Comprehensive quality evaluation of underground space resources in Yinchuan City

The rapid development of urban economy has led to the increasing shortage of ground land.The evaluation of comprehensive quality of urban underground space resources for the efficient and reasonable use of underground space becomes an important way to solve the problem of urban diseases.Taking Yinchuan City as an example, the comprehensive quality evaluation of underground space resources was carried out.The difficulty, potential value and comprehensive quality evaluation models of underground space resources development were established respectively, and the evaluation indexes including geological conditions, environmental conditions and social and economic conditions were determined.The weight of each evaluation index was determined by using analytic hierarchy process (AHP).By using GIS technology, the difficulty and potential value of underground space resources development in Yinchuan City were evaluated, and the comprehensive quality evaluation results of Yinchuan underground space resources were obtained.The results show that the development difficulty of shallow underground space resources in Yinchuan City is mainly affected by rock and soil problems, as well as obviously restricted by ecological protection requirements and existing building facilities.The areas with high potential value are the central urban area and the urban areas of Yongning county and Helan County.The underground space resources around drum Tower, railway station, bus station and other core areas in the central urban area have the highest comprehensive quality grade.The evaluation results have high reference value for urban development planning and underground space development and utilization in Yinchuan City.