可再生能源2017，Vol.35Issue(1)：119-125,7.
地热开采的裂隙渗透T-H-M耦合模型及模拟研究
The coupled T-H-M model in fractured rock mass and its numerical simulations during geothermal exploitation
摘要
Abstract
Geothermal exploitation is a typical Thermal-Hydrologic-Mechanical coupling problem.In this paper,based on the background of geothermal exploitation from fractured rock mass,firstly,we developed new porosity and permeability functions respectively for the matrix or fractures with the temperature variables,and built the Thermal-Hydrologic-Mechanical coupling m thematical model of thermal reservoir with fractures.After that,we used numerical simulations of this model to solve the thermal recovery in the plane of well with simplified fractures,and it is concluded that the fracture opening has a great influence on the temperature field and geothermal capacity for the geothermal reservoir.The results show that the fractured rock mass between the injection well and production well is the main supply region of geothermal resources.The natural fracture or artificial crack opening are the main factors to control the reservoir temperature and improve the efficiency of geothermal exploitation The geothermal production increases nearly six times with the fracture opening doubles.关键词
地热开采/渗透率/T-H-M耦合/裂隙/数值模拟Key words
geothermal exploitation/permeability/T-H-M coupling/fractures/numerical simulation分类
能源科技引用本文复制引用
方艺蛟,刘卫群,王瞾龙..地热开采的裂隙渗透T-H-M耦合模型及模拟研究[J].可再生能源,2017,35(1):119-125,7.基金项目
国家“973”计划(2015CB251602,2009CB219605) （2015CB251602,2009CB219605）
江苏省自然科学基金(BK20141125). （BK20141125）
