摘要
依托海陆域钻孔岩芯资料,结合南通通州湾区域地质、工程勘察资料,分析了南通通州湾基础地质条件、各土层工程地质结构特征、岩土物理力学参数与不良地质体分布情况,讨论了地面沉降、潮流通道稳定性等因素对工程建设的影响,在此基础上对南通通州湾工程地质适宜性进行评价。指出通州湾工程建设需要考虑地面沉降影响,并注意软土及易液化砂土造成的不均匀沉降和局部砂土液化;潮流通道基本保持稳定,但围堤、引桥建设可能改变局部冲淤平衡,建议加强冲淤监测。
Based on drilling core data of both sea and land areas,and the geological and engineering investigation data of the Tongzhou Bay,Nantong,this paper analyzes the basic geologic conditions,the engineering geologic structure characteristics of each soil layer,the physical and mechanical parameters of soil and rock and the distribution of the bad geological bodies in the Tongzhou Bay,and discusses the influence of the ground subsidence and the stability of tidal current channel on the construction. On this basis,the engineering geology suitability of the Tongzhou Bay is evaluated. It is pointed out that the construction of this area should consider the impact of ground subsidence,and pay attention to the uneven settlement and local sand liquefaction caused by soft soil and liquefiable sand. The tidal current channel is basically stable,but the construction of the dike and the approach bridge may change the local scour and silting balance,and it is suggested to enhance related balance monitoring.
作者
葛松
张刚
刘群
赵刚
Ge Song;Zhang Gang;Liu Qun;Zhao Gang(Institute of Geochemical Exploration and Marine Geological Survey,East China Mineral Exploration and Development Bureau,Nanjing 210007,Jiangsu,China)
出处
《地质学刊》
CAS
2018年第2期323-327,共5页
Journal of Geology
基金
中国地质调查局项目(12120113003900)子项目"江苏潮间带水工环地质综合调查"
关键词
工程地质条件
适宜性评价
通州湾
江苏南通
engineering geologT condition
suitability evaluation
Tongzhou Bay
Nantong in Jiangsu
