中国地质调查2026，Vol.13Issue(1)：52-62,11.DOI:10.19388/j.zgdzdc.2025.143
福建宁化蛟湖岩溶湖地质成因
Geological genesis of Jiaohu karst lake in Ninghua of Fujian Province
摘要
Abstract
Jiaohu karst lake is located in Hucun Basin of Ninghua County in Fujian Province.It is a special type of karst landform,and the formation of karst lakes is closely related to its climatic conditions,hydrological condi-tions and geological history.The geological genesis of Jiaohu karst lake is an important basis for studying the tec-tonic uplift and the development and evolution of underground water systems in karst areas of the northwest Fujian Province.Through analyzing the geological background and karst development characteristics,the authors adopted a comprehensive geophysical exploration method based on high-density electrical method and multibeam bathym-etry system for unmanned vessels.The tectonic development location,spatial morphological characteristics and depth information of hidden karst were detected by high-density electrical method.The distribution and extension of water flowing channel in Jiaohu karst lake were detected and two hidden karst groundwater run-off bands were presumed.The underwater terrain data was obtained by scanning the multibeam bathymetry system for unmanned vessels,and the underwater three-dimensional morphological model of the karst lake was constructed.The shape and position of two infundibula form channels in the karst lake were detected to realize the accurate tracking and positioning of the water flowing channels.The trend of two concealed karst groundwater runoff zones in the study area and their relationship with Jiao karst lake were identified,and the water supply channel and supply source of Jiao Lake were analyzed,indicating that the karst area of Jiao lake had close connection with groundwater system and the karst channels were complex.With the intermittent tectonic uplifting since Pleistocene,the groundwater system flowed to the deep,resulting in the reducing erosion base level.This would further cause karst collapse formed by the erosion of groundwater seepage.The deep water flowing channels were connected with underground water,which was a special karst lake formed by water-creep and gravitational-collapse mechanism.The re-search achievements about the infuencing factors of Jiaohu's formation and its geological genetic mechanism could provide scientific basis for the protection and utilization of special karst landscape resources.关键词
岩溶湖/高密度电法/多波束测深/导水通道/地质成因机理/福建宁化Key words
karst lake/high-density electrical method/multi-beam bathymetry/water flowing channel/geo-logical genetic mechanism/Ninghua of Fujian Province分类
天文与地球科学引用本文复制引用
张晓东,邸兵叶,湛龙,唐志敏,刘红樱..福建宁化蛟湖岩溶湖地质成因[J].中国地质调查,2026,13(1):52-62,11.基金项目
中国地质调查局"华东地区自然资源动态监测与风险评估(编号:DD20230103)""华东地区国土空间用途管制技术支持与应用服务(编号:DD20230495)"及自然资源部部省合作项目"厚覆盖区金多金属矿精确定位技术体系研究(编号:2024ZRBSHZ133)"联合资助. （编号:DD20230103）
