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Kvalitetssäkrad Bultplansgenerering
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering.
2016 (Swedish)Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
Abstract [sv]

Detta examensarbete inom bergmekanik har utförts på uppdrag av Boliden under perioden april-maj 2016 i Bolidens underjordsgruva i Garpenberg.

Bultriggarna i Garpenberg är utrustade med ett nytt system för att hjälpa operatören att positionera bergbultar enligt planerade bultmönster. Detta innebär att det önskade bultavståndet läggs manuellt in i maskinens dator och genom att referera till två tidigare installerade bultar genereras en plan för nästa bultkrans.

Syftet med examensarbetet var att utföra en kvalitetskontroll gällande bultriggens navigeringssystem genom referensbultning. Genom att jämföra bultriggarnas datalogg mot mätningarna av verkligt utfall undersöktes om bultarna följde den angivna förstärkningsplanen.

Arbetet har utförts genom att mäta in 8 bultkransar (totalt 104 installerade bultar) med  totalstation. Datan har sedan jämförs med bultriggarnas datalogg som automatisk genereras i mjukvaran vid installationen av varje bult. Datan har sedan analyserats med hjälp av datorprogrammen AutoCAD och Microsoft Excel för att beräkna avvikelsen mellan bultriggarnas datalogg och mätningarna av verkligt utfall (medelvärden, standardavvikelse och normalfördelning).

Resultatet av mätningarna visar att 30,4 % av samtliga avvikelser från bultriggens datalogg ligger i intervallet 0-3 centimeter.

Analysen visar en total standardavvikelse på 0,103 meter.

Då analysen av avvikelser från bultriggens datalogg förutsätter att bultriggarnas sensorer är korrekta i sin precision har en kontrollmätning genomförts.

Abstract [en]

This thesis in rock mechanics was carried out on behalf of Boliden during the period of April to May 2016 at Boliden underground mine in Garpenberg.

The bolting rigs in Garpenberg are equipped with a new system to assist the operator to position the rock bolts according to the planned bolting pattern. This means that the planned bolt spacing is manually inserted in the bolt positioning software and by referring to two previously installed bolts the planned location of the next bolting fan is generated and shown in the software.

The aim of the thesis was to perform a quality control regarding the bolting rigs navigation system by reference bolting. Through comparing the bolting rigs data log with the measurements of the actual outcome it was determined if the location of the bolts were positioned according to the specified rock support plan.

The work was performed by measuring the location of eight bolting fans (a total of 104 installed bolts) with a total station. The data was then compared with a data log that is automatically generated in the software at the installation of each bolt. The data has mainly been analysed using computer software such as AutoCAD and Microsoft Excel in order to calculate deviation of the bolting rigs data log and the measurements of actual outcome (mean values, standard deviation and normal distribution).

The result of the measurements shows that 30.4% of all rock bolts are in the range of 0-3 centimetres from their planned locations.

The analysis shows a total standard deviation of 0.103 metres.

The analysis of deviations requires that the sensors on the joints of the bolting rigs are calibrated for the bolt positioning software and therefore control measurements were carried out.

Place, publisher, year, edition, pages
2016. , 25 p.
Keyword [sv]
Bergförstärkning, Boliden, Bultning, Bergbult, Bultplansgenerering, Garpenberg, Analys, Kvalitet, Bultningsinstrument
National Category
Mineral and Mine Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-41887OAI: oai:DiVA.org:ltu-41887DiVA: diva2:1015007
External cooperation
Boliden Mineral AB, Anders Nyström anders.nystrom@boliden.com
Educational program
Mining and Geotechnical Industry, Higher Education Diploma
Supervisors
Examiners
Available from: 2016-10-28 Created: 2016-10-03 Last updated: 2016-10-31Bibliographically approved

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