Impact of Water Erosion on Relief of Coal Rock Heaps. Reclamation Work

Abstract

There were presented the simulation grounds of ravines’ stages of development on waste heaps during open-pit coal mining within the territory of Central Siberia. There was established that on ideally designed horizontal surfaces of heap, reclaimed accordingly with State standards, in the spring time congregated large volumes of thawing water. On the waste heaps, piled by non coherent subsurface rocks, in places with the most settled horizontal surface of heap begins cascaded terrace outlet on the sites with more low altitude, whereby there is formed start gutting, evolved in time in ravine. Generation of ravines is the process in virtually unceasing and undermanaged. Under the influence of water erosion volume of ravine, as a rule, increased, herewith decreased area of reclaimed mining landscapes. During heaps destruction there is need repair, providing for substantive financial costs. Consequently, there is underpinned need of State standards revise for designing of work on mine reclamation of disturbed lands during open-pit mining.