›› 2005, Vol. 26 ›› Issue (9): 1448-1451.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Study on structural stability of deep buried highway tunnel with underlying coal bed exploiting

LI Xiao-hong1, JIN Xiao-guang1,2, WANG Hong-tu1, JIANG De-yi1   

  1. 1. Key Lab. for the Exploitation of Southwestern Resources & the Environmental Disaster Control Engineering, Ministry of Education, Chongqing 400030, China; 2. College of Civil Engineering, Chongqing University, Chongqing 400030, China
  • Received:2005-02-28 Online:2005-09-10 Published:2013-12-30

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Abstract: Dynamic construction process which consists of excavation, primary lining and secondary lining of deep buried tunnel (depth above the crown of tunnel about 490 m) was analysed in coal measures strata by 3D FEM numerical simulation. Characteristics of the tunnel support structural displacement and stress changes were analysed emphatically when underlying coal bed (dip angle =30°, thickness h=2.8 m) was exploited according to sub-level and full collapse method. Economic and safe prohibiting exploited depth of underlying coal bed is presented. So that a scientific basis for tunnel construction of coal measures strata and reasonable exploiting mineral resources in complex geological conditions is offered.

Key words: underlying coal bed, exploitation, deep buried tunnel, numerical analysis, structural stability

CLC Number: 

  • U 451
  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
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