甘肃舟曲江顶崖滑坡成因及稳定性分析
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摘要
通过区域地质调查、滑坡微地貌和变形破坏特征测量等手段,对甘肃舟曲江顶崖滑坡的特征和成因进行了系统研究。研究表明,该滑坡具有显著的分级分块滑动特性,降雨、滑坡区高陡的地形、河流冲刷及不良的岩土体工程地质性质是形成该滑坡的主要因素。对此采用多种极限平衡计算方法,并结合滑坡所处的地质环境评价该滑坡在天然、暴雨、地震以及暴雨和地震耦合作用下的稳定性,为该滑坡的下一步治理提供理论指导。
Through the methods of regional geological survey,landslide micro physiognomy and deformation damage characteristics measuring,the landslide characteristics and contributing factors at Jiangdingya in Zhouqu County of Gansu Province is systematically studied.Research shows that the landslide has remarkable grading block sliding characteristics,and the main factors of the landslide are the rainfall,the high and steep topography in the landslide zone,scouring river and bad engineering geological properties of rock-soil body.For this,many kinds of limit equilibrium calculation methods are used in connection with the geological and environment assessment of the landslide and stability of landslide under the action of the nature,the heavy rains and earthquakes as well as the coupled action of the earthquake and heavy rainstorm,and thus the theoretical guidance for next landslide control is provided.
Through the methods of regional geological survey,landslide micro physiognomy and deformation damage characteristics measuring,the landslide characteristics and contributing factors at Jiangdingya in Zhouqu County of Gansu Province is systematically studied.Research shows that the landslide has remarkable grading block sliding characteristics,and the main factors of the landslide are the rainfall,the high and steep topography in the landslide zone,scouring river and bad engineering geological properties of rock-soil body.For this,many kinds of limit equilibrium calculation methods are used in connection with the geological and environment assessment of the landslide and stability of landslide under the action of the nature,the heavy rains and earthquakes as well as the coupled action of the earthquake and heavy rainstorm,and thus the theoretical guidance for next landslide control is provided.
引文
[1]吴玮江,王念秦.甘肃滑坡灾害[M].兰州:兰州大学出版社,2006.
[2]杨海平,王金生.长江三峡工程库区千将坪滑坡地质特征及成因分析[J].工程地质学报,2009,17(2):233-239.
[3]唐永仪.新构造运动在陇南滑坡泥石流形成中的作用[J].兰州大学学报(自然科学版),1992,23(4):153-156.
[4]肖学沛,李天斌,张志龙.三峡水库区严家坡滑坡成因分析及稳定性评价[J].中国地质灾害与防治学报,2005,16(1):39-43.
[5]郑明新.论滑带土强度特征及强度参数的反算法[J].岩土力学,2003,24(4):528-532.
[2]杨海平,王金生.长江三峡工程库区千将坪滑坡地质特征及成因分析[J].工程地质学报,2009,17(2):233-239.
[3]唐永仪.新构造运动在陇南滑坡泥石流形成中的作用[J].兰州大学学报(自然科学版),1992,23(4):153-156.
[4]肖学沛,李天斌,张志龙.三峡水库区严家坡滑坡成因分析及稳定性评价[J].中国地质灾害与防治学报,2005,16(1):39-43.
[5]郑明新.论滑带土强度特征及强度参数的反算法[J].岩土力学,2003,24(4):528-532.
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