2011•Journal of Guilin University of TechnologyRequires access
Karst Development Features and Formation Mechanism of Interfluve in Liulan River
Tang Jian-sheng
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Abstract
By analysing the hydrogeology condition and the karst development characteristics of interfluve in Liulan rivers and the karst holes,the study area is divided in different development levels:recharge karst region,recharge-runoff karst region,runoff-discharge karst region.The karst development features are different in the three regions.In recharge karst region,karst develops not so well that karst features are mainly vertical solution crack,with the side of 40 meter deep.Karst develops deeper in recharge-runoff karst region with the depth of about 100 meter,consisting of solution cracks and karst caves.In runoff-discharge region,karst features are rich,with large cave in shallow depth of about 50 meter as the main feature.From recharge karst region to recharge-runoff karst region and runoff-discharge karst region,karst characteristics are controlled by regional groundwater flow system.The theory of groundwater flow system is used to discuss the mechanism of karst formation.