一、浅地基的改善按地基改良原理,对浅地基的改善可分为物理改善和化学改善两种方法。对人造陆地、河川、运河、湖泊的堆积土形成的地基以及处理工业废料的场地,广泛采用浅地基的改善方法。这类地基比以往所谓的软地基软弱得多,故称其为超软地基。如果地基土的含水量超过液限,容重在1.5吨/米~3以下,粘结力小于1.0吨/米~2时,应将这类地基列为超软地基的范畴。 First, the improvement of shallow ground improvement principle according to the foundation, the improvement of shallow ground can be divided into physical improvement and chemical improvement of two methods. As for the foundations of artificial land, rivers, canals and lakes, as well as for the disposal of industrial wastes, shallow ground improvement methods are widely used. This kind of foundation is much weaker than the so-called soft ground in the past, so it is called ultra-soft ground. If the foundation soil moisture content exceeds the liquid limit, the bulk density of 1.5 tons / m ~ 3 below, the adhesive force of less than 1.0 tons / m ~ 2, should be classified as such superfine soft ground areas.