Wyniki wyszukiwania - BazTech

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Evaluating the post-mining land uses of former mine sites for sustainable purposes in South Africa

Mhlongo Sphiwe E.

Journal of Sustainable Mining

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2023

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Vol. 22. iss. 2

110--127

EN

This paper uses a case study of an abandoned magnesite mine in the Limpopo Province of South Africa to ﬁnd ways of identifying post-mining land used from the current uses of the abandoned mine sites or features. The approach used involved carrying out a ﬁeld characterization of the mine site and documentation of the current uses of the features of the abandoned mine site. The technique used to identify the internal and external factors of the land uses involved analyzing their Strength, Weakness, Opportunities, and Threats. The Analytic Hierarchy Process (AHP) technique was used for further ranking of the land uses to identify the most post-mining or rehabilitation land uses for the different parts of the mine. Lastly, the earthwork requirement in reshaping the terrain of the mine to support the selected land uses was estimated from the 3D-terrain models generated from height data collected using a Real-Time Kinematic Geographical Positioning System. The results of the study identiﬁed land use that needs further surface development as the most appropriate for the abandoned Nyala Mine. These land uses demonstrated the potential of addressing the hazards of the mine with the clear promise of improving the socio-economic status of the host communities.

2

A comparison of interpolation methods for flood zones adjacent to a stream

Grzelak D., Kwinta A.

Geomatics, Landmanagement and Landscape

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2013

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no. 3

49--58

EN

Even small streams may cause severe flooding. The evaluation of the safety of people and objects in the area of a watercourse is related to modelling of flood zones. The area of potential flood zones is calculated on the basis of a Digital Terrain Model (DTM). This paper presents interpolation methods for creating DTMs based on land surveying data. The result of sample modelling is compared with selected interpolation methods.

3

Automated airborne LiDAR-based assessment of timber measurements for forest management

Zaremba M. B., Doyon F., Senécal J. F.

Management and Production Engineering Review

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2012

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Vol. 3, No. 3

79-85

EN

This paper presents processing and analysis techniques to apply LiDAR data to estimate tree diameter at breast height (DBH) - a critical variable applied in a large number of forest management tasks. Our analysis focuses on the estimation of DBH using only LiDAR-derived tree height and tree crown dimensions, i.e., variables accessible from aerial observations. The modeling process was performed using 161 white and red pine trees from four 3850 m2 plots in the Foret de l'Aigle located in southwestern Quebec. Segments of the LiDAR data extracted for DBH estimation were obtained using the Individual Tree Crown (ITC) delineation method. Regression models were investigated using height as well as crown dimensions, which increased the precision of the model. This study demonstrates that DBH can be modeled to acceptable accuracy using altimetry data and automated data processing procedures and then be used in high-precision timber volume assessment.

4

Co z trzecim wymiarem?

Gotlib D., Olszewski R.

Geodeta : magazyn geoinformacyjny

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2006

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nr 4

31-34

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O dokładności numerycznego modelu terenu opracowanego fotogrametryczne

Wysocki J.

Geodeta : magazyn geoinformacyjny

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1999

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nr 9

36--37