摘要
宜春岩溶区位于萍乡乐平岩溶发育带上,岩溶地层发育,以岩溶地下水为主要水源。为合理地开发利用岩溶地下水,分析了研究区岩溶地下水分布特征、补径排特征、化学特征、动态特征、储水构造、岩溶地下水开发利用现状、岩溶地下水开发利用区划等。结果表明,宜春地区岩溶含水岩组富水性有丰富、较丰富、中等三种类型,岩溶地下水化学类型以HCO3-Ca型为主,流量动态曲线以多峰型、单峰型为主。岩溶地下水储集受地层岩性、地貌、构造等因素影响,构造是主导因素,地下水主要储藏于背斜储水构造、向斜储水构造和断裂储水构造。区内地下水开发需因地制宜,分宜(操场、高岚)侵蚀堆积平原区隐伏岩溶含水层多,储水条件好,可直接引流扩泉或井采;中南部多为溶丘谷地、洼地区,工程地质条件复杂,以引水、扩泉、截流为主,井采为次。墨山田心侵蚀堆积平原区是岩溶塌陷地质灾害的易发和高发区,应限制性开发隐伏岩溶地下水。
Yichun karst area is located in Pingxiang-Leping karst zone,where karst groundwater is the main source of water.In order to develop karst groundwater reasonably,the distribution characteristics,the recharge characteristics,chemical characteristics,storage structure,dynamic characteristics,development and utilization status,and the development and utilization regionalization of karst groundwater had been analyzed.The results show that water abundance of the karst aquifers has three types including medium,relatively rich and rich,the chemical type of karst groundwater is mainly HCO3-Ca,and the flow dynamic curve types are mainly multi-peak and single-peake.The karst groundwater reservoirs are dominated by the lithology,geomorphology and tectonic,among which the tectonic is the dominant factor.The karst groundwater mainly stored in the anticline,the syncline and the fault.The karst groundwater development methods need to be adapted to the local conditions.Fenyi eroded and accumulated plain with better concealed karst aquifers where flood storage and well mining are suitable for karst groundwater development.The central and southern parts of the study area are mainly karst hills,valleys and depressions,where the engineering geological conditions are complex.The utilization of karst water mainly includes water diversion,spring expansion and closure,followed by well mining.Moshan-Tianxin erosion accumulation plain area is the prone and high-risk area of karst collapse geological disaster,so the development of buried karst groundwater should be restricted.
作者
方俊华
谢振东
黄锦
钱正江
FANG Jun-hua;XIE Zhen-dong;HUANG Jin;QIAN Zheng-jiang(Geological Survey of Jiangxi Province, Nanchang 330030, China)
出处
《东华理工大学学报（自然科学版）》
CAS
2020年第3期263-270,共8页
Journal of East China University of Technology(Natural Science)
基金
中国地质调查局项目([2014]02-004-001-05)。
关键词
岩溶区
地下水
特征
开发利用建议
karst distriction area
groundwater
characteristic
suggestions for exploitation
