Proportioning experimental study on gravel and tailings cemented filling of a phosphorus mine

Xin Li; Lijie Guo; Guangsheng Liu; Wenyuan Xu

doi:10.1117/12.2638616

29 April 2022 Proportioning experimental study on gravel and tailings cemented filling of a phosphorus mine

Xin Li, Lijie Guo, Guangsheng Liu, Wenyuan Xu

Proceedings Volume 12255, 2022 International Conference on Optoelectronic Information and Functional Materials (OIFM 2022); 122552U (2022) https://doi.org/10.1117/12.2638616
Event: 2022 International Conference on Optoelectronic Information and Functional Materials (OIFM 2022), 2022, Chongqing, China

Abstract

A phosphate mine is located in Baokang County, Xiangyang County, Hubei Province. It is mined by roof cutting room pillar method with trackless equipment. After mining in recent years, the stoping of the mine room has been completed. At present, the roof and pillar of the mine room are unstable and joint fissures are developed. With the continuous destruction of the pillar, if no measures are taken, it will eventually lead to the caving of the goaf and the collapse of the surface, and the collapsed part will cut the upper fault, resulting in large-scale landslide and serious disaster. Therefore, the treatment of goaf should be carried out immediately. Based on the actual situation of the mine, the goaf will be treated with gravel tailings cemented filling, and determines the main proportioning parameters of gravel tailings cemented filling through analysis, calculation and proportioning test. The filling slurry with 78 % concentration, 2 sandcement ratio and 4 : 6 sand-stone ratio can meet the requirements from the aspects of viscosity, pumping and 28 d compressive strength.

Citation Download Citation

Xin Li, Lijie Guo, Guangsheng Liu, and Wenyuan Xu "Proportioning experimental study on gravel and tailings cemented filling of a phosphorus mine", Proc. SPIE 12255, 2022 International Conference on Optoelectronic Information and Functional Materials (OIFM 2022), 122552U (29 April 2022); https://doi.org/10.1117/12.2638616

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