他们用防水的水泥防止水从隧道顶部渗入。
They used waterproof cement to prevent water from seeping through the roof of the tunnel.
提出将旧板接裂缝顶部拓宽再采用水泥混凝土搭板来处理接裂缝，然后进行沥青罩面的方法，称为搭板罩面法。
This paper presents bridging slab and asphalt overlay method that is to widen the top of joint and crack and then fill with new concrete and overlaying with asphalt concrete.
随着顶部胶塞通过胶塞定位浮箍达到相应浮箍位置，水泥在压力指示确认下完成顶替过程。
Cement was displaced with pressure indications observed as the top plugs passed through the plug-locator collar and the top wiper plugs bumped on the respective float collars.
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