迭部县黑多2~#滑坡变形破坏机制研究
|
摘要
滑坡的变形破坏机制是认清滑坡变形发展过程的基础,也是制定滑坡治理工程方案的理论依据。本文通过对甘肃省迭部县黑多2#滑坡进行现场工程地质勘察,在对滑坡坡体结构进行分析的基础上,总结归纳了滑坡的稳定性影响因素,分析了滑坡的变形破坏机制,并通过FLAC数值模拟验证了该滑坡的变形破坏机制。结果表明:黑多2#滑坡为一牵引式堆积体滑坡,滑坡的变形破坏模式为蠕滑-拉裂型,其变形破坏不仅受到地形地貌、地层岩性、地质构造等内在因素的控制影响,而且还受到地震、降雨和人类工程活动等外动力因素的诱发影响,因此认为该滑坡的治理思路必须是在控制堆积体变形的基础上做好坡体的排水工作。
The mechanism of deformation and failure is the foundation of recognizing the deformation process of a landslide,and is also the theoretical basis of the landslide prevention.Based on the engineering geological investigation of 2# landslide of Heiduo landslide group in Diebu County,Gansu Province,this paper summarizes the geological structure of the slope and the stability factors of the landslide,analyzes the deformation mechanism,and verifies the deformation mechanism of the landslide via FLAC numerical simulation.The research results show that 2# landslide is a traction-accumulative landslide and its mode of deformation and failure belongs to creep slippery-tension type;the deformation damage is not only controlled by the internal factors,such as topography,geomorphology,rocks,geological structure and so on,but also influenced by external dynamic factors,such as rainfall,human activities and so on.At the end,the paper points out that,for the idea of landslide prevention,great attention should be paid to controlling the deformation of the accumulative body and the drainage work of the slope.
The mechanism of deformation and failure is the foundation of recognizing the deformation process of a landslide,and is also the theoretical basis of the landslide prevention.Based on the engineering geological investigation of 2# landslide of Heiduo landslide group in Diebu County,Gansu Province,this paper summarizes the geological structure of the slope and the stability factors of the landslide,analyzes the deformation mechanism,and verifies the deformation mechanism of the landslide via FLAC numerical simulation.The research results show that 2# landslide is a traction-accumulative landslide and its mode of deformation and failure belongs to creep slippery-tension type;the deformation damage is not only controlled by the internal factors,such as topography,geomorphology,rocks,geological structure and so on,but also influenced by external dynamic factors,such as rainfall,human activities and so on.At the end,the paper points out that,for the idea of landslide prevention,great attention should be paid to controlling the deformation of the accumulative body and the drainage work of the slope.
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,1994.
[2]黄润秋,赵建军,巨能攀,等.汤屯高速公路顺层岩质边坡变形机制分析及治理对策研究[J].岩石力学与工程学报,2007,26(2):239-246.
[3]陈祖煜.土质边坡稳定性分析——原理.方法.程序[M].北京:中国水利水电出版社,2003.
[4]穆启超,王万迁,蔡铁刚.四川地震灾区某滑坡稳定性分析及治理工程方案比选[J].安全与环境工程,2011,18(4):11-16.
[5]徐湘涛,汪家林,黄润秋.紫坪铺水利枢纽工程左岸坝前堆积体变形破坏机制研究[J].岩石力学与工程学报,2008,27(增1):2 642-2 650.
[6]贺可强,阳吉宝,王思敬.堆积层边坡位移矢量角的形成作用机制及其与稳定性演化关系的研究[J].岩石力学与工程学报,2002,21(2):185-192.
[7]黄波林.重庆市巫山县廖家坪高陡斜坡变形破坏机制及稳定性分析[D].成都:成都理工大学,硕士学位论文,2008.
[8]孙东晖,刘建磊.三峡库区土门子滑坡变形破坏机制分析[J].岩土工程技术,2008,22(5):267-270.
[9]刘春玲,祁生文,童立强,等.利用FLAC3D分析某边坡地震稳定性[J].岩石力学与工程学报,2004,23(16):2730-2733.
[10]桂蕾,殷坤龙,翟月.基于FLAC-3D模拟和强度折减法的滑坡稳定性计算[J].安全与环境工程,2011,18(6):9-14.
[2]黄润秋,赵建军,巨能攀,等.汤屯高速公路顺层岩质边坡变形机制分析及治理对策研究[J].岩石力学与工程学报,2007,26(2):239-246.
[3]陈祖煜.土质边坡稳定性分析——原理.方法.程序[M].北京:中国水利水电出版社,2003.
[4]穆启超,王万迁,蔡铁刚.四川地震灾区某滑坡稳定性分析及治理工程方案比选[J].安全与环境工程,2011,18(4):11-16.
[5]徐湘涛,汪家林,黄润秋.紫坪铺水利枢纽工程左岸坝前堆积体变形破坏机制研究[J].岩石力学与工程学报,2008,27(增1):2 642-2 650.
[6]贺可强,阳吉宝,王思敬.堆积层边坡位移矢量角的形成作用机制及其与稳定性演化关系的研究[J].岩石力学与工程学报,2002,21(2):185-192.
[7]黄波林.重庆市巫山县廖家坪高陡斜坡变形破坏机制及稳定性分析[D].成都:成都理工大学,硕士学位论文,2008.
[8]孙东晖,刘建磊.三峡库区土门子滑坡变形破坏机制分析[J].岩土工程技术,2008,22(5):267-270.
[9]刘春玲,祁生文,童立强,等.利用FLAC3D分析某边坡地震稳定性[J].岩石力学与工程学报,2004,23(16):2730-2733.
[10]桂蕾,殷坤龙,翟月.基于FLAC-3D模拟和强度折减法的滑坡稳定性计算[J].安全与环境工程,2011,18(6):9-14.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心