陕西凤凰山滑坡体稳定性评价及敏感性分析
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摘要
2008年,四川汶川地震触发陕西凤凰山滑坡体上多处出现裂缝,长达百余米,局部出现蠕变、滑塌等险情。根据其工程地质和水文地质状况,利用边坡稳态MSARMA分析方法对其稳定性以及影响稳定性的因子进行敏感性分析,发现排水率和地震烈度是影响边坡稳态的两个十分活跃的环境动力,是边坡变形破坏的诱发因素。然后采取了一些必要的排水及治理加固措施,改善该滑坡体的稳定性现状,并利用滑动力实时监测预警系统对其进行有效监测。自2008年对该滑坡体进行治理监测以来,该区稳定性一直很好,滑坡体上没有产生明显裂缝及位移现象,表明针对影响滑坡体稳定性的敏感性因素而进行的边坡加固治理方案,产生了明显的效果,具有一定的工程指导意义。
In 2008 year,because of Sichuan Wenchuan earthquake,at Fenghuang mountain slope diverse cracks for more than 100 meters appeared,and some regional creep deformation and slumping phenomenon happened.According to the engineering geology and hydrogeology condition of the Fenghuang mountain slope,the slope stability and its influence factors are analyzed by the MSARMA slope steady-state analysis method.It is found that the slope drainage rate and the earthquake intensity are two very active environmental dynamics and are slope deformation and failure's precipitating factor.At the same time,some necessary governance reinforcement measures are taken to improve the stability of the slope current situation,and the sliding force remote real-time monitor and warning system is also used effectively to monitor the slope stability.Since the landslide is governed and monitored in 2008,the stability has been very good,there are no obvious cracks and displacement phenomenon.It shows that the slope reinforcement treatment project aimed at the sensitivity influence factors of the stability of landslide,has significant effect,and has certain engineering significance.
In 2008 year,because of Sichuan Wenchuan earthquake,at Fenghuang mountain slope diverse cracks for more than 100 meters appeared,and some regional creep deformation and slumping phenomenon happened.According to the engineering geology and hydrogeology condition of the Fenghuang mountain slope,the slope stability and its influence factors are analyzed by the MSARMA slope steady-state analysis method.It is found that the slope drainage rate and the earthquake intensity are two very active environmental dynamics and are slope deformation and failure's precipitating factor.At the same time,some necessary governance reinforcement measures are taken to improve the stability of the slope current situation,and the sliding force remote real-time monitor and warning system is also used effectively to monitor the slope stability.Since the landslide is governed and monitored in 2008,the stability has been very good,there are no obvious cracks and displacement phenomenon.It shows that the slope reinforcement treatment project aimed at the sensitivity influence factors of the stability of landslide,has significant effect,and has certain engineering significance.
引文
[1]赵荣国,李卫平,刘一鸣.2008年世界地震灾害综述[J].国际地震动态,2009,(1):20-23.
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[4]武雄,姚爱军,衡朝阳,等.边坡稳定性评价MSARMA法及最佳加固力研究[J].中国地质灾害与防治学报,2004,2(15):104-107.
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[11]He Manchao,Tao Zhigang,Zhang Bin.Application of remote monitoring technology in landslides in the Luos-han mining area[J].Mining Science and Technology,2009,19(5):609-614.
[2]姚爱军,薛延河.复杂边坡稳定性评价方法与工程实践[M].科学出版社,2008.
[3]陶志刚,孙忠强,郭占飞.耦合多种成灾因素下的边坡稳定性分析[J].地下空间与工程学报,2011,7(3):593-603.
[4]武雄,姚爱军,衡朝阳,等.边坡稳定性评价MSARMA法及最佳加固力研究[J].中国地质灾害与防治学报,2004,2(15):104-107.
[5]吴佳佳.陕西宁强凤凰街滑坡体稳定性分析及其治理对策研究[D].北京:中国矿业大学.
[6]姚爱军.边坡工程稳定性耦合分析理论与方法研究[D].北京:中国矿业大学,1999.
[7]孙殿兴,陶志刚,范立军.南芬露天铁矿边坡稳定性评价及敏感性分析[J].金属矿山,2011,(5),57-60.
[8]赵明阶,何光春,王多垠.边坡工程处治技术[M].北京:人民交通出版社,2003.
[9]杨重存.喷锚加固岩土边坡的理论计算与分析[M].岩土锚固技术的新进展.北京:人民交通出版社,2000.
[10]何满潮.滑坡地质灾害远程监测预报系统及其工程应用[J].岩石力学与工程学报,2009,28(6):1 081-1 090.
[11]He Manchao,Tao Zhigang,Zhang Bin.Application of remote monitoring technology in landslides in the Luos-han mining area[J].Mining Science and Technology,2009,19(5):609-614.
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