DefinePK

Abstract

The Yakovlevsky iron ore deposit is one of the largest discovered deposits of high quality ore with the content of pure iron in the ore up to 70% and low content of harmful impurities (sulfur, phosphorus, etc.). The deposit is characterized by complex hydrogeological and mining conditions. The steep thick deposit is represented by (up to 50%) loose and semi-loose ores with the ultimate strength for uniaxial compression between 0.3 and 3 MPa and the presence of high-pressure aquifers. The paper considers the structural peculiarities of the ore deposit and enclosing rocks of the Yakovlevsky deposit of rich iron ores (RIO). Mine workings and interfaces stability observation data have been shown. The recommended parameters of fiberglass roof bolting for mine workings under the filling mass for the conditions of the Yakovlevsky deposit have been justified.