›› 2010, Vol. 31 ›› Issue (2): 609-614.

• Geotechnical Engineering • Previous Articles     Next Articles

A model of shear slipping of overlying strata under mining disturbance

LIU Dong-yan1, SUN Hai-tao 1, 2, ZHANG Yan2   

  1. 1. College of Civil Engineering, Chongqing Univesity, Chongqing 400044, China; 2. Chongqing Branch, Chinese Coal Research Institute, Chongqing 400037, China
  • Received:2008-06-26 Online:2010-02-10 Published:2010-03-24

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Abstract:

Under the mining disturbance the overlying strata will get a great adjustment; and displacements in the vertical and horizontal orientations occur. The characteristics of layers in coal geology overlying strata make the strata slipping displacement not reasonable which gained based on the homogeneous medium or loosening medium theory. So a complex rock beam model is set up to analyze the overlying strata shear slipping; and a numerical simulation for an engineering example is given to demonstrate the correctness of the model. The results show that the model is reasonable and feasible.

Key words: strata slipping, complex rock beam, shear failure

CLC Number: 

  • TD 325
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