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摘要:
西藏边境地区地质灾害高发，对区内人民生命财产安全和经济建设造成严重威胁。本文搜集西藏21个边境县的地质灾害详细调查数据并进行统计分析，查明该区域共有
3224 处地质灾害点，包括崩塌768处、滑坡697处、泥石流1738 处、冰湖溃决型链式灾害21处。其中，大型及以上的崩塌99处、滑坡48处、泥石流23处。综合区域地貌、气候特征，将西藏边境区域分为东段（南迦巴瓦峰—错那）、中段（错那—普兰）及西段（普兰—日土）。本文系统研究总结各段的地质灾害分布规律与危害特征，结合地质灾害孕灾背景及诱发因素，选取高程、坡度、水系密度、工程岩组、断裂密度、年均降雨量及地震动峰值加速度7个影响因子，基于层析分析法和加权信息量法对西藏边境地质灾害进行危险性评价，识别出察隅县察隅曲、墨脱县雅鲁藏布江段、错那县娘姆江流域、洛扎县洛扎曲、亚东县麻曲、定结县朋曲、定日县绒辖曲、聂拉木县波曲及吉隆县吉隆藏布等9个流域为地质灾害高危险区。在此基础上，本文提出了边境地区建设中需关注建设场地地质安全评价、高陡斜坡蠕滑堵江、冰湖溃决、地震灾害及其长期后效应等四个关键问题，为西藏边境地区的宏观地质灾害风险管控提供依据。Abstract:A large number of geo-hazards pose a major threat to the economic growth of Xizang's border areas. This paper collects geo-hazards data from 21 border counties in Xizang, and statistics show that there are
3239 occurrences of geo-hazards in this area, including 768 collapses, 697 landslides, and1738 debris flows, among which there are 99 large or larger collapses, 48 landslides, and 23 debris flows. There are also 21 glacial lake outburst disasters. Based on the characteristics of landforms and climate, the border area is divided into the eastern section (Nanjiabawa Peak–Cuona), the middle section (Cuona–Pulan), and the western section (Pulan–Ritu). The researchers systematically studied the distribution patterns and hazard characteristics of geological hazards in these different sections. The chromatographic analysis method and the information quantity method are used to analyze the risk of geo-hazards in combination with the disaster-causing mechanisms and inducing factors of the geo-hazards in this region. The selected factors include altitude, slope, aspect, water system, stratum, annual average precipitation, and peak ground acceleration. Nine watersheds were identified as high-risk areas for geological hazards. Finally, this paper puts forward following suggestions: focusing on the evaluation of geological safety at construction sites, the disaster chain of landslides and blocking rivers, and the long-term effects of earthquakes, in order to provide a basis for the management and control of geo-hazards risk in the border areas of Xizang.-
Key words:
- Xizang /
- border areas /
- geo-hazards /
- distribution /
- risk assessment
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[1] 曹华文,李光明,张林奎,等,2020. 西藏山南列麦始新世花岗岩独居石U-Th-Pb年龄及地质意义[J]. 沉积与特提斯地质,40(2):31 − 42.
Cao H W,Li G M,Zhang L K,et al.,2020. Monazite U-Th-Pb age of Liemai Eocene granites in the southern Tibet and its geological implications[J]. Sedimentary Geology and Tethyan Geology,40(2):31 − 42 (in Chinese with English abstract).
[2] 崔鹏,陈晓清,程尊兰,等,2010. 西藏泥石流滑坡监测与防治[J]. 自然杂志,32(1):19 − 25+66.
Cui P,Chen X Q,Cheng Z L,et al.,2010. Monitoring and Prevention of Debris-flows and Landslides in Tibet[J]. Chinese Journal of Nature,32(1):19 − 25+66 (in Chinese with English abstract).
[3] 董国臣,莫宣学,赵志丹,等,2021. 大陆碰撞过程的火山岩响应:以西藏林周林子宗火山岩为例[J]. 沉积与特提斯地质,41(2):332 − 339.
Dong G C,Mo X X,Zhao Z D,et al.,2021. A response of volcanic rocks to the India-Asia continental collision:A case study on Linzizong volcanic rocks in Linzhou,Tibet[J]. Sedimentary Geology and Tethyan Geology,41(2):332 − 339 (in Chinese with English abstract).
[4] 付广裕,高尚华,张国庆,等,2015. 2015年尼泊尔MS8.1地震的地壳重力均衡背景与地表形变响应特征[J]. 地球物理学报,58(6):1900 − 1908. doi: 10.6038/cjg20150606
Fu G Y,Gao S H,Zhang G Q,et al.,2015. Gravitational isostasy background and surface deformation response characteristics of the 2015 Nepal MS8.1 earthquake[J]. Chinese Journal of Geophysics,58(6):1900 − 1908 (in Chinese with English abstract). doi: 10.6038/cjg20150606
[5] 何一民,李馨妤,2018. 强疆固边与西藏边境城镇体系建设[J]. 四川师范大学学报:社会科学版,45(6):163 − 172. doi: 10.3969/j.issn.1000-5315.2018.06.022
He Y M,Li X Y,2018. Strengthening the Frontier and the Construction of Tibet Border Town System[J]. Journal of Sichuan Normal University (Social Sciences Edition),45(6):163 − 172 (in Chinese with English abstract). doi: 10.3969/j.issn.1000-5315.2018.06.022
[6] 何果佑,白武军,向天葵,等,2012. 浅析西藏东南部地区地质灾害的形成机理及分布规律[J]. 资源环境与工程,26(5):483 − 488.
He G Y,Bai W J,Xiang T K,et al.,2012. Discussion on Formation Mechanism and Distribution Law of Geological Hazards in the Southeast of Tibet[J]. Resources Environment & Engineering,26(5):483 − 488 (in Chinese with English abstract).
[7] 胡桂胜,陈宁生,苏鹏程,等,2016. 西藏聂拉木县“4·25”尼泊尔地震次生山地灾害与防灾减灾对策[J]. 自然灾害学报,25(4):70 − 76.
Hu G S,Chen N S,Su P C,et al.,2016. Secondary mountain disasters induced by the “4·25” Nepal earthquake in Nyalam County and disaster prevention and mitigation countermeasures[J]. Journal of Natural Disasters,25(4):70 − 76 (in Chinese with English abstract).
[8] 贾洋,崔鹏,2020. 西藏冰湖溃决灾害事件极端气候特征[J]. 气候变化研究进展,16(4):395 − 404.
Jia Y,Cui P,2020. The extreme climate background for glacial lakes outburst flood events in Tibet[J]. Climate Change Research,16(4):395 − 404 (in Chinese with English abstract).
[9] 刘建康,张佳佳,高波,等,2019. 我国西藏地区冰湖溃决灾害综述[J]. 冰川冻土,41(6):1335 − 1347.
Liu J K,Zhang J J,Gao B,et al.,2019. An overview of glacial lake outburst flood in Tibet, China[J]. Journal of Glaciology and Geocryology,41(6):1335 − 1347 (in Chinese with English abstract).
[10] 刘晶晶,程尊兰,李泳,等,2008. 西藏冰湖溃决主要特征[J]. 灾害学,23(1):55 − 60. doi: 10.3969/j.issn.1000-811X.2008.01.013
Liu J J,Cheng Z L,Li Y,et al.,2008. Characteristics of Glacier-Lake Breaksin Tibet[J]. Journal of Catastrophology,23(1):55 − 60 (in Chinese with English abstract). doi: 10.3969/j.issn.1000-811X.2008.01.013
[11] 刘晶晶,唐川,程尊兰,等,2011. 气温对西藏冰湖溃决事件的影响[J]. 吉林大学学报:地球科学版,41(4):1121 − 1129.
Liu J J,Tang C,Cheng Z L,et al.,2011. Impact of Temperature on Glacier-Lake Outbursts in Tibet[J]. Journal of Jilin University(Earth Science Edition),41(4):1121 − 1129 (in Chinese with English abstract).
[12] 刘春玲,童立强,祁生文,等,2016. 喜马拉雅山地区冰川湖溃决灾害隐患遥感调查及影响因素分析[J]. 国土资源遥感,28(3):110 − 115.
Liu C L,Tong L Q,Qi S W,et al.,2016. Remote sensing investigation and influence factor analysis of glacier lake outburst potential in the Himalayas[J]. Remote Sensing for Land and Resources,28(3):110 − 115 (in Chinese with English abstract).
[13] 李军,褚宏亮,李滨,等,2021. 基于高分影像与InSAR解译的西藏林芝则隆弄高位链式地质灾害发育特征分析[J]. 中国地质灾害与防治学报, 32(3):42 − 50.
Li J,Chu H L,Li B,et al.,2021. Analysis of development characteristics of high-elevationchain geological hazard in Zelongnong,Nyingchi,Tibet based on high resolution image and InSAR interpretation[J]. The Chinese Journal of Geological Hazard and Control, 32(3):42 − 50 (in Chinese with English abstract).
[14] 李珊,翟靖超,张利华,2015. 西藏朋曲流域水电工程地质灾害危险性评价[J]. 地球与环境,43(5):540 − 546.
Li S,Zhai J C,Zhang L H,et al.,2015. Geological Hazards Risk Assessment of Hydropower Program in the Pumqu Basin,Tibet,China[J]. Earth and Environment,43(5):540 − 546 (in Chinese with English abstract).
[15] 李云贵,张作辰,1998. 西藏樟木滑坡及综合治理[J]. 中国地质灾害与防治学报,9(4):20 − 25+32.
Li Y G,Zhang Z C,1998. Comprehensive mitigation of Zhangmu Landslide in Tibet[J]. The Chinese Journal of Geological Hazard and Control,9(4):20 − 25+32 (in Chinese with English abstract).
[16] 梅乐,陈丽霞,曾斌,等,2018. 西藏边境亚东口岸崩塌灾害危险性评估[J]. 工程地质学报,26(增刊):85 − 91.
Mei L,Chen L X,Zeng B,et al.,2018. Hazard assessment of rockfall at Yadong border ports in Tibet[J]. Joumal of Engineering Geology,26(Suppl):85 − 91 (in Chinese with English abstract).
[17] 莫艳合,许冲,刘灿,2008. 西藏错那县“2007-08-10”特大泥石流灾害成因及防治对策[J]. 防灾科技学院学报,10(3):43 − 46.
Mo Y H,Xu C,Liu C,2008. The Causes and Prevention Countermeasures of 2007-08-10 Large-scale Debris Flow Hazard in Cuona County,Tibet[J]. Journal of Institute of Disaster-Prevention Science and Technology,10(3):43 − 46 (in Chinese with English abstract).
[18] 裴希琛,2019. 基于GIS的冰川湖溃决灾害风险评估[D]. 中国地质大学(北京).
Pei X C,2019. Risk Assessment of Glacier Lake Outburst Disaster Based on GIS[D]. China University of Geosciences(Beijing) (in Chinese with English abstract).
[19] 彭轩明,鄢道平,黄波林,2006. 西藏及邻区地质灾害分布与发展趋势[J]. 华南地质与矿产, 22(3):61 − 69.
Peng X M,Yan D P,Huang B L,2006. Geohazard distributing and trending in Tibet and its vicinity[J]. Geology and Mineral Resources of South China, 22(3):61 − 69 (in Chinese with English abstract).
[20] 彭建兵,马润勇,卢全中,等,2004. 青藏高原隆升的地质灾害效应[J]. 地球科学进展,19(3):457 − 466.
Peng J B,Ma R Y,Lu Q Z,et al.,2004. Geological hazards effects of uplift of Qinghai-Tibet Plateau[J]. Advance in Earth Sciences,19(3):457 − 466 (in Chinese with English abstract).
[21] 秦四清,李国梁,薛雷,等,2014. 西北与西藏地区某些地震区地震趋势分析[J]. 地球物理学进展,29(3):1046 − 1067.
Qin S Q,Li G L,Xue L,et al.,2014. Analysis of the future earthquake situation for some seismic zones in the northwest China and Tibet[J]. Progress in Geophysics,29(3):1046 − 1067 (in Chinese with English abstract).
[22] 铁永波,葛华,高延超,2022. 二十世纪以来西南地区地质灾害研究历程与展望[J]. 沉积与特提斯地质,42(4):653 − 665.
Tie Y B,Ge H,Gao Y C,et al.,2022. The research progress and prospect of geological hazards in Southwest China since the 20th Century[J]. Sedimentary Geology and Tethyan Geology,42(4):653 − 665 (in Chinese with English abstract).
[23] 童立强,聂洪峰,李建存,等,2013. 喜马拉雅山地区大型泥石流遥感调查与发育特征研究[J]. 国土资源遥感, 25(4):104 − 112.
Tong L Q,Nie H F,Li J C,et al.,2013. Survey of large-scale debris flow and study of its development characteristics using remote sensing technology in the Himalayas[J]. Remote Sensing for Land and Resources, 25(4):104 − 112 (in Chinese with English abstract).
[24] 童龙云,张继,孔应德,2019. 西藏定日朋曲流域达仓沟冰湖溃决泥石流特征[J]. 中国地质灾害与防治学报, 30(6):34 − 39,48.
Tong L Y,Zhang J,Kong Y D,2019. Characteristics of the Dacanggou Debris Flow induced by breakout of glacier-lake in the Pengqu Basin Dirin County of Tibet[J]. The Chinese Journal of Geological Hazard and Control, 30(6):34 − 39,48 (in Chinese with English abstract).
[25] 万佳威,褚宏亮,李滨,等,2021. 西藏嘉黎断裂带沿线高位链式地质灾害发育特征分析[J]. 中国地质灾害与防治学报, 32(3):51 − 60.
Wan J W,Chu H L,Li B,et al.,2021. Characteristics, types, main causes and development of high-position geohazard chains along the Jiali fault zone, Tibet, China[J]. The Chinese Journal of Geological Hazard and Control, 32(3):51 − 60 (in Chinese with English abstract).
[26] 吴中海,赵根模,刘杰,2016. 2015年尼泊尔Ms8.1地震构造成因及对青藏高原及邻区未来强震趋势的影响[J]. 地质学报,90(6):1062 − 1085. doi: 10.3969/j.issn.0001-5717.2016.06.002
Wu Z H,Zhao G M,Liu J,2016. Tectonic Genesis of the 2015 Ms8.1 Nepal Great Earthquake and its Influence on Future Strong Earthquake Tendency of Tibetan Plateau and its Adjacent Region[J]. Acta Geologica Sinica,90(6):1062 − 1085 (in Chinese with English abstract). doi: 10.3969/j.issn.0001-5717.2016.06.002
[27] 熊德清,崔笑烽,2021. 喜马拉雅山脉地震带主要地质灾害与地形地貌关系——以西藏日喀则地区为例[J]. 地质通报,40(11):1967 − 1980. doi: 10.12097/j.issn.1671-2552.2021.11.014
Xiong D Q,Cui X F,2021. The relationship between main geological hazard and topography in the Himalayan seismic belt:A case study in the Xigaze area,Tibet[J]. Geological Bulletin of China,40(11):1967 − 1980 (in Chinese with English abstract). doi: 10.12097/j.issn.1671-2552.2021.11.014
[28] 殷跃平,2000. 西藏波密易贡高速巨型滑坡特征及减灾研究[J]. 水文地质工程地质,27(4):8 − 11. doi: 10.3969/j.issn.1000-3665.2000.04.003
Yin Y P,2000. Rapid huge landslide and hazard reduction of Yigong River in the Bomi,Tibet[J]. Hydrogeology Engineering Geology,27(4):8 − 11 (in Chinese with English abstract). doi: 10.3969/j.issn.1000-3665.2000.04.003
[29] 卓拉,罗布,2019. 西藏边境地区的社会治理与和谐稳定探析[J]. 西藏发展论坛, (5):62 − 65.
Zhuo L,Luo B,2019. Exploring Social Governance and Harmony and Stability in Tibet's Border Areas[J]. Tibet Development Forum, (5):62 − 65 (in Chinese with English abstract).
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