微观-宏观相互作用致煤田地热开采效率演化综合评估

韩冬; 杨乐; 温凯; 焦美丽; 陈付国; 高永伟

doi:10.19912/j.0254-0096.tynxb.2024-1368

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太阳能学报 ›› 2026, Vol. 47 ›› Issue (4) : 504-510. DOI: 10.19912/j.0254-0096.tynxb.2024-1368

微观-宏观相互作用致煤田地热开采效率演化综合评估

韩冬¹, 杨乐¹, 温凯¹, 焦美丽², 陈付国², 高永伟²

作者信息 +

COMPREHENSIVE ASSESSMENT OF EVOLUTION OF GEOTHERMAL EXPLOITATION EFFICIENCY IN COALFIELDS CAUSED BY MICRO-MACRO INTERACTIONS

Han Dong¹, Yang Le¹, Wen Kai¹, Jiao Meili², Chen Fuguo², Gao Yongwei²

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文章历史 +

摘要

针对煤田地热储层开采中裂隙非线性分布导致流体运移难以准确定量评估难题，提出一种改进的分形理论，采用两个创新的分形参数（裂隙分形维数D_f、裂隙最大长度I_max）来定量表征裂隙结构，并将改进的分形理论应用于复杂热-流-固耦合作用下的地热储层开采。研究结果表明，提出的结构参数能较好地表征地热开采过程中的微观-宏观相互作用。地热开采效率与储层分形维数D_f和裂隙最大长度I_max呈正比，地热岩温度与D_f和I_max也呈正比。

Abstract

This study proposes an interdisciplinary geothermal exploitation model. An improved fractal theory suitable for geothermal reservoirs is presented, utilizing two innovative fractal parameters （fractal dimension of fractures D_f and maximum length of fractures I_max） to quantitatively characterize fracture structures. The improved fractal theory is then applied to complex thermal-flow-solid coupling in geothermal reservoir exploitation. The research results demonstrate that the proposed structural parameters effectively characterize micro-macro interactions during geothermal exploitation. The efficiency of geothermal exploitation is directly proportional to the fractal dimension D_f and the maximum length of fractures I_max,while the geothermal rock temperature is also proportional to D_f and I_max.

导出引用

韩冬, 杨乐, 温凯, 焦美丽, 陈付国, 高永伟. 微观-宏观相互作用致煤田地热开采效率演化综合评估[J]. 太阳能学报. 2026, 47(4): 504-510 https://doi.org/10.19912/j.0254-0096.tynxb.2024-1368

Han Dong, Yang Le, Wen Kai, Jiao Meili, Chen Fuguo, Gao Yongwei. COMPREHENSIVE ASSESSMENT OF EVOLUTION OF GEOTHERMAL EXPLOITATION EFFICIENCY IN COALFIELDS CAUSED BY MICRO-MACRO INTERACTIONS[J]. Acta Energiae Solaris Sinica. 2026, 47(4): 504-510 https://doi.org/10.19912/j.0254-0096.tynxb.2024-1368

中图分类号： TD325

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