高海拔寒区炭质板岩隧道围岩冻胀特性与原位测试分析

doi:10.3724/1000-6915.jrme.2024.0620

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Abstract To investigate the frost heave characteristics of transversely isotropic surrounding rock tunnels, we employed unidirectional freezing tests on saturated carbonaceous slate with varying bedding inclinations, theoretical modeling of uneven frost heave force, and in-situ testing. Our study focused on the frost heave characteristics of the carbonaceous slate tunnel surrounding rock, the tunnel temperature field, and the distribution characteristics of the surrounding rock frost heave force. The results revealed the following: (1) Under unidirectional freezing conditions, the uneven frost heave coefficient of slate increases progressively with the temperature gradient. The larger the freezing direction and bedding inclination angle, the stronger the uneven frost heave. (2) The envelope diagram of the freeze-thaw cycle of the surrounding rock at the entrance of the Heiqia Tunnel during the construction period shows a pear shape, with the lowest temperature and the highest freezing depth at the arch foot, reaching a maximum freezing depth of 2.97 m. (3) The measured frost heave force of the surrounding rock-structure ranged from 0.08 to 0.63 MPa, with the maximum at the left arch foot and the minimum at the left arch shoulder. (4) Considering the relationship between the freezing direction and the inclination angle of slate bedding, the theoretical model of uneven frost heave force in cold region tunnels elucidates the uneven frost heave characteristics of transversely isotropic surrounding rock. This model can serve as a reference for anti-freezing design in high-risk frost damage areas of transversely isotropic surrounding rock tunnels in cold regions.

Key words： tunnel engineering cold region tunnel saturated slate unidirectional freezing in-situ testing frost heave characteristics

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	LU Hanqing
	BAO Weixing
	YIN Yan

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LU Hanqing,BAO Weixing,YIN Yan. Frost heave characteristics and in-situ testing analysis of carbonaceous slate tunnel surrounding rock in high-altitude cold regions[J]. , 2025, 44(6): 1569-1584.

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https://rockmech.whrsm.ac.cn/EN/10.3724/1000-6915.jrme.2024.0620 OR https://rockmech.whrsm.ac.cn/EN/Y2025/V44/I6/1569

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[22]	XU Z L，CHEN J X，LUO Y B，et al. Geomechanical model test for mechanical properties and cracking features of large-section tunnel lining under periodic temperature[J]. Tunnelling and Underground Space Technology，2022，123：104319.
[23]	WU Y M，XU P，LI W B，et al. Distribution rules and key features for the lining surface temperature of road tunnels in cold regions[J]. Cold Regions Science and Technology，2020，172：102979.
[24]	仇文革，孙兵. 寒区破碎岩体隧道冻胀力室内对比试验研究[J]. 冰川冻土，2010，32(3)：557-561.(QIU Wenge，SUN Bing. Model test study of frost heaving pressures in tunnels excavated in fractured rock mass in cold regions[J]. Journal of Glaciology and Geocryology，2010，32(3)：557-561.(in Chinese))
[25]	张玉伟，赖金星，邱军领，等. 寒区隧道冻胀效应测试与分析[J]. 交通运输工程学报，2018，18(3)：64-73.(ZHANG Yuwei，LAI Jinxing，QIU Junling，et al. Test and analysis on frost heaven effects of cold region tunnel[J]. Journal of Traffic and Transportation Engineering，2018，18(3)：64-73.(in Chinese))
[26]	严健，何川，晏启祥，等. 雀儿山隧道冰碛地层冻胀力原位测试及计算分析[J]. 岩土力学，2019，40(9)：3 593-3 602.(YAN Jian，HE Chuan，YAN Qixiang，et al. In-situ test and calculational analysis on frost heaving force of moraine stratum in Que?er moutain tunnel[J]. Rock and Soil Mechanics，2019，40(9)：3 593-3 602.(in Chinese))
[27]	包卫星，卢汉青，郭强，等. 新疆高寒炭质板岩隧道围岩冻融劣化特性研究[J]. 工程地质学报，2023，31(4)：1 213-1 224.(BAO Weixing，LU Hanqing，GUO Qiang，et al. Freeze-thaw degradation characteristics of carbonaceous slate rock surrounding high cold tunnel in Xinjiang[J]. Journal of Engineering Geology，2023，31(4)：1 213-1 224.(in Chinese))
[28]	LV Z T，XIA C C，WANG Y S，et al. Analytical elasto-plastic solution of frost heaving force in cold region tunnels considering transversely isotropic frost heave of surrounding rock[J]. Cold Regions Science and Technology，2019，163(JUL.)：87-97.
[29]	FENG Q，JIANG B-S，ZHANG Q，et al. Analytical elasto-plastic solution for stress and deformation of surrounding rock in cold region tunnels[J]. Cold Regions Science and Technology，2014，108：59-68.
[30]	卢汉青，包卫星，郭强，等. 特高海拔寒区隧道施工期衬砌结构温度场及变形开裂行为研究[J]. 土木工程学报，2024，DOI：10.15951/j.tmgcxb.23121029.(LU Hanqing，BAO Weixing，GUO Qiang，et al. Research on temperature field and deformation cracking behavior of lining structure during construction of tunnel in high altitude cold regions[J]. China Civil Engineering Journal，2024，DOI：10.15951/j.tmgcxb.23121029.(in Chinese))
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[32]	李又云，张玉伟，赵亚伟，等. 川西高海拔寒区富水隧道温度测试与冻胀分析[J]. 铁道科学与工程学报，2018，15(7)：1 778-1 785.(LI Youyun，ZHANG Yuwei，ZHAO Yawei，et al. Temperature test and frost analysis of cold regional rich water tunnel at high altitudes on the western of Sichuan province[J]. Journal of Railway Science and Engineering，2018，15(7)：1 778-1 785.(in Chinese))
[33]	张玉伟，李又云，谢永利，等. 基于破碎冻融圈的寒区隧道冻胀模型及影响因素分析[J]. 现代隧道技术，2017，54(6)：93-102. (ZHANG Yuwei，LI Youyun，XIE Yongli，et al. On-frost-heave calculation model based on a broken freeze-thaw circle and its influential fractors[J]. Modern Tunnelling Technology，2017，54(6)：93-102.(in Chinese))
[34]	YAMABE T，NEAUPANE K M. Determination of some thermo-mechanical properties of sirahama sandstone under subzero temperature condition[J]. International Journal of Rock Mechanics and Mining Sciences，2001，38(7)：1 029-1 034.