Hybrid-approach for sinkhole occurrence risk mitigation in urban areas

2019 3rd International Conference on Energy and Environmental Science

能源学;生态环境科学

Malinowska, A.A.^1 ; Guzy, A.^1 ; Hejmanowski, R.^1 ; Ulmaniec, P.^2

AGH University of Science and Technology, Faculty of Mining Surveying and Environmental Engineering, Al. Mickiewicza 30, Cracow

30-059, Poland^1

Wieliczka Salt Mine, Park Kingi 1, Wieliczka

32-020, Poland^2

关键词: Hybrid approach;    Novel methodology;    Risk mitigation;    Spatial analysis;    Theoretical solutions;    Three-dimensional model;    Underground mine;    Vulnerability maps;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/291/1/012022/pdf
DOI  :  10.1088/1755-1315/291/1/012022

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Presented research focused on the development of a novel methodology for sinkhole risk assessment above shallow caverns in a salt mine. The research was carried out for the Wieliczka Salt Mine, which is registered on the UNESCO list and visited by near around 2 million tourists every year. The main assumption of the investigation was to estimate root cause of sinkhole occurrence on the surface. Based on the arch pressure theory the vertical stress in the roof of salt caverns was established. Constructed three-dimensional model of underground mine allowed to determine the stresses between the caverns. Furthermore, the caverns which were hazarded by roof collapse were indicated. Hybrid solution was supported by multicriteria risk analysis based on Analytic Hierarchy Process carried out in Geographical Information System. Spatial analysis led to the identification of caverns potentially influenced by other risk factors. Developed final risk maps were based on four the most significant risk factors leading to sinkhole occurrence. Vulnerability maps developed with support of Analytic Hierarchy Process indicated areas where habitants and infrastructure are exposed to sinkhole occurrence. Merging risk maps with vulnerability maps led to final hazard map, where urban areas susceptible to sinkhole occurrence were shown. In conclusion, the research carried out proved that combined spatial analysis with theoretical solution may pave the way for reliable sinkhole risk assessment above shallow caverns.