地下水渗流分区的地温特征及隧道热害规避应用  

Geothermal Characteristics of Groundwater Seeping Division and Geothermal Hazard Prevention of Tunnel

作　　者：漆继红[1] 许模[1] 王能峰[2] 王迪[3] 

机构地区：[1]成都理工大学地质环境保护及地质灾害防治国家重点实验室,成都610059 [2]中水顾问集团成都勘测设计研究院,成都610072 [3]福州市勘测院,福州350000

出　　处：《防灾减灾工程学报》2015年第3期333-339,共7页Journal of Disaster Prevention and Mitigation Engineering

基　　金：国家自然科学基金项目(41402223);国家重点实验室基金项目(SKLGP2011Z016)资助

摘　　要：基于热传递微分方程讨论了水流导热影响下地温特征与深度的关系,获得地温、地温梯度与深度关系的解析表达;对渗流影响下的地温特征类型进行分析,提出了通过最小二乘法拟合地温试验数据计算渗流参量、获取渗流特征的方法及程序。并以滇西高黎贡山越岭段为研究对象,基于地温特征对其热水渗流分区进行分析。研究认为,穿越其中的拟选隧道线南北两水热活动区相互独立,黄草坝断裂阻隔了北面热水向南面渗流,判定断裂南面区域一定范围为南部热水的补给地带,越岭拟选隧道线为区内低地温通道,为合理规避隧道热害提供了依据。Based on the differential equation of heat conduction,this article discusses the convection influence on earth′s temperature and the relationship between geothermal characteristics and depth.It gets the analytical expression of geothermal characteristics with depth,proposes the method and procedure for using the least square method to analyze geothermal data and gets the seeping characteristics of groundwater.An engineering problem example is given,which can be explained by this relationship to choose the position of Gaoligong tunnel going through.It analyzes the geothermal characteristics and gets seeping division.It considers that the warm groundwater appears in the north part to the Huangcaoba fault,can′t flow to the south part of it.This fault cuts off warm groundwater flow,makes the north and south parts become separate area.It gets the results that the aim position of the tunnel is low geothermal area.This conclusion can give us proof to avoid the geothermal hazard of tunnel reasonably.

关 键 词：温度场 渗流分区特征 最小二乘法 越岭隧道 低温通道 

分 类 号：O353.1[理学—流体力学] TU81[理学—力学]