| Records |
| Author |
Külls, C. |
Title  |
Resolving patterns of groundwater flow by inverse hydrochemical modelling in a semiarid Kalahari |
Type |
Conference Article |
| Year |
2000 |
Publication |
Tracers and Modelling in Hydrogeology: TraM’2000: Proceedings of TraM’2000, the International Conference on Tracers and Modelling in Hydrogeology Held at Liège, Belgium, in May 2000 |
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262 |
Pages |
447 |
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IAHS Press |
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| Call Number |
THL @ christoph.kuells @ Kuells2000resolving |
Serial |
62 |
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Tröger, U.; Dias, C.L.; Guillaumon, J.R.; Iritani, M.A.; Külls, C.; Schuler, G. |
| Title |
Remarks and new data about the recharge of the Guarani Aquifer System |
Type |
Conference Article |
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2004 |
Publication |
XXXIII IAH Congress, Abstracts, IAH, Mexico |
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THL @ christoph.kuells @ Troeger2004remarks |
Serial |
59 |
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| Author |
Davila, P.; Külls, C. |
| Title |
Reliability of current CFC data for age dating of water |
Type |
Conference Article |
| Year |
2010 |
Publication |
EGU Geophysical Abstracts |
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Pages |
536 |
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THL @ christoph.kuells @ Davila2010reliability |
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49 |
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Külls, C. |
| Title |
Rekonstruktion hydrologischer Extreme in der Namibwüste |
Type |
Journal Article |
| Year |
2011 |
Publication |
Berichte der naturforschenden Gesellschaft zu Freiburg im Breisgau |
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101 |
Pages |
69-81 |
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THL @ christoph.kuells @ |
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71 |
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Wang, W.; Liang, X.; Niu, Q.; Wang, Q.; Zhuo, J.; Su, X.; Zhou, G.; Zhao, L.; Yuan, W.; Chang, J.; Zheng, Y.; Pan, J.; Wang, Z.; Ji, Z. |
| Title |
Reformability evaluation of blasting-enhanced permeability in in situ leaching mining of low-permeability sandstone-type uranium deposits |
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Journal Article |
| Year |
2023 |
Publication |
Nuclear Engineering and Technology |
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55 |
Issue |
8 |
Pages |
2773-2784 |
| Keywords |
Analytic hierarchy process-entropy method, Fuzzy mathematics method, Mechanical property, Mineral composition, Pore structure, Split Hopkinson pressure bar |
| Abstract |
It is essential to evaluate the blasting-enhanced permeability (BEP) feasibility of a low-permeability sandstone-type uranium deposit. In this work, the mineral composition, reservoir physical properties and rock mechanical properties of samples from sandstone-type uranium deposits were first measured. Then, the reformability evaluation method was established by the analytic hierarchy process-entropy weight method (AHP-EWM) and the fuzzy mathematics method. Finally, evaluation results were verified by the split Hopkinson Pressure Bar (SHPB) experiment and permeability test. Results show that medium sandstone, argillaceous sandstone and siltstone exhibit excellent reformability, followed by coarse sandstone and fine sandstone, while the reformability of sandy mudstone is poor and is not able to accept BEP reservoir stimulation. The permeability improvement and the distribution of damage fractures before and after the SHPB experiment confirm the correctness of evaluation results. This research provides a reformability evaluation method for the BEP of the low-permeability sandstone-type uranium deposit, which contributes to the selection of the appropriate regional and stratigraphic horizon of the BEP and the enhanced ISL of the low-permeability sandstone-type uranium deposit. |
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1738-5733 |
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THL @ christoph.kuells @ wang_reformability_2023 |
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194 |
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