Abstract Based on the bursting modes such as overall heaving,water and sand inrushing in contact between soil and underground structures and surface boiling,judgment methods that determine whether inrushing happens were studied by numerical and theoretical analyses. Results show that the rupture surface modes include vertical plane and circular plane with the angle of with impermeable layer. Then the shear force formula of rupture surface was established and a quantitative calculation method to determine whether overall heaving occurs was gained through theoretical derivation. Based on the mechanism of surface boiling and the index of tensile-shear failure,the judgment formulus that determines whether surface boiling happens was gained. By comparison,it is shown that the calculated values have a good agreement with the experimental values.
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Received: 10 May 2011
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