Open AccessResearch on the Stable Region Division of Urban Underground Space Development
Author(s) -
Ziguang Zhang,
Jianli Li,
Guizhou Cao
Publication year - 2019
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/358/4/042041
Subject(s) - stratum , division (mathematics) , excavation , development (topology) , boundary (topology) , span (engineering) , space (punctuation) , geology , civil engineering , geotechnical engineering , mining engineering , computer science , engineering , mathematics , mathematical analysis , arithmetic , operating system
Based on giving full play to the self-stabilization ability of surrounding rock, this paper puts forward the concept, ideas and research methods of stable region division of urban underground space development. Then, the stable region division is systematically studied in the single stratum and the composite strata of upper soil and lower rock under different thickness of overlying soft soil stratum and different excavation span. It is pointed out that the larger the thickness of soft soil stratum is, the larger the excavation span is, the greater the boundary depth between the difficult stable region (DSR) and the easy stable region (ESR). Finally, combining with the characteristics of topographic and geomorphological and the statistical analysis of stratum thickness and its physical and mechanical parameters, the spatial distribution map of difficult and easy stable region of underground engineering along Qingdao metro is drawn. The research results provide theoretical basis and scientific basis for rational planning and design of urban underground space development and utilization.