[篇名 ] 40kW pitch & flap type wind turbine generator system, [ 篇名 ] A design and performance prediction of shrouded wind turbine with brimmed-diffuser, [ 篇名 ] A framework for dynamic and aeroelastic analysis ...[篇名 ] 40kW pitch & flap type wind turbine generator system, [ 篇名 ] A design and performance prediction of shrouded wind turbine with brimmed-diffuser, [ 篇名 ] A framework for dynamic and aeroelastic analysis of horizontal axis wind turbines, [篇名] A frequency domain approach to wind turbines for flicker analysis, [ 篇名 ] A hybrid power system with using alternative energy facilities in isolated island, [ 篇名 ] A neuro-fuzzy model for the control operation of a wind-diesel-battery hybrid power system, [ 篇名 ] A new maximum power point tracking control scheme for wind generation, [篇名] A new power stabilization control system based on making use of mechanical inertia of a variable-speed w ind-turbine for stand-alone wind-diesel applications, [篇名 ] A study of a wind farm power system, [ 篇名 ] A STUDY OF STRAIGHT WING VERTICAL AXIS WIND TURBINE GENERATION SYSTEMS (A PEFORMANCE CALCULATION ABOUT STRAIGHT WING VERTICAL AXIS WIND TURBINE), [篇名] Acoustic Emission Monitoring of Field Tests of an Operating Wind Turbine, [ 篇名 ] Acoustic emission monitoring of small wind turbine blades, [ 篇名 ] Aero-acoustic computations of wind turbines, [ 篇名 ] Aerodynamic Loads on a Horizontal Axis Wind Turbine Rotor Exerted by Turbulent Inflow.展开更多
For circumstances of medium-embedding depth and medium-hard surroundings in Jining No.2 Colliery, Yanzhou Group, by using software RFPA2D to simulate the process of overburden fracture, studied the overburden separati...For circumstances of medium-embedding depth and medium-hard surroundings in Jining No.2 Colliery, Yanzhou Group, by using software RFPA2D to simulate the process of overburden fracture, studied the overburden separation which was caused by working face exploitation, its fracture characteristics and the isolated island coalface（IIC） formation systematically in comparison method. After the recovery of the IIC, the surrounding separation areas which lied above the working face and bilateral goaved respectively form a connected region, a region that is like a saddle with low middle （35 times） and high sides. The top boundary line of the separation area is an arc. Then the fracture rise rapidly to 28 times of working thickness; while it is smaller （only 8-17 times recovery height） when extracting bilaterally, though the fracture plane both are in shape of an unsymmetrical trapezium. As the recovery of IIC makes side recoveries change from insufficiency to sufficiency, the consequentially rapid change of characteristics of overburden separation and fracture would enhance the representation degree of mining pressure of IIC.展开更多
文摘[篇名 ] 40kW pitch & flap type wind turbine generator system, [ 篇名 ] A design and performance prediction of shrouded wind turbine with brimmed-diffuser, [ 篇名 ] A framework for dynamic and aeroelastic analysis of horizontal axis wind turbines, [篇名] A frequency domain approach to wind turbines for flicker analysis, [ 篇名 ] A hybrid power system with using alternative energy facilities in isolated island, [ 篇名 ] A neuro-fuzzy model for the control operation of a wind-diesel-battery hybrid power system, [ 篇名 ] A new maximum power point tracking control scheme for wind generation, [篇名] A new power stabilization control system based on making use of mechanical inertia of a variable-speed w ind-turbine for stand-alone wind-diesel applications, [篇名 ] A study of a wind farm power system, [ 篇名 ] A STUDY OF STRAIGHT WING VERTICAL AXIS WIND TURBINE GENERATION SYSTEMS (A PEFORMANCE CALCULATION ABOUT STRAIGHT WING VERTICAL AXIS WIND TURBINE), [篇名] Acoustic Emission Monitoring of Field Tests of an Operating Wind Turbine, [ 篇名 ] Acoustic emission monitoring of small wind turbine blades, [ 篇名 ] Aero-acoustic computations of wind turbines, [ 篇名 ] Aerodynamic Loads on a Horizontal Axis Wind Turbine Rotor Exerted by Turbulent Inflow.
文摘For circumstances of medium-embedding depth and medium-hard surroundings in Jining No.2 Colliery, Yanzhou Group, by using software RFPA2D to simulate the process of overburden fracture, studied the overburden separation which was caused by working face exploitation, its fracture characteristics and the isolated island coalface（IIC） formation systematically in comparison method. After the recovery of the IIC, the surrounding separation areas which lied above the working face and bilateral goaved respectively form a connected region, a region that is like a saddle with low middle （35 times） and high sides. The top boundary line of the separation area is an arc. Then the fracture rise rapidly to 28 times of working thickness; while it is smaller （only 8-17 times recovery height） when extracting bilaterally, though the fracture plane both are in shape of an unsymmetrical trapezium. As the recovery of IIC makes side recoveries change from insufficiency to sufficiency, the consequentially rapid change of characteristics of overburden separation and fracture would enhance the representation degree of mining pressure of IIC.
