分析煤矿采空区细粒矸石浆液扩散迂曲特征。

Analysis of characteristics of diffusion tortuosity of fine-grained gangue slurry in coal mine caving zone.

机构信息

School of Mines, China University of Mining and Technology, Xuzhou, 221116, China.

State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, Xuzhou, 221116, Jiangsu, China.

出版信息

Environ Sci Pollut Res Int. 2023 Oct;30(49):108201-108211. doi: 10.1007/s11356-023-29587-2. Epub 2023 Sep 25.

DOI:10.1007/s11356-023-29587-2

PMID:37749462

Abstract

The diffusion characteristics of fine-grained gangue slurry are significant for gangue consumption and ecological environment protection, especially in underground mines. Therefore, based on the theory of porous medium transportation, this paper establishes a 3D caving zone model, proposes methods for reconstructing, statistical, and analytical voids, characterizes the distribution of voids in the caving zone and the diffusion characteristics of gangue slurry, and explores the influencing factors of the distribution of voids and the diffusion characteristics of gangue slurry. The diffusion rate and depth of the gangue slurry were calculated using Df and D parameters. Finally, a fluidization filling method for gangue was proposed, providing a theoretical basis for solid waste treatment and environmental protection in coal mines.

摘要

细粒矸石浆的扩散特性对矸石消耗和生态环境保护具有重要意义，特别是在地下矿山。因此，本文基于多孔介质输运理论，建立了一个 3D 崩落区模型，提出了重构、统计和分析空隙的方法，描述了崩落区空隙的分布和矸石浆的扩散特性，并探讨了空隙分布和矸石浆扩散特性的影响因素。利用 Df 和 D 参数计算了矸石浆的扩散速率和深度。最后，提出了一种矸石流态化充填方法，为煤矿固体废物处理和环境保护提供了理论依据。