重庆市藻渡水库左岸河间地块渗漏评价

重庆市藻渡河是一条跨省河流，位于四川盆地与云贵高原的过渡带，流域面积大，来水量丰富，地质条件复杂。为了更好地开发利用该河流的水资源，重庆市启动了以藻渡水库（大型）规划为目标的前期研究工作，包括水文、地质条件、淹没方案、开发方案和功能任务等5个方面的专题研究。藻渡水库工程地质条件研究是其中之一。本文在分析库区左岸河间地块地质、水文地质条件基础上，针对不同的地质岩组，将河间地块划分成不同水文地质单元分别进行渗漏评价，细化了评价方式，丰富了评价工作内容，针对性更强，评价结论更可靠。研究结果表明，库区左岸河间地块存在远高于水库初拟蓄水位的地下水分水岭； 藻渡水库蓄水后不会沿河间地块向岭谷松坎河渗漏，为顺利开展下阶段工作奠定了基础。

LEAKAGE EVALUATION OF INTERSREAM BLOCK ON THE LEFT BANK OF THE ZAODU RESERVOIR,CHONGQING CITY

Zaodu river is a provincial boundary river, and the is located in the transition zone of Sichuan Basin and the Yunnan Guizhou Plateau; with large drainage area, rich inflow and complex geological conditions. In order to better development and utilization of the water resource, Chongqing city started Zaodu prophase research of reservoir planning, including five aspects of hydrological, geological conditions, flooding programs, development programs and functional tasks. Study on the engineering geological conditions of reservoir is one of them. Based on the analysis of reservoir geological and hydrogeological conditions of left interstream block, for different geological rock group, it is divided into different hydrogeological unit to evaluat, refine evaluation methods, enrich the content of the evaluation. The results show, exists groundwater watershed in left interstream block, is far higher than the water level in the reservoir early. It will not leak to Songkan river after impound, which laid the foundation for the smooth development of the next phase of work.