我国地下建筑防水,长期沿用着沥青及其油毡作为防水材料,耐久性差,返修量大。近年来,性能优良的高分子防水材料发展迅速,提高了防水质量。还有一些高分子防水材料对湿基层的适应性能差,用于渗漏部位返修,施工之前必须先行止水,往往仍要借助于化学注浆。由于化学注浆工艺复杂, Waterproofing underground buildings in China has long been used as a waterproof material for asphalt and linoleum. It has poor durability and a large amount of rework. In recent years, high-performance polymer waterproof materials have developed rapidly, improving the waterproof quality. Some of the polymer waterproof materials have poor adaptability to the wet substrate and are used for the repair of leaked parts. Before the construction, the water must be stopped first. It is still necessary to use chemical grouting. Due to the complexity of the chemical grouting process,