基于Pilot Point方法反演裂隙岩体参数化渗透结构

赵敬波; 潘跃龙; 李杰彪; 吴群; 刘羽; 季瑞利; 周志超

doi:10.3799/dqkx.2022.031

Volume 48 Issue 10

Oct. 2023

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Article Navigation > Earth Science > 2023 > 48(10): 3878-3895

Zhao Jingbo, Pan Yuelong, Li Jiebiao, Wu Qun, Liu Yu, Ji Ruili, Zhou Zhichao, 2023. Inverse Modeling of Parameterized Hydraulic Conductivity Field in a Fractured Medium Based on Pilot Point Method. Earth Science, 48(10): 3878-3895. doi: 10.3799/dqkx.2022.031

Citation:

Zhao Jingbo, Pan Yuelong, Li Jiebiao, Wu Qun, Liu Yu, Ji Ruili, Zhou Zhichao, 2023. Inverse Modeling of Parameterized Hydraulic Conductivity Field in a Fractured Medium Based on Pilot Point Method. Earth Science, 48(10): 3878-3895. doi: 10.3799/dqkx.2022.031

Citation:

Zhao Jingbo, Pan Yuelong, Li Jiebiao, Wu Qun, Liu Yu, Ji Ruili, Zhou Zhichao, 2023. Inverse Modeling of Parameterized Hydraulic Conductivity Field in a Fractured Medium Based on Pilot Point Method. Earth Science, 48(10): 3878-3895. doi: 10.3799/dqkx.2022.031

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Inverse Modeling of Parameterized Hydraulic Conductivity Field in a Fractured Medium Based on Pilot Point Method

doi: 10.3799/dqkx.2022.031

Zhao Jingbo^{1
,
,},
Pan Yuelong²,
Li Jiebiao¹,
Wu Qun²,
Liu Yu²,
Ji Ruili¹,
Zhou Zhichao^{1
,
,
,}

1.
CAEA Innovation Center for Geological Disposal of High Level Radioactive Waste, Beijing Research Institute of Uranium Geology, Beijing 100029, China
2.
China Nuclear Power Engineering Co., Ltd., Shenzhen 518000, China

Received Date: 2021-09-05
Available Online: 2023-10-31
Publish Date: 2023-10-25

Abstract

Abstract

For the underground engineering site in a fractured rock mass, the hydraulic conductivity is a critical factor influencing hydrogeological conditions and plays a pivotal role in the final assessment of site performance. This study focuses on the granite formation of nuclear facility site in the coastal area, China. It applied the Pilot Point calibration technique in conjunction with a 3D kriging interpolation method to establish a parameterized hydraulic conductivity field for the fractured medium. Besides, the inverse parameter estimation tool PEST for automated calibration and sensitivity analysis was employed. The results indicate that the simulated hydraulic heads were in a good agreement with the measured data in the steady condition, and well reproduced dynamic behavior of groundwater level with time. Notably, the hydraulic conductivity filed could be estimated more accurately around the boreholes and the parameter sensitivity was related with borehole location, borehole quantity and variogram range. Based on these findings, it could conclude that Pilot Point method could identify spatial difference of hydraulic conductivity filed in the fractured rocks. It is positive to further improve the groundwater flow prediction ability in the fracture medium.
- fractured rock,
- hydraulic conductivity filed,
- Pilot Point method,
- sensitivity analysis,
- hydraulic test with double packer equipment,
- hydrogeology

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References(48)

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Inverse Modeling of Parameterized Hydraulic Conductivity Field in a Fractured Medium Based on Pilot Point Method

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