基于Biot固结理论的地面沉降研究综述  

A review of land subsidence based on Biot consolidation theory

作　　者：孔祥如[1] 罗勇[1,2] 赵龙[1] 齐鸣欢 田苗壮 王新惠[1] 沙特 KONG Xiang-Ru;LUO Yong;ZHAO Long;QI Ming-Huan;TIAN Miao-Zhuang;WANG Xin-Hui;SHA Te(Beijing Institute of Hydrogeology and Engineering Geology, Beijing 100195, China;Institute of Geology and Geophysics, Chinese Academy of Science, Beijing 100029, China)

机构地区：[1]北京市水文地质工程地质大队,北京100195 [2]中国科学院地质与地球物理研究所,北京100029

出　　处：《上海国土资源》2017年第3期74-77,共4页Shanghai Land & Resources

基　　金：北京市科技计划课题(Z131100005613022);北京市自然科学基金项目(8162043);北京市地面沉降监测系统年运行费项目(PXM2015-158305-000011;PXM2016-158305-000004);基于北斗卫星的地面沉降监测(121211220184);通州城市副中心地区重大地质问题调查与评价项目地面沉降专题(PXM2016-158203-000008)

摘　　要：城市地面沉降与地下水开采引发的饱和土体压缩固结密切相关,Biot固结理论准确的描述了孔隙水压力消散与土体骨架变形的相互关系,以该理论为基础建立的多孔介质流固耦合模型在地面沉降数值计算中得到了广泛的应用。在调研大量相关文献后,对Biot固结理论研究进展和获取Biot系数的试验方法等方面进行了系统的总结和阐述,综述了国内外以为Biot固结理论基础的地面沉降研究成果,认为其能较好的反映地面沉降的真实规律,同时提出Biot固结理论在饱和土体的各向异性、应力应变本构关系方面与土体的实际变形特性存在差异等问题,因此仍具有进一步研究和完善的空间。Urban land subsidence is closely related to saturated soil compression and consolidation,induced by groundwater exploitation.Biot consolidation theory describes the interrelation between the vanishing of pore water pressure and the deformation of the soil mass skeleton.This review systematically presents the research progress of Biot consolidation theory,including the experimental method of obtaining the Biot coefficient.The research results of the application of Biot consolidation theory at home and abroad are summarized in this review.Biot consolidation theory is thought to better reflect the true law of land subsidence.This review also proposes that Biot consolidation theory has differences with actual deformation behavior in saturated soil anisotropy and the stress-strain dynamic constitutive relationship.These research topics need future study and analysis.

关 键 词：地面沉降 BIOT固结理论 流固耦合 Biot系数 

分 类 号：P642.26[天文地球—工程地质学]