Current studentsExisting staffContact us
 

Hard rock deep hole cutting blasting technology in vertical shaft freezing bedrock section construction

Simple item page
dc.contributor.authorZheng, Z.
dc.contributor.authorXu, Y.
dc.contributor.authorDong, J.
dc.contributor.authorZong, Q.
dc.contributor.authorWang, L.
dc.date.issued2015
dc.description.abstractUsing the traditional cutting blasting technology in vertical shaft construction has some features, e.g. slows driving speed, gangue with large volume and throwing high. Moreover, large explosive charge initiation has a serious influence on freezing pipes and freezing wall. In this study, the periphery hole charge and charge structure was optimized, and the blasting model of the bedrock vertical shaft section was established by using the ANSYS/LS-DYNA numerical simulation software. In addition, stress concentration of the large diameter empty hole and its influence of blasting efficiency in blasting were analyzed. The field experiment was conducted to verify the blasting results. The results show that using large diameter empty hole blasting technology in vertical shaft construction of frozen hard rock section can significantly improve the speed of vertical shaft construction, obtain the excellent blasting effect and guarantee the safety of freezing pipes and freezing wall.
dc.identifier.citationJournal of Vibroengineering, 2015; 17(3):1105-1119
dc.identifier.issn1392-8716
dc.identifier.urihttps://hdl.handle.net/11541.2/111651
dc.language.isoen
dc.publisherPublic Institution Vibromechanika
dc.relation.fundingNational Natural Science Foundation of China 51374012
dc.relation.fundingNational Natural Science Foundation of China 51174004
dc.relation.fundingAnhui Province Science and Technology Project 1501041123
dc.rightsCopyright 2015 JVE International
dc.titleHard rock deep hole cutting blasting technology in vertical shaft freezing bedrock section construction
dc.typeJournal article
pubs.publication-statusPublished
ror.mmsid9915969910801831

Files

Collections