Volume 46 Issue 4
Aug.  2018
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LYU Yuanqiang, ZHAO Jingang, FENG Wei, DONG Zhuanyun. Monitoring and analysis of natural foundation subsidence of raw coal bunker with big load[J]. COAL GEOLOGY & EXPLORATION, 2018, 46(4): 122-128. DOI: 10.3969/j.issn.1001-1986.2018.04.020
Citation: LYU Yuanqiang, ZHAO Jingang, FENG Wei, DONG Zhuanyun. Monitoring and analysis of natural foundation subsidence of raw coal bunker with big load[J]. COAL GEOLOGY & EXPLORATION, 2018, 46(4): 122-128. DOI: 10.3969/j.issn.1001-1986.2018.04.020
shu

Monitoring and analysis of natural foundation subsidence of raw coal bunker with big load

  • 1. College of Geology Engineering and Geomatics, Chang'an University, Xi'an 710054, China;

  • 2. China Coal Xi'an Design Engineering Co. Ltd., Xi'an 710054, China

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  • Received Date: March 01, 2018
  • Published Date: August 24, 2018
    Graphical Abstract
    • Abstract
  • In order to reflect the characteristics and regularity of natural foundation subsidence of raw coal bunker with big load and to ensure the safety of the project, a set of subsidence monitoring system was built at the study site, after tracking ground subsidence of raw coal bunker with big load during construction and operation, we verified the "standard method" and "three dimensional numerical analysis method" according to the actual monitoring results. The results show that the actual deformation of the foundation of raw coal bunker met the allowable value required in norms and it was proved that the scheme using the Quaternary lacustrine sand layer as natural foundation was feasible; the actual subsidence of the foundation soil is mainly concentrated in the operation period, the proportion of the subsidence during construction stage is small(10% to 27%), while the proportion of subsidence during the construction stage, calculated in the norms is more than 40%. The influence of foundation stiffness during the calculation and prediction process was considered, the calculation results of the pressure distribution and the subsidence of the foundation soil were more consistent with actual situation. The research results can provide theoretical basis and reference for site design, construction and safe operation of similar project.
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