Journal of Applied Sciences1812-56541812-5662Asian Network for Scientific Information10.3923/jas.2013.5739.5743Cun-HanHuangFeng Tao1220131324Fault water inrush is a geological disaster occurring in underground
coal mines, which can bring serious threat to mining produce. High water pressure
in aquifers is an important factor causing fault water inrush. According to
the clamped beam theory of material mechanics, the open displacement formula
of fault is deduced to study the fault opening law under water pressure and
its criterion is proposed. Based on the deduced formula, the effect laws caused
by the aquifer water pressure and the rock’s modulus are analyzed. The
main results are as follows, the larger the water pressure is, the bigger the
fault’s open displacement will be and the greater the probability of water
inrush will also be. It is negative correlation between the fault’s open
displacement and the rock’s elastic modulus, where the weaker the stiffness
of the rock is, the fault will open easier. The example’s calculation shows
that the faults will all open and it has been proven with the engineering practice.]]>Huang, C.H., T. Feng and W.J. Wang,2010Li, L.C., C.A. Tang and Z.Z. Liang,2009Bu, W. and X. Mao,2009Li, K., X.B. Mao and L. Chen,2011Guo, X.Z., C.A. Tang, Q.B. Feng and J.X. Zhang,2012Huang, B.X., C.Y. Liu and J.L. Xu,2009Liu, X.L. and S.Y. Wang,2012Shi, X. and L. Li,2012Zhang, H.M. and S. Dong,2011Zhang, B.H. and J.H. Deng,2012Shi, L.Q. and J. Han,2004Liu, H.W.,2004Kang, Y.H.,1996Liu, B.Z.,2007Wu, Y.H., W.Q. Zhang and K.Q. Zhao,2009