应力加载对花岗岩粗糙裂隙渗透率影响规律

那金; 谢康路; 袁可涵; 袁益龙

doi:10.3799/dqkx.2022.082

Volume 49 Issue 5

May 2024

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Na Jin, Xie Kanglu, Yuan Kehan, Yuan Yilong, 2024. Effect of Stress Loading on Permeability of Granite Rough Fissure. Earth Science, 49(5): 1810-1820. doi: 10.3799/dqkx.2022.082

Citation:

Na Jin, Xie Kanglu, Yuan Kehan, Yuan Yilong, 2024. Effect of Stress Loading on Permeability of Granite Rough Fissure. Earth Science, 49(5): 1810-1820. doi: 10.3799/dqkx.2022.082

Na Jin, Xie Kanglu, Yuan Kehan, Yuan Yilong, 2024. Effect of Stress Loading on Permeability of Granite Rough Fissure. Earth Science, 49(5): 1810-1820. doi: 10.3799/dqkx.2022.082

Citation:

Na Jin, Xie Kanglu, Yuan Kehan, Yuan Yilong, 2024. Effect of Stress Loading on Permeability of Granite Rough Fissure. Earth Science, 49(5): 1810-1820. doi: 10.3799/dqkx.2022.082

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Effect of Stress Loading on Permeability of Granite Rough Fissure

doi: 10.3799/dqkx.2022.082

Na Jin^{1
,
,},
Xie Kanglu¹,
Yuan Kehan¹,
Yuan Yilong^{2
,
,}

1.
Hubei Key Laboratory of Petroleum Geochemistry and Environment (Yangtze University), Wuhan 430100, China
2.
Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun 130021, China

Received Date: 2022-03-03
Available Online: 2024-06-04
Publish Date: 2024-05-25

Abstract

Abstract

Selecting Indosinian granite in thermal storage layer of hot dry rock targets in the Gonghe basin, Qinghai Province, as the goal layer, using high pressure fluid displacement experiment device, the core fissure seepage and stress coupling loops and unloading test was carried out in this study. The influence law of stress loading process on granite rough fracture permeability was analyzed, and the evolution characteristics of granite fracture permeability in the experimental process were analyzed by numerical simulation technology. The results show that: (1) stress loading leads to deformation of fracture contact surface, which is the main factor affecting fracture seepage, and fracture permeability is negatively correlated with confining pressure. (2) The sensitivity of fracture permeability to different stress loading modes is different; (3) The mathematical empirical formula is obtained on the basis of the test, and the seepage evolution law in the granite fracture channel is analyzed by numerical simulation. The simulation results fit well with the experiment.
- granite,
- stress loading,
- fracture permeability,
- seepage and stress coupling,
- numerical simulation,
- geothermal energy

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References(50)

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Effect of Stress Loading on Permeability of Granite Rough Fissure

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