A preliminary analysis of protective effect on permafrost of typical embankment along Gonghe—Yushu highway
FENG Ziliang1，2，SHENG Yu1，CHEN Ji1，WU Jichun1，LI Jing1，CAO Yuanbing1，2，
HU Xiaoying1，2，ZHANG Xiumin3
(1. State Key Laboratory of Frozen Soil Engineering，Cold and Arid Regions Environmental and Engineering Research Institute，Chinese Academy of Sciences，Lanzhou，Gansu 730000，China；2. College of Resources and Environment，University of Chinese Academy of Sciences，Beijing 100049，China；3. Shaanxi Regional Electric Power Group Company Limited，Xi′an，Shaanxi 710000，China)
Abstract：Along the Gonghe—Yushu highway，three typical permafrost embankments，namely insulated board embankment，block-stone embankment and ventilated embankment were utilized. In order to study the process of variation of the underlying permafrost and to compare three measures，the temperature variations of the shallow layer(0–4 m) and deep layer(below 4 m) were analyzed. The chosen sections have a similar underlying permafrost conditions. The results showed that all three measures were confronted with the thermal asymmetry from the shady to sunny slope and the thermal asymmetry damaged the embankment stability. The deep temperature showed a continuous trend of increase. At the same depth，insulated embankment had the largest rate of increase，followed by the crushed-rock embankment，and the ventilated embankment had the smallest one. There was an uplift of artificial permafrost table for all three measures and still showing a continuous uplifting trend. The preliminary monitoring results showed that all three measures were effective in protecting permafrost from thawing. However，it has just been a short period since the construction of the highway，whether the measures are efficient to protect permafrost in the future is unknown，and further study is still ongoing.
[1] 陈 继，冯子亮，盛 煜，等. 214国道沿线的多年冻土及其工程地质条件评价[J]. 冰川冻土，2014，36(4)：790–801.(CHEN Ji，FENG Ziliang，SHENG Yu，et al. Permafrost along national highway 214 and its engineering geological condition evaluation[J]. Journal of Glaciology and Geocryology，2014，36(4)：790–801.(in Chinese))
[2] 冯子亮，盛 煜，陈 继，等. 青海省共和—玉树高速公路新建块石路基下的温度状况分析[J]. 冰川冻土，2014，36(4)：969–975. (FENG Ziliang，SHENG Yu，CHEN Ji，et al. Analyzing the temperature regime within the block stone embankment of the newly constructed Gonghe—Yushu expressway in Qinghai Province[J]. Journal of Glaciology and Geocryology，2014，36(4)：969–975.(in Chinese))
[3] 盛 煜，张鲁新，杨成松，等. 保温处理措施在多年冻土区道路工程中的应用[J]. 冰川冻土，2002，24(5)：618–622.(SHENG Yu，ZHANG Luxin，YANG Chengsong，et al. Application of thermal-insulation treatment to roadway engineering in permafrost regions[J]. Journal of Glaciology and Geocryology，2002，24(5)：618–622.(in Chinese))
[4] 程国栋，张建明，盛 煜，等. 保护冻土的保温原理[J]. 上海师范大学学报：自然科学版，2005，32(4)：1–6.(CHENG Guodong，ZHANG Jianming，SHENG Yu，et al. principles of thermal insulation for permafrost preservation[J]. Journal of Shanghai Normal University：Natural Science，2005，32(4)：1–6.(in Chinese))
[5] 温 智，盛 煜，马 巍，等. EPS 保温板在青藏铁路中应用的适用性评价数值模拟[J]. 铁道学报，2005，27(3)：91–96.(WEN Zhi，SHENG Yu，MA Wei，et al. Numerical simulation on application of EPS in embankment engineering of Qinghai—Tibet railway[J]. Journal of the China Railway Society，2005，27(3)：91–96.(in Chinese))
[6] 温 智，盛 煜，马 巍，等. 保温法在青藏铁路路基工程中应用的适用性评价[J]. 冰川冻土，2005，27(5)：694–700.(WEN Zhi，SHENG Yu，MA Wei，et al. Evaluation of application of the insulation to embankment in Qinghai—Tibet railway[J]. Journal of Glaciology and Geocryology，2005，27(5)：694–700.(in Chinese))
[7] 汪生军，马春珊. 多年冻土区保温板路基的优化设计[J]. 青海交通科技，2009，(1)：19–21.(WANG Shengjun，MA Chunshan. Optimization design of insulation embankment in permafrost zones[J]. Transportation Research in Qinghai，2009，(1)：19–21.(in Chinese))
[8] 盛 煜，温 智，马 巍. 青藏铁路北麓河试验段路基保温材料处理措施初步分析[J]. 岩石力学与工程学报，2003，22(增2)：2 659–2 663. (SHENG Yu，WEN Zhi，MA Wei. Preliminary analysis on insulation treatment of embankment at Beiluhe test section of Qinghai—Tibet railway[J]. Chinese Journal of Rock Mechanics and Engineering， 2003，22(Supp.2)：2 659–2 663.(in Chinese))
[9] 温 智，盛 煜，马 巍，等. 保温法保护多年冻土的长期效果分析[J]. 冰川冻土，2006，28(5)：760–765.(WEN Zhi，SHENG Yu，MA Wei，et al. Long-term effect of insulation on permafrost on the Tibetan Plateau[J]. Journal of Glaciology and Geocryology，2006，28(5)：760–765.(in Chinese))
[10] 马 巍，程国栋，吴青柏. 多年冻土地区主动冷却地基方法研究[J]. 冰川冻土，2002，24(5)：579–587.(MA Wei，CHENG Guodong，WU Qingbai. Preliminary study on technology of cooling foundation in permafrost regions[J]. Journal of Glaciology and Geocryology，2002，24(5)：579–587.(in Chinese))
[11] 冯文杰，马 巍，张鲁新，等. 碎块石护坡在寒区道路工程中的应用[J]. 冰川冻土，2003，25(6)：632–637.(FENG Wenjie，MA Wei，ZHANG Luxin，et al. Application of riprap slope protection to roadway engineering in permafrost regions[J]. Journal of Glaciology and Geocryology，2003，25(6)：632–637.(in Chinese))
[12] GHENG G D，YUANMING L，ZHIZHONG S，et al. The‘thermal semi-conductor’effect of crushed rocks[J]. Permafrost and Periglacial Processes，2007，18(2)：151–160.
[13] 徐敩祖，孙斌祥，赖远明，等. 青藏铁路片石路基长期使用效果分析[J]. 冰川冻土，2004，26(1)：101–105.(XU Xiaozu，SUN Binxiang，LAI Yuanming，et al. Study on the long-term effects of ballast embankment of the Qinghai—Tibet railway[J]. Journal of Glacilogy and Geocryology，2004，26(1)：101–105.(in Chinese))
[14] 李国玉，李 宁，康佳梅. 青藏铁路冻土区开放块石护坡路基降温机制研究[J]. 岩石力学与工程学报，2007，26(增1)：3 161–3 169. (LI Guoyu，LI Ning，KANG Jiamei. Study on cooling mechanism of embankment with crushed-stone side-slope along Qinghai—Tibet railway in permafrost region[J]. Chinese Journal of Rock Mechanics and Engineering，2007，26(Supp.1)：3 161–3 169.(in Chinese))
[15] 姜 凡，刘 石，王海刚，等. 冻土块石路基的保冷效果数值计算研究[J]. 铁道学报，2004，26(4)：109–115.(JIANG Fan，LIU Shi， WANG Haigang，et al. Numerical simulation on the cooling effect of gravels embankment in permafrost areas[J]. Journal of the China Railway Society，2004，26(4)：109–115.(in Chinese))
[16] GOERING D J，KUMAR P. Winter-time convection in open-graded embankments[J]. Cold Regions Science and Technology，1996，24(1)：57–74.
[17] 何 平，程国栋，马 巍，等. 块石通风性能实验研究[J]. 岩土工程学报，2006，28(6)：789–792.(HE Ping，CHENG Guodong，MA Wei，et al. Researches on ventilation properties of block stones layer[J]. Chinese Journal of Geotechnical Engineering，2006，28(6)：789–792.(in Chinese))
[18] 何树生，张明义，张 耀，等. 多年冻土区开放块石护坡降温特性室内试验研究[J]. 铁道学报，2008，30(4)：54–58.(HE Shusheng，ZHANG Mingyi，ZHANG Yao，et al. Laboratory investigation on cooling characteristics of open block-stone revetment in permafrost regions[J]. Journal of the China Railway Society，2008，30(4)：54–58.(in Chinese))
[19] 俞祁浩，钱 进，游艳辉，等. 块石路基对流特性实验研究[J]. 冰川冻土，2012，34(2)：411–417.(YU Qihao，QIAN Jjin，YOU Yanhui，et al. Experimental study of convective characteristics of block-stone embankment[J]. Journal of Glaciology and Geocryology，2012，34(2)：411–417.(in Chinese))
[20] 李东庆，常 法，张 坤，等. 青藏公路黑马河试验段碎石垫层路基工程效果初步分析[J]. 冰川冻土，2011，33(5)：1 081–1 087.(LI Dongqing，CHANG Fa，ZHANG Kun，et al. Preliminary analysis of engineering effect of crushed rocks mat embankment in Heimahe section of Qinghai—Tibet highway[J]. Journal of Glaciology and Geocryology，2011，33(5)：1 081–1 087.(in Chinese))
[21] 穆彦虎，马 巍，孙志忠，等. 青藏铁路块石路基冷却降温效果对比分析[J]. 岩土力学，2010，31(增1)：284–292.(MU Yanhu，MA Wei，SUN Zhizhong，et al. Comparative analysis of cooling effect of crushed rock embankment along the Qinghai—Tibet railway[J]. Rock and Soil Mechanics，2010，31(Supp.1)：284–292.(in Chinese))
[22] MU Y H，MA W，LIU Y Z，et al. Monitoring investigation on thermal stability of air-convection crushed-rock embankment[J]. Cold Regions Science and Technology，2010，62(2)：160–172.
[23] 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)：1 386–1 390.(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)：1 386–1 390.(in Chinese))
[24] 牛富俊，马 巍，赖远明. 青藏铁路北麓河试验段通风管路基工程效果初步分析[J]. 岩石力学与工程学报，2003，22(增2)：2 652–2 658. (NIU Fujun，MA Wei，LAI Yuanming. Preliminary analysis on engineering effect of ventilation embankment at beiluhe testing section of Qinghai—Tibet railway[J]. Chinese Journal of Rock Mechanics and Engineering，2003，22(Supp.2)：2 652–2 658.(in Chinese))
[25] FUJUN N，GUODONG C，HUIMIN X，et al. Field experiment study on effects of duct-ventilated railway embankment on protecting the underlying permafrost[J]. Cold Regions Science and Technology，2006，45(3)：178–192.
[26] 牛富俊，程国栋，赖远明. 青藏铁路通风路堤室内模型试验研究[J]. 西安工程学院学报，2002，24(3)：1–6.(NIU Fujun，CHENG Guodong，LAI Yuanming. Laboratory study on ventilation duct roadbed of Qinghai—Tibet railway[J]. Journal of Xi?an Engineering University，2002，24(3)：1–6.(in Chinese))
[27] 喻文兵，赖远明，牛富俊，等. 多年冻土区铁路通风路基室内模型试验的温度场特征[J]. 冰川冻土，2002，24(5)：601–607.(YU Wenbing，LAI Yuanming，NIU Fujun，et al. Temperature field features in the laboratory experiment of the ventilated railway embankment in permafrost regions[J]. Journal of Glaciology and Geocryology，2002，24(5)：601–607.(in Chinese))
[28] 俞祁浩，潘喜才，程国栋，等. 通风路基主要影响因素及应对措施研究[J]. 岩石力学与工程学报，2007，26(增2)：3 045–3 051.(YU Qihao，PAN Xicai，CHENG Guodong，et al. Study on main influential factors on ventilated embankment and corresponding measures[J]. Chinese Journal of Rock Mechanics and Engineering，2007，26(Supp.2)：3 045–3 051.(in Chinese))
[29] 李 宁，苏 波，全晓娟，等. 冻土通风管路基的温度场分析与设计原则探讨[J]. 土木工程学报，2005，38(2)：81–86.(LI Ning，SU Bo，QUAN Xiaojuan，et al. Approach on temperature field analysis and design principle of bed for ventilating pipeline in frozen soil[J]. China Civil Engineering Journal，2005，38(2)：81–86.(in Chinese))
[30] 盛 煜，房建宏，张秀敏，等. 214国道沿线多年冻土分布特征与制图[C]// 寒旱区工程与环境研究. 兰州：兰州大学出版社，2012：221–228.(SHENG Yu，FANG Jianhong，ZHANG Xiumin，et al. Distribution pattern and mapping of permafrost along the National Highway No.214[C]// Research Monograph of Cold and Arid Regions Engineering and Environment. Lanzhou：Lanzhou University Press，2012：221–228.(in Chinese))
[31] 马 巍，穆彦虎，李国玉，等. 多年冻土区铁路路基热状况对工程扰动及气候变化的响应[J]. 中国科学：地球科学，2013，43(3)：478–489.(MA Wei，MU Yanhu，LI Guoyu，et al. Responses of embankment thermal regime to engineering activities and climate change along the Qinghai—Tibet railway[J]. Science China：Earth Sciences，2013，43(3)：478–489.(in Chinese))
[32] 孙志忠，马 巍，李东庆. 青藏铁路北谨河试验段块石路基与普通路基的地温特征[J]. 岩土工程学报，2008，30(2)：303–308.(SUN Zhizhong，MA Wei，LI Dongqing. Ground temperature characteristics of block stone embankment and traditional embankment at Beiluhe along Qinghai—Tibet railway[J]. Chinese Journal of Geotechnical Engineering，2008，30(2)：303–308.(in Chinese))
2016, Vol. 35 
