ERECTION OF FILLING MASS AT WORKING OF DEPOSITS UNDER PERMAFROST CONDITIONS Russian patent published in 2015 - IPC E21F15/08 

FIELD: mining.

SUBSTANCE: claimed process comprises erection of retaining and filtering dam, erection of pulp duct, feed of filling pulp and water drain via drain openings in dams and rain pipes in soluble airtight shell. Simultaneously, cooled air is fed therein via drain openings in said dams located on the side opposite said of pulp feed. Note here that drain pipes are laid over the length of filling space and shaped to the spring. Floats are secured at the spring turn top part. Weights are secured at the spring turn bottom part. Spring maximum OD is taken to make not over 0.9h where h is the filling space height, m. Cooling air is fed intermittently.

EFFECT: shorter period of the filling pulp dewatering, higher strength of filling massif.

1 dwg