1 现浇地下墙的不足 在上海地区,将地下连续墙作为深基础的围护结构已较为普遍,但现浇的地下墙也存在着一些不足: 1.1 由于混凝土是在水下浇筑,混凝土中很容易夹泥,造成墙面的无规则渗水。 1.2 施工操作如有不当,会发生混凝土堵管,严重的甚至会发生断墙。 1.3 当土层软弱或为砂性土时,如果泥浆护 1 The insufficiency of cast-in-place underground walls In Shanghai, it has become common to use underground continuous walls as a deep-envelope containment structure, but in-situ cast-in-place underground walls also have some deficiencies: 1.1 Because concrete is poured under water, concrete is very Easy to trap mud, causing irregular seepage of the walls. 1.2 If there is any improper construction operation, there will be concrete plugging, and even severe walling. 1.3 When the soil is weak or sandy, if the mud is protected