Wet-Mix Shotcrete as a Material, Process, and Ground Control Component of a 21st Century Underground Mining Operation

Abstract

Wet-mix shotcrete continues to evolve in the North American underground mining industry on a variety of different fronts. State-of-the art shotcrete mix designs and the latest in chemical additives are combined in a holistic approach to suit custom requirements. Logistical challenges are being overcome through sophisticated delivery systems to accommodate the mine layout. Robotic equipment and application techniques are enhancing both the rate and quality of in-situ shotcrete placement. Combined, these factors make wet-mix shotcrete a safe, economical and efficient choice as a component of a modern ground control program, both outside of and within mining development cycles. This paper discusses the latest advancements in wet-mix shotcrete in mining applications including a specific treatment of earlier re-entry into shotcreted headings.