| 滇东断陷盆地南洞岩溶地下水系统地下河水文动态特征与资源量评价 |
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| 关键词:Nandong underground river karst water system hydrological dynamic characteristics water resources evaluation development and utilization |
| 基金项目:国家重点研发计划课题(编号: 2016YFC0502502; 2017YFC0406104);中国地质调查局地质调查项目(编号: DD20190334; DD20190825) |
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| Underground River Hydrological Dynamic Characteristics and Resource Evaluation of the Nandong Karst Water System in East Yunnan Faulted Basin |
| In this paper, the authors analyzed underground river hydrological dynamic characteristics of the Nandong karst water system in east Yunnan faulted basin and inferred the structure features of the Nandong karst water system. This system can be divided into four subsystems according to the lithological structure, the development of underground rivers, and the relationship between fill paths and rows. The rainfall infiltration coefficient method and the runoff modulus method were used to calculate the natural water resources of the Nandong karst groundwater system. The calculation results were 356 107 000 million m3/a and 33 602 200 m3/a, respectively. The dry season runoff modulus method was used to calculate the recoverable resources of the Nandong karst groundwater system. The calculation result was 234 073 000 m3/a, and the recoverable resources were huge. Under the condition that the natural supply of the Nandong Underground River was cut off, the adjusted storage capacity consumed in 120 days was 45 033 000 m3, and the daily allowable mining resources of the Nandong Underground River were 494 000 m3/d. Under the condition of impoundment of No. 2 underground river, the daily allowable mining volume in the upper reaches of the reservoir area was 759 000 m3/d. The storage capacity comes from engineering design, and the degree of resource assurance was high. This study can provide a scientific basis for the development, utilization and deployment of Nandong karst groundwater resources. |
| ZHAO Yi,LI Yan-qing,LI Jun,LIU Peng,LAN Fu-ning.2021.Underground River Hydrological Dynamic Characteristics and Resource Evaluation of the Nandong Karst Water System in East Yunnan Faulted Basin[J].Acta Geoscientica Sinica,42(3):324-332. |
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