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防渗漏是地下建筑工程的技术难点,对于地铁车站的防水,要求达到一级防水标准,即在通风条件下不出现渗漏,侧墙允许偶有湿痕。针对上述要求,上海隧道工程轨道交通设计研究院首先提出,在地铁车站的无内衬地下墙(兼结构外墙)内,采用刚性4层抹面(见图1)防水施工技术,即利用不同配合比的素灰和水泥砂浆分层分次施工,互相横竖交替抹压密实,充分切断各层次细孔网,构成一个
Anti-seepage is a technical difficulty of underground construction projects. For the waterproofing of metro stations, it is required to achieve the first-class waterproofing standard, that is, no leakage occurs under ventilation and the sidewalls allow occasional wet marks. In response to the above requirements, Shanghai Tunnel Engineering Design and Research Institute of Railways first proposed in the subway station without lining the underground wall (and structure of the external walls), the use of rigid 4-layer matte (see Figure 1) waterproof construction techniques that use different combinations Than the prime gray and cement mortar layered construction, alternating horizontal and vertical wipe dense, fully cut off all levels of pore network to form a