Study on Classification of Stratum Combination and Application of Shallow Tunneling Method in Hefei Metro Tunnel
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    Abstract:

    The construction of metro tunnel is closely related to the geological conditions. Through summarizing the geological exploration data and the engineering data of the planned Hefei metro line 1~5, the distribution of geomorphic feature in Hefei area was also taken into consideration to study the geological conditions of shallow tunneling engineering of Hefei metro in depth. Three different methods including statistical analysis, numerical model and field measurement had been adopted to make the research more comprehensive and rigorous. The re- sults indicate that the overall generalization of the engineering geological layer, namely, unifying and simplifying the serial number of strata by engineering geology, can be followed by the principle that “the sedimentary age of stratum is given to the priority with the application of geotechnical engineering as the complement” in Hefei area. According to the characteristics of stratigraphic section, the stratum combinations which Hefei metro tunnel might cross can be classified as A~D, among them A stratum combination is the most favorable for the tunnel construction, B stratum combination's ability to control the deformation of surrounding rock is superior to C and D stratum combination. The above results can provide guidance for the analysis of geological condition and the construction of Hefei metro tunnel.

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裴子钰,周仕波,杨新安,黄彬,陈翔.合肥地铁隧道地层组合分类及暗挖适用性研究[J].华东交通大学学报英文版,2018,35(6):13-22.
Pei Ziyu, Zhou Shibo, Yang Xinan, Huang Bin, Chen Xiang. Study on Classification of Stratum Combination and Application of Shallow Tunneling Method in Hefei Metro Tunnel[J]. JOURNAL OF EAST CHINA JIAOTONG UNIVERSTTY,2018,35(6):13-22

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  • Online: May 26,2021
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