Earth Science Frontiers ›› 2023, Vol. 30 ›› Issue (4): 514-524.DOI: 10.13745/j.esf.sf.2023.2.45

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Suitability evaluation of underground space development in Shenzhen: Urban geoenvironmental considerations

SU Dong1,2,5(), HUANG Maolong1, HAN Wenlong1, LI Aiguo3, WANG Enzhi4, CHEN Xiangsheng1,2,5,*   

  1. 1. College of Civil and Transportation Engineering, Shenzhen University, Shenzhen 518060, China
    2. Key Laboratory for Resilient Infrastructures of Coastal Cities (Shenzhen University), Ministry of Education, Shenzhen University, Shenzhen 518060, China
    3. Shenzhen Geotechnical Surveying & Investigation Institute (Group)Co. Ltd., Shenzhen 518028, China
    4. School of Civil Engineering, Tsinghua University, Beijing 100084, China
    5. Shenzhen Key Laboratory of Green, Efficient and Intelligent Construction of Underground Metro Station, Shenzhen University, Shenzhen 518060, China
  • Received:2022-05-22 Revised:2022-06-22 Online:2023-07-25 Published:2023-07-07

Abstract:

To assess the suitability of underground space development in Shenzhen we examined various influencing factors, such as geological environment, surface environment, economic development and geological disaster, to establish a suitability evaluation framework for shallow underground space development and utilization. Fourteen evaluation indicators under 6 categories (geoengineering, hydrogeology, geohazard risk, development status, topography and geology) were used, and the weight of each indicators was determined by scaling index and analytic hierarchy process (AHP) methods. In the final assessment, each urban area of interest was graded suitable, sub-suitable, average or poor for underground space development, and suitability maps were made which showed that the suitable and sub-suitable zones were concentrated in Futian, Nanshan and Bao’an Districts and accounted for ~80% of the total urban area. Therefore, Shenzhen has highly favorable conditions for underground space development. This assessment provided a theoretical basis for underground development planning in Shenzhen, and the suitability evaluation framework developed for Shenzhen can be applied to other cities with similar geological conditions.

Key words: urban geological environment, underground space, suitability evaluation, analytic hierarchy process, Shenzhen city

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