METHOD OF SALT DEPOSIT MINING Russian patent published in 2003 - IPC

FIELD: methods of salt deposit mining by chamber system with roof rigid support. SUBSTANCE: method includes deposit opening, development and extraction of salt reserves by coaxial of chambers, formation of interchamber with their subsequent unloading by barrier combined pillars, marginal rock zones and brines in mine abandonment. Salt reserves are extracted by alternate chambers following the distributed geometrical system, with formation of interchamber pillars of same rigidity at all horizons. EFFECT: provided high intensity of stoping operations, stability of overlying rocks and ground surface with minimal construction of filling material. 1 dwg