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地下防水工程的保护层,是为了防止防水工程在回填土时被破坏。一般通常作法,主要采用砌筑120mm或240mm砖墙做防护。这种作法主要是工程量大、工期长,同时又要大量使用材料、人工,不方便施工。再者,防水层表面不是绝对平整,回填时,由于侧压力的影响,防水层有可能被挤压破坏。同时,由于砌砖保护墙与主体结构不可能同步均匀沉降,因此也存在将防水层撕裂的可能,给防水工程带来
The protective layer of the underground waterproofing project is to prevent the waterproofing project from being damaged when backfilling the soil. It is generally practiced to use brick walls of 120mm or 240mm for protection. This approach mainly involves large quantities of works and long construction periods. At the same time, it requires a lot of use of materials, labor, and inconvenient construction. In addition, the surface of the waterproof layer is not absolutely flat. When the backfill is performed, the waterproof layer may be damaged due to the influence of the side pressure. At the same time, because the bricklaying protection wall and the main structure cannot be evenly and simultaneously settled, there is also the possibility of tearing the waterproof layer and bring the possibility of waterproofing.