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近年来,随着社会发展和建筑工程的推进,湿陷性黄土地区的深基坑越来越多,其深度不仅超过5m,达10m以上亦不罕见,尤其是超高层建筑的基坑。深基坑室外回填材料用黄土较多,场地的湿陷性和高填土使室外回填存在诸多质量、安全隐患,施工时须注意警惕。1.地下室外防水建筑地下室外一般都设有防水层,故采用防水卷材较多。由于深基坑施工操作面狭小和施工质量监督管理缺失,防水卷材粘
In recent years, along with the development of society and construction engineering, deep foundation pits in collapsible loess area have been more and more. Its depth is not only more than 5m, not exceeding 10m above average, especially for foundation pits of super tall buildings. Deep foundation pit for backfill material with more loess, the site of collapsible and high fill so that there are many outdoor backfill quality, security risks, the construction must pay attention to vigilance. 1. Underground outdoor waterproof construction underground generally have a waterproof layer, so use more waterproof membrane. Due to the small excavation of deep foundation pit construction and the lack of supervision and management of construction quality, waterproofing membrane sticky