Discussion on Anti-Seepage Technologies in the Construction of Small-Scale Rural Water Conservancy Projects

In order to ensure the sustainable growth of rural economy,it is necessary to carry out further research on small-scale water conservancy projects and solve the seepage issue in rural areas.Based on the application significance of small-scale rural water conservancy projects and the analysis of anti-seepage technologies,along with specific examples,this paper specifically discusses the application of high-pressure jet technology,so as to provide reference for the development of engineering construction.

Joint optimization scheduling for water conservancy projects incomplex river networks

In this study, we simulated water flow in a water conservancy project consisting of various hydraulic structures, such as sluices, pumping stations, hydropower stations, ship locks, and culverts, and developed a multi-period and multi-variable joint optimization scheduling model for flood control, drainage, and irrigation. In this model, the number of sluice holes, pump units, and hydropower station units to be opened were used as decision variables, and different optimization objectives and constraints were considered. This model was solved with improved genetic algorithms and verified using the Huaian Water Conservancy Project as an example. The results show that the use of the joint optimization scheduling led to a 10% increase in the power generation capacity and a 15% reduction in the total energy consumption. The change in the water level was reduced by 0.25 m upstream of the Yundong Sluice, and by 50% downstream of pumping stations No. 1, No. 2, and No. 4. It is clear that the joint optimization scheduling proposed in this study can effectively improve power generation capacity of the project, minimize operating costs and energy consumption, and enable more stable operation of various hydraulic structures. The results may provide references for the management of water conservancy projects in complex river networks.

Evaluation index system for positive operation of water conservancy projects

The conditions for the positive operation of water conservancy projects are described in this paper. A scientific and effective evaluation index system was established based on frequency analysis, theoretical analysis, and expert consultation. This evaluation index system can be divided into six first-level indices： the degree to which facilities are intact and functionality standards are reached, the status of operation and management funds, the rationality and degree of advancement of the management team structure, the adaptability and rationality of the water conservancy project management system, the degree of automatization and informationization of the management techniques, and the conduciveness of the exterior environment. The weights for evaluation indices were obtained through the analytic hierarchy process method with consideration of the difference between public welfare and profit-oriented water conservancy projects. This study provides a scientific method for evaluating the positive operation of water conservancy projects.

A Study on Cost Control of Agricultural Water Conservancy Projects Based on Activity-based Costing

Based on the theory of activity-based costing and the idea of value chain,activity optimization and cost control are carried out on the whole construction process of agricultural water conservancy projects. Through the use of literature review,case analysis and statistical analysis and other methods,with agricultural water conservancy projects as the research object,and comparing activity-based costing with the traditional model of cost accounting,the writer carries out the corresponding value chain analysis,and comes to the following conclusion: the statistical calculation and analysis of the entire construction process based on activity-based costing can accurately and effectively control the costs of water conservancy projects. Through the use of activity-based costing,the cost data of agricultural water conservancy projects is more detailed and accurate,and cost management personnel can also find non-value-added activities,optimize the enterprise's value chain and achieve cost control objectives through the analysis of the activity chain and value chain of agricultural water conservancy projects.

River Treatment and Measures in Water Conservancy Projects of Small Farmland

China is country of massive agriculture.Although it has gradually changed from traditionalagriculture to modern agriculture in recent years, thereare still many problems in the transition. Rivers playan important role in water conservancy projects offarmland. Therefore, full attention should be paid toriver management of farmland. This thesis analyzes itand proposes countermeasures for governance.

θ-improved limited tolerance relation model of incomplete information system for evaluation of water conservancy project management modernization

The modernization of water conservancy project management is a complicated engineering system involving a management system, a management method, management personnel, the exertion of social, economic, and ecological effects, and so on. However, indices for evaluating the modernization of water conservancy project management are usually unobtainable in practical applications. Conducting appropriate extension of the classical rough set theory and then applying it to an incomplete information system are the key to the application of the rough set theory Based on analysis of some extended rough set models in incomplete information systems, a rough set model based on the θ-improved limited tolerance relation is put forward. At the same time, upper approximation and lower approximation are defined under this improved relation. According to the evaluation index system and management practices, the threshold for θ is defined. An example study indicates the practicability and maneuverability of the model.

Analysis on Regulation Effect of Water Conservancy Project in Upper Reaches of Wujiang River,Guizhou on Runoff

Based on monthly runoff data of Hongjiadu,Guizhou from October 2013 to June 2015 and monthly runoff data of Yachi River,Guizhou from April 2014 to May 2015,using REOF and multiple linear regression analysis,regulation effect of water conservancy project in upper reaches of Wujiang River on monthly runoff of the river was analyzed. Seasonal temporal-spatial change of monthly runoff in Hongjiadu and Yachi River mainly contained two kinds of modalities. The first modality was that of Yachi River,which was main component of seasonal change of monthly runoff,and peak appeared in July. Space load of Yachi River modality was larger than Hongjiadu,and manual control ability of monthly runoff in Hongjiadu was larger than Yachi River. The second modality was that of Hongjiadu,and peak appeared in December. Space load of Hongjiadu modality was larger than Yachi River,and manual control ability of monthly runoff in Yachi River was larger than Hongjiadu. Seasonal changes of time components of two modalities had significant inverse phase. Regulation effect of Hongjiadu modality advanced Yachi River modality,and regulation effect of water conservancy project in Hongjiadu modality was larger than that of Yachi River modality,and seasonal distribution characteristics of regional rainfall was basically eliminated in Hongjiadu modality. Some seasonal distribution characteristics of regional rainfall were maintained in Yachi River modality. Monthly runoff modality of Yachi River had water storage regulation effect on a smaller part of regional monthly rainfall modality. Monthly runoff modality of Hongjiadu mainly had water storage regulation effect on south-north type of component of regional monthly rainfall,while most components of regional monthly rainfall modality did not have significant impact on monthly runoff modality of Hongjiadu.

Research on performance evaluation of small water conservancy facilities construction project in Hebei Province

This paper takes Hebei province of small water conservancy facilities construction project as the research object, the performance evaluation purposes of construction of farmland water conservancy facilities project, the data sources when carry out performance evaluation, performance evaluation procedures and limitations of farmland water conservancy facilities construction project performance evaluation were discussed.

Discussion on Anti-seepage Wall and Anti-seepage Technology of Water Conservancy Project

The water infiltration problem of water conservancy projects is one of the more common problems in the construction of water conservancy projects,which seriously affects the overall construction quality and safety of water conservancy projects.This article studies the causes of water infiltration in water conservancy projects and introduces related antiseepage technologies,hoping to be a reference for the implementation of anti-seepage projects.Through research,it is found that the factors that cause water infiltration in water conservancy projects include water conservancy project structural changes,environmental factors and construction factors.Relevant personnel can use concrete anti-seepage wall construction technology and high-pressure jet grouting technology to do the relevant anti-seepage work of water conservancy projects.

Research on the Present Situation and Improvement Strategy of Water Conservancy Project Construction Quality Management based on the Quality Efficiency Equilibrium Theory

In this paper, we conduct research on the present situation and improvement strategy of the water conservancy project construction quality management based on quality efficiency equilibrium theory. Water conservancy engineering construction enterprises should refer to oneself circumstance, and the characteristics of the water conservancy project, determine the quality objectives of specific quality assurance plan and the related measures, clear implementation content, methods and effects. Strictly control the factors influencing the water conservancy engineering quality of many aspects, in the process of the water conservancy project construction, to establish a meet the requirements of the technical process and quality standards, operation procedures. Establish the strict appraisal system, continuous improvement and improve the level of construction technique and technology. Establish strict quality assurance system and quality responsibility system, each division, subdivisional work will comprehensively implement in place management to ensure the engineering quality.

Key techniques for evaluation of safety monitoring sensors in water conservancy and hydropower engineering

For the evaluation of construction quality and the verification of the design of water conservancy and hydropower engineering projects, and especially for the control of dam safety operation behavior, safety monitoring sensors are employed in a majority of engineering projects. These sensors are used to monitor the project during the dam construction and operation periods, and play an important role in reservoir safety operation and producing benefits. With the changing of operating environments and run-time of projects, there are some factors affecting the operation and management of projects, such as a certain amount of damaged sensors and instability of the measured data. Therefore, it is urgent to evaluate existing safety monitoring sensors in water conservancy and hydropower engineering projects. However, there are neither standards nor evaluation guidelines at present. Based on engineering practice, this study examined some key techniques for the evaluation of safety monitoring sensors, including the evaluation process of the safety monitoring system, on-site detection methods of two typical pieces of equipment, the differential resistor sensor and vibrating wire sensor, the on-site detection methods of communication cable faults, and a validity test of the sensor measured data. These key techniques were applied in the Xiaolangdi Water Control Project and Xiaoxi Hydropower Project. The results show that the measured data of a majority of sensors are reliable and reasonable, and can reasonably reflect the structural change behavior in the project operating process, indicating that the availabilities of the safety monitoring sensors of the two projects are high

Analysis of Winter Concrete Construction in Water Conservation Project

The construction of water conservancy projects should commence during optimal atmospheric conditions and non-flood period to ensure completion before the flood season begin in summer.In most areas of Northern China,the temperature during winter remain at lower level,in which environmental factors play the most important role in the construction of water conservancy projects.In particular,low temperature directly affects the strength of concrete and delays its solidification,this highly affects the quality and progress of concrete construction.In order to overcome this barrier,better planning,for reasonable and effective construction techniques and targeted control measures should be adopted to reduce the adverse effects of low temperature to assure a strong and safe architecture.

智慧水利理论体系与数字孪生流域虚拟模型研究成果述要

智慧水利是水利高质量发展的显著标志之一。围绕智慧水利理论体系不完善、流域映射精准度不高、模型精度不高、决策支撑程度低等问题,建立了由智慧流域基础理论、数字孪生流域基础理论和智能水网理论框架组成的智慧水利理论体系,研究了由数字孪生感知节点模型、数字孪生降水遥感模型、数字孪生蒸散发遥感模型、数字孪生土壤水遥感模型、数字孪生水体遥感模型、数字孪生地下水遥感模型、数字孪生水质遥感模型组成的数字孪生流域感知模型,构建了由数字孪生流域水文模型、数字孪生水动力水质模型、数字孪生动态调控模型、数字孪生虚拟仿真模型、数字孪生协同决策模型、数字孪生并行组合模型等组成的数字孪生流域虚拟模型。研究成果可为我国智慧水利建设提供理论基础和技术支撑。

数字孪生水利实践案例分析与创新思考

数字孪生水利建设是新阶段水利高质量发展的重要实施路径。概述了数字孪生水网、数字孪生流域、数字孪生工程发展建设基本情况,以数字孪生尼尔基和数字孪生嫩江为例,介绍了数字孪生工程和数字孪生流域建设的成果及技术创新。分析了当前数字孪生水利建设中存在的问题并提出发展建议,以期为加快构建数字孪生水利体系提供参考。

水利工程白蚁防治研究进展

白蚁是一种主要的害堤动物,一直是水利工程安全运行的重大隐患,经济社会的发展和复杂环境的变化对白蚁防治提出了更高的要求。梳理了水利工程白蚁防治中预防、探查、处置三个环节的研究进展,阐述了白蚁防治关键技术的基本原理、适用场景及应用效果;回顾了白蚁监测预警技术的发展过程,介绍了技术原理、系统架构和功能实现;总结了白蚁综合防治技术的实践及探索,探讨了现阶段白蚁防治技术的适用性和局限性。在此基础上提出了对白蚁习性规律、白蚁蚁巢精准探测、白蚁智能监控预警、堤坝动物危害风险评估、白蚁防治综合治理及体制机制建设等研究方向的思考,为促进白蚁防治更加精准高效、绿色智能提供借鉴。

水土保持碳汇项目开发与交易的机制与途径构建

水土保持碳汇具备负碳技术的特性,受到政府和交易主体广泛关注和青睐,未来将在我国碳排放权交易市场中得到广泛应用。从建立碳汇项目开发团队、实施碳汇监测与核算、协调撮合交易和宣传示范等4个方面,总结全国首单水土保持碳汇项目开发与交易的实践探索,提出水土保持碳汇项目开发与交易的机制与途径,包括加强水土保持碳汇基础研究和技术攻关、完善水土保持碳汇监测和核算体系、开展碳汇项目开发和探索碳汇交易途径与机制、建立水土保持碳汇纳入温室气体自愿减排交易机制、建设碳汇项目开发队伍与机构、提升项目开发信息管理水平等6个方面。

新发展理念下的中国水利投融资模式探索

探讨了新发展理念下中国水利投融资模式的现状、挑战与创新;通过分析当前水利投融资模式发展历程,识别现行模式中存在的主要问题,剖析了新发展理念下的融资模式在绿色发展和可持续发展两方面的需求,并分析了现有融资模式在适应新要求方面的能力和局限;通过国际案例研究,比较了美国、荷兰和新加坡等国在水利投融资方面的成功经验和教训,探讨了这些经验在中国的适用性和必要的调整。提出了制定多维度融资策略、推出鼓励创新和可持续水利项目的激励机制以及积极开展水利基础设施REITs试点推广等优化现有水利投融资政策和法规框架的建议。

单镜头倾斜摄影测量技术的应用及精度分析

针对5镜头无人机摄影测量技术在水利工程中的限制,提出一种单镜头无人机采用5航线倾斜测量法,对水利工程进行多角度拍摄,快速建立水利工程实景三维模型的方法。通过对三维模型的平面精度、高度精度进行误差分析,证明消费级无人机在多航线飞行方案下建立的水利工程实景三维模型满足现行《水利水电工程测量规范》和《三维地理信息模型数据产品规范》。

水利工程硕士水沙动力学课程思政建设实践探索

如今,课程思政的教育理念不断深入到各大高校的教学中,该文从课程大纲修订、思政育人元素挖掘、思政教学实践等方面对水利工程硕士的水沙动力学课程思政实践进行研究,探索如何把思政元素融入到课程教学中;创新性地将“课程思政=知识目标+案例讲解+思政目标”的课程思政教学模式融入到教学实践,有意识地结合学院优秀学者的最新研究成果、专业技能在重大工程上的运用,从实际出发培养学生的职业认同感及提高学生的职业责任感。工程学科作为直接作用在社会民生和经济层面的学科,专业课程教学和实践教学与思政教学衔接更加重要,因此,教师在作为教学主体时,应该遵循“育人为本、德育为先、能力为重、全面发展”的育人理念,引导学生能够自主学习,具有适应社会经济发展的能力,拓展国际视野,并能够跟踪本专业及相关领域的前沿技术,具有持续职业竞争力。

不同影像处理方法在大坝施工范围识别中的应用分析

【目的】施工范围是大坝建设过程中施工精细化管理的基础内容,传统的施工范围识别方法主要是人工解译,效率低、成本高、主观性强。将影像智能解译的新方法应用于大坝施工范围识别成为一项有挑战性的技术问题。【方法】以我国贵州省凤山水库为研究区,通过对大坝施工范围特点与现有常用的遥感影像解译方法的分析,针对大坝施工范围具有的区域面积大且连续、地物复杂、人工扰动性程度高等特征,选用高分二号和哨兵二号遥感影像,研究不同的遥感影像解译方法在大坝施工范围自动识别的应用效果。【结果】文中用到的三种方法均取得较好的结果,且分别具有不同的优势。【结论】结果表明,基于影像分割的施工范围识别方法、基于变化检测的施工范围识别方法和基于影像智能分类的施工范围识别方法均能取得较好的识别结果,其中第二种方法最优,且无需人工干预;第三种方法次之,但是方法二和方法三对样本的数量和质量依赖性较高,且存在离散图斑错分的现象;第一种方法容易受阈值的选择和叠加分析的影响,识别精度低于后两种,但是处理流程简单、容易实现。