2013年11月23日,水利部党组书记、部长李国英主持召开部务会议,研究水土保持信用评价工作,审议《关于推进水利工程建设安全生产责任保险工作的指导意见》.
Yunnan Province has implemented a special action project for rural drinking water safety in a total of 3,322 locations.The project covers a population of 14.68 million,effectively addressing the problems faced by 1.0986 million people due to drought-related emergency water supply and 4.7282 million people with unstable water sources.It also enhances the water safety for 0.7903 million people through auxiliary water supply from water wells and 0.7761 million people through pure water well supply.The special action involves multiple engineering projects,and the analysis of supply and demand water volumes requires detailed balancing,which presents significant computational challenges.This paper uses a demand-driven approach to analyze the relationship between the required water supply for different projects and factors such as reservoir capacity and multi-year average river flow.The analysis addresses the issue of supply and demand water volume balance.The analysis shows that the water supply is abundant and sufficient to meet the demand for water.The exploration and application of the method in this paper can effectively address the complex issue of supply and demand water volume balance analysis in the implementation of multiple rural drinking water safety projects and can serve as a reference for similar projects.
The design and control criteria for dam filling construction commonly employ porosity as a measure to control compaction.Porosity calculations rely on specific gravity values,making the accuracy of specific gravity test results crucial for quality control and precision testing during dam filling construction.It is also a vital technical parameter to ensure the construction quality of the dam.This paper analyzes the issues surrounding specific gravity test results in engineering quality control and the key technical factors affecting their precision.It categorizes the various stages of the testing process and results analysis,with the aim of raising awareness among construction units to ensure the quality and long-term stability of dam filling construction and operation.
In a protection and utilization project on Jiangxin Island in the Ganjiang River,an assessment of its impact on riverine flood safety is conducted by employing a two-dimensional hydraulic flow mathematical model to calculate and compare the water levels and flow velocities before and after its construction.The results indicate that under the condition of a 5%annual flood(P=5%),the projected construction has resulted in a water level change in the vicinity ranging from-4 to +5cm.The impact of the proposed construction on the overall flow field in the analyzed river section is relatively minimal,with some influence observed on the flow field in parts of Jiangxin Island and the left and right channels,where the velocity changes range from-26.3 to +22.5cm/s.The protection and utilization project on Jiangxin Island has a relatively minor adverse impact on flood safety in its respective river segment.
水电站截流设计、组织及施工的合理性直接决定着截流成败和整个工程的施工进度.本文以汉江新集水电站现场施工为例,分析了坝址区的地质条件、水文气象,并结合现场地形地貌,确定截流标准、戗堤断面、截流方式、截流物料种类及数量,详细阐述了截流施工规划设计、截流施工情况,可为类似平原型河谷地貌的截流工程提供参考.
