摘要
珠三角平原区地面沉降引发的问题日益突出、潜在危害巨大,给人民生命财产安全构成威胁,地面沉降成因机理值得研究。本文通过全面搜集地面沉降调查监测及岩土工程勘察与土工试验资料,统计了软土的物理力学性质和分布特征,分析了软土厚度与地面沉降速率关系,建立了回归方程,表明该区地面沉降与软土分布密切相关,且软土厚度与沉降速率呈幂函数关系。其可为珠三角平原区地面沉降防治提供技术参考。
The phenomenon of land subsidence in the plains of the Pearl River Delta (PRD) is causing serious problems at present and posing a threat to the safety of people's lives and property. Therefore, the genetic mechanism of land subsidence in the PRD is an important issue that is worth studying. This study collected land subsidence monitoring data, a large number of geotechnical engineering investigation reports and test data, and other statistics to determine the physical and mechanical properties of soft soil and the distribution characteristics, and to analyse the relationship between the thickness of soft soil and land subsidence rate. It established a regression equation to examine the effects of the return to a significant degree, which showed that land subsidence in the area is closely related to the soft soil, and that the thickness of soft soil and sedimentation rate assume the power function relationship. The findings provide a basis for the study of soft soil type land subsidence in the PRD plains.
作者
王双
严学新
揭江
罗炜宇
王红珊
杨天亮
吴建中
WANG Shuang;YAN Xuexin;JIE Jiang;LUO Weiyu;WANG Hongshan;YANG Tianliang;WU Jianzhong(Guangdong Geological Bureau Fourth Geological Brigade,Guangdong Zhanjiang 524033,China;Key Laboratory of Land Subsidence Monitoring and Prevention,Ministry of Land and Resources,Shanghai 200072,China;Shanghai Institute of Geological Survey,Shanghai 200072,China)
出处
《上海国土资源》
2019年第2期75-79,共5页
Shanghai Land & Resources
基金
国土资源部地面沉降监测与防治重点实验室开放基金课题“珠江三角洲地区地面沉降机理研究”(KLLSMP201801)
关键词
地面沉降
软土
回归分析
珠三角平原
land subsidence
soft soil
regression analysis
Pearl river delta plain
