牡丹江市主城区工程地质的特征与分区

The Study on Engineering Geological Characteristics and Division in Main Urban Area of Mudanjiang City China

对牡丹江市主城区地貌类型、岩土体分布和立体结构特征、主要工程地质问题、承载力分区及工程地质分区进行了调查与研究。结果表明:牡丹江市主城区内地貌按成因类型分为侵蚀—剥蚀低山丘陵区和侵蚀—堆积河谷平原区;土体结构主要分为单层和双层两种结构类型,区内除小部分地区存在淤泥质土不良地质体外,大部分地区天然地基承载力较好;依据地貌和承载力特征,主城区可分为侵蚀—剥蚀丘陵工程地质区、冲积平原工程地质区和洪坡积工程地质区3个工程地质大区。

The geographic types,the distribution of rock and soil,the characteristics of three-dimensional structure,the main engineering geological problems,the bearing capacity division and the engineering geological division of Mudanjiang city are investigated and studied in this paper.The results show that:the landform in Mudanjiang city is divided into erosion denudation in low mountains and hill areas and erosion accumulation in valley plain areas according to the genetic types.Soil structure can be divided into two types:single layer and double layers.The bearing capacity of natural foundation is good in most areas except for a small part of the area with bad geological conditions of muddy soil.According to the characteristics of landform and bearing capacity,the main urban area can be divided into three engineering geological regions:erosion denudation Hill engineering geological area,alluvial plain engineering geological area,and flood slope deposit engineering geological area.