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各种地质成因类型的胀缩土层,一般可分成两部分:1.胀缩变形急剧层,位于地表某一深度的范围内,胀缩变形频繁,幅度较大,基础若置于此层上,会导至建筑物严重破坏;2.胀缩变形稳定层,位于胀缩变形急剧层的下部,胀缩变形缓慢,幅度较小,基础若置于此层上,建筑物则免于破坏。本文的目的即利用一些工程地质特征与土层的地温、含水量、分层变形观测等数据相比较,从而找出这些工程地质特征与胀缩变形稳定层的埋深的相互关系,并以此向设计人员推荐合理的基础埋深。
A variety of geological genetic types of shrinkage soil layer, generally can be divided into two parts: 1. The sharp layer of expansion and contraction deformation, located in a certain depth of the surface, the expansion and contraction deformation is frequent, the magnitude is larger, the foundation if placed on this layer , will lead to serious damage to the building; 2. expansion and contraction deformation and stability layer, located in the lower part of the expansion and contraction deformation layer, the expansion and contraction deformation is slow, the extent is smaller, if the foundation is placed on this layer, the building is free from damage. The purpose of this paper is to use some engineering geological features to compare the ground temperature, water content, and layered deformation observation data, so as to find out the relationship between these engineering geological features and the depth of the expansion and contraction deformation stable layer, and use this Recommend a reasonable foundation depth to designers.