TY  - JOUR
T1  - Study of Mechanical Loosening of Rocks using Highly Powerful Bulldozer:
Example of Quarries of Construction Materials
AU - Ligotsky, Dmitry Nikolaevich AU - Mironova, Kristina Vladimirovna 
JO  - Research Journal of Applied Sciences
VL  - 13
IS  - 3
SP  - 225
EP  - 228
PY  - 2018
DA  - 2001/08/19
SN  - 1815-932x
DO  - rjasci.2018.225.228
UR  - https://makhillpublications.co/view-article.php?doi=rjasci.2018.225.228
KW  - Bulldozer
KW  -ripper
KW  -rock
KW  -mineral deposit
KW  -seismic velocity
KW  -layered excavation
AB  - This study provides the results of a study on mechanical loosening using the bulldozers of different
capacity. Creation of powerful and super-powerful bulldozers and improvement of the designs of modern
rippers over the past 5 years has significantly expanded the scope of mechanical loosening which is now
considered as one of highly efficient production processes in open mining. In order to improve the quality of
mined raw materials and minimize their losses, the schemes with the involvement of rippers like layered rock
excavation and with the creation of intermediate warehouses, etc. are used successfully. In Russia and abroad,
progressive manufacturing of rippers is explained by a number of advantages in comparison with the existing
methods of loosening. In open-pit mining, the rippers allow to eliminate some of the shortcomings inherent in
drilling and blasting such as seismic effect and damaging effect of rock fragments during projection,
significantly reduce the cost of loosening by more than 1.5-2 times as well as to improve work safety and
capacity.
ER  -