Experimental study on water bleeding characteristics of gangue powder-based cemented materials

ZHOU Xianli; WANG Jiale; LI Jie

doi:10.13347/j.cnki.mkaq.20231086

Safety in Coal Mines > 2024 > 55(4): 164-168. > DOI: 10.13347/j.cnki.mkaq.20231086

ZHOU Xianli, WANG Jiale, LI Jie. Experimental study on water bleeding characteristics of gangue powder-based cemented materials[J]. Safety in Coal Mines, 2024, 55（4）: 164−168. DOI: 10.13347/j.cnki.mkaq.20231086

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Experimental study on water bleeding characteristics of gangue powder-based cemented materials

1.
China Energy Group Yulin Energy Co., Ltd., Yulin 719400, China
2.
Work Safety Key Lab on Prevention and Control of Gas and Roof Disasters for Southern Coal Mines, Hunan University of Science and Technology, Xiangtan 411201, China
3.
China National Accreditation Service for Conformity Assessment, Beijing 100062, China

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Received Date: July 28, 2023
Revised Date: September 27, 2023

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Abstract

Abstract

In order to explore the water bleeding characteristics of gangue powder-based cemented filling materials, the influence of four factors: gangue powder-based mass concentration (A), cement content (B), fly ash content (C) and high water material content (D) on the water bleeding rate of cemented materials was studied by using range analysis and analysis of variance; the fitting formula of the influence of various factors on the water bleeding characteristics of gangue powder-based cementation filling materials was obtained. The results showed that the degree of influence on the water bleeding rate of gangue powder-based cemented filling materials based on range analysis was D>A>B>C, and showed that the influence on the water bleeding rate of materials based on variance analysis was D>B>A>C, and the water bleeding rate showed a downward with the increase of the mass concentration of gangue slurry, with the increase of cement content, it showed a trend of first decreasing and then increasing and then decreasing; with the increase of fly ash quality, it showed a trend of first decreasing and then stable; with the increase of high water, it showed a downward trend. High water content had the greatest influence on the water bleeding rate of materials, the mass concentration of gangue powder and cement quality had comparable effects on the water bleeding rate of materials, and fly ash content had little effect on the water bleeding rate of materials.
- gangue powder base,
- cemented filling materials,
- water bleeding characteristics,
- significance analysis,
- orthogonal test

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References

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Experimental study on water bleeding characteristics of gangue powder-based cemented materials