Technological Adaptation of Internal Dumping to the Operating Mode of Open Pit when Developing Inclined and Steeply Dipping Coal Seams Strata

With surface mining of inclined and steeply dipping coal deposits, the so-called deeping longitudinal methods with a gradual deepening from to final depth are widely spread, while orienting front along strike line seams (strata). When using such methods, volumes internal dumping limited or completely absent; there is peak-like increase in overburden transportation distance, land resources disturbing proceeds at progressive pace. In this regard, it obvious that an important production task find technological solutions develop deposits reduce environmental hazard resource conservation by placing mined-out space reducing area for external dumps earth's surface. If not foreseen present time, then all mines coming decades will be their own overburden, further development problematic.