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http://dx.doi.org/10.9719/EEG.2021.54.5.515

GIS-based Network Analysis for the Understanding of Aggregate Resources Supply-demand and Distribution in 2018  

Lee, Jin-Young (Geologic Research Center, Korea Institute of Geoscience and Mineral Resources)
Hong, Sei Sun (Geologic Research Center, Korea Institute of Geoscience and Mineral Resources)
Publication Information
Economic and Environmental Geology / v.54, no.5, 2021 , pp. 515-533 More about this Journal
Abstract
Based on the supply location, demand location, and transportation network, aggregate supply-demand characteristics and aggregate distribution status were analyzed from the results of the closest distance, service areas, and location-allocation scenarios using GIS network analysis. As a result, it was found that the average transport distance of aggregates from the supplier was 6 km on average, the average range of 7 km for sand, and 10 km for gravel was found to reach the destination. In particular, the simulated service area covers about 92% in Seoul-Gyeonggi Province, 85% in Busan-Ulsan-Gyeongnam Province, and more than 90% in Daejeon-Sejong-Chungnam Province. These results have a significant implication in quantitatively interpreting primary data on aggregate supply-demand. Furthermore, these results suggest the possibility of a wide-area quantitative analysis of aggregate supply regions necessary for establishing a basic aggregate plan. The results also evaluated by the site-allocation scenario show that aggregate supply may be possible through companies less than 200 with large-amounts quarries, which is the 700 companies currently supplying small amounts of aggregates on the country. Therefore, in terms of distribution of aggregates, a policy approach is needed to form an appropriate market for regions with high and low density of aggregate supply services, and the necessity of regional distribution and re-evaluation is suggested through an aggregate supply analysis demand across the country. Furthermore, in analyzing the supply-demand network for the aggregate market, additional research is needed to establish long-term policies for the aggregate industry and related industries.
Keywords
aggregate distribution; natural sand; natural gravel; network analysis; supply-demand;
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