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为什么地下室会大面积严重漏水呢？有什么预防或者解决办法吗？ - 工程施工 - 项目管理 - 氿上知道
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(1)混凝土配合比及施工质量不良，存在灌通的孔洞；
(2)由于各种原因使地下室出现裂缝；
(3)防水涂层施工质量不好或防水涂层延伸性不够，而造成防水层拉裂。
堵漏措施：
除可采用壁内和壁后注浆，防水混凝土贴壁衬砌、水泥砂浆，挂网水泥砂浆抹面等复杂方法外，也可采用SW塑钢浆和橡皮砂浆组合，先引流排水，然后填缝堵洞，杜绝渗漏。
第一:可能是地基沉降不均导致裂缝较多。
第二：地板混凝土有问题，强度不足。
第三：配筋不合理，（施工单位往往会搞反了，也没人查出来）
解决的办法有：先捡漏水厉害的部位高压注浆，最后做一遍内防水层，中间留出滤水层或导流沟。我以前也是这样处理的，好烦啊，代价付出了不少。