Influence of canopy ratio of powered roof support on longwall working stability-A case study

• 作 者: Sylwester Rajwa Tomasz Janosze
• 机 构: DepartmentofExtractionTechnologies,CentralMiningInstitute
• 出 处: 矿业科学技术学报:英文版
• 发表日期: 2019年4期
• 关键词: Coal MINING MODELLING Powered ROOF supports LONGWALL workings Safety STABILITY
• 基金项目: the Research Project:Productivity and Safety of Shield Support(PRASS III)-co-financed by European Commission-Research Fund for Coal and Steel(No.752504),Polish Ministry of Science and Higher Education

The case study describes longwall coal seam A in a hard coal mine,where longwall coal face stability loss and periodic roof fall occurrences had been registered.The authors have attempted to explain the situation based on in-situ measurements and observat