Early warning model of deflection angle ratio for accumulation landslides#br#
RAO Yunkang1，2，FU Haiying2，YANG Tao2
(1. Key Laboratory of Geological Hazards on Three Gorges Reservoir Area，Ministry of Education，China Three Gorges University，Yichang，Hubei 443002，China；2. State Key Laboratory of Intelligent Geotechnics and Tunnelling，Southwest Jiaotong University，Chengdu，Sichuan 610031，China)
Abstract：The establishment of an effective landslide early warning model is of great significance for the prevention of landslide disasters. This study aims to establish the early warning model of deflection angle ratio for accumulation landslides. First，the tests that reproduce the deformation-destabilization process of accumulation landslides are carried out. Based on the test monitoring results，a displacement dynamics parameter，the deflection angle ratio，which has directionality and unity，is proposed. Moreover，the corresponding landslide early warning model of deflection angle ratio is presented. Finally，monitoring data from three real landslides are utilized to validate this warning model. The results show that the deflection angle ratio presents a general pattern of first fluctuation and subsequent smoothness during the evolution process of accumulation landslides. The Frobenius norm of 0.2 can be used as the dividing value between the fluctuating and smooth segments of the deflection angle ratio. The smooth characteristic of the deflection angle ratio can indicate the deformation stage of accumulation landslides. Based on this，the single-point warning criterion and the multi-point warning criterion of the Frobenius norm are proposed. When applying the early warning model of deflection angle ratio to real landslides，it is recommended that this warning model is used in conjunction with the warning model that is based on the magnitude of total unidirectional displacement，in order to arrive at a more comprehensive early warning judgment.
饶云康1，2，富海鹰2，杨 涛2. 堆积层滑坡偏角比预警模型[J]. 岩石力学与工程学报, 2024, 43(10): 2540-2551.
RAO Yunkang1，2，FU Haiying2，YANG Tao2. Early warning model of deflection angle ratio for accumulation landslides#br#. , 2024, 43(10): 2540-2551.
ZHAN Q，WANG S，GUO F，et al. Early warning model and model test verification of rainfall-induced shallow landslide[J]. Bulletin of Engineering Geology and the Environment，2022，81(8)，https：//doi.org/10.1007/s10064-022-02827-4.
[2]
宋宇飞，曹琰波，范 文，等. 基于贝叶斯方法的降雨诱发滑坡概率型预警模型研究[J]. 岩石力学与工程学报，2023，42(3)：558-574.(SONG Yufei，CAO Yanbo，FAN Wen，et al. Probabilistic early warning model for rainfall-induced landslides based on Bayesian approach[J]. Chinese Journal of Rock Mechanics and Engineering，2023，42(3)：558-574.(in Chinese))
[3]
JU N，HUANG J，HE C，et al. Landslide early warning，case studies from Southwest China[J]. Engineering Geology，2020，279：105917.
[4]
INTRIERI E，CARLÀ T，GIGLI G. Forecasting the time of failure of landslides at slope-scale：A literature review[J]. Earth-Science Reviews，2019，193：333-349.
[5]
何满潮，任树林，陶志刚. 滑坡地质灾害牛顿力远程监测预警系统及工程应用[J]. 岩石力学与工程学报，2021，40(11)：2 161-2 172. (HE Manchao，REN Shulin，TAO Zhigang. Remote monitoring and forecasting system of Newton force for landslide geological hazards and its engineering application[J]. Chinese Journal of Rock Mechanics and Engineering，2021，40(11)：2 161-2 172.(in Chinese))
[6]
郭隆基，何满潮，瞿定军，等. 南芬露天铁矿边坡稳定性分析与牛顿力临滑智能预警[J]. 煤炭科学技术，2023，51(增1)：9-17.(GUO Longji，HE Manchao，QU Dingjun，et al. Evolution analysis of slope stability and intelligent early warning of newton force in Nanfen open-pit iron mine[J]. Coal Science and Technology，2023，51(Supp.1)：9-17.(in Chinese))
[7]
陶志刚，李海鹏，孙光林，等. 基于恒阻大变形锚索的滑坡监测预警系统研发及应用[J]. 岩土力学，2015，36(10)：3 032-3 040.(TAO Zhigang，LI Haipeng，SUN Guanglin，et al. Development of monitoring and early warning system for landslides based on constant resistance and large deformation anchor cable and its application[J]. Rock and Soil Mechanics，2015，36(10)：3 032-3 040.(in Chinese))
[8]
陈 杨，邓李政，黄丽达，等. 基于声发射监测的滑坡过程预警模型[J]. 清华大学学报：自然科学版，2022，62(6)：1 052-1 058. (CHEN Yang，DENG Lizheng，HUANG Lida，et al. Landslide early warning model based on acoustic emission monitoring[J]. Journal of Tsinghua University：Science and Technology，2022，62(6)：1 052-1 058.(in Chinese))
[9]
DU Y，NING L Z，CHICAS S D，et al. A new early warning Criterion for assessing landslide risk[J]. Natural Hazards，2023，116(1)：537-549.
[10]
李 聪，朱杰兵，汪 斌，等. 滑坡不同变形阶段演化规律与变形速率预警判据研究[J]. 岩石力学与工程学报，2016，35(7)：1 407-1 414.(LI Cong，ZHU Jiebing，WANG Bin，et al. Critical deformation velocity of landslides in different deformation phases[J]. Chinese Journal of Rock Mechanics and Engineering，2016，35(7)：1 407-1 414. (in Chinese))
[11]
许 强，曾裕平. 具有蠕变特点滑坡的加速度变化特征及临滑预警指标研究[J]. 岩石力学与工程学报，2009，28(6)：1 099-1 106.(XU Qiang，ZENG Yuping. Research on acceleration variation characteristics of creep landslide and early-warning prediction indicator of critical sliding[J]. Chinese Journal of Rock Mechanics and Engineering，2009，28(6)：1 099-1 106.(in Chinese))
[12]
许 强，曾裕平，钱江澎，等. 一种改进的切线角及对应的滑坡预警判据[J]. 地质通报，2009，28(4)：501-505.(XU Qiang，ZENG Yuping，QIAN Jiangpeng，et al. Study on a improved tangential angle and the corresponding landslide prewarning criteria[J]. Geological Bulletin of China，2009，28(4)：501-505.(in Chinese))
[13]
XU Q，PENG D，ZHANG S，et al. Successful implementations of a real-time and intelligent early warning system for loess landslides on the Heifangtai terrace，China[J]. Engineering Geology，2020，278(5)：105817.
[14]
阳吉宝. 堆积层滑坡临滑预报的新判据[J]. 工程地质学报，1995，3(2)：70-73.(YANG Jibao. A new criterion for forecasting impending slide of accumulation landslide[J]. Journal of Engineering Geology，1995，3(2)：70-73.(in Chinese))
[15]
贺可强，阳吉宝，王思敬. 堆积层边坡表层位移矢量角及其在稳定性预测中的作用与意义[J]. 岩石力学与工程学报，2003，22(12)：1 976-1 983.(HE Keqiang，YANG Jibao，WANG Sijing. Displacement vector angle of colluvial slope and its significance[J]. Chinese Journal of Rock Mechanics and Engineering，2003，22(12)：1 976-1 983.(in Chinese))
徐 仲，张凯院，陆 全，等. 矩阵论简明教程[M]. 北京：科学出版社，2014：42-43. (XU Zhong，ZHANG Kaiyuan，LU Quan，et al. A concise tutorial on matrix theory[M]. Beijing：Science Press，2014：42-43.(in Chinese))
[18]
唐 然. 监测技术及其在滑坡防治过程中的应用研究[硕士学位论文][D]. 成都：成都理工大学，2007.(TANG Ran. Research on monitoring technology with the application to landslide control[M. S. Thesis][D]. Chengdu：Chengdu University of Technology，2007.(in Chinese))
[19]
沙晓鹏. 五盂高速公路K23处滑坡成因及变形监测分析[J]. 山西交通科技，2016，239(2)：32-36.(SHA Xiaopeng. The analysis of landslide causes and deformation monitoring at section of K23 for Wuyu highway[J]. Shanxi Science and Technology of Communications，2016，239(2)：32-36.(in Chinese))
2024, Vol. 43 
