Abstract：Calculation of the rock pressure is still primarily based on the loose media theory，but the existing criteria cannot clearly define which class of surrounding rocks is the loose rock mass，producing the negative values in the calculating results. Meanwhile，the division of deep- and shallow-buried tunnels as an important issue is not still a final conclusion. Taking the rectangular tunnel with arch crown as the analysis object，the comparative analysis is carries out，and the difference of several methods of shallow-buried tunnel lies in stress analysis method，application of shearing strength theory and method for transforming lateral pressure of wedge body into earth pillar pressure. The basic condition of tunnel shape which can make sure to not produce negative value is obtained by using the formulae of Terzaghi，Xie Jiaxiao and Bierbaumer. Considering the advantages and disadvantages of existing division methods of deep- and shallow-buried tunnels comprehensively，the dividing line standard of deep- and shallow-buried tunnels is proposed which is between M. M. Promojiyfakonov law and Bierbaumer law. Taking the hole span as criterion，the fitting formula of correction factor which can consider comprehensive impact of cavity is built，and the rock mass mechanical parameters are considered in process of formula establishment.
曲 星，李 宁. 松散岩体竖向压力计算方法剖析及隧洞深浅埋划分方法研究[J]. 岩石力学与工程学报, 2011, 30(S1): 2749-2757.
QU Xing，LI Ning. ANALYSIS OF CALCULATION METHOD OF VERTICAL PRESSURE IN LOOSE ROCK MASS AND RESEARCH ON DIVIDING LINE STANDARD FOR DEEP- AND SHALLOW-BURIED TUNNELS. , 2011, 30(S1): 2749-2757.
凌贤长，蔡德所. 岩体力学[M]. 哈尔滨：哈尔滨工业大学出版社，2002：279-291.(LING Xianchang，CAI Desuo. Rock mass mechanics[M]. Harbin：Harbin Institute of Technology Press，2002：279-291.(in Chinese))
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2011, Vol. 30 
