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北京地区地铁施工中经常遇到粉细砂层,该砂层自稳能力很差,开挖隧道时极易发生涌水、涌砂、塌方等工程灾害。针对这一情况,研制了一种对粉细砂具有渗透性的超细水泥注浆料。该注浆料不存在水玻璃注浆料耐久性差和强度低的问题,在地铁工程施工中具有广泛的应用前景。
Subway construction in Beijing often encounter silty sand, the sand is poor self-stability, excavation of the tunnel prone to water gushing, sand, landslides and other engineering disasters. In response to this situation, developed a fine permeability of fine sand cement slurry. The grouting material does not exist water glass grouting material poor durability and low strength problems in the subway construction has a wide range of applications.