寒区隧道围岩导温系数及其冻深分析  

Analysis on Thermal Conductivity and Frost Depth of Enclosing Rock of Tunnel in Cold Region

作　　者：水伟厚[1] 高广运[1] 韩晓雷[2] 吕康成[3] 

机构地区：[1]同济大学地下建筑与工程系,上海200092 [2]西安建筑科技大学,西安710055 [3]西安公路交通大学,西安710064

出　　处：《地下空间》2002年第4期343-346,共4页Underground Space

摘　　要：本文根据一寒区强风化花岗岩隧道实测围岩温度 ,采用一维热传导模型、古典显式差分格式和最小二乘法 ,对该隧道围岩导温系数进行了反分析。用解析方法和数值计算法分析了影响隧道围岩冻深的主要因素 ,所得结论有一定的工程实用价值。Based on the temperature measured from the surrounding weathered granite of tunnel in cold region, the thermal conductivity of the rock is analyzed by means of the one-dimensional thermal conducting model, the classic difference scheme and the least square method. The influences of the main factors on the frost depth of the enclosure rocks are analyzed by the analytic and numerical methods. Finally, some referable conclusions are obtained from engineering practice.

关 键 词：寒区 隧道 围岩 导温系数 防水层 冻深 

分 类 号：U451.2[建筑科学—桥梁与隧道工程]