一、前言填土地基至今应用不普遍,其原因之一是人们思想上普遍认为“填土不如老土”,“填土不经过二三年自重固结不能作为持力层”,因此,深埋到老土的深基方案已逐渐被人们认作安全保险的习惯作法,由此引起的大量人力物力的浪费,亦很少被人重视。近年来, I. INTRODUCTION One of the reasons why landfills have not been widely used since the filling of lands to date is that people generally think that “filling is not as good as old land” and “filling without self-weighting for two or three years cannot be used as a supportive layer”. The deep-rooted scheme that has been buried in old land has gradually been recognized as a customary practice for safety insurance. The amount of manpower and material waste that has been caused by this has rarely been taken seriously. In recent years,