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Research on Non-Pillar Coal Mining for Thick and Hard Conglomerate Roof
| Content Provider | MDPI |
|---|---|
| Author | Liu, Xiaoyu He, Manchao Wang, Jiong Ma, Zimin |
| Copyright Year | 2021 |
| Description | This article introduces a new non-pillar coal mining technology (i.e., Gob-side Entry Retaining by Roof Cutting (GERRC)) under the condition of thick and hard roofs. First, we theoretically analyzed the solution to the large suspension span of the thick and hard roof in coal mining. Three-Zone pre-split blasting design in non-pillar coal mining for thick and hard roofs was proposed, based on the principles of rock mechanics. After field experiments, the technology was successfully applied to the non-pillar coal mining of a huge thick conglomerate roof. This research supplements the non-pillar mining technology system. The proposed technologies and methods have strong applicability and have certain guiding significance for the safe and efficient mining of related coal mines. |
| Starting Page | 299 |
| e-ISSN | 19961073 |
| DOI | 10.3390/en14020299 |
| Journal | Energies |
| Issue Number | 2 |
| Volume Number | 14 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2021-01-07 |
| Access Restriction | Open |
| Subject Keyword | Energies Manufacturing Engineering Characterization and Testing of Materials Thick Conglomerate Roof Thick and Hard Roof Roof Cutting and Pressure Release Gob-side Entry Retaining Non-pillar Coal Mining Deep Hole Blasting Pre-split Blasting |
| Content Type | Text |
| Resource Type | Article |
