Material properties affecting the stability of a 50-year-old rock dump in an active mine.
NIOSH 1999 Dec; :1-28
Material properties affecting slope stability were measured in a large 50-year-old, partially consolidated rock dump located in an active open-pit mine. Field tests included single-ring infiltration and density. In addition, a nuclear depth-moisture gauge was used to measure water content in six stainless-steel-cased drillholes on the crest and an upper bench of the rock dump. Precipitation, evaporation, wind speed and direction, and temperature data were collected at a weather station installed on the dump's crest. Laboratory tests included particle-size distribution, specific gravity, Atterberg limits, and water content. By measuring material properties of a rock dump presumed to be stable, the safety of miners working on or at the toe of old rock dumps constructed of similar material and located in a similar climate can be assessed.
Mining-industry; Excavation; Waste-disposal; Waste-treatment; Soil-analysis; Structural-analysis; Laboratory-testing; Rock-dump; Excavation-equipment; Physical-properties; Materials-testing; Weight-measurement; Measurement-equipment; Analytical-processes; Testing-equipment; In-situ-density; Water-analysis; Particle-size-distribution
Numbered Publication; Report of Investigations
NTIS Accession No.
DHHS (NIOSH) Publication No. 2000-110; RI-9651
Intervention Effectiveness Research; Work Environment and Workforce
National Institute for Occupational Safety and Health