摘要
根据７０年代以来的地下水动态监测和地形变监测资料，计算了河北平原不合理开采地下水引起的地下水水位下降和区域地面沉降。随着水位下降，沉降速率明显加快，由７０年代５ｍｍ／ａ增加到９０年代８６ｍｍ／ａ；从山前到滨海平原逐渐加重，海岸带地区累积地面沉降量达２００～５００ｍｍ，沉降中心达５００～１９６０ｍｍ。在分析形成条件和影响因素基础上，预测了２０１０年沿海地区地面沉降量，提出了控制减缓河北平原，尤其是沿海地区地面沉降的对策与措施。
On the basis of the observation data of groundwater and land deformation since 1970’s,the drawdown of groundwater table and the regional land subsidence induced by the extensive groundwater exploitation have been evaluated in Hebei plain of China With the drawdown of ground water table,the average rate of land subsidence was accelerated from 5mm/a of 1970s to 86mm/a of 1990s Land subsidence increased gradually from the front area of the Taihang mountain to the coastal plain Since 1970s,the cumulative subsidence have reached 200 500mm and the maximum subsidence reached 500～1960mm in the coastal plain By the year of 2000,the land subsidence has been predicted and the counter measures have also been presented in the coastal plain
出处
《中国地质灾害与防治学报》
CSCD
1998年第S1期232-238,共7页
The Chinese Journal of Geological Hazard and Control
关键词
河北平原
地面沉降
防治对策
land subsidence countermeasure Hebei plain
