Sentence examples for pillar thickness from inspiring English sources
These design charts can be used for the design of crown pillar thickness with the depth of the working, taking into account the changes of the rock mass conditions in underground metal mine.
Finite element analysis was utilized to analyze the collapse of some of the roofs of the adjacent man-made cave dwellings carved in rock due to insufficient pillar thicknesses and to determine the minimum pillar thickness required between adjacent caves in the region for stability.
Nine different pillar thicknesses ranging from 0.1 to 0.93 m were analyzed.
Later in the 1960s, HBS was implemented to mine the coal pillar (seam thickness of 20 m) for a machine repair shop by the Shengli coal mine in the Fushun Mining Bureau.
In this work, SU-8 was patterned to have low aspect ratio cylindrical and square pillars with thickness of 45 μm and 75 μm.
The transducers consist of a piezoelectric layer driving waves into a silicon pillar with a thickness of 520 μ m.
Fully filled symbols indicate the length of the nanopillars, half-filled symbols indicate the total length of the pillars and the thickness of the nanoporous base layer, and unfilled symbols indicate the thickness of the nanoporous base layer in the absence of nanopillars.
We investigated the veneers of cliffs, the fracture density of the building rock, the distribution and dispersion of the fracture directions, direction distribution and dispersion of the giant grikes between the pillars, the layer thickness of the building rock, the size and dispersion of debris.
Researches or design engineers can use this equation as a guide to quantify the energy absorbance gain for a given pillar dimension and TSL thickness.
Recently, similar hidden defences were also found in D. magna exposed to Triops kairomones, revealing increased cuticle hardness, thickness and pillar diameter [ 21].
Material properties of ore body rock and thickness of crown pillars are varied and safety factors of pillars estimated.
