广州南沙龙穴岛北部地质特征分析及工程适应性评价  

Analysis on the Geological Characteristics and Engineering Adaptability Evaluation of Northern Longxue Island in Nansha,Guangzhou

作　　者：周明文 李磊 Zhou Mingwen;Li Lei

机构地区：[1]广州市设计院集团有限公司 [2]广州建筑股份有限公司 [3]广州市建筑集团有限公司

出　　处：《城市建筑》2024年第24期223-226,共4页Urbanism and Architecture

基　　金：住房和城乡建设部科学技术计划项目(2022-K-039);广东省住房和城乡建设厅科技计划项目(2020-K5-144658);广州市建筑集团有限公司科技计划项目(2021-KJ006,2024-KJ084);广州市设计院集团科技计划项目[24RD22(B1),24RD23(B1),24RD24(B1)]。

摘　　要：本研究分析了广州市南沙区龙穴岛北部的地质特征及其工程适应性。根据勘测资料,描述了该地区的地质条件概况。还进行了一系列的室内试验,从基本的物理力学指标、有机质含量、高压固结表现、渗透性、无侧限的抗压强度五个方面的试验结果,揭示了该地区地基上部的黏性土(特别是淤泥和淤泥质粉质黏土)具有高含水率、高压缩性、强度低、欠固结、触变性和流变性等工程特性。本研究旨在为后续工程提供基础数据和科学指导。This paper analyzes the geological characteristics and engineering adaptability of the northern part of Longxue Island in Nansha District,Guangzhou.Based on survey data,an overview on the geological conditions in the area is provided.A series of laboratory tests were conducted,including basic physical and mechanical indicators,organic matter content,high-pressure consolidation behavior,permeability,and unconfined compressive strength.The results reveal that the cohesive soils in the upper foundation layers,particularly the mud and silty clay with mud,exhibit high water content,high compressibility,low strength,under-consolidation,as well as thixotropic and rheological properties.This paper aims to provide basic data and scientific guidance for subsequent engineering projects.

关 键 词：龙穴岛 地层特征 地质条件 物理力学指标 工程评价 

分 类 号：TU42[建筑科学—岩土工程]