Sublevel caving mining causes surface deformation in three distinct zones parallel to the extracted deposit. Most of published research is focused on extent caved and fracture zones. The largest, continuous zone and, thus, influence mine its surroundings not yet fully documented. This study aimed at assessing caused by a steep iron ore deposit Norway. For this purpose, an innovative combination...

The ordovician limestone water inrush accident occurred during the excavation of 8228 working face in Tashan Coal Mine, Tongmei Group. On basis comprehensive geophysical exploration above and below well, order to find out development boundary flowing subsided column distribution characteristics broken body filled it, control by Grouting, boundary, influence zone, cementation fractured are found...

introduction spect projections are contaminated by scatter radiation, resulting in reduced image contrast and quantitative errors. backscatter constitutes a major part of the scatter contamination in lower energy windows. the current study is an evaluation of the effect of backscatter material on fwhm and image quality investigated by monte carlo simulation. materials and methods simind program...