EVALUATION OF DAMAGE RISK OF THE GROUND VIBRATION INDUCED BY BLASTING IN A QUARRY

2nd International Scientific Conference - SGEM2002, www.sgem.org, SGEM2002 Conference Proceedings/ ISBN: 954-918181-2, June 9-15, 2002, 365- 378pp

ABSTRACT

With the general trend toward larger blasts in mining, ground
vibration and air blast problems and complaints have significantly
increased. With increasing environmental constraints on the levels of
disturbance induced by blasting operations upon nearby residents, there is
an increasing need to be able to design cautious blasting with greater
precision. Therefore, determination of maximum amount of explosive per
delay for a certain distance especially in large blasts is of great importance
for the elimination of these environmental problems. Estimating of particle
velocity and other components of ground vibration with reliable
approaches will give important facilities to the blasters.
This paper presents the evaluation of damage risk of the ground
vibration induced by blasting, which was performed at Halımoru Limestone
Quarry which supplies a cement plant in Turkey. The blasting activities
caused increasing complaints of the neighbouring villages due to ground
vibration. In order to prevent the damage to the buildings located nearby
this site and to reduce these complaints, it was necessary to control the
blasting by estimating the level of vibration. Within the scope of the study,
for the prediction of the peak particle velocity and determining the slope of
the attenuation curve together with the maximum allowable charge per
delay by analyzing the damage risk for the test site, ground vibration
components were measured for 5 blast events using 4 different types
vibration monitors (2 White Mini-Seis, 1 Instantel Blastmate and 1 Instantel
Minimate Plus Models) considering the directions of the villages.