Research on correlations between slope stability and rainfall of high steep slope on Nanfen open-pit iron ore
YANG Xiaojie1，2，HOU Dinggui1，2，HAO Zhenli1，2，TAO Zhigang1，2，SHI Haiyang1，2，JIN Kun1，2
(1. State Key Laboratory for GeoMechanics and Deep Underground Engineering，China University of Mining and Technology，Beijing 100083，China；2. School of Mechanic and Civil Engineering，China University of Mining and Technology，Beijing 100083，China)
Abstract：The stability of high steep slope has become a major safety concern in the process of open pit mining in NanFen open-air iron ore. According to the results of engineering geological investigation and the analysis of geologic characteristics and hydrogeology conditions，It found that rainfall in rainy season is an important cause of landslide，the monitoring data of slope stability and rainfall at the same period are analyzed，It is concluded that when the rainfall is more than 100 mm，the slope failure is closely related to the rainfall. Finite element simulation software SEEP/W is used to simulate all the stages of rainfall infiltration of high steep slope，the slope safety factor at the different seepage moment is calculated，this results not only prove the accuracy of statistical analysis but also reveal the mechanical mechanism of slope instability，meanwhile it found the landslide has a lag of about 24 hours in heavy rain，the effective treatment method for high steep slope hydrology disaster of NanFen open-air iron ore is put forward. The results of this study may be useful for the protection of the same projects.
杨晓杰1，2，侯定贵1，2，郝振立1，2，陶志刚1，2，石海洋1，2，靳 锟1，2. 南芬露天铁矿高陡边坡失稳与降雨相关性研究[J]. 岩石力学与工程学报, 2016, 35(S1): 3232-3241.
YANG Xiaojie1，2，HOU Dinggui1，2，HAO Zhenli1，2，TAO Zhigang1，2，SHI Haiyang1，2，JIN Kun1，2. Research on correlations between slope stability and rainfall of high steep slope on Nanfen open-pit iron ore. , 2016, 35(S1): 3232-3241.
何玉琼，徐则民，张 勇，等.斜坡失稳的降雨阈值模型及其应用[J].岩石力学与工程学报，2012，31(7)：1484-1490.(HE Yuqiong，XU Zemin ZHANG Yong，et al.Rainfall threshold model of rainfall-induced slope instability and its application[J].Chinese Journalof Rock Mechanics and Engineering，2012，31(7)：1484-1490.(in Chinese))
[2]
殷坤龙.滑坡灾害预测预报[M].武汉：中国地质大学出版社，2004：25-47.(YIN Kunlong. Landslide disaster prediction[M]. Wuhan：China University of Geosciences Press，2004：25-47.(in Chinese))
[3]
朱 伟，陈学东，钟小春.降雨入渗规律的实测与分析[J].岩土力学，2006，27(11)：1873-1879.(ZHU Wei，CHEN Xuedong，ZHONG Xiaochun.Observation and analysis of rainfall infiltration[J].Rock and Soil Mechanics，2006，27(11)：1873-1879.(in Chinese))
[4]
何朋朋，姚磊华，刘立鹏，等.地下水位随机性影响下的边坡可靠性分析[J].吉林大学学报：地球科学版，2009，39(2)：288-293.(HE Pengpeng，YAO Leihua，LIU Lipeng，et al.Reliability analysis of a slope considering therandomness of ground water table[J].Journal of JilinUniversity：Earth Science，2009，39(2)：288-293.(in Chinese))
[5]
徐则民，黄润秋，杨立中.斜坡水一岩化学作用问题[J].岩石力学与工程学报，2004，23(16)：2778-2887.(XU Zemin，HUANG Runqiu，YANG Lizhong.Some problems on chemical water-rock interaction in slopes[J].Chinese Journal of Rock Mechanics and Engineering，2004，23(16)：2778-2887.(in Chinese))
[6]
张 玲，黄敬峰，王深法，等.基于GIS的滑坡临界降雨指标的研究[J].浙江大学学报：农业与生命科学版，2003，29(5)：493-498.(ZHANG Ling，HUANG Jingfeng，WANG Shenfa，etal.Research on the critical precipitation index of landslide on GIS[J]. Journal of Zhejiang University：Agriculture andLife Sciences，2003，29(5)：493-498.(in Chinese))
[7]
谢剑明，刘礼领，殷坤龙，等.浙江省滑坡灾害预警预报的降雨阈值研究[J].地质科技情报，2003，22(4)：100-101.(XIE Jianming，LIU Liling，YIN Kunlong，etal.Study on the threshold valves of rainfall of landslide hazard for early-waring and prediction in Zhejiang province[J].Geological Science and Technology Information，2003，22(4)：100-101.(in Chinese))
[8]
BRAND E W，PREMCHITT J，PHILLIPSON H B. Relationship between rainfall and landslide in HongKong[C]// Proceedings of the Fourth International Symposium on Landslide.Torondo：[s. n.]，1984，377-384.
[9]
POLEMIO M，SDAO F.The role of rainfall in the landslide hazard：the case of the Avigliano urban area(Southern Apennines，Italy)[J].Engeering Geology，1999，53(3/4)：297-309.
[10]
李悼芬，陈 虹.雨水渗透与香港滑坡灾害[J].水文地质工程地质，1997，(4)：34-38.(LI Daofen，CHEN Hong. The relation between landslide and rainfall in Hong Kong[J].Hydrogeology andEngineering Geology，1997，(4)：34-38.(in Chinese))
[11]
朱文彬，刘宝琛. 降雨条件下土体滑坡的有限元数值分析[J].岩石力学与工程学报，2002，21(4)：409-512.(ZHU Wenbin，LIU Baochen.Forming and development process of soilandslide during rainfall[J].Chinese Journal of Rock Mechanics and Engineering，2002，21(4)：409-512.(in Chinese))
[12]
高华喜，殷坤龙.降雨与滑坡灾害相关性分析及预警预报阀值之探讨[J].岩土力学.2007，28(5)：1055-1060.(GAO Huaxi，YIN Kunlong.Discuss on the correlations between landslides and rainfall and threshold for landslide early-warning and prediction[J]. Rock and Soil Mechanics，2007，28(5)：1055-1060.(in Chinese))
[13]
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)：1081-1090.(HE Manchao.Real-time remote monitoring and forecasting system for geological disasters of landslides and its engineering application[J]. Chinese Journal of Rock Mechanics and Engineering，2009， 28(6)：1081-1090.(in Chinese))
[14]
刘新荣，张 梁，于 瑜，等.降雨条件下酉阳大涵边坡滑动机制研究[J].岩土力学，2013，34(10)：2898-2904.(LIU Xinrong，ZHANG Liang，YU Yu，etal. Research on sliding mechanism of Dahan slope in Youyang county under rainfall condition[J]. Rock and Soil Mechanics，2013，34(10)：2898-2904.(in Chinese))
2016, Vol. 35 
