NIOSHTIC-2 Publications Search

Backfill properties of total tailings.

Authors
Boldt-CMK; Mcwilliams-PC; Atkins-LA
Source
MISSING 1989; :1-21
Link
NIOSHTIC No.
10007055
Abstract
This U.S. Bureau of Mines report presents a study of three typical tailings samples as potential cemented backfill in underground mines. The testing series was unique in that the pulp densities of the samples were all above 75 pct solids. Test results included dry density; slump; percent settling after 28 days of curing; tensile strength after 28, 120, and 180 days of curing; and unconfined compressive strengths after 7, 28, 120, and 180 days of curing. The physical properties of the various test mixtures were further analyzed using linear and nonlinear statistical methods to produce correlations and mathematical equations. Physical properties were used to determine the influence of mix additives and as input for numerical modeling studies of backfill. The mathematical relations were used as a predictive tool in determining the suitability of various materials as backfill.
Keywords
Mining; Underground mines; Tensile strength; Compressive strength; Physical properties; Statistical analysis; Mathematical models
Publication Date
19890101
Document Type
IH; Report of Investigations
Fiscal Year
1989
Identifying No.
RI 9243
NIOSH Division
SRC
Source Name
MISSING
State
WA
Page last reviewed: April 12, 2019
Content source: National Institute for Occupational Safety and Health Education and Information Division