STOWAGE MATERIAL AND PROCESS OF ITS LAYING IN WORKED-OUT SPACE (VERSIONS) Russian patent published in 2003 - IPC

FIELD: mining industry, underground development of deposits of mineral wealth with filling of worked-out space. SUBSTANCE: stowage material includes crushed rock that forms laid rock mass and hardening solution injected into pores. Rock with granulometric composition ensuring formation of stowage material with porosity 7-15% after vibration laying is employed in the capacity of crushed rock. Process of laying of stowage material into worked-out space includes feed of crushed rock into worked-out space, its laying with formation of laid mass, installation of injectors in mass and injection of solidifying solution into pores of laid mass. Uniformly distributed vibration action is carried out simultaneously with laying of crushed rock in part of its volume to lay crushed rock mass with maximum possible coefficient of relative density of laying. Solidifying solution per each section can be selected depending on state of ore in roof and stressed state of mass in it. EFFECT: increased bearing capacity of laid mass, reduced consumption of solidifying solution and simplified technology of filling of worked-out space. 33 cl