淮北城市地质环境

GEOLOGICAL ENVIRONMENT OF THE HUAIBEI CITY

基于正在进行的淮北市城市地质调查工作,通过野外调查、地质测绘、土样及水样的采集测试、资料收集和综合分析,淮北城市规划区位于淮北凹陷盆地为主要的地质单元,褶皱及断裂构造发育,岩土体及地下水特征明显,土壤地球化学指标良好。由于人类工程活动,地质环境发生了变化,主要是地表水污染较严重,基岩地下水位下降显著,岩溶地下水质稳定,浅层孔隙水严重污染,采空塌陷面积较大,岩溶塌陷及崩塌地质灾害少且规模小。

Based on the on-going geological survey in urban area of the Huaibei City including field survey, geological mapping, soil and water sample collection, data gathering and comprehensive analysis, the planned urban area of the Huaibei City was found situated largely in the Huaibei depressed basin, where folds and faults are developed, rock and soil mass and groundwater features are remarkable, and soil geochemical indices are good. Human engineering activities led to change in geological environment, such as heavy pollution to surface water, abrupt decrease in bedrock groundwater level （karst groundwater quality being stable）, heavy pollutionto shallow pore water and large mining subsidence area （less karst cave-in and collapse and small in size）.