Strata monitoring studies in blasting gallery panel during depillaring based on field instrumentation

A challenging task for mining professionals is to extract natural resources like coal from underground with utmost safety. The challenge becomes more when the thickness of coal seam is high. Blasting Gallery (BG) method of depillaring thick coal seam is one of the productive method with favourable economics, high production and productivity. In this method, stability of workings and easily cavability of goaf is very important for safely extraction of pillars, safety of men and machinery. In this paper, strata monitoring data of a blasting gallery panel is analyzed for the stability of pillars and workings in a Blasting Gallery panel during depillaring in specific geo-mining and working conditions of a underground mine in Southern part of India.