软土地层下的地铁车站基坑施工——深圳地铁12#线海上田园东站车站基坑施工

Construction of Subway Station Foundation Pit under Soft Soil Layer——Foundation Pit Construction of Haitianyuan East Station of Shenzhen Metro Line#12

天然饱和软土在我国分布较为广泛,以淤泥质高饱和软土最为典型,究其成因大致分为河相沉积型、湖相沉积型和海相沉积型三类,海相沉积型高饱和淤泥质软土主要分布于我国沿海地带,具有含水率高、天然强度低、渗透系数小、触流变性强等特点,工程特性极差,熟悉高饱和软土工程特性和对应工程措施成为当前沿海工程技术人员必须掌握的关键工程技术之一。

Natural saturated soft soil is widely distributed in China,with muddy high saturated soft soil being the most typical.Its genesis can be roughly divided into three types:river sedimentary type,lake sedimentary type,and marine sedimentary type.Marine sedimentary high saturated muddy soft soil is mainly distributed in coastal areas of China,with characteristics such as high water content,low natural strength,low permeability coefficient,and strong rheological properties,and extremely poor engineering characteristics.Familiarity with the engineering characteristics and corresponding engineering measures of high saturated soft soil has become one of the key engineering techniques that coastal engineering technicians must master.