METHOD FOR PIT PROTECTION AGAINST UNDERGROUND WATER INFLOWS

摘要

FIELD: mining, particularly mining and pit protection against underground water inflow in the case of open-pit kimberlite pipe and other mineral deposits development in subpermafrost horizon. ^ SUBSTANCE: method involves discharging water initially contained in deposit section to be developed and precipitation water from said deposit section; drilling injection wells around kimberlite pipe perimeter and performing explosions through regular system from pit bottom to create joined subvertical annular and subhorizontal rock fissured zones which have uniform fissures; supplying plugging materials therein and creating joined solid watertight diaphragms shaped as integral cups. ^ EFFECT: possibility to create watertight diaphragm, which protects deposit section to be developed against underground water ingress.