Quantifying coal pillar dam width and analyzing influencing factors in underground reservoirs of inclined coal seams

被引：0

作者：

Wu B. ^{[1
,2
]}

Cao Z. ^{[1
,2
]}

Yu L. ^{[3
]}

Li P. ^{[4
]}

Wang Y. ^{[5
]}

Zuo C. ^{[5
]}

机构：

[1] State Key Laboratory of Groundwater Protection and Utilization by Coal Mining, National Energy Group, Beijing

[2] National Institute of Low Carbon and Clean Energy, Beijing

[3] School of Mines, China University of Mining and Technology, Jiangsu, Xuzhou

[4] CHN Energy Shendong Coal Group Co Ltd, Shaanxi, Yulin

[5] School of Mechanics and Civil Engineering, China University of Mining and Technology-Beijing, Beijing

来源：

Caikuang yu Anquan Gongcheng Xuebao/Journal of Mining and Safety Engineering | 2024年 / 41卷 / 02期

关键词：

coal pillar dam; influencing factor; mining stress; theoretical calculation; underground reservoir;

D O I：

10.13545/j.cnki.jmse.2022.0527

中图分类号：

学科分类号：

摘要：

This paper conducted a comprehensive investigation into the factors influencing coal pillar dams in underground reservoirs of slowly inclined coal seams. The following tasks were accomplished: establishing a mechanical model for coal pillar dams, determining the strength division of coal pillar dams under complex stress environments, constructing an ideal elastic-plastic strain softening model for coal bodies, distinguishing the stages of the damage process of coal bodies, deriving a theoretical formula for determining the appropriate width of coal pillar dams, conducting an engineering application in LingXin coal mine to address the issue of determining the optimal size of coal pillar dams, and analyzing the impact of various factors on the theoretical width of coal pillar dams. The results revealed that the geological conditions, such as the thickness and burial depth of the coal seam where the underground reservoir is located, exerted a significant influence on the appropriate width of coal pillar dams. In comparison, factors related to water storage (e. g., water storage time, water storage height, and water source) during the operation of the coal mine's underground reservoir had a lesser impact. © 2024 China University of Mining and Technology. All rights reserved.

引用

页码：277 / 284

页数：7

共 24 条

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