黄石岩水库库区岩溶渗漏分析及评价  

Analysis and evaluation of karst leakage in the reservoir area of Huangshiyan Reservoir

作　　者：蔡旺 李保珠 林志宇 CAI Wang;LI Bao-zhu;LIN Zhi-yu(School of Land and Resource Engineering,Kunming University of Science and Technology,Kunming 650093,Yunnan,China;Key Laboratory of Forecasting and Early Warning of Geological Hazards and Ecological Protection and Restoration in Highland Mountainous Areas,Ministry of Natural Resources,Kunming 650000,Yunnan,China;Sichuan Sichuan Coal Huarong Energy Co.,Ltd,Panzhihua 617000,Sichuan,China)

机构地区：[1]昆明理工大学国土资源工程学院,云南昆明650093 [2]自然资源部高原山地地质灾害预报预警与生态保护修复重点实验室,云南昆明650000 [3]四川川煤华荣能源有限责任公司,四川攀枝花617000

出　　处：《地下水》2024年第4期10-13,共4页Ground water

摘　　要：黄石岩水库地处云贵高原中部滇东高原盆地区之昆明岩溶高原湖盆亚区,区域内岩溶较发育。通过对工程区范围内可疑渗漏段进行勘察,综合库区地质环境条件资料,查明该区域岩溶发育规律及可疑渗漏带,在查明主要渗漏管道及渗漏方式的基础上,使用Visual MODFLOW地下水软件建立三维数值模型进行稳定流模拟,分析水库水体对于地下水渗流场变化的影响,对水库渗漏量进行计算与评价。研究结果认为:黄石岩水库为补排型水库,在金钟村东侧库岸存在岩溶管道(Gd1)和岩溶管道(Gd2),为库区主要排泄通道;库区金钟村东侧河间地块按岩溶渗漏介质分类,兼有岩溶管道和溶蚀裂隙,属于复合型渗漏,渗漏方向为东侧低邻谷(白邑盆地);黄石岩水库上游多年平均径流量为8 073×10~4 m^(3)/a,水库渗漏量估算为1 312×10~4 m^(3)/a,渗漏量约占多年平均径流量的16.3%,属严重渗漏,须采取有效的防渗处理措施。研究结论为后续防渗工作提供理论依据。Huangshiyan Reservoir is located in the central Yunnan-Guizhou Plateau East Yunnan Plateau Basin area of the Kunming karst plateau lake basin sub-area,the region is more developed karst.Through the investigation of the suspected seepage section within the scope of the project area,comprehensive information on the geological conditions of the reservoir area,identify the karst development pattern and the suspected seepage zone in the region,and on the basis of identifying the main seepage pipes and seepage methods,use the Visual MODFLOW groundwater software to establish a three-dimensional numerical model for the simulation of the steady flow to analyse the impact of the reservoir water body on the changes in the seepage field of the groundwater,and calculate and evaluate the leakage volume of the reservoir.The amount of seepage from the reservoir is calculated and evaluated.The study concluded:Huangshiyan Reservoir is a replenishment and discharge type reservoir,and there are karst pipes(Gd1) and karst pipes(Gd2) on the bank of the reservoir on the east side of Jinzhong Village,which are the main discharge channels in the reservoir area;According to the classification of karst seepage media,the inter-river plot on the east side of Jinzhong Village in the reservoir area has both karst pipes and dissolution fissures,which belongs to the composite type of seepage,and the direction of seepage is the east side of the low neighbouring valleys(Baiyi Basin);The average multi-year runoff upstream of Huangshiyan Reservoir is 8 073×10~4 m~3/a,and the leakage from the reservoir is estimated to be 1 312×10~4 m~3/a,which accounts for about 16.3 % of the average multi-year runoff,and is a serious leakage,which is subject to effective anti-seepage treatment measures.The conclusions of the study provide a theoretical basis for subsequent seepage control work.

关 键 词：黄石岩水库 岩溶 渗漏分析 

分 类 号：P641.2[天文地球—地质矿产勘探]