›› 2014, Vol. 35 ›› Issue (S2): 474-480.

• Geotechnical Engineering • Previous Articles     Next Articles

Analysis of impact of surrounding rock post-grouting for large oil cavern on its water seal ability based on fluid-solid coupling

ZHANG Long-yun1, 2, ZHANG Qiang-yong1, LI Shu-cai1, XUE Yi-guo1, WANG Zhe-chao1, YANG Shang-yang1, 3   

  1. 1. Research Center of Geotechnical ＆ Structural Engineering, Shandong University, Jinan 250061, China; 2. Department of Logistics Security, Shandong University, Jinan 250100, China; 3. Department of Physics and Mathematics, Shandong Jiaotong University, Jinan 250023, China
  • Received:2014-03-31 Online:2014-10-31 Published:2014-11-12

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Abstract: By properly selecting the main physical and mechanical parameters of surrounding rock, a model for calculating water inflow of a large underground water seal oil cavern after the whole section excavation is established based on porous elastic continuum fluid-solid coupling theory. And the groundwater seepage field and displacement field of Huangdao oil storage underground water seal cavern are analyzed with numerical simulation. By the comparative analysis of different grouting mode and different thickness of grouting case, it is found that it is not a fact that the greater the thickness of grouting circle of cavern, the better control effect of the seepage flow. There is a relatively economic and reasonable threshold. The results show that the best way of post-grouting is to form a whole section closing grouting circle, and the best thickness of grouting is 5 meters.

Key words: water seal oil cavern, post-grouting, seepage field, fluid-solid coupling

CLC Number: 

  • TE 822
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