Technology of Backfill Preparation Based on Cement-and-Slag Binder in Orlov Mine

Крупник Леонид Андреевич, Yu. N. Shaposhnik, S. N. Shaposhnik, Gulnur Nurshaiykova, Zukhra TUNGUSHBAYEVA

2017

Data confidence 70 medium

How this score is calculated

It is built from checkable properties of the record itself: whether the article has a DOI, how many independent sources confirmed its data, whether the required fields are filled in, and how recent the latest confirmation is. Disagreement between sources and a missing identifier lower it. A value of 80 or above means the record was published without further checking; 60 to 79 means it is published at reduced confidence, with a manual check advisable. A record verified by an editor by hand is never pushed below 90 by a recalculation. This scores our data about the article, not the article itself.

Abstract

Geological characteristics of ore and enclosing rock mass at Orlov deposit, including Severnoe body of Novaya ore shoot, are given. The ore is extracted by underground method, with slicing and roomand- pillar, and sublevel caving. The technology of backfill preparation based on cement–slag binder is evaluated. After lab experimentation, the rational compositions of the backfill have been developed for Orlov Mine. It is found that activity of granular blast-furnace slag is conditioned by chemical composition, structure and, to a wide extent, by grinding fineness (specific surface). The technical-and-economic assessment of the new technology of backfill preparation has been carried out.