РЕЖИМ РАЗРУШЕНИЯ ЛЬДОСОДЕРЖАЩЕГО СКЛОНА ПРИ ЦИКЛАХ ЗАМОРАЖИВАНИЯ-ОТТАИВАНИЯ Study on hydro-thermal changes during freeze-thaw cycles of ice-riched debris deposits

Mengfei Qu, Huan Yu, Qijun Hu, Enxi Qiu, Xusheng Wan

Аннотация


Для изучения характера разрушения льдосодержащих склонов под влиянием циклов замораживания-оттаивания были проведены модельные испытания в холодильной камере при различном содержании льда (12%, 16% и 20%) и количестве циклов замораживания–оттаивания. Результаты показали, что с ростом содержания льда на склоне формируется “нулевая завеса”, увеличение числа циклов замораживания–оттаивания делает температуру склона более чувствительной к изменениям температуры окружающей среды, а глубина оттаивания и промерзания грунта увеличивается. Под влиянием циклов замораживания–оттаивания в горизонтальном направлении склона возникают трещины растягивающего типа, а в вертикальном направлении основным механизмом разрушения является накопление деформаций ползучести.

Полный текст статьи публикуется в английской версии журнала
«Soil Mechanics and Foundation Engineering”, vol.62, No.5


Литература


Lv Ruren, Tang Bangxing, Zhu Pingyi. Debris Flow and Environment in Tibet[M]. Chengdu: University of Electronic Science and Technology of China Press, 1999:19-28

Zhang Yongshuang, Qu Yongxin, Wang Xianli, et al. On the Engineering Geological Classification of Quaternary Glacial Deposits in Southwestern Mountain Area of China[J]. Journal of Engineering Geology, 2009,17(05):581-589.

Haeberli W, Noetzli J, Arenson L, et al. Mountain permafrost: development and challenges of a young research field[J]. Journal of glaciology, 2010, 56(200): 1043-1058.

Li Bonan, Fu Wei, Zhang Xuebing. Propagation characteristics of elastic waves in warm ice-rich frozen soil[J]. Rock and Soil Mechanics, 44(7), 2023:1916-1924.

Peng Hui, Ma Wei, Mu Yanhu, et al. Analysis of disease investigation and long-term deformation characteristics of common fill embankment of the Qinghai—Tibet highway[J]. Rock and Soil Mechanics,2015, 36(7): 2049-2056.

Li C, Wang R, Gu D, et al. Temperature and ice form effects on mechanical behaviors of ice-richmoraine soil of Tianmo valley nearby the Sichuan-Tibet Railway[J]. Engineering Geology, 2022, 305: 106713.

Yang Suiqiao, Wang Ningning, Zhang Hu. Study on creep test and creep model of warm frozen soil[J]. Journal of Glaciology and Geocryology, 2020, 42(3): 834-842.

Luo Lun, Zhu Liping, Wang Yongjie, et al. The process of freezing and thawing and the zero curtain effect of debris-covered area of the Galongla Glacier in the southeastern Tibetan Plateau[J]. Journal of Glaciology and Geocryology, 2019, 41(04): 751-760．

Huggel, Christian, et al. "Recent and future warm extreme events and high-mountain slope stability." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 368.1919 (2010): 2435-2459.

Subramanian, Srikrishnan Siva, Tatsuya Ishikawa, and Tetsuya Tokoro. "Stability assessment approach for soil slopes in seasonal cold regions." Engineering geology 221 (2017): 154-169.

Sun B Y, Xiao J B, Li Z B, et al. An analysis of soil detachment capacity under freeze-thaw conditions using the Taguchi method[J]. Catena, 2018, 162: 100-107.

Wang T, Li P, Li Z, et al. The effects of freeze–thaw process on soil water migration in dam and slope farmland on the Loess Plateau, China[J]. Science of the total environment, 2019, 666: 721-730.

Jin D W, Sun J F, Fu S L. Discussion on landslides hazard mechanism of two kinds of low angle slope in permafrost region of Qinghai-Tibet plateau[J]. Yantu Lixue(Rock Soil Mech.), 2005, 26(5): 774-778.

Zhang Xinxin, Fan Xuanmei, Zhang Wensong, et al. Initiation mechanism of wedge landslide in alpine regions be centrifugal model test[J]. Chinese Journal of Rok Mechanics and Engineering, 42(5), 2023:1202-1213.

Wang Yuehua, Huang Tianzhu, Li Jianlin, et al. Model test research on stress reponse of high and steep slopes with structural planes during excavation unloading[J]. Chinese Journal of rock mechanics and engineering, 2023,42(8):1866-1877.

Ding-song X I E, Hong C A I, Ying-qi W E I, et al. Scaling principle and method in seepage tests on coarse materials[J]. Chinese Journal of Geotechnical Engineering, 2015, 37(2): 369-373.

Zheng F, Shao S, Wang S. Effect of freeze-thaw cycles on the strength behaviour of recompacted loess in true triaxial tests[J]. Cold Regions Science and Technology, 2021, 181: 103172.

Anhua X U. Analysis of the sensitivity of highway diseases in permafrost regions to ground temperatures and ice contents[J]. Journal of Glaciology & Geocryology, 2014, 36(3): 622-625.

Outcalt S I, Nelson F E, Hinkel K M. The zero‐curtain effect: Heat and mass transfer across an isothermal region in freezing soil[J]. Water Resources Research, 1990, 26(7): 1509-1516.


Ссылки

  • На текущий момент ссылки отсутствуют.