Analysis on the characteristics and mechanism of Tianwanzi landslide in Jinhaihu newly liberated area, Guizhou Province
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摘要:
2022年1月3日18时55分，贵州毕节市金海湖新区归化街道田湾子发生一起顺层滑坡，形成约3.5×104 m3的堆积体，造成14 人遇难，3 人受伤。综合应用无人机航拍、现场测试等技术手段，文章详细描述了现场的地质调查，初步分析了滑坡体特征、滑坡发生的运动过程和成因机理，并对滑坡残留体的潜在危险进行了监测和分析，为现场救援行动提出搜救建议。初步研究结果认为，滑坡源区特殊的地形地貌条件、风化碎裂的泥质白云岩和不利的岩体结构面是滑坡形成的内因，边坡开挖扰动致斜坡的地表形态和应力分布发生改变是滑坡发生的外因。田湾子滑坡发生前斜坡无明显的变形迹象，灾害发生具有突发性，造成了较大的人员伤亡和经济损失，深入研究田湾子滑坡的形成过程和成灾机理，对贵州山区存在类似条件的地质灾害隐患防治工作具有现实的指导意义。
Abstract:At 18:55 on January 3rd, 2022, a bedding landslide disaster occurred in Guihua street, Jinhaihu newly liberated area, Bijie City, Guizhou Province, with a volume of about 3.5×104 m3,which resulted in 14 deaths and 3 injuries. Through the detailed geological survey, this paper comprehensively uses UAV aerial photography, field testing and other technical methods to describe the characteristics of Tianwanzi landslide in detail, preliminarily analyze the movement process and genetic mechanism of the landslide, monitor and analyze the potential risk of the landslide residue, and put forward search and rescue suggestions for on-site rescue operations. The preliminary research results show that the special topographic and geomorphic conditions in the landslide source area, weathered and fragmented argillaceous dolomite and unfavorable rock mass structural plane are the internal causes of the landslide, and the change of surface morphology and stress distribution of the slope caused by slope excavation disturbance is the external cause. Before the occurrence of Tianwanzi landslide, there was no obvious sign of slope deformation, and the disaster occurred suddenly, resulting in great human and economic losses. In-depth study of the formation process and disaster mechanism of Tianwanzi landslide has practical guiding significance for the prevention and control of potential geological hazards with similar conditions in Guizhou mountainous area.
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Key words:
- sudden landslide /
- weak intercalated layer /
- bedding landslide /
- geologic hazard /
- genetic mechanism
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表 1 岩土体物理力学参数
Table 1. Physical and strength properties of rock and soil mass
岩土体 密度/（kg·m−3） 弹性模量/MPa 泊松比 黏聚力/kPa 内摩擦角/（°） 天然 天然 滑体 2 592 17 150 0.29 1 876 28 滑面 2 160 3 200 0.36 34 7 
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[1] 郑光,许强,刘秀伟,等. 2019年7月23日贵州水城县鸡场镇滑坡-碎屑流特征与成因机理研究[J]. 工程地质学报,2020,28(3):541 − 556. [ZHENG Guang,XU Qiang,LIU Xiuwei,et al. The Jichang landslide on July 23,2019 in Shuicheng,Guizhou:Characteristics and failure mechanism[J]. Journal of Engineering Geology,2020,28(3):541 − 556. (in Chinese with English abstract)
[2] 王浩杰,孙萍,韩帅,等. 甘肃通渭“9·14”常河滑坡成因机理[J]. 现代地质,2021,35(3):732 − 742. [WANG Haojie,SUN Ping,HAN Shuai,et al. Failure mechanism of the Changhe landslide on September 14,2019 in Tongwei,Gansu[J]. Geoscience,2021,35(3):732 − 742. (in Chinese with English abstract) doi: 10.19657/j.geoscience.1000-8527.2020.073
[3] 贵州省地质矿产局. 贵州省区域地质志[M]. 北京: 地质出版社, 1987: 277 − 286
Bureau of Geology and Mineral Exploration and Development Guizhou Province. Regional geology of Guizhou Province[M]. Beijing: Geological Publishing House, 1987: 277 − 286. （in Chinese）
[4] 张咸恭, 王思敬, 张倬元, 等. 中国工程地质学[M]. 北京: 科学出版社, 2000
ZHANG Xiangong, WANG Sijing, ZHANG Zhuoyuan, et al. Engineering geology of China[M]. Beijing: Science Press, 2000. （in Chinese）
[5] 王尚彦,刘家仁. 贵州地震的分布特征[J]. 贵州科学,2012,30(2):82 − 85. [WANG Shangyan,LIU Jiaren. Distribution features of earthquake in Guizhou Province[J]. Guizhou Science,2012,30(2):82 − 85. (in Chinese with English abstract) doi: 10.3969/j.issn.1003-6563.2012.02.015
[6] 刘传正. 突发性地质灾害防治研究[M]. 北京: 科学出版社, 2021
LIU Chuanzheng. Mitigation of the geologic hazards[M]. Beijing: Science Press, 2021. （in Chinese）
[7] 刘传正, 刘艳辉, 温铭生. 长江三峡库区地质灾害成因与评价研究[M]. 北京: 地质出版社, 2007
LIU Chuanzheng, LIU Yanhui, WEN Mingsheng. Research on the geo-hazards genesis and assessment in the Three Gorges Reservoir of Changjiang River in China[M]. Beijing: Geological Publishing House, 2007. （in Chinese）
[8] 李效萌,李甜,刘金辉,等. 赣东地区小型牵引式残坡积土质滑坡稳定性及破坏模式分析[J]. 科学技术与工程,2021,21(22):9236 − 9242. [LI Xiaomeng,LI Tian,LIU Jinhui,et al. Stability and failure mode analysis of small traction residual slope soil landslide in eastern Jiangxi Province[J]. Science Technology and Engineering,2021,21(22):9236 − 9242. (in Chinese with English abstract) doi: 10.3969/j.issn.1671-1815.2021.22.008
[9] 国家质量监督检验检疫总局, 中国国家标准化管理委员会. 滑坡防治工程勘查规范: GB/T 32864—2016[S]. 北京: 中国标准出版社, 2017
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China. Code for geological investigation of landslide prevention: GB/T 32864—2016[S]. Beijing: Standards Press of China, 2017. （in Chinese）
[10] 国家市场监督管理总局, 国家标准化管理委员会. 滑坡防治设计规范: GB/T 38509—2020[S]. 北京: 中国标准出版社, 2020
State Administration of Market Supervision, Standardization Administration of the People’s Republic of China. Code for the design of landslide stabilization: GB/T 38509—2020[S]. Beijing: Standards Press of China, 2020. （in Chinese）
[11] 吕文斌,耿海深,魏赛拉加. 基于极限平衡法和Midas/GTS的张家湾滑坡稳定性[J]. 科学技术与工程,2021,21(11):4369 − 4378. [LYU Wenbin,GENG Haishen,WEI Sailajia. Stability of Zhangjiawan landslide based on limit equilibrium method and Midas/GTS[J]. Science Technology and Engineering,2021,21(11):4369 − 4378. (in Chinese with English abstract) doi: 10.3969/j.issn.1671-1815.2021.11.010
[12] 邵龙潭,王浩然,姜泽涵. 基于有限元极限平衡法的岩土结构稳定分析[J]. 中国矿业,2021,30(12):170 − 177. [SHAO Longtan,WANG Haoran,JIANG Zehan. Stability analysis of geotechnical structures based on finite element limit equilibrium method[J]. China Mining Magazine,2021,30(12):170 − 177. (in Chinese with English abstract)
[13] 张爱花,牛肖. 基于极限平衡法的边坡稳定敏感性因素分析[J]. 中外公路,2021,41(增刊 2):55 − 58. [ZHANG Aihua,Niuxiao. Analysis of sensitive factors of slope stability based on limit equilibrium method[J]. Journal of China and Foreign Highway,2021,41(Sup 2):55 − 58. (in Chinese with English abstract) doi: 10.14048/j.issn.1671-2579.2021.S2.012
[14] 王塞,邓建辉,陈菲,等. “10·10”西藏白格滑坡运动特征反演分析[J]. 哈尔滨工业大学学报,2022,54(2):162 − 170. [WANG Sai,DENG Jianhui,CHEN Fei,et al. Inverse analysis on motion characteristics of “10·10” Baige landslide in Tibet[J]. Journal of Harbin Institute of Technology,2022,54(2):162 − 170. (in Chinese with English abstract) doi: 10.11918/202009039
[15] 易庆林,周瑞,梁卫,等. 三峡库区三门洞滑坡稳定分析及抗滑桩模拟研究[J]. 人民长江,2021,52(11):111 − 116. [YI Qinglin,ZHOU Rui,LIANG Wei,et al. Stability study on Sanmendong landslide in Three Gorges Reservoir area and simulation of anti-slide pile[J]. Yangtze River,2021,52(11):111 − 116. (in Chinese with English abstract)
[16] 王惠卿,丰成君,戚帮申,等. 河北省顺平县李思庄滑坡稳定性分析[J]. 地质力学学报,2020,26(4):595 − 603. [WANG Huiqing,FENG Chengjun,QI Bangshen,et al. Analysis of the stability of the Lisizhuang landslide in Shunping County,Hebei Province[J]. Journal of Geomechanics,2020,26(4):595 − 603. (in Chinese with English abstract) doi: 10.12090/j.issn.1006-6616.2020.26.04.052
[17] 王玉川,郭其峰,周延国. 中等倾角岩层顺向坡滑坡发育特征及形成机制分析:以拖担水库左岸坝肩滑坡为例[J]. 中国地质灾害与防治学报,2021,32(4):17 − 23. [WANG Yuchuan,GUO Qifeng,ZHOU Yanguo. Development characteristics and formation mechanism of the medium-dip bedding slopes:A case study of the landslide on the left bank of Tuodan reservoir dam[J]. The Chinese Journal of Geological Hazard and Control,2021,32(4):17 − 23. (in Chinese with English abstract)
[18] 王平,朱赛楠,张枝华,等. 三峡库区大型斜倾顺层滑坡失稳机理分析:以石柱县龙井滑坡为例[J]. 中国地质灾害与防治学报,2021,32(4):24 − 32. [WANG Ping,ZHU Sainan,ZHANG Zhihua,et al. Instability mechanism of massive oblique bedding rock landslide in the Three-Gorges Reservoir:A case study of the Longjing landslide in Shizhu County of Chongqing City[J]. The Chinese Journal of Geological Hazard and Control,2021,32(4):24 − 32. (in Chinese with English abstract)
[19] 贵州省气象局. 气象信息报告[R]. 2022
Meteorological Bureau of Guizhou Province. Meteorological information report[R]. 2022. （in Chinese）
[20] 常金源,包含,伍法权,等. 降雨条件下浅层滑坡稳定性探讨[J]. 岩土力学,2015,36(4):995 − 1001. [CHANG Jinyuan,BAO Han,WU Faquan,et al. Discussion on stability of shallow landslide under rainfall[J]. Rock and Soil Mechanics,2015,36(4):995 − 1001. (in Chinese with English abstract) doi: 10.16285/j.rsm.2015.04.012
[21] 贵州省地震局. 地震信息报告[R]. 2022
Seismological Bureau of Guizhou Province. Seismic information report[R]. 2022. （in Chinese）
[22] 王涛,周葵,袁乾博,等. 地震对金沙江金坪子滑坡的稳定性影响分析[J]. 三峡大学学报(自然科学版),2021,43(1):31 − 37. [WANG Tao,ZHOU Kui,YUAN Qianbo,et al. Analysis of the effect of earthquake on the stability of Jinpingzi landslide on the Jinsha River[J]. Journal of China Three Gorges University (Natural Sciences),2021,43(1):31 − 37. (in Chinese with English abstract)
[23] 廖勇,徐闯,陈军,等. 四川长宁“6·17”地震诱发的次生地质灾害类型及其发育特征[J]. 中国地质灾害与防治学报,2021,32(1):77 − 83. [LIAO Yong,XU Chuang,CHEN Jun,et al. Types and their characteristics of geological hazards triggered by“6·17” earthquake in Changning,Sichuan Province[J]. The Chinese Journal of Geological Hazard and Control,2021,32(1):77 − 83. (in Chinese with English abstract) doi: 10.16031/j.cnki.issn.1003-8035.2021.01.11
[24] 王来贵,向丽,赵娜,等. 地震作用下顺倾多弱层岩质边坡动力响应[J]. 中国地质灾害与防治学报,2021,32(6):18 − 25. [WANG Laigui,XIANG Li,ZHAO Na,et al. Dynamic response of down-dip multi-weak-layer rock slope under earthquake[J]. The Chinese Journal of Geological Hazard and Control,2021,32(6):18 − 25. (in Chinese with English abstract) doi: 10.16031/j.cnki.issn.1003-8035.2021.06-03
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