Investigation of properties of injection solutions for reinforcing the embedment of cleaning chambers

Abstract

In the practice of development of mineral deposits there are many cases of application of combined development systems with excavation of chamber reserves and leaving temporary pillars. In this case, at deposits with relatively stable ores and rocks, as a rule, the chambers are mined by highly efficient systems with subsequent filling of the excavated space with dry backfill material - rock from field workings and overburden of the open pit. In the left inter-chamber and inter-storey pillars often remains up to 50-60% of the total reserves of the deposit, which are extracted by labor-intensive and low-performance systems (layer caving, with the station bracing and backfill, etc.)...