Open AccessStudy on the engineering geological problems of Nantong Metro and the construction countermeasure
Author(s) -
ZhiLin Ren,
Feiyang Zhao
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/768/1/012173
Subject(s) - geologic hazards , silt , zoning , geology , geotechnical engineering , subsidence , countermeasure , deformation (meteorology) , mining engineering , settlement (finance) , stratum , civil engineering , engineering , geomorphology , landslide , oceanography , structural basin , aerospace engineering , world wide web , computer science , payment
The special geological structure formed by the interactive sedimentation of the Yangtze river brings many potential engineering problems during the subway construction. It is particularly important to carry out the identification of the key layer of geological structure that affects the subway construction to ensure the safety of the project. Based on the geological data of Nantong Metro Line 1, two-dimensional geological model is established to carry out the geological suitability zoning of the project along the subway line, and the key geological formations in different regions are systematically identified. The results show that the key layer group is the thick water-rich sand layer, weak silt soil layer and the newly deposited soil layer in the area, which mainly faces the engineering water hazard problems such as substrate subsidence deformation, permeation deformation and saltwater corrosion. This study provides a reference for subway construction under similar geological conditions.