| 云南泸西岩溶断陷盆地水循环系统及水资源循环利用方案 |
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| 关键词:karst fault-depression basin water resources system water recycling ecological hydrogeology Luxi, Yunnan Province |
| 基金项目:国家重点研发计划项目“断陷盆地地表;地下水资源高效利用与优化调控”(编号: 2016YFC0502502) |
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| The Water Circulation System and Water Resources Recycling Plan of the Luxi Karst Fault-depression Basin in Yunnan |
| The Luxi karst fault-depression basin in Yunnan is rich in water resources, but the distribution of water resources is extremely uneven in time and space, and the utilization rate of water resources is low. The topography of the basin is characterized by obvious horizontal division and clear vertical classification. And the basin-bottom sedimentary flat dam area is the benchmark for local upper drainage in the Nanpan River basin. The remaining and restored wetland has the function of regulating and purifying water, and its elevation is close to the water supply demand zone. Therefore, analyzing and constructing a water resource recycling plan for the joint dispatch of surface water and groundwater can effectively improve the utilization rate of water resources. By studying the geological environment conditions and water circulation system of the typical karst fault-depression basin in Luxi, researchers can find out the occurrence of water resources, the amount of exploitable resources, and the current status of development and utilization. Guided by earth system science, applying such methods as system analysis, hydrology and hydrogeological analysis and evaluation, and combined with the restoration, reconstruction and conservation of the Huangcaozhou and Pinghaizi wetlands, the authors propose a plan for the recycling of water resources in the karst fault-depression basin. The first is the restoration, reconstruction and conservation of the Huangcaozhou wetland ecology, using physical, biological, and chemical measures for water treatment and purification, pumping water for production, and agricultural irrigation recycling, forming an ecological restoration project—resource recycling plan; the second is to use the Gongnong tunnel to adjust and store the uneven waterlogging in time and space, drawn from the Pinghaizi reservoir, for irrigation in the dry season and power generation in the rainy season, thus effectively improving the level of water recycling in the karst fault-depression basin. There are many karst fault-depression basins in Yunnan, and hence wetlands or purification ponds can be built in the lower reaches of the basin to treat domestic sewage and surface water, pump and transport water, and use tunnels to divert and store waterlogging for drought relief, so as to solve the problem of uneven water resource utilization in time and space. This plan has strong operability and good prospects for popularization and application in fault-depression basins. |
| ZHANG Hua,WANG Bo,WANG Yu,ZHANG Gui,HE Rao-sheng,DAI Xu-sheng,KANG Xiao-bo,LAN Fu-ning.2021.The Water Circulation System and Water Resources Recycling Plan of the Luxi Karst Fault-depression Basin in Yunnan[J].Acta Geoscientica Sinica,42(3):313-323. |
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