Finite-difference based response surface methodology to optimize tailgate support systems in longwall coal mining

Automation in Longwall Coal Mining - A Review

Coal is an important fossil fuel and will also be for the next decades [1]. The only way to achieve the challenges faced by the coal industry is to reduce production costs by improving productivity. Improvement of productivity has become an important goal for today’s coal industry in the race to increase price competitiveness. In recent years, underground mining method is becoming popular becau...

An Innovative Longwall Mining Technology in Tangshan Coal Mine, China

In mining of inclined coal seams in Tangshan coal mine of Kailuan group, gateways on either end of a panel were both typically located along the floor and a gateway pillar between adjoining panels was left unmined between adjacent panels to ensure stability, thus forming a planar mining system. According to the practice, however, it turned out that this conventional mining system has long-stand...

Analysis of Strain Inhomogeneity in Vortex Extrusion using Finite Element Method and Response Surface Methodology

The effect of geometrical parameters involved in vortex extrusion (VE) die design, on AA1050 aluminium alloy processed by VE were investigated using finite element analysis (FEA) and response surface methodology (RSM). For this, VE die length (L), reduction in area (RA), twist angle , and position of control points in Beziers' formulation (C1) were considered as input parameters and strain inho...

Coordinating Between Medical Professions’ Tasks to Optimize Sub-Saharan Health Systems: A Response to Recent Commentaries

microleakage evaluation in regard to cavo-surface designs & treatments

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