TITLE:
Study on Formation Mechanism of Dumping Piles on Dumping Area Stability
AUTHORS:
Donghua Zhang, Naoya Inoue, Takashi Sasaoka, Hideki Shimada, Akihiro Hamanaka, Kikuo Matsui
KEYWORDS:
Open Pit Mine, Dumping Pile, Formation Mechanism, Site Investigation, Experiment
JOURNAL NAME:
Open Journal of Geology,
Vol.4 No.4,
April
21,
2014
ABSTRACT: Dumping areas represent a
stable hazard. To clarify the formation mechanism of dumping piles on dumping
area stability, an investigation in open pit mine was performed. Moreover,
experiments with gravel were conducted based on the research site conditions.
The geological conditions, dumping operation, and waste particle size
distribution were investigated in the Heidaigou open pit mine. Particle size
distribution, dumping height, dumping volume, and floor inclination were varied
to examine their effects on a single pile formation. The design of blasting can
be modified to make the particle size of waste smaller. The volume of the
bucket does not have a pronounced effect on dumping pile repose angle, capacity
of dumping pile, and dumping area stability. The smaller the floor inclination,
the better it is. Two measures are proposed to increase the kinetic force of
friction between waste material and floor surface. The interval distance,
dumping volume and dumping height were also varied to examine the interaction
between the formations of multiple piles. The dumping width should be decided
through optimization efficiency of bulldozer and dumping device in bucket wheel
excavator-belt-stacker dumping operation and dragline dumping operation.
Moreover, the volume of the bucket does not have a pronounced interaction
effect. In the dumping operation, the work amount of bulldozer decreases as
dumping pile increases. The design of the dumping operation must consider the
total efficiency of ground leveling operation and forming dumping the area.