摘要
广东省惠东县松坑荷寿下铁矿区因长期开采引发地面沉降、塌陷等一系列环境地质问题.矿区发生大型地面塌陷之面积达2300m^2,深1～4m,地下水水位变化规律反映出地面塌陷的发展趋势：一般在塌陷前6d水位明显下降;4d下降幅度为67.4%;前2d水位急剧下降,下降幅度为109.4%.由此通过矿区地下水水位观测,可以预警、预报地面塌陷,从而减少因地面塌陷所造成的损失.
A series of environmental and geological issues such as grount settlement were caused by the long-term exploitation of iron ore field in Songkengheshouxia in Huidong County, Guangdong Province. A great-scale ground collapse occurred in the process of the assessment of geological in this mine field with the area of 2300m2 , depth of 1 - 4m. un Ground-watertable, can reflect the developing trend of ground collapse： Normally, the water table will fall evidently 6 days before the cave-in of grade, the extent of fall in 4 days is 67.4%, and the water table 2 days before will fall sharply, with the degree as 109.4% .Thus the early-warning and prediction of land the mine field to reduce the loss resulted from the ground collagse can be made by the observation og Ground water-table of cave- in.
出处
《中国地质灾害与防治学报》
CSCD
2006年第2期156-159,共4页
The Chinese Journal of Geological Hazard and Control
关键词
矿区
地面塌陷
预报机制
地下水位下降
广东荷寿下铁矿
mining area
land collapse
prediction mechanics
fall of groundwater table
Heshouxia Iron Mine, Guangdong Province
