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重庆交通大学学报（自然科学版）

重庆交通大学学报（自然科学版） ›› 2024, Vol. 43 ›› Issue (3): 35-44.DOI: 10.3969/j.issn.1674-0696.2024.03.05

• 交通基础设施工程 • 上一篇    

水热活动带下的隧道热害特征与成因分析

刘星辰1,2，黄锋1,2，陈树汪3，王安民3，杨冬2   

  1. (1. 重庆交通大学 省部共建山区桥梁及隧道工程国家重点实验室, 重庆 400074； 2. 重庆交通大学 土木工程学院, 重庆 400074； 3. 云南省交通规划设计研究院有限公司，云南 昆明 650051)
  • 收稿日期:2023-03-28 修回日期:2023-07-04 发布日期:2024-03-21
  • 作者简介:刘星辰（1993—），男，河北保定人，博士研究生，主要从事隧道工程、岩土工程方面的研究。E-mail：1454264762@qq.com 通信作者：黄锋（1982—），男，重庆人，教授，博士，主要从事岩土工程、地下工程方面的研究。E-mail：huangfeng216@126.com
  • 基金资助:
    国家自然科学基金项目(52078090)；重庆市自然科学基金项目(cstc2020jcyj-msxmX0679)；重庆市研究生科研创新项目(CYB22229)；山区桥梁及隧道工程国家重点实验室开放基金项目(SKLBT-19-006；SKLBT-YF2106)

Characteristics and Causes of Tunnel Thermal Damage in Hydrothermal Activity Zones

LIU Xingchen1,2, HUANG Feng1,2, CHEN Shuwang3, WANG Anmin3, YANG Dong2   

  1. (State Key Laboratory of Bridge and Tunnel Engineering in Mountainous Areas Jointly Constructed by the Ministry and the Province, Chongqing Jiaotong University, Chongqing 400074, China; 2. School of Civil Engineering, Chongqing Jiaotong University, Chongqing 400074, China; 3. Yunnan Transportation Planning, Design and Research Institute Co., Ltd., Kunming 650051, Yunnan, China)
  • Received:2023-03-28 Revised:2023-07-04 Published:2024-03-21

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摘要： 滇西地区的地热资源丰富，部分隧道工程在穿越水热活动带时会面临高温挑战，严重影响施工质量与进度。为揭示水热活动带下的隧道热害特征，以腾越隧道为例，采用地质构造勘察法和温泉地球化学分析方法对该区域内的水热活动循环模式进行了研究；基于大地热流值对区域地温带进行了划分，利用SiO2地热温标对隧道热害进行了预测。分析结果表明：受地质构造影响，该区域水热活动的热源来自火山岩浆，褶皱与断裂是热水循环增温的主要通道，水源补给则来自大气降雨，热水循环、增温、径流期间的水岩反应导致水体Ca2+上升；腾越隧道沿线以中、低温地热系统为主，该区域内的热量传递以热传导为主，隧道全线的热害占比高达87.3%。

关键词: 隧道工程；地质工程；隧道热害；水热活动带；地质构造；地球化学特征；热水循环模式

Abstract: Abundant geothermal resources in the western part of Yunnan Province present a challenge for partial tunnel projects in dealing with high temperatures when crossing hydrothermal activity zones, seriously affecting construction quality and progress. To reveal the thermal damage characteristics of tunnels through hydrothermal active zones, geological structure survey methods and geochemical analysis of hot springs were employed to study the hydrothermal activity cycle modes in the region by taking Tengyue Tunnel as an example. Based on the heat flux value of the earth, the regional geothermal zone was divided, and the SiO2 geothermometer was utilized to predict tunnel thermal damage. Analysis conclusions indicate that, influenced by geological structures, the heat source of hydrothermal activity in this region originates from volcanic magma. Folds and fractures act as the primary pathways for the circulation and heating of hot water, with water supply replenished by atmospheric rainfall. Water-rock reactions during the circulation, heating, and runoff phases of hot water lead to an increase of Ca2+ in the water. Along the Tengyue Tunnel alignment, the dominant geothermal systems are of medium to low temperature. Heat transfer in this area is mainly through heat conduction, and the proportion of thermal damage along the entire tunnel is as high as 87.3%.

Key words: tunnel engineering; geological engineering; tunnel thermal damage; hydrothermal activity zone; tectonics; geochemical characteristics; hot water circulation mode

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