铀储层地质建模:揭示成矿机理和应对“剩余铀”的地质基础

焦养泉; 吴立群; 荣辉; 张帆; 乐亮; 陶振鹏; 孙钰函

doi:10.3799/dqkx.2018.229

Volume 43 Issue 10

Oct. 2018

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Article Navigation > Earth Science > 2018 > 43(10): 3568-3583

Jiao Yangquan, Wu Liqun, Rong Hui, Zhang Fan, Yue Liang, Tao Zhenpeng, Sun Yuhan, 2018. Geological Modeling of Uranium Reservoir: The Geological Foundation of Revealing the Metallogenic Mechanism and Solving 'Remaining Uranium'. Earth Science, 43(10): 3568-3583. doi: 10.3799/dqkx.2018.229

Citation:

Jiao Yangquan, Wu Liqun, Rong Hui, Zhang Fan, Yue Liang, Tao Zhenpeng, Sun Yuhan, 2018. Geological Modeling of Uranium Reservoir: The Geological Foundation of Revealing the Metallogenic Mechanism and Solving "Remaining Uranium". Earth Science, 43(10): 3568-3583. doi: 10.3799/dqkx.2018.229

Citation:

Jiao Yangquan, Wu Liqun, Rong Hui, Zhang Fan, Yue Liang, Tao Zhenpeng, Sun Yuhan, 2018. Geological Modeling of Uranium Reservoir: The Geological Foundation of Revealing the Metallogenic Mechanism and Solving "Remaining Uranium". Earth Science, 43(10): 3568-3583. doi: 10.3799/dqkx.2018.229

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Geological Modeling of Uranium Reservoir: The Geological Foundation of Revealing the Metallogenic Mechanism and Solving "Remaining Uranium"

doi: 10.3799/dqkx.2018.229

Jiao Yangquan^{1,2
,},
Wu Liqun^1,2,
Rong Hui^1,2,
Zhang Fan^1,2,
Yue Liang^1,2,
Tao Zhenpeng^1,2,
Sun Yuhan^1,2

1.
Faculty of Earth Resources, China University of Geosciences, Wuhan 430074, China
2.
Key Laboratory of Tectonics and Petroleum Resources of Ministry of Education, China University of Geosciences, Wuhan 430074, China

Received Date: 2018-05-29
Publish Date: 2018-10-20

Abstract

Abstract

By the geological modeling of outcrop and typical uranium deposit, it can be found that there are serious sedimentary heterogeneity and diagenetic heterogeneity in uranium reservoir, that is, the differences in the structure and material composition of the uranium reservoir sandstone. On the one hand, they can control uranium mineralization by restricting uranium metallogenic flow field and interlayer oxidation, on the other hand they may also affect the dissolution flow field and selecting solvent for in-situ leaching uranium. From the discussion of uranium metallogenic mechanism and the angle of improving the recovery rate, three categories and more than ten key elements of the geological model are selected, and the spatial distribution rules of each parameter are summarized. It is found that sedimentation and sedimentary environments are the main controlling factors for the formation and development of the depositional interfaces and components of the uranium reservoir, and the diagenesis would further enhance the complexity of the structure and composition of the uranium reservoir. It is pointed out that the epigenetic alteration, which is closely related to uranium mineralization, is preferentially developed in channel units with good physical properties but low reductant abundances, indicating that the formation and development of interlayer oxidation zones and uranium deposits are highly selective. By fully comparative analysis of the characteristics of the geological modeling between outcrop and underground uranium reservoir, the research ideas which can be used for reference are summarized and the common modeling parameters are selected, which provides the basis for guiding the underground modeling. It is believed that the underground geological modeling is very predictable by the constraints of getting parameters and the precision of parameters, but it has real practical value for ore prospecting and in-situ leaching uranium when the spatial distribution and mutual restriction of key parameters are systematically summed up on the deposit scale.
- geological modeling,
- uranium reservoir,
- metallogenic mechanism,
- in-situ leaching uranium,
- Zhiluo Formation,
- Ordos Basin,
- ore deposit

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References(71)

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