Sentence examples for multiple seam interactions from inspiring English sources

Past mining also gives rise to multiple seam interactions in some areas.

The overburden depth is responsible for the overall level of stress, but pillar design, multiple seam interactions, and/or mining activity can concentrate stresses in distinct locations.

On the other hand, longwalls work deeper seams today than they did 30 years ago, and multiple seam interactions are much more prevalent.

No multiple seam interaction was present in this instance.

This evaluation was intended to reinforce the influence of topographic changes, depth of cover, multiple-seam interactions, geological conditions, and mining geometry.

In multiple seam extractions it is also necessary to protect the overlying workable seams and minimise surface subsidence.

When pillar recovery is planned in multiple seams, it is critical to properly design the mining sequence and panel layout to minimize potential seam interaction.

For example, mining alternate panels far away from each other, or mining alternate panels in multiple seams is not common.

In multiple seams mining, the seam with relatively low gas content (protective seam) is often extracted prior to mining its overlying and/or underlying seams of high gas content and low permeability to minimize the risk of high gas emission and outbursts of coal and gas.

Numerical strain-softening models, representing various possible configurations for multiple seams in close proximity and multi-pass extraction within a thick coal seam, are run and the peak stress is calibrated against pillar strength determined by the empirical equation.

Instead of the traditional "top to bottom" coal mining sequence in multiple seams, the first mining seam (it is also often referred to as a protective seam) is so selected in the integrated technology that its mining can result in the deformation, de-stressing, enhanced permeability, and easy gas drainage of its overlying and underlying coal seams.