PROCESSO PARA A PREPARACAO DE UMA MASSA DE ENCHIMENTO DE VEIOS ESGOTADOS DE MINAS
摘要
<p>A void in a mine is backfilled by a backfill slurry comprising water, an inert filler, e.g. mine tailings, and a binder, e.g. cement, lime or slag, to which a gelling agent, e.g. sodium silicate, is added just before placement.</p>
