结果表明：不管采用哪一种施工顺序，中墙均受偏压荷载的作用并向埋深较浅侧倾斜。

The result shows that on matter which construction order is adopted, the midwall will always slant to the side of shallower depth of cover.

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沉井是软土地基中深基础施工方法之一，在工程用地与环境条件受到限制或埋深较大的地下构筑物工程中被广泛应用。

Sink well is one of built method in deep foundation of soft groundwork, it is used widely in limited ground and limited environment or in deep burying construction.

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第一辅助洞没有斜井或竖井，施工辅助洞采用全射流纵向通风。第二辅助洞埋深大，洞体长，洞形断面小。

First, there is no slope hole or silo, the auxiliary hole of construction adopts longitudinal ventilation only by jet Second, it belongs to deep buried hole, long body, little shape section.

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