Quantifying the increase in adhesion strength of shotcrete applied to surfaces treated with high-pressure water.
Trans Soc Min Metal Explor 2003 Jan; 312:129-132
Research is currently being conducted at the Colorado School of Mines in the use of high-pressure water for scaling down loose rocks in underground mine openings. In addition to improved miner safety, the adhesion strength of shotcrete applied to rock surfaces treated with high-pressure water is also increased significantly, resulting in improved overall support capabilities of the shotcrete layer. Test results show an increase in adhesion strength by a factor of four on a concrete test wall cleaned with water at 21 MPa (3,000 psi) as compared to a surface cleaned at 0.7 MPa (100 psi).
Mining-industry; Mining-equipment; Safety-measures; Safety-monitoring; Safety-practices; Work-areas; Work-environment; Work-practices; Rock-mechanics; Engineering-controls; Control-technology; Control-methods; Ground-control; Underground-mining
Transactions of the Society for Mining, Metallurgy, and Exploration
Colorado School of Mines