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    江西景德镇城区岩溶塌陷地质特征及防治建议

    Characteristics and prevention measures of karst collapses in the Jingdezhen urban area, Jiangxi Province

    • 摘要: 通过1:5万区域水文地质和环境地质调查,利用物探、钻探等手段研究江西景德镇城区岩溶塌陷地质特征及其发育规律。景德镇城区覆盖型碳酸盐岩基岩面起伏大,浅部岩溶发育,土洞较多,第四系岩性结构复杂,覆盖层厚度一般<20 m,地下水埋藏浅。通过分析该区岩溶塌陷分布特征、形成条件和诱发控制因素,确定抽排地下水是该区岩溶塌陷的主要诱发因素。在预测岩溶塌陷发展趋势的基础上,对可能发生岩溶塌陷的区域进行初步预测,并针对性提出相应的保护和防治措施,为城市工程建设和环境保护提供参考。

       

      Abstract: Through the 1:50 000 regional hydrogeology and environmental geology investigations, geological features and development rule of karst collapses in Jingdezhen urban district, Jiangxi Province were investigated by means of geophysical prospecting,drilling, etc. The carbonate bedrock in the city of Jingdezhen is characteristic of obvious undulation, shallow karst development and a lot of soil caves. The overlying Quaternary strata show complex lithological structure, variable thickness of generally less than 20m, and shallow groundwater. By analyzing distribution, forming conditions and induced controlling factors, it can be concluded that the drainage of groundwater is the main inducement factor for karst collapses in this area. On the basis of predicting the development trend of karst collapses, authors also conducted a preliminary forecast for vulnerable areas of karst collapse, and proposed corresponding protection and prevention measures. This will provide reference for urban engineering construction and environmental protection.

       

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