Next Article in Journal
Simulation Models to Size and Retrofit District Heating Systems
Previous Article in Journal
Diurnal Thermal Behavior of Photovoltaic Panel with Phase Change Materials under Different Weather Conditions
Article Menu
Issue 12 (December) cover image

Export Article

Open AccessTechnical Note
Energies 2017, 10(12), 2023; https://doi.org/10.3390/en10122023

A New Thin Seam Backfill Mining Technology and Its Application

1
College of Mining and Safety Engineering, Shandong University of Science and Technology, Qingdao 266590, China
2
State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao 266590, China
3
Graduate School of Engineering, Nagasaki University, Nagasaki 852-8521, Japan
4
China Coal Research Institute, Beijing 100013, China
*
Author to whom correspondence should be addressed.
Received: 20 October 2017 / Revised: 20 November 2017 / Accepted: 27 November 2017 / Published: 1 December 2017
View Full-Text   |   Download PDF [14017 KB, uploaded 1 December 2017]   |  

Abstract

Backfill mining is an effective way to control ground subsidence and govern gangue. To solve the problem of thin coal seam mining under villages, a new thin seam backfill mining technology was proposed. This paper investigated a reasonable proportion of filling materials by experiments, designed the filling system and introduced key technologies for thin seam working face filling. Finally, an industrial test of thin seam backfill mining technology was carried out in the C1661 working face, Beixu Coal Mine. The results show that the developed filling material meets both the pumping liquidity and strength requirements of the filling body during the early and late stages. The design and equipment selection of the paste filling system were reasonable. By using the key technologies for thin seam working face filling, the time needed for working face filling, the connection and disconnection of the filling pipeline and gob-side entry retaining were all greatly shortened. The labor intensity of the workers was reduced, and the mechanization level of the mine was improved. A fill mining length of 480 m was successfully completed. With effective roof subsidence control, the ground subsidence can be reduced, and good results can be achieved. This study can contribute to the development of backfill mining in thin coal seams. View Full-Text
Keywords: thin seam; backfill mining; filling material; filling system; filling technology thin seam; backfill mining; filling material; filling system; filling technology
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Luan, H.; Jiang, Y.; Lin, H.; Wang, Y. A New Thin Seam Backfill Mining Technology and Its Application. Energies 2017, 10, 2023.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Energies EISSN 1996-1073 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top