Loading...
Please wait, while we are loading the content...
Similar Documents
Highwall mining system with backfilling
| Content Provider | Scilit |
|---|---|
| Author | Matsui, K. Shimada, H. Sasaoka, T. Ichinose, M. Kubota, S. |
| Copyright Year | 2018 |
| Description | Highwall mining system is to extract coal with an auger machine or a continuous miner. With the highwall mining system, there are many factors that have to be considered. Major factors are the coal recovery and the stability of the highwall. A large amount of coal remains isolated and undeveloped as pillars due to previous indiscriminate mining operations performed by the use of an auger or a continuous miner. Therefore, highwall mining may cause the highwall instability and also remain a precious coal reserve undeveloped as pillars. Backfilling in the highwall mining would allow for a high coal extraction ratio while greatly reducing the threat of failure of the pillars and highwall and damage caused by subsidence at the surface. This paper describes the highwall mining system and the importance of the backfilling system in highwall mining and discusses the geotechnical and mining problems in highwall mining system by means of the non-linear finite element method. This chapter describes the highwall mining system and the importance of the backfilling system in highwall mining and discusses the geotechnical and mining problems in highwall mining system by means of the non-linear finite element method. Backfilling in the highwall mining would allow for a high coal extraction ratio while greatly reducing the threat of failure of the pillars and the highwall and damage caused by subsidence at the surface. Backfilling materials that are of concern to the mining industry can be broadly classified into the three categories: waste originating from coal mines, waste originating from coal burning power plants and waste originating from other industries. The confinement by backfilling and the infiltration of backfilling slurry content into the failure zone improve mechanical properties of the broken pillars. The most important consideration for backfilling is to establish the optimal backfilling system that does not obstruct the coal production. Book Name: Mine Planning and Equipment Selection 2000 |
| Related Links | https://content.taylorfrancis.com/books/download?dac=C2004-0-28217-4&isbn=9780203747124&doi=10.1201/9780203747124-63&format=pdf |
| Ending Page | 338 |
| Page Count | 6 |
| Starting Page | 333 |
| DOI | 10.1201/9780203747124-63 |
| Language | English |
| Publisher | Informa UK Limited |
| Publisher Date | 2018-05-08 |
| Access Restriction | Open |
| Subject Keyword | Book Name: Mine Planning and Equipment Selection 2000 Mining and Mineral Processing Waste Mining System Backfilling Extraction Ratio Coal Extraction High Coal Highwall Mining |
| Content Type | Text |
| Resource Type | Chapter |
