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

Wang Junchao; Li Chengyu; Li Xinxin

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

English Version Reader LoginJournal Login

您当前的位置：

首页 >

文章列表页 >

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

更新时间：2025-10-18

- STUDY ON HEAT EXTRACTION PERFORMANCE OF ENHANCED GEOTHERMAL SYSTEMS （EGS） BASED ON MC-DFN SIMULATION
- Vol. 46, Issue 3, Pages: 91-99(2025)
- 作者机构：
  
  1. 中国地质大学（武汉）工程学院,武汉 430074
  2. 中建幕墙有限公司,武汉 430100
- 作者简介：
- 基金信息：
- DOI：10.19912/j.0254-0096.tynxb.2023-1848
  CLC： TK521
- Published Online：07 April 2025，
  
  Published：2025
- 稿件说明：
移动端阅览
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.

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

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/m

、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/m

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.

关键词

Keywords

references

李克勋, 宗明珠, 魏高升. 地热能及与其他新能源联合发电综述[J]. 发电技术, 2020, 41(1): 79-87.

王昌龙, 黄志甲, 李欢, 等. 注入温度对增强型地热系统性能的影响研究[J]. 太阳能学报, 2021, 42(3): 179-183.

巩亮, 韩东旭, 陈峥, 等. 增强型地热系统关键技术研究现状及发展趋势[J]. 天然气工业, 2022, 42(7): 135-159.

张宁, 赵阳升, 万志军, 等. 三维应力下热破裂对花岗岩渗流规律影响的试验研究[J]. 岩石力学与工程学报, 2010, 29(1): 118-123.

翟海珍, 魏国灵, 金光荣, 等. 裂隙展布特征对EGS采热影响的理论数值模拟研究[J]. 地球物理学进展, 2020, 35(2): 480-487.

刘汉青, 胡才博, 赵桂萍, 等. 利用热-孔隙流体耦合有限元数值模拟研究干热岩开发温度下降过程: 以青海共和盆地恰卜恰地区干热岩开发为例[J]. 地球物理学报, 2023, 66(7): 2887-2902.

陈必光, 宋二祥, 程晓辉. 二维裂隙岩体渗流传热的离散裂隙网络模型数值计算方法[J]. 岩石力学与工程学报, 2014, 33(1): 43-51.

单丹丹, 李玮, 闫铁, 等. 增强型地热系统采热性能评价: 以共和盆地恰卜恰地区干热岩储层为例[J]. 天然气工业, 2022, 42(10): 150-160.

ZHANG W, QU Z Q, GUO T K, et al.Study of the enhanced geothermal system(EGS) heat mining from variably fractured hot dry rock under thermal stress[J]. Renewable energy, 2019, 143: 855-871.

韩东旭, 张炜韬, 焦开拓, 等. 基于嵌入式离散裂缝模型的增强型地热系统热-流-力-化耦合分析[J]. 天然气工业, 2023, 43(7): 126-138.

HE R H, RONG G, TAN J, et al.Numerical evaluation of heat extraction performance in enhanced geothermal system considering rough-walled fractures[J]. Renewable energy, 2022, 188: 524-544.

宋国锋, 李根生, 宋先知, 等. 基于多目标的干热岩注采取热性能均衡优化方法[J]. 天然气工业, 2022, 42(4): 73-84.

LI X X, LI C Y, GONG W P, et al.Probabilistic analysis of heat extraction performance in enhanced geothermal system based on a DFN-based modeling scheme[J]. Energy, 2023, 263: 125674.

李馨馨, 李典庆, 徐轶. 地热对井系统裂隙岩体三维渗流传热耦合的等效模拟方法[J]. 工程力学, 2019, 36(7): 238-247.

GONG F C, GUO T K, SUN W, et al.Evaluation of geothermal energy extraction in enhanced geothermal system(EGS) with multiple fracturing horizontal wells (MFHW)[J]. Renewable energy, 2020, 151: 1339-1351.

YAO J, ZHANG X, SUN Z X, et al.Numerical simulation of the heat extraction in 3D-EGS with thermal-hydraulic-mechanical coupling method based on discrete fractures model[J]. Geothermics, 2018, 74: 19-34.

CHEN J L, JIANG F M.Designing multi-well layout for enhanced geothermal system to better exploit hot dry rock geothermal energy[J]. Renewable energy, 2015, 74: 37-48.

黄诗冰, 刘泉声, 程爱平, 等. 低温裂隙岩体水-热耦合模型研究及数值分析[J]. 岩土力学, 2018, 39(2): 735-744.

李鹏飞, 朱其志, 顾水涛, 等. 岩石类材料裂隙形成和扩展的相场方法模拟[J]. 工程力学, 2018, 35(3): 41-48.

CHEN S H, FENG X M, ISAM S.Numerical estimation of REV and permeability tensor for fractured rock masses by composite element method[J]. International journal for numerical and analytical methods in geomechanics, 2008, 32(12): 1459-1477.

THOVERT J F, MOURZENKO V V, ADLER P M.Percolation in three-dimensional fracture networks for arbitrary size and shape distributions[J]. Physical review E, 2017, 95(4-1): 042112.

孙致学, 徐轶, 吕抒桓, 等. 增强型地热系统热流固耦合模型及数值模拟[J]. 中国石油大学学报(自然科学版), 2016, 40(6): 109-117.

曲占庆, 张伟, 郭天魁, 等. 基于局部热非平衡的含裂缝网络干热岩采热性能模拟[J]. 中国石油大学学报(自然科学版), 2019, 43(1): 90-98.

单丹丹. 井筒传热与随机裂隙储层热流耦合数值模拟研究[D]. 大庆: 东北石油大学, 2021.

罗峰. 增强型地热系统和二氧化碳利用中的流动与换热问题研究[D]. 北京: 清华大学, 2015.

郭志鹏, 卜宪标, 李华山, 等. 基于热-流-化耦合作用的单井增强地热系统性能分析[J]. 化工进展, 2023, 42(2): 711-721.

LI X X, LI D Q, XU Y.Modeling the effects of microcracks on water permeability of concrete using 3D discrete crack network[J]. Composite structures, 2019, 210: 262-273.

阮杰, 张金龙, 张成辉, 等. 离散裂隙网络对岩体力学特性影响数值模拟研究[J]. 河北工程大学学报(自然科学版), 2021, 38(1): 40-46.

MONDAL D, HAN S J, SANG S X, et al.Application of artificial neural network to evaluate coalbed methane exploration potential: a case study from permian Longtan formation, Shuicheng, Guizhou[J]. Natural resources research, 2024, 33(2): 609-636.

张洪伟, 万志军,周长冰, 等. 干热岩高温力学特性及热冲击效应分析[J]. 采矿与安全工程学报, 2021, 38(1): 138-145.

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

考虑界面热阻效应的地埋管分层传热解析模型及解答

EXPERIMENTAL STUDY ON HEAT TRANSFER PERFORMANCE OF DIFFERENT TYPES OF BOREHOLE BURIED TUBE HEAT EXCHANGERS

FINITE HOLLOW CYLINDRICAL SURFACE SOURCE MODEL AND ANALYTICAL SOLUTION FOR VERTICAL BOREHOLE GROUND BURIED TUBE HEAT EXCHANGER

CRITICAL FREE-AREA RATIO DURING THE GEOTHERMAL SNOW-MELTING PROCESS ON PAVEMENT

Related Author

曾姝

闫振国

张正威

杨军

周祥运

胡世翔

张夏阳

高游

Related Institution

Earthquake Agency of Ningxia Hui Autonomous Region

Faculty of Engineering, China University of Geosciences

Ningxia Mining Geological Environment Monitoring and Ecological Restoration Innovation Team

Ningxia Survey and Monitor Institute of Land and Resources

Dongfang Electric Machinery Co., Ltd.

AI问答

⁰