Because the soft soil is compressible, moisture-bearing, of low strength and of low permeability etc., the settlement of the soft ground becomes one of the key problem in highway engineering.

• 由于软土具有压缩性和含水量大、强度低、透水性差等特点,软基沉降成为高速公路工程的一个核心问题,关系到整个工程的成败。