Research on Pressure-Relief Effort of Mining Upper-Protective Seam on Protected Seam
โ Scribed by Wu Xiang-Qian; Dou Lin-Ming; Lv Chang-Guo; Cao An-Ye; Zhang Ming-Wei
- Book ID
- 119355048
- Publisher
- Elsevier
- Year
- 2011
- Tongue
- English
- Weight
- 342 KB
- Volume
- 26
- Category
- Article
- ISSN
- 1877-7058
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Numerical simulations and field tests were used to investigate the changes in ground stress and deformation of, and gas flow from, a protected coal seam under which an extra-thin coal seam was drilled. The geological conditions were: 0.5 meter mining height, 18.5 meter coal seam spacing and a hard l
Based on nonlinearity contact theory and the geological structure of the Xieqiao Coal Mine in the newly developed Huainan coal field, rock movements, mining fissures and deformation of overlying strata were simulated by using the interface unit of FLAC3D to evaluate the pressure-relief gas drainage