Optimization of roadway layout in ultra-close coal seams: A case study.
Most coal mines in China are currently mining close coal seams. Roadways in close coal seams, especially ultra-close coal seams, confronted difficulties in maintaining, including large deformation of the roadway, roof caving, rib spalling and floor heaving. This is mainly caused by the complicated s...
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doaj-cd14ced5e36f4f0985fe61f88a6450832020-11-25T02:33:49ZengPublic Library of Science (PLoS)PLoS ONE1932-62032018-01-011311e020744710.1371/journal.pone.0207447Optimization of roadway layout in ultra-close coal seams: A case study.Gang WuXinqiu FangHualin BaiMinfu LiangXiukun HuMost coal mines in China are currently mining close coal seams. Roadways in close coal seams, especially ultra-close coal seams, confronted difficulties in maintaining, including large deformation of the roadway, roof caving, rib spalling and floor heaving. This is mainly caused by the complicated stress and geological conditions, shattered roof, improper layout and support. To explore the issues mentioned above, the theoretical analysis was used to build a mechanical model and study the stress distribution under coal pillars, and FLAC3D modelling was adopted to build numerical models with different staggered distances. The optimal roadway layout was brought forward combining the result of numerical simulation and coal recovery rate. The field practice was carried out in the tailgate of panel 25301 to investigate the effect of the layout scheme. The results of field monitoring show that the roadway's stability is well maintained in the mining process.http://europepmc.org/articles/PMC6248966?pdf=render |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Gang Wu Xinqiu Fang Hualin Bai Minfu Liang Xiukun Hu |
spellingShingle |
Gang Wu Xinqiu Fang Hualin Bai Minfu Liang Xiukun Hu Optimization of roadway layout in ultra-close coal seams: A case study. PLoS ONE |
author_facet |
Gang Wu Xinqiu Fang Hualin Bai Minfu Liang Xiukun Hu |
author_sort |
Gang Wu |
title |
Optimization of roadway layout in ultra-close coal seams: A case study. |
title_short |
Optimization of roadway layout in ultra-close coal seams: A case study. |
title_full |
Optimization of roadway layout in ultra-close coal seams: A case study. |
title_fullStr |
Optimization of roadway layout in ultra-close coal seams: A case study. |
title_full_unstemmed |
Optimization of roadway layout in ultra-close coal seams: A case study. |
title_sort |
optimization of roadway layout in ultra-close coal seams: a case study. |
publisher |
Public Library of Science (PLoS) |
series |
PLoS ONE |
issn |
1932-6203 |
publishDate |
2018-01-01 |
description |
Most coal mines in China are currently mining close coal seams. Roadways in close coal seams, especially ultra-close coal seams, confronted difficulties in maintaining, including large deformation of the roadway, roof caving, rib spalling and floor heaving. This is mainly caused by the complicated stress and geological conditions, shattered roof, improper layout and support. To explore the issues mentioned above, the theoretical analysis was used to build a mechanical model and study the stress distribution under coal pillars, and FLAC3D modelling was adopted to build numerical models with different staggered distances. The optimal roadway layout was brought forward combining the result of numerical simulation and coal recovery rate. The field practice was carried out in the tailgate of panel 25301 to investigate the effect of the layout scheme. The results of field monitoring show that the roadway's stability is well maintained in the mining process. |
url |
http://europepmc.org/articles/PMC6248966?pdf=render |
work_keys_str_mv |
AT gangwu optimizationofroadwaylayoutinultraclosecoalseamsacasestudy AT xinqiufang optimizationofroadwaylayoutinultraclosecoalseamsacasestudy AT hualinbai optimizationofroadwaylayoutinultraclosecoalseamsacasestudy AT minfuliang optimizationofroadwaylayoutinultraclosecoalseamsacasestudy AT xiukunhu optimizationofroadwaylayoutinultraclosecoalseamsacasestudy |
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