Sentence examples for extraction height is from inspiring English sources
Typically, in the evaluation of surface subsidence under backfill, the term of effective extraction height is proposed (Singh and Singh 1985; Miao et al. 2010), which represents the actual thickness of voids transferred finally to the ground surface and is just part of the actual mining height.
The multivariate optimization data (Additional file 1) were further analyzed by linear regression with the instrument signal as the dependent variable, and it was found that the single important factor influencing the peak height is extraction speed.
The ratio of effective extraction height to actual mining height is called subsidence factor under backfill.
where S is the strength of pillar, σ c is the compressive strength of one 2.5 cm cube of coal (MPa), h is the extraction height (m), H is the depth of cover (m) and W is the pillar width (m).
Maximum height is 117 cm.
For understanding the extraction process, as shown in Figure 3, we give the total energy varying with the height of the manipulated atom relative to the bottom of the slab when the tip height is fixed at different heights.
"His height is only 191cm (6ft 3in).
