Research Status of Underground Goaf Filling Technology in Solid Sylvite Mine

WANG Qizhou; HUANG Yushu; CHI Xiuwen; REN Gaofeng; ZHANG Congrui; LI Yang; LI Mei; YAN Dairong; LI Lifeng

doi:10.13779/j.cnki.issn1001-0076.2024.08.022

2025 Vol. 45, No. 1

Article Contents

Article navigation > Conservation and Utilization of Mineral Resources > 2025 > 45(1): 85-92

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WANG Qizhou, HUANG Yushu, CHI Xiuwen, REN Gaofeng, ZHANG Congrui, LI Yang, LI Mei, YAN Dairong, LI Lifeng. Research Status of Underground Goaf Filling Technology in Solid Sylvite Mine[J]. Conservation and Utilization of Mineral Resources, 2025, 45(1): 85-92. doi: 10.13779/j.cnki.issn1001-0076.2024.08.022

Citation:

WANG Qizhou, HUANG Yushu, CHI Xiuwen, REN Gaofeng, ZHANG Congrui, LI Yang, LI Mei, YAN Dairong, LI Lifeng. Research Status of Underground Goaf Filling Technology in Solid Sylvite Mine[J]. Conservation and Utilization of Mineral Resources, 2025, 45(1): 85-92. doi: 10.13779/j.cnki.issn1001-0076.2024.08.022

Research Status of Underground Goaf Filling Technology in Solid Sylvite Mine

1.
Key Laboratory of Green Utilization of Key non−metallic mineral Resources, Ministry of Education, Wuhan University of Technology, Wuhan 430070, Hubei, China
2.
School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, Hubei, China
3.
Hubei Key Laboratory of Mineral Resources Processing and Environment, Wuhan University of Technology, Wuhan 430070, Hubei, China

Received Date: 06 April 2024

Publish Date: 15 February 2025

Abstract

Abstract

Potassium salt as a strategic non−metallic mineral in China, its safe and efficient exploitation was directly related to national food security and economic and social stability. Aiming at the goaf left by underground mining and the solid−liquid tail waste generated by beneficiation, The characteristics of underground mining methods and filling methods of solid sylvite mines were summarized, besides generally introducing the cementation mechanism of different filling cementitious materials and the current research situation. The research directions covering cementitious material formula and proportion, mechanical properties of tailing−waste−colloid cement, and supporting technology of cementitious filling were clarified, so as to provide references for the potash mine developers to choose suitable mining methods, filling methods and solid−liquid tailing−waste−based filling materials. The analysis shows that the composite cementitious material with low dosage of magnesium chloride−oxygen cement, fly ash and additives is the key to realize the high efficiency and safety of solid potash underground mine which produces low tailing waste emission and low−cost of filling mining at the present stage.
- solid sylvite deposit /
- backfilling of goaf /
- cementitious material

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References

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