南江县降雨诱发土质滑坡成因研究
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摘要
四川省南江县近年来由于降雨等因素,频频发生滑坡等地质灾害,给人民带来了巨大损失。降雨诱发土质滑坡有其自身的特点和发生机制。一般来说降雨诱发的土质滑坡沿基覆界面滑动,为浅表层滑坡。以南江县王正傍滑坡为土质滑坡典型研究对象,对其工程地质条件和变形破坏特征进行研究,论述了王正傍滑坡的成因机理,利用geo-studio数值模拟软件对其稳定性进行对比计算。研究成果可为滑坡的预警和治理提供参考。
Due to factors such as rainfall, landslides and other geological disasters occur frequently in Nanjiang County of Sichuan Province in recent years, huge losses happen to the people. Soil landslide induced by rainfall has its own characteristics and mechanism.Generally speaking, the soil landslide along the base of the rainfall induced landslide is sliding along the base cover interface. In this paper, Nanjiang County Wangzhengbang landslide as the typical research object of soil, the engineering geological conditions and deformation characteristics were studied, the paper discussed the formation mechanism of Wangzhengbang landslide, the simulation calculation software on its stability by using Geo-Studio numerical. The research results can provide reference for the early warning and control of landslide.
Due to factors such as rainfall, landslides and other geological disasters occur frequently in Nanjiang County of Sichuan Province in recent years, huge losses happen to the people. Soil landslide induced by rainfall has its own characteristics and mechanism.Generally speaking, the soil landslide along the base of the rainfall induced landslide is sliding along the base cover interface. In this paper, Nanjiang County Wangzhengbang landslide as the typical research object of soil, the engineering geological conditions and deformation characteristics were studied, the paper discussed the formation mechanism of Wangzhengbang landslide, the simulation calculation software on its stability by using Geo-Studio numerical. The research results can provide reference for the early warning and control of landslide.
引文
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[2]曹淑良,油新华.降雨诱发滑坡的作用机理及其预测预报[J].工程地质学报,2000.
[3]罗先启,李海岭,葛修润,等.降雨条件下滑坡灾害及滑坡排水效果研究[J].岩土力学,2000,21(3):231-234.
[4]刘礼领,殷坤龙,等.暴雨型滑坡降水入渗机理分析[J].岩土力学,2008,29(4):1061-1066.
[5]CLADE T,CMZIER M,SMITH P.Applying probability determination to refine landslide-triggering rainfall thresholds using an empirical[J].Antecedent Daily Rainfall Model.Pure and Applied Geophysics,2000,157:1059-1079.
[6]唐亚明,张茂省,薛强,等.滑坡监测预警国内外研究现状及评述[J].地质评论,2012,58(3):533-541.
[7]艾鸿敏,游扬声,胡祝敏.基于GPS的降雨型滑坡变形监测及数据处理[J].北京测绘,2013(4):13-16.
[8]张倬元,王士天,王兰生,等.工程地质分析原理[M].北京:地质出版社,2008.
[9]秦凯旭,冯文凯,郎秋玲.GEO—SLOPE软件在某滑坡稳定性计算中的应用[J].灾害学,2007,22(2):22-24.
[10]时卫民,郑颖人,张鲁渝.边坡稳定性分析的有限元法[J].地下空间,2001,21(5):450-454.