【摘要】 广州经济高速发展,人口、资源和环境的矛盾日益突出,地质环境渐趋恶化,地质灾害频繁发生,崩塌、滑坡和地面塌陷等严重阻碍了城市的可持续发展。就这些地质灾害而言,活动断裂纵横交错是其地质构造基础,强烈风化与疏松地表是其物质来源,降水与径流量丰沛是其动力条件,暴雨、洪水则是其诱发因素。人类活动,如过量抽取地下水、乱采滥伐森林植被等增加了地质环境的压力,破坏了生态平衡,成为重要的致灾因子。广州城市地质灾害在过去10年里呈波浪状上升态势,1998年以来尤为严重;空间上主要集中在老城区、广花盆地和低山丘陵区。更多还原

【Abstract】 Economy in Guangzhou is developing rapidly,the contradictions among population,resources and environment are outstanding and the geological environment worsens day by day,the geological disasters frequently take place and seriously hinder the sustainable development of the city.In respect to the disasters,active faults are their structure foundation,the strongly weathered surface provides them with material conditions,rich precipitation and run-off are their power source,torrential rain and flood are their important triggering factors.Human activity brings the pressure to the geological environment because of using the groundwater excessively and denuding the forest arbitrarily.Mankind destroys the ecological balance and becomes important disaster-causing factor.Urban geological disasters in Guangzhou are more and more serious in the past ten years.There are two peak periods in 1996-1998 and 2000-2002.Spatial distribution of the disasters is centered on the old town and basin mainly,spreading to surrounding hills.更多还原