›› 2010, Vol. 31 ›› Issue (8): 2530-2534.

• Geotechnical Engineering • Previous Articles     Next Articles

Mechanism analysis of floor heave in Yunling Tunnel

WANG Yang 1,2, TANG Xiong-jun1, TAN Xian-kun3, WANG Yuan-han1   

  1. 1.College of Civil Engineering and Mechanics, Huazhong University of Science & Technology, Wuhan 430074, China; 2. Key Laboratory of Geotechnical Mechanics and Engineering of the Ministry of Water Resources, Changjiang River Scientific Research Institute, Wuhan 430010, China; 3. Hubei Province Shiman Expressway Construction Headquarters, Shiyan 442011, China
  • Received:2009-02-18 Online:2010-08-10 Published:2010-08-30

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Abstract:

Combining the construction of Yunling Tunnel of Shiman Expressway, the form and developing process of floor heave in tunnel are described. Several factors affecting floor heave are studied. By analyzing the stability of the invert of tunnel, a formula for calculating floor heave is obtained; and then verified by the data of spot monitoring. By analyzing the mechanism of floor heave of tunnel, the deformation damage mechanism of rock mass is understood correctly and the disposal measures of floor heave are prescribed. The research not only can provide basis to optimize the supporting system of tunnel, but also to guide construction process and insure constructive safety.

Key words: tunnel, weak rock mass, floor heave of invert, disposal measures.

CLC Number: 

  • U 456
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