摘要
通过沧州地面沉降重点区水文地质工程地质综合试验孔土样试验结果,以点带面地分析了土样各物理指标之间的相关性,土体的颗粒结构,土体随深度和压力变化的压缩变形规律性,以及不同深度粘性土体的渗透特征。分析显示土样的各物理指标之间存在很强的相关性,土体的压缩性随压力和深度的变化有很强的规律性。含水层和粘性土的渗透系数差了6个数量级,间接表明地面沉降具有很强的滞后作用。分析结果将对深入研究沧州地区地面沉降的成因规律及客观地评价地面沉降发展趋势提供数据参考和科学依据,进而为研究有效遏制地面沉降发展趋势的防治措施提供技术支撑。
Soil samples were taken from the subsidence area in Cangzhou city and tested in laboratory.According to the test results,this paper analyzed relations among physical parameters of soil samples,granular structure of soil,compression deformation laws of soil with depth and pressure,and permeability characteristics of clay at different depths.The analysis shows that strong relations exist among different physical parameters,and good laws of compression with depth and pressure are found for soil samples.The hydraulic conductivities of clay are six orders of magnitude smaller than those of the aquifer,indicating the strong hypothesis of land subsidence.The analysis in this paper provides data and scientific basis for further study on mechanism of land subsidence in Cangzhou and objective evaluation of its development trend,and then provides technical support for study on prevention and control measures to efficiently inhibit the development trend of land subsidence.
出处
《武汉理工大学学报》
CAS
CSCD
北大核心
2014年第5期111-117,共7页
Journal of Wuhan University of Technology
基金
中国地质调查(12120113011700)
国家重点基础研究发展计划(2010CB428806)
关键词
沧州
粘土体
地面沉降
压缩变形
渗透特征
Cangzhou
clay
land subsidence
compression deformation
permeability characteristics
