国际地面沉降研究综述

文章在介绍国际地面沉降会议历史及２０００年第六届国际地面沉隆会议简况的基础上，并根据２０００年第六届国际地面沉降会议论文，对国际地面沉降研究进展情况分成如下六个方面进行了综述。地面沉降地质因素介绍了古代地面沉降、泥炭层沉降、地震砂土液化地面沉降和海平面上升研究状况。地下流体运移地面沉降方面介绍了以地下水开采为主的地面沉降问题及地面塌陷、天然气开采引起的地面沉降、均匀沉降对建筑结构的破坏和欠固结石英

Overview of International Land Subsidence Research

Based on introduction of the history of the international land subsidence symposium and the Sixth International Symposium on Land Subsidenc ( SISOLS 2000 ) and its proceedings ( Ravenna, Ifaly 24-29 Sept.2000) , the recent research situation of the international land .subsidence divided into the following six parts is overviewed in this paper. The geologic issues of land subsidence include ancient land subsidence,peat sinking, land subsidence due to liquefaction and sea level rise. Fluid removal of land subsidence includes land subsidence and collapse due to pumping groundwater, land subsidence due to gas-extraction, structural damage of u-niform subsidence and compaction of a poorly consolidated quantz-rich reservoir sandstone. Solid extraction of land subsidence includes land subsidence due to non-resolvable solid extraction and one due to resolvable solid extraction. Remedies decision-making of land subsidence includes interventions to safeguard the environlnent of the Venice Lagoon, legal afairs and social decision-making of land subsidence. Measuring and monitoring of land subsidence includes soil and rock compressibility, radioactive marker technique and SAR interferometry, and GPS ang GIS application in land subsidence monitoring. Theory and modeling of land subsidence includes prediction of land subsidence due to withdrawal of groundwater, simulation of land subsidence due to groundwater flowing into mine, time-space land subsidence prediction in mine area, predicgion of land subsidence due to gas-extraction and calculation of land subsidence due to phreatic flctuation.