摘要
围岩的导温系数是隧道内气温预测重要的特征值。本文根据实测隧道围岩温度 ,采用一维热传导模型 ,古典显式差分格式和最小二乘法 ,对一寒区隧道围岩 (强风化花岗岩 )的导温系数进行了反分析。并用解析方法和数值计算分析了隧道衬砌内防水层对隧道围岩冻深的影响 。
Based on the temperature measured in the adjacent rock in a cold region tunnel,the thermal conductivity of the rock is analyzed by means of one dimensional thermal conduction model,in which the classic differential scheme and least square method was used.The influence of inner water-proofing layer on the frost depth of lining is analyzed,in which the analytic function and numerical method was used.Some referable conclusions are obatined finally.
出处
《低温建筑技术》
2004年第4期4-6,共3页
Low Temperature Architecture Technology
关键词
寒区
围岩
导温系数
防水层
冻深
cold region
adjacent rock
thermal conductivity
water-proofing layer
frost line
