DETERMINATION OF OPTIMUM PARAMETERS OF DEVELOPMENT OF STOCKS OF 1 WESTERN BLOCK 6 NORTHEAST PANELS OF THE MINE OF LLC EUROCHEM-USOLSKIY POTASH PLANT
The technology of conducting mining operations on potash mines is defined by mining-and-geological conditions of the field. Need of ensuring water protective thickness for the purpose of prevention of break of water from the water bearing horizons in the developed space has significant effect on the choice of system of development of potash fields. On all mines of the Verkhnekamsky field of potassium-magnesium salts the chamber system of development with maintaining of a roof on rather rigid tape pillar allowing keeping continuity of VZT is applied. The main problem of working off stocks of one western block of the 6th northeast panel "EuroChem - the Usolye Potash Plant" (UKK) is poor power parting layer productive layers. A research objective is the analysis of possible flow diagrams of dredging of stocks of 1 western block of the 6th northeast panel and the choice of an optimum flow diagram. In this work calculations of expected term of a stable state of a roof of cameras, stability of a parting layer, extent of extraction of a mineral from a subsoil and also parameters of system of development for three options of working off of the chosen site are made, their comparison is made. By results of calculations, the most optimal variant of system of development of stocks of 1 western block of the 6th northeast panel was chosen.