Skip directly to search Skip directly to A to Z list Skip directly to page options Skip directly to site content

NIOSHTIC-2 Publications Search

Search Results

Control of Airblast and Excessive Ground Vibration from Blasting by Use of Efficient Stemming.

Authors
Konya-CJ; Skidmore-DR; Otuonye-FO
Source
For Reference Only At Bureau Libraries :199 pages
Link
NIOSHTIC No.
10003284
Abstract
The objective of this study was to determine the relationships between borehole diameter and efficacious stemming type and length for a range of explosive pressures. A preferred material type and size was obtained after a detailed analysis of the data on minimum stemming lengths for retention acquired for limestone aggregate, crushed gravel aggregate, and Ottawa and river sands. Variables including the size, shape, and cohesive properties between the stemming particles and between stemming material and borehole walls were evaluated along with the strength of the rock. The study suggests that proper selection of stemming rock type and size distribution can reduce necessary stemming length, airblast levels, and ground vibration levels. Consequently, breakage can be improved and reductions realized for airblast, flyrock, and ground vibration.
Publication Date
19810101
Document Type
CP; Final Contract Report;
Fiscal Year
1981
NTIS Accession No.
NTIS Price
Identifying No.
OFR 8-84
NIOSH Division
WO;
Source Name
For Reference Only At Bureau Libraries
State
OH;
Performing Organization
Ohio State University
TOP