Possibility of convergence measurement of gates in coal mining using terrestrial 3D laser scanner

Kukutsch, Radovan; Kajzar, Vlastimil; Koníček, Petr; Waclawik, Petr; Ptáček, Jiří

doi:10.1016/j.jsm.2015.08.005

Cited by 23 publications

(12 citation statements)

References 2 publications

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“…Certainly, some of the disadvantages are a complex and time-consuming data processing step, creation of 3D models, and solid body modelling. Two of the most limiting environmental factors are dustiness and darkness [16]. Low visibility in a dusty environment affects the speed of scanning.…”

Section: Resultsmentioning

confidence: 99%

The flexural stiffness and tension state of basalt filter

Khalmuradovich

Ahmedovich

2017

Materials and Geoenvironment

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Recently, a new underground pumping station was constructed 41.5 m below sea level and equipped, which has now become the main underground pumping station of the Velenje Coal Mine (VCM). In this study, use of terrestrial laser scanning (TLS) to acquire the 3D data of the engine room of the underground pumping station is presented. TLS is an advanced technique in spatial information data acquisition, which allows the equipment in the underground pumping station to be digitally captured with unprecedented resolution and accuracy. Integration with metric imagery allows 3D photorealistic models to be created for interpretation and visualisation. The final result shows the actual 3D image of the object recorded with a relative accuracy of a few millimetres. TLS is ideal for capturing the original state before construction commences and the final state after its completion, as well as for both observation of surface changes and detection of deformations. When we have an accurate 3D model of each component in the engine room of the underground pumping station, any maintenance, future upgrades, or modifications can be made with reference to the original state.Key words: terrestrial laser scanning, 3D model, underground pumping station, coal mine Izvleček V zadnjih letih je potekala izgradnja in opremljanje novega podzemnega črpališče na koti -41,5 metrov, ki je postalo glavno podzemno črpališče Premogovnika Velenje. V članku je predstavljena uporaba terestrične-ga laserskega skeniranja (TLS) za zajem 3D podatkov strojnice podzemnega črpališča. TLS je napredna tehnika zajema prostorskih podatkov, s katero smo z izjemno resolucijo in natančnostjo posneli vgrajeno tehnološko opremo v strojnico podzemnega črpališča. Integracija z 2D posnetki omogoča izdelavo 3D foto-realističnih modelov, ki omogočajo natančno interpretacijo in vizualizacijo. Končni rezultat prikazuje dejanski 3D model posnetega objekta z relativno natančnostjo nekaj milimetrov. Uporaba TLS je idealna za zajem in izdelavo dokumentacije prvotnega stanja pred začeto gradnjo in končnega stanja po zaključeni gradnji, nadalje za opazovanje površinskih sprememb in odkrivanje deformacij. Ko razpolagamo z natančnim 3D modelom vseh posameznih komponent strojnice jamskega črpališča, lahko z ozirom na prvotno stanje brez težav planiramo nadgradnje in modifikacije ter zagotavljamo nemoteno izvajanje vzdrževalnih del.Ključne besede: terestrično lasersko skeniranje, 3D model, podzemno črpališče, premogovnik

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Section: Resultsmentioning

confidence: 99%

The flexural stiffness and tension state of basalt filter

Khalmuradovich

Ahmedovich

2017

Materials and Geoenvironment

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“…Laser scanning technology is very useful in the inventory and visualization of historic salt chambers [9,10]. The implementation of these measurements does not require good light and is carried out automatically.…”

Section: Discussionmentioning

confidence: 99%

Defining the Cubature Changes of Historic St. Kinga Chamber in Bochnia Salt Mine, Using Laser Scanning Technology

Szafarczyk

Gawałkiewicz

2018

E3S Web Conf.

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Abstract. In Poland, there are many mining enterprises, of historic character registered in the UNESCO World Heritage List. One of the oldest mining enterprises in Poland is the Salt Mine in Bochnia. The processes inside the rock mass require that surveying services carry out regular geometric control of the cavities. A particular attention should be paid (due to its sacral function) on St. Kinga Chamber, located 195 metres below the surface, on the mine level "August". So far measurement technologies have been connected with the studies on changes in the geometry of cavities and based on linear bases used to measure convergence. This only provides discrete information (in a point) and not always presents a real state of deformation. In the scanning method, in practice a three dimension image of changes (structural deformations) is obtained, impossible to determine with the application of measurement methods, applied to measure the value of linear convergence (the method with a limited number of bases). Laser scanning, apart from determining the value of volume convergence, gives also the possibility of the visualization of 3D cavern. Moreover, it provides direct information to update mining numerical maps and make it possible to generate various cross-sections through the cavern. The authors analysed the possibility of the application of laser scanning (scanner Faro Focus 3D), as a modern tool allowing the measuring of the value of volume convergence.

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“…Geotechnical engineers make use of LIDAR (terrestrial laser scanners) mainly for mapping the underground openings. LIDAR can be used to monitor slow, long-term movements or convergence, and provide statistics about the volume, location and size of rock mass involved in fall of ground events, but it does not provide early warning on the onset of movements and the capability to set up alarms before the ground fall takes place (Kukutsch et al 2015;Slaker 2015). Advanced laser systems can be mounted on machinery and provide change detection information of the scenario by performing rapid scans.…”

Section: Deformation Monitoring In Undergroundmentioning

confidence: 99%

A novel radar-based system for underground mine wall stability monitoring

Cecchetti¹,

Rossi²,

Coppi³

et al. 2017

Proceedings of the First International Conference on Underground Mining Technology

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Ground collapse is a serious issue for underground mining, and currently there is a lack of remote sensing monitoring systems to perform real-time deformation monitoring. Extensometers can be used in several situations; however, this instrumentation obliges the user to work close to unstable areas, thus a remote monitoring system would offer noticeably improved safety conditions. IDS GeoRadar, a provider of radar technology for slope monitoring in surface mining, recently developed an interferometric radar system for underground operations to monitor ground fall precursors and provide early warning in order to evacuate people and machinery at risk. This radar system is able to monitor slow deformations to produce preliminary risk assessment on potentially exposed instabilities in underground areas. The new radar system is able to provide sub-millimetre displacement accuracy at a spatial resolution of tens of centimetres, with updated displacement information every 30 seconds. In this paper, the system is described, along with performance test results and assessment of monitoring performances in real scenarios.

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Possibility of convergence measurement of gates in coal mining using terrestrial 3D laser scanner

Cited by 23 publications

References 2 publications

The flexural stiffness and tension state of basalt filter

The flexural stiffness and tension state of basalt filter

Defining the Cubature Changes of Historic St. Kinga Chamber in Bochnia Salt Mine, Using Laser Scanning Technology

A novel radar-based system for underground mine wall stability monitoring

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