汉口地区浅层粉土对深基坑开挖的影响

• 作 者: 张杰清 戚辉 汤晓光
• 机 构: 武汉市勘测设计研究院,武汉市勘测设计研究院,武汉市勘测设计研究院
• 出 处: 城市勘测
• 发表日期: 1997年01期
• 关键词: 基坑开挖 浅层 粉土层 漫滩 止水帷幕 深基坑 顶板埋深 建筑物基础 半刚性桩 高压注浆

汉口地区浅层粉土主要分布在长江、汉江漫滩及Ⅰ级阶地,多埋藏在上部淤泥、淤泥质粘性土的上下及其间,埋深5～12m,在江河高漫滩地段,上层粉土多埋藏于填土层,粘性土下,顶板埋深1～3m。粉土层中一般夹有粘性土或砂土薄层或互层,呈层状或千枚层结构。粉土层厚一般为2～5m,薄者

The shallow silt in the Hankou area is mainly distributed on the Yangtze River, the floodplain of the Han River and the Class I terraces. It is buried in the upper and lower parts of the silt, silty clay soil and between them, with a depth of 5 to 12m. In the floodplain of the river, the upper silt More buried in the filling layer, cohesive soil, the depth of the roof buried 1 ~ 3m. In the silt layer, there is generally a thin or interbedded layer of cohesive soil or sand, which is layered or a thousand-layer structure. Silt layer thickness is generally 2 ~ 5m, thin