15]谢谟文,江崎哲郎,周国云,等.基于GIS空间数据库的三维边坡稳定性分析[J],岩石力学与工程学报,2002,21(10):1494-1499.
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