Analysis and application of backfill mining in thin coal seams for preventing building damage

As coal resources trapped under surface buildings impede the efficient mining of coal seams and constrain the sustainable development of coal mines, a super-high-water backfill mining technique for preventing building damage was adopted. According to the established model of equivalent mining height...

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Main Authors:	Bai, Erhu, Guo, Wenbing, Guo, Miningjie, Lou, Gaozhong, Tan, Yi
Format:	Article
Language:	English
Published:	Penerbit Universiti Kebangsaan Malaysia 2019
Online Access:	http://journalarticle.ukm.my/14336/ http://journalarticle.ukm.my/14336/ http://journalarticle.ukm.my/14336/1/03%20Erhu%20Bai.pdf

id	ukm-14336
recordtype	eprints
spelling	ukm-143362020-03-03T07:46:01Z http://journalarticle.ukm.my/14336/ Analysis and application of backfill mining in thin coal seams for preventing building damage Bai, Erhu Guo, Wenbing Guo, Miningjie Lou, Gaozhong Tan, Yi As coal resources trapped under surface buildings impede the efficient mining of coal seams and constrain the sustainable development of coal mines, a super-high-water backfill mining technique for preventing building damage was adopted. According to the established model of equivalent mining height (EMH), the influence factors were obtained. Afterwards, a measurement to improve the backfill rate was analyzed based on the slurry fluidity. Meanwhile, the relationships between the backfill body compression and its influence factors were studied by numerical simulation. In this way, a more accurate EMH was obtained. To prove this trial practicable, the obtained EMH and the probability integral method were used to predict the surface movement and deformation of the C7401 panel. At the same time, a surface movement observation was set up to observe the mining influence on the surface ground and buildings. The comparison between the predicted and measured data indicated that they corresponded well with each other, the surface movement and deformation values were all controlled within grade I, which protected the surface buildings. Moreover, by applying the super-high-water backfill mining technique, not only building damage has been controlled within Grade I, but the impact on the ecological environment has been reduced also, such as surface subsidence, groundwater leakage and groundwater lowering, which is in harmony with the construction of green mines. The practical trial can provide a reference for mining under similar conditions and is vital for the sustainable development of the mining industry and economic growth. Penerbit Universiti Kebangsaan Malaysia 2019-09 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/14336/1/03%20Erhu%20Bai.pdf Bai, Erhu and Guo, Wenbing and Guo, Miningjie and Lou, Gaozhong and Tan, Yi (2019) Analysis and application of backfill mining in thin coal seams for preventing building damage. Sains Malaysiana, 48 (9). pp. 1823-1832. ISSN 0126-6039 http://www.ukm.my/jsm/malay_journals/jilid48bil9_2019/KandunganJilid48Bil9_2019.html
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Kebangasaan Malaysia
building	UKM Institutional Repository
collection	Online Access
language	English
description	As coal resources trapped under surface buildings impede the efficient mining of coal seams and constrain the sustainable development of coal mines, a super-high-water backfill mining technique for preventing building damage was adopted. According to the established model of equivalent mining height (EMH), the influence factors were obtained. Afterwards, a measurement to improve the backfill rate was analyzed based on the slurry fluidity. Meanwhile, the relationships between the backfill body compression and its influence factors were studied by numerical simulation. In this way, a more accurate EMH was obtained. To prove this trial practicable, the obtained EMH and the probability integral method were used to predict the surface movement and deformation of the C7401 panel. At the same time, a surface movement observation was set up to observe the mining influence on the surface ground and buildings. The comparison between the predicted and measured data indicated that they corresponded well with each other, the surface movement and deformation values were all controlled within grade I, which protected the surface buildings. Moreover, by applying the super-high-water backfill mining technique, not only building damage has been controlled within Grade I, but the impact on the ecological environment has been reduced also, such as surface subsidence, groundwater leakage and groundwater lowering, which is in harmony with the construction of green mines. The practical trial can provide a reference for mining under similar conditions and is vital for the sustainable development of the mining industry and economic growth.
format	Article
author	Bai, Erhu Guo, Wenbing Guo, Miningjie Lou, Gaozhong Tan, Yi
spellingShingle	Bai, Erhu Guo, Wenbing Guo, Miningjie Lou, Gaozhong Tan, Yi Analysis and application of backfill mining in thin coal seams for preventing building damage
author_facet	Bai, Erhu Guo, Wenbing Guo, Miningjie Lou, Gaozhong Tan, Yi
author_sort	Bai, Erhu
title	Analysis and application of backfill mining in thin coal seams for preventing building damage
title_short	Analysis and application of backfill mining in thin coal seams for preventing building damage
title_full	Analysis and application of backfill mining in thin coal seams for preventing building damage
title_fullStr	Analysis and application of backfill mining in thin coal seams for preventing building damage
title_full_unstemmed	Analysis and application of backfill mining in thin coal seams for preventing building damage
title_sort	analysis and application of backfill mining in thin coal seams for preventing building damage
publisher	Penerbit Universiti Kebangsaan Malaysia
publishDate	2019
url	http://journalarticle.ukm.my/14336/ http://journalarticle.ukm.my/14336/ http://journalarticle.ukm.my/14336/1/03%20Erhu%20Bai.pdf
first_indexed	2023-09-18T20:06:52Z
last_indexed	2023-09-18T20:06:52Z
_version_	1777407216744136704

Analysis and application of backfill mining in thin coal seams for preventing building damage

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