摘要
浅层地热能是地热资源的重要组成部分,开发浅层地热能必须以地质勘查评价为基础,需要掌握岩土体初始温度、导热系数等热物性参数,热响应试验是获取这些参数的基本方法。在兰州市区某场地进行了2个钻孔的地层初始温度、两种功率(4 kW、8 kW)恒热量加热、加热恒温度和制冷恒温度五种工况下的现场试验。实验获得研究区地层的初始温度为14.94℃,导热系数为2.7 W/(m·K),单孔每延米排热量、吸热量分别为63.07、26.14 W/m,并据此评价了研究区的浅层地热能资源。
Shallow geothermal energy is an important part of geothermal resources,and the development of shallow geothermal energy must be based on geological exploration evaluation,and the thermal response test is the basic method to obtain the thermal properties such as initial temperature and thermal conductivity of the rock and soil which are should be mastered.Five working conditions of two boreholes were carried out in an area of Lanzhou City,including the initial stratigraphy temperature,the constant heating of two powers(4 kW and 8 kW),the constant temperature heating and the constant temperature refrigeration.The results show that the initial stratigraphy temperature is 14.94℃,the thermal conductivity is 2.7 W/(m·K),the heat emission and absorption per meter of single hole are 63.07 W/m and 26.14 W/m respectively.The shallow geothermal energy resources through these data are evaluated.
作者
马宝强
张凌鹏
范斌
孟华
蒲万旭
MA Bao-qiang;ZHANG Ling-peng;FAN Bin;MENG Hua;PU Wan-xu(College of Geoscience and Survey Engineering,China University of Mining and Technology(Beijing),Beijing 100083,China;The Second Geological Exploration Institute of Gansu Geology and Mineral Bureau, Lanzhou 730020, China)
出处
《科学技术与工程》
北大核心
2019年第34期86-94,共9页
Science Technology and Engineering
基金
兰州市浅层地热能调查评价项目(1212011220829)资助
关键词
热响应试验
初始温度
恒热加热
加热恒温度
制冷恒温度
thermal response test
initial temperature
constant power heating
constant temperature heating
constant temperature refrigeration
