Hypogene karst is a special manifestation of karst development in spatial scale. Intensive study of its development mechanism has significant meaning for engineering construction, shale gas and geothermal exploitation. To reveal the developing pattern of hypogene karst in Huanjiang syncline, karst groundwater at different depths in wells HD1-2 and HD1-4 and karst springs was selected as the research object. Through the analysis of geochemistry and stable isotopes of karst groundwater, it was revealed that the circulation pattern of deep karst water came from the common recharge of meteoric water and fossil water hosted in karst caves, runoff of deep faulting belts and discharge of large karst springs, over Huanjiang syncline, which provides good hydrodynamic conditions for hypogene karst development. Meanwhile, the widely developed faulting belts and structural fissures provide primitive dissolution space. Through the above analysis, the paper constructs a hypogene karst development pattern controlled by the deep cycle of groundwater in Huanjiang syncline.

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广西向江向斜向发育的深水岩溶发育模式

表生岩溶在空间尺度上是岩溶发育的特殊表现。深入研究其发展机理对工程建设，页岩气和地热开采具有重要意义。为揭示Hua江向斜向发育的表生岩溶发育模式，以HD1-2，HD1-4井和岩溶泉不同深度的岩溶地下水为研究对象。通过对岩溶地下水的地球化学和稳定同位素分析，揭示了岩溶深层水的循环模式来自于岩溶洞穴中的陨石水和化石水的共同补给，深部断裂带的径流和大型岩溶泉的排放。 ，在环江向斜上空，为表皮岩溶发育提供了良好的水动力条件。与此同时，广泛发展的断层带和构造裂缝提供了原始的溶蚀空间。通过以上分析，构建了环江向斜地带地下水深循环控制的表生岩溶发育模式。