河北省岩溶塌陷的分布与形成特征
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摘要
岩溶塌陷是河北省主要的地质灾害之一,主要分布在唐山、秦皇岛等覆盖型岩溶发育区。唐山市的岩溶塌陷自二十世纪七十代起,共发生岩溶塌陷23处;秦皇岛市岩溶塌陷自柳江水源地投入使用后共发生286处,均分布在水源地降落漏斗范围内。过量开采地下水造成地下水环境恶化是岩溶塌陷产生的根本原因,强烈发育的开口岩溶洞穴、多元混合结构的松散覆盖层土体、降雨、地震等因素都加速了岩溶塌陷的产生。要防治岩溶塌陷,就要从根本上要解决岩溶地下水的合理利用问题,恢复地下水环境的生态稳定,促进资源、环境的可持续发展。
Karst collapse is one of the primary geological hazards in Hebei province,which mainly distributes in Tangshan city and Qinhuangdao city where the covering karst is developing.There are 23 karst collapses in Tangshan city since 1970',and there are more than 286 karst collapses in Qinghuangdao city after Liujiang Water Resource has been used which distributes in the range of the water pin.The over pumping of groundwater is the main reason for the karst collapses,and the heavy-developed karst caves,the loosen overburdened soil body with sandwich structure,rainfall and earthquake accelerate the formation of karst collapses.In order to prevent karst collapse the reasonable utilization of the karst groundwater should be solved and the environment stability of the groundwater should be come back to make the sustainable development of the resource and environment.
Karst collapse is one of the primary geological hazards in Hebei province,which mainly distributes in Tangshan city and Qinhuangdao city where the covering karst is developing.There are 23 karst collapses in Tangshan city since 1970',and there are more than 286 karst collapses in Qinghuangdao city after Liujiang Water Resource has been used which distributes in the range of the water pin.The over pumping of groundwater is the main reason for the karst collapses,and the heavy-developed karst caves,the loosen overburdened soil body with sandwich structure,rainfall and earthquake accelerate the formation of karst collapses.In order to prevent karst collapse the reasonable utilization of the karst groundwater should be solved and the environment stability of the groundwater should be come back to make the sustainable development of the resource and environment.
引文
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