摘要
本文将天津市１９６６年到１９９２年共计２６ａ的精密水准资料，划分为７期，作出相应年代的地面沉降速率图，深入研究地面沉降灾害的特征，揭示了天津外环线以内市区地面沉降从６０年代开始出现至８０年代末，已发展到十分严重的地步。１９８５年以后天津市开展了地面沉降的防治工作以后，沉降灾害得到了明显的控制，显示了防治城市地质灾害的重要意义。
Based on the data of precise leveling survey from 1966 to 1992,some rate contour maps of ground subsidence corresponding to the periods have been drawn in the Tianjin city.The features of ground subsidence also have been studied deeply.
出处
《灾害学》
CSCD
1994年第3期72-75,共4页
Journal of Catastrophology
