NDLI: The Design of the Large Blastholes Pattern by Analyzing of Fragmentation of Blasted Rocks in Sarcheshmeh Copper Mine

Content Provider	Springer Nature Link
Author	Hosseini, Mehdi Namvar, Zahra Naderi
Copyright Year	2016
Abstract	Drilling and blasting are the main excavation operations in open pit mines. Proper fragmentation of blasted rocks is one of the main features of a successful drilling and blasting operation. In this study, 12 explosive events in the phyllic and potassic zone of Sarcheshmeh Copper Mine were analyzed. The common image analysis was used to investigate fragmentation of blasted rocks. The aim of the present study was to provide a blasting pattern for large holes (10.5″) and to study rock fragmentation by this blasting pattern. In addition to reduced excavation costs, the use of large blastholes will increase the production rate. GoldSize software was used to analyze rock fragmentation. The software was calibrated using the results of screen analysis on two samples taken from potassic and phyllic zones. According to size distribution curves of fragmented rocks, over 97% of rocks obtained from the 6, 8, 9 and 9 7/8″ blastholes were smaller than 20.32 cm. As a result, they passed through the crusher outlet. The burden value for the sulfur and waste regions was 8 and 7 m, respectively. A hole spacing of 10 and 9.5 m between the holes was proposed for the sulfur and waste regions, respectively. The size distribution curves of the rocks fragmented by large blastholes were obtained by image analysis. The results showed that the size distribution curve of the large blastholes was fitted to that obtained for the 9 7/8″ blasthole.
Starting Page	395
Ending Page	402
Page Count	8
File Format	PDF
ISSN	09603182
Journal	Geotechnical and Geological Engineering
Volume Number	35
Issue Number	1
e-ISSN	15731529
Language	English
Publisher	Springer International Publishing
Publisher Date	2016-10-26
Publisher Place	Cham
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Blasting pattern Fragmentation Sarcheshmeh Copper Mine Geotechnical Engineering & Applied Earth Sciences Hydrogeology Terrestrial Pollution Waste Management/Waste Technology Civil Engineering
Content Type	Text
Resource Type	Article
Subject	Soil Science Geology Architecture Geotechnical Engineering and Engineering Geology

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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