中国岩溶2017，Vol.36Issue(5)：648-658,11.DOI:10.11932/karst2017y32
桂林毛村地下河流域雨季与旱季定量示踪分析
A quantitative analysis of tracing tests for the Maocun subterranean river basin of Guilin during rainy and dry seasons
摘要
Abstract
This paper selected the typical underground river basin in Maocun village of Guilin,Guangxi for quantitative tracer tests in rainy and dry seasons based on online high-resolution monitoring to depict fine characteristics of groundwater aqueous media.According to the tracer test results and groundwater runoff and distribution characteristics,the Maocun underground river system is divided into Shegengyan and Bian-yan underground river,Dachongli-Beidiping sub-system and Dayanqian sinkholes-Maocun outlet sub-system, which are distributed in upstream and downstream of the Maocun basin,respectively.The experimental tracer study shows that the breakthrough curves (BTC)are featured by steep upward and steep drop pinna-cles,which suggest that the conduits are relatively simple,and have no large turnouts and karst tams devel-oped.Each section of the underground river is generally turbulence which is dominated by convection;the flow velocity and flux in rainy seasons are larger,the average travel time is shorter,and the tracer recovery rates are higher than in dry seasons.The aqueous medium in the middle region is relatively uniform,and has no conduit developed.Groundwater is mainly stored in karst cracks.关键词
岩溶地下河/示踪试验/管道结构/水力参数/桂林毛村Key words
karst subterranean river/tracing test/conduit texture/hydraulic parameter/Guilin Maocun分类
天文与地球科学引用本文复制引用
黄芬,尹伟璐,胡晓农,曹建华..桂林毛村地下河流域雨季与旱季定量示踪分析[J].中国岩溶,2017,36(5):648-658,11.基金项目
国家自然科学基金重点项目(41530316) （41530316）
广西自然科学基金(2016GXNSFAA380034) （2016GXNSFAA380034）
中国地质调查局地质调查项目(12120113005300) （12120113005300）
