Research on the types and characteristics of permafrost engineering distress in the China-Nepal Transportation Corridor

IF 3.8 2区工程技术 Q1 ENGINEERING, CIVIL

Cold Regions Science and Technology Pub Date : 2025-08-27 DOI:10.1016/j.coldregions.2025.104658

Tianqi Zhang , Tao Luo , Haipeng Yang , Chonglei Zhang , Wansheng Pei

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引用次数: 0

Abstract

The treacherous terrain, complex geology, and frequent natural disasters along the China-Nepal Transportation Corridor posing significant challenges to the maintenance and construction of permafrost engineering within the corridor. This study focuses on the China-Nepal Highway (CNH), and systematically discusses the main types, typical characteristics, distribution patterns, and their interactions with different influencing factors of embankment engineering distress (EH), bridge engineering distress (BH), traffic auxiliary facilities distress (TH), and hydraulic engineering distress (HH) along the route. Field surveys showed that the distress characteristics of the main roads (G318, G216, G219) of the CNH under the freeze-thaw action are as follows: the EH were mainly crack, raveling and differential settlement, accounting for more than 45.0 %, with a higher proportion of crack exceeding 60.0 %; the BH, TH, and HH were mainly dominated by freeze-thaw erosion, accounting for more than 60.0 %, with traffic ancillary facilities being more susceptible to freeze-thaw erosion. According to the statistical results between permafrost engineering distress distribution and permafrost environmental factors, the occurrence of the ED is more prevalent in regions with MAGT below 2.5 °C and MTSFG above 0.3 m, the BD is more likely to emerge in areas with MAGT below 2 °C and MTSFG below 0.9 m, the TD is more prone to occur with MAGT below 2 °C and MTSFG above 1.2 m and the HD tends to be more common when MAGT is below 1.5 °C and MTSFG is range of 0.9–1.5 m. A variety of freeze-thaw disasters (freeze-thaw debris flow, freeze-thaw landslide, thermokarst lake, and freeze-thaw slumping, etc.) were widely distributed along the CNH, directly threatening the road safety. Based on these findings, targeted suggestions were put forward for the proposed China-Nepal Railway from both freeze-thaw disaster prevention measures and freeze-thaw erosion engineering treatment measures. The research results can not only provide basic data for permafrost-related research in the corridor, but also provide scientific references for the prevention and treatment of distress in existing and proposed permafrost engineering within the corridor.

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中尼交通走廊冻土工程灾害类型及特征研究

中尼交通走廊沿线地形险峻、地质复杂、自然灾害频发，给走廊内多年冻土工程的维护和建设带来了重大挑战。以中尼公路（CNH）为研究对象，系统探讨了沿线路堤工程窘迫（EH）、桥梁工程窘迫（BH）、交通辅助设施窘迫（TH）和水利工程窘迫（HH）的主要类型、典型特征、分布规律及其与不同影响因素的相互作用。现场调查结果表明，冻融作用下CNH主要道路（G318、G216、G219）的破坏特征为：EH以裂缝、移动和差异沉降为主，占45.0%以上，其中裂缝比例较高，超过60.0%；BH、TH、HH以冻融侵蚀为主，占60.0%以上，交通附属设施更容易受到冻融侵蚀。根据冻土工程困境之间的统计结果分布和冻土环境因素,ED地区更为普遍的发生与MAGT低于2.5°C和MTSFG 0.3米以上,BD更可能出现在地区与MAGT低于2°C和MTSFG低于0.9米,TD更容易出现MAGT低于2°C和MTSFG高于1.2和HD MAGT时往往是更普遍低于1.5°C和MTSFG范围0.9 - -1.5 m。冻融泥石流、冻融滑坡、热岩溶湖、冻融滑塌等多种冻融灾害在CNH沿线广泛分布，直接威胁道路安全。在此基础上，从冻融灾害防治措施和冻融侵蚀工程治理措施两方面对拟建中尼铁路提出针对性建议。研究成果可为廊道内多年冻土相关研究提供基础数据，也可为廊道内既有及拟建的多年冻土工程防治灾害提供科学参考。

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来源期刊

Cold Regions Science and Technology 工程技术-地球科学综合

CiteScore

7.40

自引率

12.20%

发文量

209

审稿时长

4.9 months

期刊介绍： Cold Regions Science and Technology is an international journal dealing with the science and technical problems of cold environments in both the polar regions and more temperate locations. It includes fundamental aspects of cryospheric sciences which have applications for cold regions problems as well as engineering topics which relate to the cryosphere. Emphasis is given to applied science with broad coverage of the physical and mechanical aspects of ice (including glaciers and sea ice), snow and snow avalanches, ice-water systems, ice-bonded soils and permafrost. Relevant aspects of Earth science, materials science, offshore and river ice engineering are also of primary interest. These include icing of ships and structures as well as trafficability in cold environments. Technological advances for cold regions in research, development, and engineering practice are relevant to the journal. Theoretical papers must include a detailed discussion of the potential application of the theory to address cold regions problems. The journal serves a wide range of specialists, providing a medium for interdisciplinary communication and a convenient source of reference.