高温岩体地热开发的块裂介质固流热耦合三维数值模拟  

3D NUMERICAL SIMULATION FOR COUPLED THM OF ROCK MATRIX-FRACTURED MEDIA IN HEAT EXTRACTION IN HDR

作　　者：赵阳升[1,2] 王瑞凤[1] 胡耀青[1] 万志军[1] 谢耀社[1] 

机构地区：[1]太原理工大学采矿研究所 [2]太原理工大学采矿研究所,太原030024

出　　处：《岩石力学与工程学报》2002年第12期1751-1755,共5页Chinese Journal of Rock Mechanics and Engineering

基　　金：教育部长江学者奖励计划骨干教师配套基金;国家杰出青年科学基金(59625409);山西省自然科学基金(98075)资助项目

摘　　要：在深入论述高温岩体地热开发研究与发展现状的基础上,提出了高温岩体地热开发的块裂介质固流热耦合数学模型及其数值模拟方法,提出了该数学模型详细的求解策略与求解方法。对6 000 m深的高温岩体地热开发进行了详细的数值分析,揭示了:(1) 岩体温度随地热提取降低及其分布变化的规律;(2) 岩体中基质岩块内、裂缝内应力随地热提取的降低规律;(3) 裂缝宽度随地热提取变化的规律。对高温岩体地热开发决策、技术方案选择提供了理论基础及其方法。This paper discussed the development of heat extraction in hot dry rock, presented a thermo-hydro-mechanical coupled mathematical model for 3D rock matrix-fractured medium and the detailed strategy and methods to solve this mathematics model, and carried out a detailed 3D numerical simulation for exploitation in deep-seated HDR 6000 m under the surface. The following are revealed: (1) drop of rock temperature with the heat extraction and the distribution variation; (2) reduction of stress within the matrices and fractures with the heat extraction; (3) the variation of aperture of fracture with the heat extraction. This paper offers a foundation and method for the decision and project selection in the heat exploitation of deep-seated HDR.

关 键 词：高温岩体 地热 块裂介质 固流热耦合 三维数值模拟 

分 类 号：TK529[动力工程及工程热物理—热能工程]