艰险山区高地温长大隧道热害处治措施研究

Study on Treatment Measures for Thermal Damage of Long Tunnels in High Temperature and Dangerous Mountainous Areas

国道G219线泸水至腾冲段腾越隧道穿越高黎贡山,隧址区分布有三个水热活动带,根据地热特征与勘查资料划分了隧道热害等级及对应段落,总结了高地温环境对隧道施工及衬砌结构的危害,根据腾越隧道高地温特征以及热害严重程度,提出对应不同热害等级的施工降温处理措施,同时优化高地温段落的隧道结构设计方案。

The Tengyue Tunnel of Lushui-Tengchong Section of the National Highway G219 crosses the Gaoligong Mountain. There are three hydrothermal activity zones in the tunnel site. According to the geothermal characteristics and the survey data, the tunnel thermal hazard levels and corresponding sections are divided, and the hazards of the high temperature environment on the tunnel construction and lining structure are summarized. According to the high temperature characteristics and the severity of the thermal hazard of the Tengyue Tunnel, the construction cooling treatment measures corresponding to different thermal hazard levels are proposed. At the same time, the tunnel structure design scheme of high temperature section is optimized.