SIGNAL PROCESSING FOR IN-SEAM SEISMIC BASED VOID
Underground coal mining is often carried out in the vicinity of abandoned mine voids filled with hazardous air or water. The aim of this research was to study the problem of underground coal mine void detection by using the in-seam seismic (ISS) technique. This technique refers to methods that utilize artificially generated channel waves trapped inPlough system for low thickness coal seams - Mineral,,The job of a plough system in underground mining can be described in a nutshell as “eating through coal at a depth of 1300 m”. In 2015, a new Cat GH 800 B will be put into operation for RAG Anthrazit Ibbenbüren GmbH, a subsidiary of RAG AG, in Germany’s northernmost coal mine, in Ibbenbüren, and there to cut and extract the around 1-m-thick coal seam.Mining - Wikipedia,Mining is the extraction of valuable minerals or other geological materials from the Earth, usually from an ore body, lode, vein, seam, reef or placer deposit.These deposits form a mineralized package that is of economic interest to the miner. Ores recovered by mining include metals, coal, oil shale, gemstones, limestone, chalk, dimension stone, rock salt, potash, gravel, and clay.