Abstract:Underground water is a big problem for tunneling under rivers or oceans. So it’s practical method to consider pore pressure for determination minimum value of surface support pressure. What’s more, the earth thickness above excavation tunnel changes because of the riverbed existence, which makes surface support pressure more difficult to set. Active earth pressure theory, Murayama formula and fluid-structure interaction theory are used to analysis the minimum value of surface support pressure. Relationship bet… Show more
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