FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W200919400> ?p ?o ?g. }

• W200919400 abstract "For the construction of breakwaters large amounts of armourstone which are produced in dedicated quarries are needed. The better the in-situ block size distribution (IBSD) of these quarries can be determined, the more accurately the quarry production can be predicted. Currently, the IBSD prediction is based on manually acquired scanline data. This method is accompanied with a lot of disadvantages as it is an unsafe, time consuming and subjective method of data gathering in which the amount of gathered data strongly depends on the reach of the surveyor. To determine the IBSD the resulting data is inserted into Wang’s equation method, which uses the mean discontinuity set properties (orientation and principal mean spacing) as input. Taking the disadvantages of the manual scanlining method into account, 3D terrestrial laser scanning is proposed as a suitable alternative to gather the discontinuity data. This thesis investigates the applicability of laser data for IBSD determination. The research is based on the manual and laser data that was gathered during a fieldwork in the Dan-quarry in Benin. Firstly, it is investigated whether it is possible to replace the manually gathered discontinuity data by laser data by simulating a virtual scanline in the point cloud. Secondly, as the laser scanner allows to gather discontinuity data across the entire rockface, an alternative method which allows to take all the obtained discontinuity data directly into account becomes necessary. It is for this purpose that the voxel method in this thesis is developed. This approach has not been used for geotechnical purposes before and is based on the method that is used in the medical world to determine volume data from CT scans. It requires a bounding box to be subdivided into voxels of a predefined size. The position of the centre of each voxel is evaluated with respect to all discontinuity planes that intersect the bounding box. As voxels with the same position with respect to all discontinuity planes can be considered to belong to the same block, the sum of the volumes of these voxels gives the in-situ block size. When comparing the results of the two developed methods with the manually obtained results, it is found that they can represent at best a lower boundary of the IBSD. The main reason for this is that the laser data results in a lot more planes than the manual data. This decreases the IBSD drastically and allows to the conclude that although the orientation data can be easily obtained from the laser data, more effort is needed to obtain the correct spacing and the persistence of the found discontinuities. The effects caused by this are larger in case of the voxel method as all discontinuities over the full height of the face are taken into account instead of only the ones that intersect the virtual scanline. Therefore it is concluded that the virtual scanline method can be used to determine a lower boundary for the IBSD whereas the voxel method, although it has great potential to become an alternative method for IBSD determination from laser scan data, needs more research." @default.
• W200919400 created "2016-06-24" @default.
• W200919400 creator A5074343800 @default.
• W200919400 date "2013-10-18" @default.
• W200919400 modified "2023-09-28" @default.
• W200919400 title "In-situ block size estimation using 3D terrestrial data" @default.
• W200919400 hasPublicationYear "2013" @default.
• W200919400 type Work @default.
• W200919400 sameAs 200919400 @default.
• W200919400 citedByCount "0" @default.
• W200919400 crossrefType "journal-article" @default.
• W200919400 hasAuthorship W200919400A5074343800 @default.
• W200919400 hasConcept C11413529 @default.
• W200919400 hasConcept C120665830 @default.
• W200919400 hasConcept C121332964 @default.
• W200919400 hasConcept C124101348 @default.
• W200919400 hasConcept C127313418 @default.
• W200919400 hasConcept C131979681 @default.
• W200919400 hasConcept C134306372 @default.
• W200919400 hasConcept C138827492 @default.
• W200919400 hasConcept C141349535 @default.
• W200919400 hasConcept C142748172 @default.
• W200919400 hasConcept C154945302 @default.
• W200919400 hasConcept C160633673 @default.
• W200919400 hasConcept C2524010 @default.
• W200919400 hasConcept C2777042112 @default.
• W200919400 hasConcept C2777210771 @default.
• W200919400 hasConcept C31972630 @default.
• W200919400 hasConcept C33923547 @default.
• W200919400 hasConcept C41008148 @default.
• W200919400 hasConcept C520434653 @default.
• W200919400 hasConcept C58489278 @default.
• W200919400 hasConcept C62649853 @default.
• W200919400 hasConcept C77088390 @default.
• W200919400 hasConcept C78201319 @default.
• W200919400 hasConceptScore W200919400C11413529 @default.
• W200919400 hasConceptScore W200919400C120665830 @default.
• W200919400 hasConceptScore W200919400C121332964 @default.
• W200919400 hasConceptScore W200919400C124101348 @default.
• W200919400 hasConceptScore W200919400C127313418 @default.
• W200919400 hasConceptScore W200919400C131979681 @default.
• W200919400 hasConceptScore W200919400C134306372 @default.
• W200919400 hasConceptScore W200919400C138827492 @default.
• W200919400 hasConceptScore W200919400C141349535 @default.
• W200919400 hasConceptScore W200919400C142748172 @default.
• W200919400 hasConceptScore W200919400C154945302 @default.
• W200919400 hasConceptScore W200919400C160633673 @default.
• W200919400 hasConceptScore W200919400C2524010 @default.
• W200919400 hasConceptScore W200919400C2777042112 @default.
• W200919400 hasConceptScore W200919400C2777210771 @default.
• W200919400 hasConceptScore W200919400C31972630 @default.
• W200919400 hasConceptScore W200919400C33923547 @default.
• W200919400 hasConceptScore W200919400C41008148 @default.
• W200919400 hasConceptScore W200919400C520434653 @default.
• W200919400 hasConceptScore W200919400C58489278 @default.
• W200919400 hasConceptScore W200919400C62649853 @default.
• W200919400 hasConceptScore W200919400C77088390 @default.
• W200919400 hasConceptScore W200919400C78201319 @default.
• W200919400 hasLocation W2009194001 @default.
• W200919400 hasOpenAccess W200919400 @default.
• W200919400 hasPrimaryLocation W2009194001 @default.
• W200919400 hasRelatedWork W1983165419 @default.
• W200919400 hasRelatedWork W2015525736 @default.
• W200919400 hasRelatedWork W2017748364 @default.
• W200919400 hasRelatedWork W2020016532 @default.
• W200919400 hasRelatedWork W2020429835 @default.
• W200919400 hasRelatedWork W2022589195 @default.
• W200919400 hasRelatedWork W2033031864 @default.
• W200919400 hasRelatedWork W2052832258 @default.
• W200919400 hasRelatedWork W2092323166 @default.
• W200919400 hasRelatedWork W2135032701 @default.
• W200919400 hasRelatedWork W2145343747 @default.
• W200919400 hasRelatedWork W2186151269 @default.
• W200919400 hasRelatedWork W2202466197 @default.
• W200919400 hasRelatedWork W2235523642 @default.
• W200919400 hasRelatedWork W2402530762 @default.
• W200919400 hasRelatedWork W2584799679 @default.
• W200919400 hasRelatedWork W2606682467 @default.
• W200919400 hasRelatedWork W2743515096 @default.
• W200919400 hasRelatedWork W3082688625 @default.
• W200919400 hasRelatedWork W3090351646 @default.
• W200919400 isParatext "false" @default.
• W200919400 isRetracted "false" @default.
• W200919400 magId "200919400" @default.
• W200919400 workType "article" @default.