MECHANISM OF SLOPE FAILURE INDUCED BY UNDERMINING
—A CASE STUDY OF JIWEISHAN ROCKSLIDE IN WULONG
Li Tengfei1，2，LI Xiao1，LI Shouding1，HE Jianming1，MA Chaofeng3，4
(1. Key Laboratory of Engineering Geomechanics，Institute of Geology and Geophysics，Chinese Academy of Sciences，Beijing 100029，China；2. Graduate University of Chinese Academy of Sciences，Beijing 100049，China；3. Department of Hydraulic Engineering，Tsinghua University，Beijing 100084，China；4. AVIC Geotechnical Engineering Institute Co.，
Ltd.，Beijing 100098，China)
Abstract：Landslide geohazards induced by underground mining at home and broad were summarized，and the current status of studies were analyzed. Common characteristics of these geological disasters were generalized. To reinforce the understanding of mechanism of undermining-induced landslides，taking Jiweishan Rockslide in Wulong for example，large-scale three-dimensional numerical model was built with the Continuum-based Discrete Element Method. The GPU technology that could accelerate the velocity of the circulations was used in the process of operation. Landslide failure process induced by undermining was modelled. The influence of rockslide stress field and displacement field caused by undermining were analyzed，and the formation mechanism and movement trend were investigated. The conclusions are as follow：the failure mechanism of Jiweishan Rockslide is part of the key block in front of the landslide collapsed，the sliding body at back of the landslide slided，and the karstificated belt was suddenly broken with shear rupture that had triggered the rockslide. Failure pattern was testified concretely with variation analysis of stress and deformation. This study shows that Jiweishan Rockslide was induced by underground mining.
李腾飞1，2，李 晓1，李守定1，赫建明1，马超锋3，4. 地下采掘诱发斜坡失稳破坏机制研究——以武隆鸡尾山崩滑为例[J]. 岩石力学与工程学报, 2012, 31(s2): 3803-3810.
Li Tengfei1，2，LI Xiao1，LI Shouding1，HE Jianming1，MA Chaofeng3，4. MECHANISM OF SLOPE FAILURE INDUCED BY UNDERMINING
—A CASE STUDY OF JIWEISHAN ROCKSLIDE IN WULONG. , 2012, 31(s2): 3803-3810.
[1] BORIS B. Numberial modelling of complex slope deformations[Ph. D. Thesis][D]. Saskaton：University of Saskatchewan，1997.
[2] BORIS B，DOUG S. The frank slide：a reexamination of the failure mechanism[J]. Canadian Geotechnical Journal，1998，35(2)：299–311.
[3] 孙玉科，姚宝魁. 我国岩质边坡变形破坏的主要地质模式[J]. 岩石力学与工程学报，1983，2(1)：67–76.(SUN Yuke，YAO Baokui. Principal geological models of deformation and failure of rock slopes in China[J]. Chinese Journal of Rock Mechanics and Engineering，1983，2(1)：67–76.(in Chinese))
[4] 黄润秋. 20世纪以来中国的大型滑坡及其发生机制[J]. 岩石力学与工程学报，2007，26(3)：435–451.(HUANG Runqiu. Large-scale landslides and their sliding mechanism in China since the 20th century[J]. Chinese Journal of Rock Mechanics and Engineering，2007，26(3)：435–451.(in Chinese))
[5] 许 强，黄润秋，殷跃平，等. 2009年6•5重庆武隆鸡尾山崩滑灾害基本特征与成因机制初步研究[J]. 工程地质学报，2009，17(4)：433–444.(XU Qiang，HUANG Runqiu，YIN Yueping，et al. The Jiweishan landslide of June 5，2009 in Wulong，Chongqing：characteristics and failure mechanism[J]. Journal of Engineering Geology，2009，17(4)：433–444.(in Chinese))
[6] XU Q，FAN X M，HUANG R Q，et al. A catastrophic rockslide-debris flow in Wulong，Chongqing，China in 2009：background，characterization，and causes[J]. Landslides，2010，7(1)：75–87.
[7] 殷跃平. 斜倾厚层山体滑坡视向滑动机制研究——以重庆武隆鸡尾山滑坡为例[J]. 岩石力学与工程学报，2010，29(2)：217–226.(YIN Yueping. Mechanism on apparent dip sliding of inclined bedding rockslide—a case study of Jiweishan rockslide in Wulong，Chongqing[J]. Chinese Journal of Rock Mechanics and Engineering，2010，29(2)：217–226.(in Chinese))
[8] YIN Y P，SUN P，ZHANG M，et al. Mechanism on apparent dip sliding of oblique inclined bedding rockslide at Jiweishan，Chongqing，China[J]. Landslides，2011，8(1)：49–65.
[9] YIN Y P. Recent catastrophic landslides and mitigation in China[J]. Journal of Rock Mechanics and Geotechnical Engineering，2011，3(1)：10–18.
[10] 刘传正. 重庆武隆鸡尾山危岩体形成与崩塌成因分析[J]. 工程地质学报，2010，18(3)：297–304.(LIU Chuanzheng. Mechanism analysis on the Jiweishan rockfall disaster happened in Wulong，Chongqing，June 5，2009[J]. Journal of Engineering Geology，2010，18(3)：297–304.(in Chinese))
[11] 重庆武隆“6•5”山体垮塌专家组. 重庆武隆“6•5”山体垮塌专家组调查报告[R]. 重庆：重庆武隆“6•5”山体垮塌专家组，2009. (Expert Group on “6•5”Rockmass Collapse Wulong，Chongqing. Report on “6•5”rockmass collapse Wulong， Chongqing[R]. Chongqing：Expert Group on “6•5”Rockmass Collapse Wulong，Chongqing，2009. (in Chinese))
[12] 潘宏宇. 采动滑坡机制与控制采掘方法研究[硕士学位论文][D]. 西安：西安科技大学，2005.(PAN Hongyu. Analyzing the mechanism and control mining method research about mining landslide[M. S. Thesis][D]. Xi?an：Xi?an University of Science and Technology，2005. (in Chinese))
[13] 刘传正. 重大地质灾害防治理论与实践[M]. 北京：科学出版社，2009：97–104.(LIU Chuanzheng. Theory and its application on megageohazards mitigation[M]. Beijing：Science Press，2009：97–104.(in Chinese))
[14] 林义兴. 长江三峡链子崖危岩体变形特性试验研究[J]. 河海大学学报，1996，24(5)：60–66.(LIN Yixing. Experimental study on deformation behaviour of dangerous rock mass of Lianziya cliff in Three Gerges Area of the Yangtze River[J]. Journal of Hohai University，1996，24(5)：60–66.(in Chinese))
[15] STEPHEN P B，HOWARD J S. Landslide research in the South Wales coalfield[J]. Engineering Geology，1996，43(1)：65–80.
[16] 陈祖煜，汪小刚，杨 健，等. 岩质边坡稳定分析——原理•方法•程序[M]. 北京：中国水利水电出版社，2004：137–143.(CHEN Zuyu，WANG Xiaogang，YANG Jian，et al. Rock slope stability analysis—theory，methods and programs[M]. Beijing：China Water Power Press，2004：137–143.(in Chinese))
[17] 李宏杰. 典型人类活动对边坡变形及稳定性的影响研究[博士学位论文][D]. 北京：中国科学院研究生院，2008.(LI Hongjie. Slope deformation and stability research induced by typical human activities[Ph. D. Thesis][D]. Beijing：Graduate University of Chinese Academy of Sciences，2008.(in Chinese))
[18] 陈自生，张晓刚. 1994–04–30四川省武隆县鸡冠岭滑坡→崩塌→碎屑流→堵江灾害链[J]. 山地研究，1994，12(4)：225–229. (CHENG Zisheng，ZHANG Xiaogang. A hazard-chain of landslide→collapse→debris flow→river stoppage in Wulong county，Sichuan province on April 30，1994[J]. Mountain Research，1994，12(4)：225–229.(in Chinese))
[19] 金德山. 云南元阳老金山滑坡[J]. 中国地质灾害与防治学报，1998，9(4)：98–101.(JIN Deshan. Laojinshan landslide in Yuanyang County，Yunnan Province[J]. The Chinese Journal of Geological Hazard and Control，1998，9(4)：98–101.(in Chinese))
[20] 黄波林，陈小婷，刘广宁，等. 巫山县望霞乡桐心村危岩体变形破坏机制分析[J]. 工程地质学报，2008，16(4)：459–464.(HUANG Bolin，CHEN Xiaoting，LIU Guangning，et al. Failure mode analysis of dangerous rockmass at Tongxin village in Wushan town of Wangxia county[J]. Journal of Engineering Geology，2008，16(4)：459–464. (in Chinese))
[21] 陈泽富，孙纪名，王成华. 贵州纳雍崩塌式滑坡成灾特征及其避灾警示作用[J]. 中国地质灾害与防治学报，2006，17(3)：32–35. (CHEN Zefu，SUN Jiming，WANG Chenghua. Characteristics of the falling-slide type landslide in Nayong in Guizhou and the lessons learned for disaster mitigation in other areas[J]. The Chinese Journal of Geological Hazard and Control，2006，17(3)：32–35.(in Chinese))
[22] JONES D B，SIDDLE H J，REDDISH D J，et al. Landslides and undermining：slope stability interaction with mining subsidence behaviour[C]// Proceedings of the 7th ISRM International Congress on Rock Mechanics. Aachen：Rotterdam，1991：898–905
[23] 杨忠民，黄国明. 地下采动诱发斜坡变形机制[J]. 西安矿业学院学报，1999，19(2)：105–109.(YANG Zhongmin，HUANG Guoming. Deformation mechanism of declivity caused by underground mining movement[J]. Journal of Xi?an Mining Institute，1999，19(2)：105–109.(in Chinese))
[24] 殷跃平. 中国典型滑坡[M]. 北京：大地出版社，2008：72–77.(YIN Yueping. Typical landslides in China[M]. Beijing：Land Press，2008：72–77.(in Chinese))
[25] LI S H，ZHAO M H，WANG Y N，et al. A new numerical method for DEM-block and particle model[J]. International Journal of Rock Mechanics and Mining Science，2004，41(3)：1–5.
2012, Vol. 31 
