SUITABILITY EVALUATION OF UNDERGROUND SPACE IN THE CORE AREA OF HELINGER NEW AREA IN INNER MONGOLIA

Based on the existing survey data and the MapGIS platform, this paper took the core area of Helinger New Area in Inner Mongolia as the research object. We selected 9 factors from 4 aspects(hydrogeology, engineering geology, bad geology and landform) to form an underground space suitability evaluation index system, and used Analytic Hierarchy Process to evaluate the suitability of the underground space in the study area. The evaluation results showed that the more suitable shallow underground space and the more suitable middle underground space in the study area accounted for 99.71% and 95.03% of the total area; the more suitable deep underground space was in the southeast of the study area, accounting for 26.95% of the total area. The sub-suitable areas were widely distributed in the central and western regions of the study area, accounting for 72.27% of the total area. This research demonstrate that the comprehensive suitability of underground space resources in the study area is mainly more suitable area and sub-suitable area, and the suitability of underground space resources in different vertical levels and different locations is different in the study area. Overall, the spatial distribution of resource conditions is "the best in the shallow layer, the second in the middle layer and the worse in the deep layer".