Characteristics and preventive measures of permafrost disasters in Xiongba town of Geji County in northwestern Tibet
TANG Hua1, XV Lin1, GESANG Pingcuo2, DA Wa2, NAN Dawa2, ZHANG Xianhu1, LI Ning1, LIU Daming1, SUOLANG Duoji3
1. Northwestern Sichuan Geological Team, Bureau of Geology and Mineral Resources Exploration and Development of Sichuan Province, Sichuan Mianyang 621000, China; 2. Geothermal and Geological Team, Bureau of Mineral Resource Exploration and Development of Tibet, Tibet Lhasa, 850032, China; 3. Bureau of Natural Resources Management and Planning of Geji County in Tibet, Tibet Ali 859000, China
Abstract：The permafrost disaster in the Xiongba town of Geji County has been aggravated in recent years. Investigating the characteristics, origins and hazards of permafrost disasters is of great significance to formulate corresponding disaster prevention and mitigation policies. The authors in this paper have comprehensively analyzed the permafrost disaster in Xiongba town by basic characteristics, causes, development trends and prevention mea-sures. The main cause of aggravating permafrost disasters is the increase of rainfall and temperature caused by the global warming. The frost heaving and freeze-thawing effect of the soil are aggravated by the increasing moisture content of the soil with poor permeability and uneven distribution. The damage caused by the frost heaving and freeze-thawing effect are in form of house collapse, ground cracks, house wall cracks and uneven ground settlement, and the disruptive strength increased with the climate warming. The comprehensive control measures of diversion + flood control + drainage + engineering construction were put forward to reduce the damage of permafrost disaster. This research could provide scientific decision-making and basis for formation mechanism of permafrost disaster and prevention and control measures of major permafrost engineering construction in Xiongba town.
唐华, 徐琳, 格桑平措, 达娃, 男达瓦, 张显虎, 李宁, 刘大明, 索朗多吉. 藏西北革吉县雄巴乡场镇冻土灾害特征及防治措施[J]. 中国地质调查, 2022, 9(2): 100-109.
TANG Hua, XV Lin, GESANG Pingcuo, DA Wa, NAN Dawa, ZHANG Xianhu, LI Ning, LIU Daming, SUOLANG Duoji. Characteristics and preventive measures of permafrost disasters in Xiongba town of Geji County in northwestern Tibet. , 2022, 9(2): 100-109.
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2022, Vol. 9 
