赣南青塘盆地岩溶塌陷发育特征及防治建议  

Development Characteristics and Prevention Suggestions ofKarst Collapse of Qingtang Basin in Southern Jiangxi

作　　者：刘前进[1] 黄旭娟 何文城 LIU Qianjin;HUANG Xujuan;HE Wencheng(Geology Investigation Institute of Jiangxi Province,330030,Nanchang,PRC)

机构地区：[1]江西省地质调查研究院,南昌330030

出　　处：《江西科学》2021年第5期844-850,888,共8页Jiangxi Science

基　　金：中国地质调查局地质调查项目“赣江流域水文地质调查”(DD20190329)。

摘　　要：通过1∶5万水文地质和环境地质调查,利用物探、钻探等手段研究赣南青塘盆地岩溶塌陷地质特征及其发育规律。结果表明,岩溶塌陷主要沿盆地河流两岸及其低洼处发育,沿断裂构造带呈带状或串珠状发育,在岩溶水开采区以抽水井为中心呈放射状或扇状发育。综合分析认为,岩溶塌陷形成的整个过程所需时间长短主要取决于地下水水位变幅、频率、土体崩解率、土体厚度以及地下岩溶的规模、连通性等,其中抽水引起的塌陷形成所需的时间一般较短,受自然因素引起的塌陷所需时间相对较长。在综合分析岩溶地面塌陷的类型、分布、规模、历史过程及其危险性的基础上,对青塘盆地进行了易发性分区评价,并针对性提出相应的防治对策建议,为城镇化建设和环境保护提供参考。Through 1∶50000 hydrogeological and environmental geological survey,this paper studied the geological characteristics and development regularity of karst collapse of Qingtang basin in southern Jiangxi by the methods such as geophysical exploration,drilling,etc.The results showed,the karst collapse mainly developed along the banks of the river and in the low-lying areas of the basin,the collapse developed with belt-shaped or beads-shaped along the fault structure belt,the karst collapse developed with radiation or fan-shaped centered at pump well in Karst water mining area.By comprehensive analysis this paper considered,formation time of karst collapse was long or short,it mainly depended on variation and frequency of groundwater level,soil disintegration rate,soil thickness,scale and connectivity of underground karst,etc,formation time of karst collapse caused by pumping was generally short,formation time of karst collapse caused by natural factors was relatively long.Based on type,distribution,scale,historical process and risk of karst collapse,this paper did prone partition evaluation in Qingtang basin,and pointed proposed corresponding countermeasures and suggestions,provided references for urbanization construction and environmental protection.

关 键 词：地质调查 岩溶塌陷 地下水 防治建议、赣南青塘 

分 类 号：P642.2[天文地球—工程地质学] X141[天文地球—地质矿产勘探]