基于地温梯度数据的地下供暖管线探测方法  

Underground heating pipeline detection method based on ground temperature gradient data

作　　者：李霄龙 肖锋[2] LI Xiaolong;XIAO Feng(Jilin Co.,Ltd.of China National Building Materials Resources and Environmental Engineering,Changchun 130033,China;College of Geo-Exploration Science and Technology,Jilin University,Changchun 130021,China)

机构地区：[1]中建材资源与环境工程吉林有限公司,长春130033 [2]吉林大学地球探测科学与技术学院,长春130021

出　　处：《物探化探计算技术》2025年第2期293-299,共7页Computing Techniques For Geophysical and Geochemical Exploration

摘　　要：浅层地温测量是众多地下供暖管线探测方法中较为直接的探测手段。浅层地温数据的解释手段有很多种,而利用测温数据差商得到地温梯度进行数据处理解释具有很多优势,它能抑制背景温度场的差异,且对同源热噪声不敏感。笔者基于温度场的拉普拉斯方程,以热源正上方观测点的温度和热源外表面的温度作为边界条件,推导出水平圆柱体状热源的地温梯度公式。通过模拟供暖管道的地温梯度响应,并在加入噪声的情况下,利用相关成像法对热源的中心位置进行定位。经过模型试验和实际供暖管线探测效果对比,分析了该方法的优缺点和适用性。Various geophysical methods exist to detect underground heating pipelines,but shallow geothermal measurement is a more straightforward method.Geothermal gradient data obtained by measuring the temperature at different depths underground has the advantage of suppressing the background temperature field and homologous thermal noise.It is suitable for shallow heat source exploration.Based on the Laplace equation of the temperature field,the paper takes the temperature of the observation point directly above the heat source and the temperature of the outer surface of the heat temperature as the boundary conditions.With the newly derived positive formula as the kernel function,the correlation imaging method is used to locate the central position of the heat source.After the theoretical model test and the comparing the measured data processing result of the heating pipeline with its reality position,the advantages and applicability of this method are analyzed.

关 键 词：地温 地温梯度 相关成像法 供暖管线 

分 类 号：P314[天文地球—固体地球物理学]