一、天津市浅层土工程地质概述天津市地处华北平原北部。是新华夏系的沉降地带,地势低平。回溯天津的成陆。据地质部门研究指出,距今已十万年,曾有三次海进和海退,此三次海进和海退期间,形成了现地面以下约100米厚的三组陆海交替的六个主要土层。对于天津市区的一般中小型工程,则只需了解30米以内土层分布规 I. Overview of shallow earth engineering geology in Tianjin Tianjin is located in the northern part of North China Plain. It is a subsidence zone of the New Cathay Pacific Department. The terrain is low and flat. Looking back at Tianjin’s Cheng Lu. According to the study of the Geological Department, 100,000 years ago, there were three seaward and retreating seas. During the three sea inlets and sea retreats, six major groups of land and sea alternated about 100 meters below the present ground were formed. Soil layer. For general small and medium-sized projects in Tianjin, you only need to understand the distribution rules of soil within 30 meters.