基于MC-DFN模拟的EGS采热影响研究

王俊超; 李成钰; 李馨馨

doi:10.19912/j.0254-0096.tynxb.2023-1848

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太阳能学报 ›› 2025, Vol. 46 ›› Issue (3) : 91-99. DOI: 10.19912/j.0254-0096.tynxb.2023-1848

基于MC-DFN模拟的EGS采热影响研究

王俊超¹, 李成钰², 李馨馨¹

作者信息 +

STUDY ON HEAT EXTRACTION PERFORMANCE OF ENHANCED GEOTHERMAL SYSTEMS （EGS） BASED ON MC-DFN SIMULATION

Wang Junchao¹, Li Chengyu², Li Xinxin¹

Author information +

文章历史 +

摘要

提出基于蒙特卡洛-离散裂隙网络（MC-DFN）模型的地热开采模拟方法,研究裂隙密度、倾角和迹长对增强型地热系统（EGS）采热性能的影响并分析关键影响因子。结果表明：裂隙几何参数过低或过高均不利于热量充分开采,确定裂隙密度为0.003条/m²、两组裂隙倾角为30°与120°、迹长在36.55~43.77 m之间是最合理的参数组合;裂隙几何参数对采热效果影响的敏感性程度从大到小依次为迹长、密度、倾角。

Abstract

This study proposes a simulation method of geothermal extraction based on the Monte Carlo-discrete fracture network （MC-DFN） model. It investigates the effects of fracture density, inclination angle, and trace lengths on heat extraction performance and analyze key influencing factors. The results reveal that excessively low or high fracture geometry parameters are detrimental to heat extraction. Optimal parameter combinations include a fracture density of 0.003 bars/m², two sets of fractures with inclination angles of 30° and 120°, and trace lengths ranging from 36.55 m to 43.77 m. The sensitivity of fracture geometry parameters to heat extraction follows the order： fracture length > density > inclination angle.

导出引用

王俊超, 李成钰, 李馨馨. 基于MC-DFN模拟的EGS采热影响研究[J]. 太阳能学报. 2025, 46(3): 91-99 https://doi.org/10.19912/j.0254-0096.tynxb.2023-1848

Wang Junchao, Li Chengyu, Li Xinxin. STUDY ON HEAT EXTRACTION PERFORMANCE OF ENHANCED GEOTHERMAL SYSTEMS （EGS） BASED ON MC-DFN SIMULATION[J]. Acta Energiae Solaris Sinica. 2025, 46(3): 91-99 https://doi.org/10.19912/j.0254-0096.tynxb.2023-1848

中图分类号： TK521

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