Details

Autor(en) / Beteiligte

• Hoang, Nguyen Van
• Hung, Hoang Viet
• Cuong, Tran Quoc

Titel

Characteristics and Affecting Factors of Sinkhole Development in Cho Don Area, Bac Kan Province, Vietnam

Ist Teil von

• IOP conference series. Earth and environmental science, 2021-03, Vol.690 (1), p.12025

Ort / Verlag

Bristol: IOP Publishing

Erscheinungsjahr

2021

Link zum Volltext

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• Abstract Cho Don district, Bac Kan province, Vietnam is an area where mineral resources are very concentrated. The most potential minerals in the areas are iron, lead, zinc ores and construction materials with large reserves. The mines that have been explored and have large mineral reserves are mines in Bang Lung town’s surrounding area with reserve of about 5,032 thousand tons of ores. Na Tum mine in Cho Don district, Bac Kan province started to operate in April 2007, but since December 2007 up to now a number of large and very large sinkholes have been being developed and most likely shall be developed in future. Na Tum mine dewatering had been considered as a main induced sinkhole formation driving factor. Other necessary and sufficient conditions of sinkhole development and natural factors which accelerate sinkhole formation triggering mechanism have been studied and identified in this paper. The results are essentially important for future comprehensive detailed engineering geological, hydrogeolocical and geotechnical engineering investigation plan which is required for sinkhole geotechnical quantitative analysis, based on which both management and engineering measures to prevent the future sinkhole development, to provide sinkhole warning, to remediation of sinkholes, to carry out the local resident resettlement etc. can be developed. This is an important part of sustainable social-economical development and environmental protection in term of induced geohazards related to mining activities.