青海204省道祁默段沿线多年冻土发育特征

doi:10.7522/j.issn.1000-0240.2019.0102

摘要/Abstract

摘要： 采用踏勘、挖探、钻探和地温测试手段，对区间冻土的分布、上限、年平均地温、含水率及冻土地貌等特征进行了分析研究。结果表明：研究区域多年冻土主要分布在海拔3 600 m以上地区；单一地貌形态下，冻土上限和年平均地温与海拔均呈近线性分布关系；受地形主控，积雪、蒸发、土体结构共同影响，相同海拔位置大冬树山北坡峡谷区冻土上限和年平均地温分别深和高于南坡缓坡区；地下含水量越高越有利于冻土的发育和保存，除影响冻土类型外，其在冻土边缘带是岛状冻土形成的主要因素；冻融草丘和冻融滑塌的发育程度一定程度上反映了冻土的基本特性。最后，针对区域冻土发育特征，探讨了204省道工程建设中冻土路基处理的应对工程措施。

关键词: 地温测试, 多年冻土, 发育特征, 工程措施

Abstract: Based on field exploration, testing, drilling and ground temperature monitoring, permafrost characteristics have been studied in the paper, such as permafrost distribution, permafrost table, annual mean ground temperature, water content and permafrost terrain and so on. As a result, it is clear that permafrost in the study area is mainly distributed above 3 600 m a.s.l. In various morphological forms, the relationship between permafrost table and annual mean ground temperature and altitude are nearly linear. Controlled primarily by the terrain and affected by snow cover, evaporation and soil structure, the permafrost table in the north slopes of Dadongshu Mountain is deeper and the annual mean ground temperature is higher as comparing with that in the south slopes. The higher ground water content is more conducive to the development and preservation of permafrost, in addition to affect the type of permafrost, it is the main factor for distribution of patchy permafrost in the edges of permafrost. And to a certain extent, the development degree of freeze-thaw grass mound and freeze-thaw slump reflects the basic characteristics of permafrost. In the end, according to the characteristics of regional permafrost, the corresponding engineering measures of permafrost subgrade treatment in the construction of 204-Provincial Road are discussed.

Key words: ground temperature monitoring, permafrost, development characteristics, engineering measures

中图分类号:

P642.14

庞伟军, 常刚, 苟海瑞, 王瑜鑫. 青海204省道祁默段沿线多年冻土发育特征[J]. 冰川冻土, 2019, 41(1): 93-99.

PANG Weijun, CHANG Gang, GOU Harui, WANG Yuxin. Characteristics of the permafrost from Qilian to Mole of the Highway 204 in Qinghai Province[J]. Journal of Glaciology and Geocryology, 2019, 41(1): 93-99.

参考文献

[1] Qiu Guoqing, Liu Jingren, Liu Hongxu. Dictionary of permafrost[M]. Lanzhou:Gansu Science Press, 1994.[邱国庆, 刘经仁, 刘鸿绪. 冻土学词典[M]. 兰州:甘肃科学出版社, 1994.]
[2] Cai Hancheng, Li Yong, Yang Yongpeng, et al. Variation of temperature and permafrost along Qinghai-Tibet Railway[J]. Chinese Journal of Rock Mechanics and Engineering, 2016, 35(7):1434-1444.[蔡汉成, 李勇, 杨永鹏, 等. 青藏铁路沿线多年冻土区气温和多年冻土变化特征[J]. 岩石力学与工程学报, 2016, 35(7):1434-1444.]
[3] Wu Jichun, Sheng Yu, Wu Qingbai. Processes and modes of permafrost degradation on the Qinghai-Tibet Plateau[J]. Science China:Series D Earth Sciences, 2009, 39(11):1570-1578.[吴吉春, 盛煜, 吴青柏, 等. 青藏高原多年冻土退化过程及方式[J]. 中国科学:D辑地球科学, 2009, 39(11):1570-1578.]
[4] Qi Jilin, Ma Wei. State-of-art of research on mechanical properties of frozen soils[J]. Rock and Soil Mechanics, 2010, 31(1):133-143.[齐吉琳, 马巍. 冻土的力学性质及研究现状[J]. 岩土力学, 2010, 31(1):133-143.]
[5] Chen Donggen. Research on diseases of highway subgrade and treatment counter measure recommends in permafrost regions[D]. Xi'an:Chang'an University, 2014.[陈冬根. 多年冻土区公路路基病害分析与处治对策研究[D]. 西安:长安大学, 2014.]
[6] Zhou Youwu, Guo Dongxin, Qiu Guoqing, et al. China's permafrost[M]. Beijing:Science Press, 2000.[周幼吾, 郭东信, 邱国庆, 等. 中国冻土[M]. 北京:科学出版社, 2000.]
[7] Li Shijie, Chen Wei, Jiang Yongjian, et al. Geological records for Holocene climatic and environmental changes derived from glacial, periglacial and lake sediments on Qinghai-Tibetan Plateau[J]. Quaternary Research, 2012, 32(1):151-157.[李世杰, 陈炜, 姜永见, 等. 青藏高原全新世气候环境变化的冰川、冰缘和湖泊沉积记录[J]. 第四纪研究, 2012, 32(1):151-157.]
[8] Yue Guangyang, Zhao Lin, Zhao Yonghua, et al. Relationship between soil properties in permafrost active layer and surface vegetation in Xidatan on the Qinghai-Tibetan Plateau[J]. Journal of Glaciology and Geocryology, 2013, 35(3):565-573.[岳广阳, 赵林, 赵拥华, 等. 青藏高原西大滩多年冻土活动层土壤性状与地表植被的关系[J]. 冰川冻土, 2013, 35(3):565-573.]
[9] Hu Liequn, Wu Pengfei, Liang Fengchao, et al. Analyzing the effect of snow cover in spring and winter and air temperature on frozen ground depth in Xinjiang[J]. Journal of Glaciology and Geocryology, 2014, 36(1):48-54.[胡列群, 武鹏飞, 梁凤超, 等. 新疆冬春季积雪及温度对冻土深度的影响分析[J]. 冰川冻土, 2014, 36(1):48-54.]
[10] Chang Xiaoli, Jin Huijun, He Ruixia, et al. Review of permafrost monitoring in the Northern Da Hinggan Mountains, Northeast China[J]. Journal of Glaciology and Geocryology, 2013, 35(1):93-100.[常晓丽, 金会军, 何瑞霞, 等. 大兴安岭北部多年冻土监测进展[J]. 冰川冻土, 2013, 35(1):93-100.]
[11] Pang Qiangqiang, Zhao Lin, Li Shuxun. Influences of local factors on ground temperatures in permafrost regions along the Qinghai-Tibet Highway[J]. Journal of Glaciology and Geocryology. 2011, 33(2):349-356.[庞强强, 赵林, 李述训. 局地因素对青藏公路沿线多年冻土区地温影响分析[J]. 冰川冻土, 2011, 33(2):349-356.]
[12] Liu Guangyue, Zhao Lin, Xie Changwei, et al. Variation characteristics and impact factors of the depth of zero annual amplitude of ground temperature in permafrost regions on the Tibetan Plateau[J]. Journal of Glaciology and Geocryology, 2016, 38(5):1189-1200.[刘广岳, 赵林, 谢昌卫, 等. 青藏高原多年冻土区地温年变化深度的变化规律及影响因素[J]. 冰川冻土, 2016, 38(5):1189-1200.]
[13] Wu Jichun, Sheng Yu, Yu Hui, et al. Permafrost in the Middle East section of Qilian Mountains(Ⅰ):Distribution of permafrost, 2007, 29(3):418-425.[吴吉春, 盛煜, 于晖, 等. 祁连山中东部的冻土特征(Ⅰ)-多年冻土分布[J]. 冰川冻土, 2007, 29(3):418-425.]
[14] Wu Jichun, Sheng Yu, Yu Hui, et al. Permafrost in the Middle East section of Qilian Mountains(Ⅱ):Characters of permafrost, 2007, 29(3):426-432.[吴吉春, 盛煜, 于晖, 等. 祁连山中东部的冻土特征(Ⅱ)-多年冻土特征[J]. 冰川冻土, 2007, 29(3):426-432.]
[15] Fu Lianzhen, Hu Daogong, Zhang Xujiao, et al. Study on permafrost of Qilian Mountains based on GIS spatial analysis model[J]. Journal of Geomechanics, 2015, 21(3):371-377.[傅连珍, 胡道功, 张绪教, 等. 基于GIS空间分析模型的祁连山多年冻土研究[J]. 地质力学学报, 2015, 21(3):371-377.]
[16] Jin Huijun, Zhao Lin, Wang Shaoling, et al. Degradation modes and ground temperature of permafrost along the Qinghai-Tibet Highway[J]. Science in China:Series D Earth Sciences, 2006, 36(11):1009-1019.[金会军, 赵林, 王绍令, 等. 青藏公路沿线冻土的地温特征及退化方式[J]. 中国科学:D辑地球科学, 2006, 36(11):1009-1019.]
[17] Liu Minghao, Sun Zhizhong, Niu Fujun, et al. Variation characteristics of the permafrost along the Qinghai-Tibet Railway under the background of climate change[J]. Journal of Glaciology and Geocryology, 2014, 36(5):1122-1130.[刘明浩, 孙志忠, 牛富俊, 等. 气候变化背景下青藏铁路沿线多年冻土变化特征研究[J]. 冰川冻土, 2014, 36(5):1122-1130.]
[18] Zhang Wei, Ji Ran. Response of maximum seasonally frozen depth and duration of soil frozen to climate change in Chaoyang Prefecture of Liaoning Province[J]. Journal of Glaciology and Geocryology, 2018, 40(1):18-25.[张威, 纪然. 辽宁朝阳地区季节冻土最大冻土深度和持续冻结时间与气候变化的响应研究[J]. 冰川冻土, 2018, 40(1):18-25.]
[19] Yin Guoan, Niu Fujun, Lin Zhanju, et al. The distribution characteristics of permafrost along the Qinghai-Tibet Railway and their response to environmental change[J]. Journal of Glaciology and Geocryology, 2014, 36(4):772-781.[尹国安, 牛富俊, 林战举, 等. 青藏铁路沿线多年冻土分布特征及其对环境变化的响应[J]. 冰川冻土, 2014, 36(4):772-781.]
[20] Zhang Luxin, Xiong Zhiwen, Han Longwu. Permafrost environment and permafrost engineering of Qinghai-Tibet Railway[M]. Beijing:China Communications Press, 2011.[张鲁新, 熊治文, 韩龙武. 青藏铁路冻土环境和冻土工程[M]. 北京:人民交通出版社, 2011.]
[21] Wang Shengting, Sheng Yu, Wu Jichun, et al. The characteristics and changing tendency of permafrost in the source regions of the Datong River, Qilian Mountains[J]. Journal of Glaciology and Geocryology, 2015, 37(1):27-37.[王生廷, 盛煜, 吴吉春, 等. 祁连山大通河源区冻土特征及变化趋势[J]. 冰川冻土, 2015, 37(1):27-37.]
[22] Cheng Guodong. Influences of local factors on permafrost occurrence and their implications for Qinghai-Xizang Railway design[J]. Science in China(Series D), 2003, 33(6):602-607.[程国栋. 局地因素对多年冻土分布的影响及其对青藏铁路设计的启示[J]. 中国科学(D辑), 2003, 33(6):602-607.]
[23] Wu Qingbai, Zhao Shiyun, Ma Wei, et al. Monitoring and analysis of cooling effect of block-stone embankment for Qinghai-Tibet Railway[J]. Chinese Journal of Geotechnical Engineering, 2005, 27(12):1386-1390.[吴青柏, 赵世运, 马巍, 等. 青藏铁路块石路基结构的冷却效果监测分析[J]. 岩土工程学报, 2005, 27(12):1386-1390.]
[24] Ma Wei, Wu Qingbai, Cheng Guodong. Analyses of the temperature fields within an air convective embankment of crushed rock structure along the Qinghai-Tibet Railway[J]. Journal of Glaciology and Geocryology, 2006, 28(4):586-595.[马巍, 吴青柏, 程国栋. 青藏铁路块石气冷结构路堤下冻土温度场变化分析[J]. 冰川冻土, 2006, 28(4):586-595.]
[25] Feng Ziliang, Sheng Yu, Chen Ji, et al. A preliminary analysis of protective effect on permafrost of typical embankment along Gonghe-Yushu Highway[J]. Chinese Journal of Rock Mechanics and Engineering, 2016, 35(3):638-648.[冯子亮, 盛煜, 陈继, 等. 青海省共和-玉树高速公路沿线典型冻土路基保护多年冻土效果的初步分析[J]. 岩石力学与工程学报, 2016, 35(3):638-648.]