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Influence of geotechnical conditions on explosive specific charge in Sri Lankan quarrying and tunnelling practices

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dc.contributor.author De Silva, PHHM
dc.contributor.author Anuruddha, HMD
dc.contributor.author Abeysinghe, AMCL
dc.contributor.author Priyashantha, KMDC
dc.contributor.author Hemalal, PVA
dc.contributor.author Dharmaratne, PGR
dc.contributor.editor Hemalal, PVA
dc.date.accessioned 2022-07-26T06:19:26Z
dc.date.available 2022-07-26T06:19:26Z
dc.date.issued 2015-07
dc.identifier.citation De Silva, P.H.H.M., Anuruddha, H.M.D., Abeysinghe, A.M.C.L., Priyashantha, K.M.D.C., Hemalal, P.V.A., & Dharmaratne, P.G.R. (2015). Influence of geotechnical conditions on explosive specific charge in Sri Lankan quarrying and tunnelling practices. In P.V.A. Hemalal (Ed.), Proceedings of the 9th Annual ERE Research Conference on Earth Resources Management (pp. 9-14). Department of Earth Resources Engineering, University of Moratuwa. en_US
dc.identifier.uri http://dl.lib.uom.lk/handle/123/18463
dc.description.abstract Quarrying and underground excavations carried out by drilling-and blasting is the most commen technique usued in sri lankan mining practice Although only a small amount of the explosive energy is efficiently utilized in rock blasting, the economics of subsequent processes such as loading, hauling and crushing are governed by the initial explosive impact on breakage of hard rock. Explosive consumption in the initial stage of rock breakage from the mass is expressed in terms of explosive specific charge or powder factor. Variations in geological and geo-technical parameters such as rock joint characteristics; strength of rock and rock mass rating (RMR) with varying geological characteristics is reflected in the variation of the specific charge of the explosive. Even though there is a large variation in geology over the Sri Lankan land mass only the metamorphic rock terrain has been considered, in studying the influence of geological and geotechnical properties on the determination of the explosive specific charge as an important parameter in blast planning and estimation. The paper emphasises the relationship of rock strength parameters and rock mass rating when estimating optimum explosive specific charge for economical quarrying and tunnelling practices in Sri Lankan conditions. en_US
dc.language.iso en en_US
dc.publisher Department of Earth Resources Engineering en_US
dc.subject Specific charge en_US
dc.subject Geology en_US
dc.subject Fragmentation en_US
dc.subject RMR en_US
dc.subject Point load strength en_US
dc.subject Brazilian tensile strength en_US
dc.title Influence of geotechnical conditions on explosive specific charge in Sri Lankan quarrying and tunnelling practices en_US
dc.type Conference-Full-text en_US
dc.identifier.faculty Engineering en_US
dc.identifier.department Department of Earth Resources Engineering en_US
dc.identifier.year 2015 en_US
dc.identifier.place Katubedda en_US
dc.identifier.pgnos pp. 9-14 en_US
dc.identifier.proceeding Proceedings of the 9th Annual ERE Research Conference on Earth Resources Management en_US
dc.identifier.email hpanagoda54@gmail.com en_US
dc.identifier.email dharme27@yahoo.com en_US
dcterms.subject Geotechnical parameters


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