Classification and Design of Backfill Coal Mining Systems Based on Typical Engineering Cases

Backfill coal mining technology has drawn widespread attention due to its benefits of “controlling surface deformation and subsidence, reducing mining-induced disturbance in the stope, and recycling solid mine wastes”. However, the backfill coal mining technology is still progressing slowly in China...

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Main Authors: Pengfei Cui, Qiang Zhang, Kang Yang, Haonan Lv, Jinming Cao, Wei Wang
Format: Article
Language:English
Published: MDPI AG 2023-12-01
Series:Energies
Subjects:
Online Access:https://www.mdpi.com/1996-1073/16/24/8074
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author Pengfei Cui
Qiang Zhang
Kang Yang
Haonan Lv
Jinming Cao
Wei Wang
author_facet Pengfei Cui
Qiang Zhang
Kang Yang
Haonan Lv
Jinming Cao
Wei Wang
author_sort Pengfei Cui
collection DOAJ
description Backfill coal mining technology has drawn widespread attention due to its benefits of “controlling surface deformation and subsidence, reducing mining-induced disturbance in the stope, and recycling solid mine wastes”. However, the backfill coal mining technology is still progressing slowly in China. The geological environment of China’s mining areas is complex and highly diversified, and backfill coal mining is expected to fulfill different goals in a wide range of engineering scenarios. These facts explain the poor reproducibility of backfill coal mining projects. This study reviews the existing backfill coal mining systems in China. Based on findings from a survey of engineering cases, we summarize five types of new backfill coal mining methods classified by deployment style; namely, borehole grouting backfill, roadway backfill, borehole–roadway backfill, in situ backfill, and roadway-in-situ backfill. A total of 15 backfill coal mining methods falling into the above five categories are described. An engineering design workflow for backfill coal mining consisting of five steps is proposed; namely, identifying the targets of backfill, analyzing the feasibility of deploying the backfill system, comparing the engineering quantities of different engineering schemes, estimating the economic efficiency of backfill, and backfill performance tracking and monitoring. Real cases of backfill engineering design are analyzed to inform the fast and reasonable design of backfill strategy for specific working faces in certain coal mines.
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spelling doaj.art-4acc881b6776474a8d2250acd134a35b2023-12-22T14:06:01ZengMDPI AGEnergies1996-10732023-12-011624807410.3390/en16248074Classification and Design of Backfill Coal Mining Systems Based on Typical Engineering CasesPengfei Cui0Qiang Zhang1Kang Yang2Haonan Lv3Jinming Cao4Wei Wang5School of Mines, China University of Mining & Technology, Xuzhou 221116, ChinaSchool of Mines, China University of Mining & Technology, Xuzhou 221116, ChinaSchool of Mines, China University of Mining & Technology, Xuzhou 221116, ChinaSchool of Mines, China University of Mining & Technology, Xuzhou 221116, ChinaSchool of Mines, China University of Mining & Technology, Xuzhou 221116, ChinaSchool of Mines, China University of Mining & Technology, Xuzhou 221116, ChinaBackfill coal mining technology has drawn widespread attention due to its benefits of “controlling surface deformation and subsidence, reducing mining-induced disturbance in the stope, and recycling solid mine wastes”. However, the backfill coal mining technology is still progressing slowly in China. The geological environment of China’s mining areas is complex and highly diversified, and backfill coal mining is expected to fulfill different goals in a wide range of engineering scenarios. These facts explain the poor reproducibility of backfill coal mining projects. This study reviews the existing backfill coal mining systems in China. Based on findings from a survey of engineering cases, we summarize five types of new backfill coal mining methods classified by deployment style; namely, borehole grouting backfill, roadway backfill, borehole–roadway backfill, in situ backfill, and roadway-in-situ backfill. A total of 15 backfill coal mining methods falling into the above five categories are described. An engineering design workflow for backfill coal mining consisting of five steps is proposed; namely, identifying the targets of backfill, analyzing the feasibility of deploying the backfill system, comparing the engineering quantities of different engineering schemes, estimating the economic efficiency of backfill, and backfill performance tracking and monitoring. Real cases of backfill engineering design are analyzed to inform the fast and reasonable design of backfill strategy for specific working faces in certain coal mines.https://www.mdpi.com/1996-1073/16/24/8074backfill coal miningbackfill system deploymentbackfill engineering designborehole grouting backfillroadway backfillborehole–roadway backfill
spellingShingle Pengfei Cui
Qiang Zhang
Kang Yang
Haonan Lv
Jinming Cao
Wei Wang
Classification and Design of Backfill Coal Mining Systems Based on Typical Engineering Cases
Energies
backfill coal mining
backfill system deployment
backfill engineering design
borehole grouting backfill
roadway backfill
borehole–roadway backfill
title Classification and Design of Backfill Coal Mining Systems Based on Typical Engineering Cases
title_full Classification and Design of Backfill Coal Mining Systems Based on Typical Engineering Cases
title_fullStr Classification and Design of Backfill Coal Mining Systems Based on Typical Engineering Cases
title_full_unstemmed Classification and Design of Backfill Coal Mining Systems Based on Typical Engineering Cases
title_short Classification and Design of Backfill Coal Mining Systems Based on Typical Engineering Cases
title_sort classification and design of backfill coal mining systems based on typical engineering cases
topic backfill coal mining
backfill system deployment
backfill engineering design
borehole grouting backfill
roadway backfill
borehole–roadway backfill
url https://www.mdpi.com/1996-1073/16/24/8074
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AT haonanlv classificationanddesignofbackfillcoalminingsystemsbasedontypicalengineeringcases
AT jinmingcao classificationanddesignofbackfillcoalminingsystemsbasedontypicalengineeringcases
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