Water Conservancy Construction Research Articles

Digital twin water conservancy early warning system based on physical level and numerical simulation in intelligent water conservancy construction

Abstract. In 2023, the Central Committee of the Communist Party of China and The State Council issued the Overall Layout Plan for the Construction of Digital China, emphasizing the construction of a smart water conservancy system with digital twin basins as the core. The Guangxi Zhuang Autonomous Region government has clearly proposed to actively build a "digital twin Pinglu Canal", and attaches great importance to the construction of digital twin platform application services during the construction of the Western land-Sea New Passage (Pinglu) canal. Aiming at the problems such as unsatisfactory early warning effect, inaccurate data and imprecise model of existing smart water conservancy technology, this paper proposes a digital twin system for disaster early warning based on physical level and numerical simulation technology, establishes a visual digital water conservancy model and digital twin smart water conservancy cloud platform, and combines multi-physics field and multi-dimensional coupling algorithm to respond to technical pain points. To achieve scientific and accurate monitoring and intelligent management, and contribute to the construction of digitally empowered Pinglu Canal.

Remote Sensing and Geospatial Approaches for Studying the Environment Affected by Human Activities

In the past few decades, drastic human activities such as urban expansion, agricultural and pastoral activities, water conservancy construction, deforestation, mining, and tourism have significantly altered regional ecological environments [...]

Overview of the Research Status of Intelligent Water Conservancy Technology System

A digital twin is a new trend in the development of the current smart water conservancy industry. The main research content of intelligent water conservancy is clarified. This paper first summarizes and combs the relevant system architecture of smart water conservancy, and puts forward a smart water conservancy framework based on digital twins, highlighting the characteristics of virtual and real interaction, and symbiosis of the water conservancy twin platform. Secondly, the status quo of intelligent water conservancy “sky, air, ground and water” integrated monitoring technology, big data and artificial intelligence, model platform technology, knowledge graph and security technology is analyzed. From the perspective of application, the research progress of each technology in water security, water resources and hydraulic engineering is reviewed. Although the construction of smart water conservancy has made remarkable progress, it still faces many challenges such as data governance, technology integration and innovation, and standardization. In view of these challenges, this paper puts forward a series of countermeasures, and looks forward to the future development direction of intelligent water conservancy.

A historical overview of experimental hydrology in China

AbstractThe history of experimental hydrology in China is important but poorly documented. Here we review 94 papers (86 of these in Chinese) from the CNKI and Web of Science websites to chronicle the history of experimental studies in China before 2000. Professor Wei‐Zu Gu—the focus of this Special Issue—factors heavily into this history. Perhaps more than any country, the experimental hydrology history of China is influenced by socioeconomic development and political change. Our analysis shows 4 main periods of development associated with (1) an early development stage before 1949, the founding year of People's Republic of China (PRC), (2) an initial period of rapid transition in experimental studies in China (1949–1965), (3) a struggling and recovering stage for during and shortly after the Cultural Revolution, from 1965 to 1978, and (4) significant progress associated with new policies for reform and opening up in China from 1978 to 2000, that included contributions of Wei‐Zu Gu and other scientists. In terms of experimental hydrological findings, two notable contributions are a mathematical description of saturation overland flow derived from streamflow and precipitation data and calculated water storage deficit in the unsaturated zone by Zhao and Zhuang (1963), several years before its process‐based ‘discovery’ in the USA (and elsewhere) and the ‘interface runoff generation law’ of Yu (1985) which was ahead of its time in understanding linking the notion of the commonality of all runoff forms. In terms of model development stemming from experimental studies, the development of the Xinanjiang Model of Zhao (1980) was a significant achievement, later partly adopted into the VIC model in the USA and the ARNO model in Europe. Finally, the Hydrohill catchment developed by Wei‐Zu Gu led the way for the rapid rise in process studies and internationalization of experimental hydrology in China. Overall, the experimental hydrological studies from 1949 to 2000 had a strong engineering focus, with many links to water conservation construction and management.

Dynamic deformation characteristics and microscopic analysis of xanthan gum-treated silty soil during wetting process

The deformation characteristics of silty soils under vibrational loads can easily change due to the wetting process, leading to the failure of roadbed structures. Commonly used methods for improving silty soils in engineering often yield unsatisfactory economic and ecological outcomes. As an environment-friendly soil improvement material, Xanthan gum has broad application prospects and is therefore considered a solidifying agent for enhancing silty soil properties in the Yellow River Basin. In this study, a series of tests is conducted using a scanning electron microscope and a dynamic triaxial testing apparatus to investigate the microstructure and dynamic deformation characteristics of unsaturated silty soil with varying xanthan gum contents during the wetting process. The results show that xanthan gum effectively fills voids between soil particles and adheres to their surfaces, forming fibrous and network structures. This modification enhances the inherent properties of the silty soil and significantly improves its stability under dynamic loading. Specifically, with increasing xanthan gum content, the dynamic shear modulus increases while the damping ratio decreases. During the wetting process, as suction decreases, the dynamic shear modulus decreases while the damping ratio increases. Xanthan gum reduces the sensitivity of the dynamic deformation characteristics of the treated silty soil to changes in suction levels. Finally, based on the modified Hardin-Drnevich hyperbolic model, a predictive model for the dynamic shear modulus and damping ratio of treated silty soil is proposed, considering the xanthan gum content. These research findings provide a theoretical basis for the construction and maintenance of water conservancy, slope stabilization, and roadbed projects in the Yellow River Basin.

Research on Correlation Morphology of Traditional Settlements in Ingressive Region Under the Influence of Water Conservancy Construction: A Case Study of the Ningshao Plain

Research on Correlation Morphology of Traditional Settlements in Ingressive Region Under the Influence of Water Conservancy Construction: A Case Study of the Ningshao Plain

Research on the Forms and Value Connotations of Water Culture in Military Reclamation Print Art

This study explores the development trajectory of water conservancy construction in the military reclamation context and interprets the historical value and era image connotations of thematic prints focused on water conservancy construction from the perspective of print art. It reveals the arduous efforts and remarkable achievements of the military reclamation group in water conservancy construction since the founding of the People's Republic of China, highlighting its significant practical implications for the current cultural strategy of enriching Production and Construction Corps.

Construction Technology of Slope Excavation and Support for Hydraulic Engineering

With the development of the Chinese social economy, more and more attention is paid to water conservancy construction, water conservancy project construction is related to the national economy and people s livelihood, in Xinjiang water conservancy project construc- tion, because of the water conservancy project construction period, involving wide, poor conditions, large span, and other factors, so the water conservancy construction in the slope excavation and support construction is more difficult, How to effectively improve the quality of water conservancy engineering construction, do a good job in slope excavation and support construction work. Below we will combine a hydraulic engineering construction example, to analyze the application of slope excavation and support technology in hydraulic engineering construc- tion for you.

Analysis of Water Conservancy Engineering Construction Technology and Quality Control

At the present stage, the development of social economy and science and technology has promoted the prosperity of Chinese water conservancy construction undertakings, some of which water conservancy engineering construction projects have obtained a high level of in- ternational attention and attention. To continue to promote the rapid development of water conservancy construction in our country, it is neces- sary to optimize and perfect construction technology, and strengthen the implementation of quality control measures, to improve the integrity of water conservancy project construction quality. Therefore, this paper briefly analyzes the construction technology and construction quality control of water conservancy projects for reference.

Analysis of Seepage Prevention Technology for Water Conservancy and Hydropower Projects

In China's water conservancy and hydropower engineering implementation project at the present stage, anti-seepage technology has been widely used, grasping every link of the project, to ensure the project quality and smooth implementation, water conservancy and hydro- power engineering has a very important impact on every aspect of our country, so we should innovate and improve the water conservancy and hydropower engineering construction constantly. Due to the construction of water conservancy and hydropower engineering to our country s economic and social development has a great impact, so this requires that we pay great attention to the implementation process, more standardized engineering implementation of scientific and normative, improve the stability and durability of water conservancy and hydropower engineering, promote the long-term economic and social development.

Evaluation on the willingness of migrants and native farmers to transfer farmland in resettlement areas and their coupled coordination relationships: perspectives for environmental and social sustainability

The construction of water conservancy and hydropower projects often involves substantial land acquisition and resettlement. Land is a crucial means of production, playing a significant role in ensuring food security and protecting the ecological environment and social development. However, the advancement of urbanization and changes in production methods have led to a noticeable shift in the behavior of farmers on lands. Abandoned land and reclaimed wasteland in host resettlement areas lead to low land-use efficiency, environmental degradation, and frequent geological disasters. It is important to evaluate the willingness of migrants and native farmers to transfer farmland in the resettlement area and their coupled coordination relationships to realize effective land use. These were evaluated in this study by constructing an index system from personal and family characteristics, land resource endowment, characteristics of the external policy environment, and psycho–cognitive characteristics. The results showed that their coupling degree was 0.999, while their coupling degree of coordination was 0.68. The relative development degree was 1.01. It showed that a strong correlation existed between the willingness of migrants and native farmers, and they were in a basic coordination phase. They influenced each other and reached a basic balanced state. Farmland can be transferred between migrants and native farmers to improve their livelihood, resettle migrants, improve land-use efficiency, and reduce wasteland reclamation. This suggested the possibility of establishing a land transfer resettlement model based on the willingness of migrants and native farmers to achieve environmental and social sustainability in the resettlement area.

Research on Probability Estimation Method of Investment Cost of Water Conservancy Construction Project

The construction period of water conservancy construction project is long, and the project cost is affected by many uncertain factors. There is a great difference between the final account value after the completion of the project and the budget value before the commencement.Therefore, this paper considers the complexity and variability of the project cost, analyzes and constructs the probability estimation theory of investment cost from the perspective of system analysis, and applies it to the estimation of the investment cost of the construction project of Matan River miaotazi hydropower station, and calculates the probability distribution of the total cost change.The research results can provide a new idea for the estimation of investment cost of water conservancy projects, and also provide valuable reference for the estimation of investment cost of Matan River miaotazi hydropower station.

An Analysis of the Relationship between River Engineering and Water Conservancy Construction and State Capacity in the early and middle periods of the Qing Dynasty (A.D. 1644 - A.D. 1820)

The study in this paper focuses on the relationship between the financial situation related to river engineering and water conservancy and state capacity in the early and middle periods of the Qing Dynasty. There have been some controversies in the study of state capacity in the Qing Dynasty. Taking the governance of the Yongding River in the Kangxi Dynasty and the governance of the Jiangsu and Zhejiang Seawalls in the Yongzheng and Qianlong Dynasties as examples, this paper argues that in the river engineering and water conservancy construction in the early and middle periods of the Qing Dynasty, the expenditures were not only supported by the part of the total amount of regular fiscal income, but by the positive extra revenue other than regular fiscal income. This fact suggests that the state’s capacity in the early and middle periods of the Qing Dynasty was recognizable in handling practical affairs and might not be as weak as it appeared.

The important role of intelligent water conservancy in the construction of high-standard farmland

Farmlandis the basis of food production,and also the key and difficult point of agricultural development in China.At present, China’s farmland is generally characterized by small scale, scattered distribution, weak infrastructure, and low level of informatization. High-standard farmland construction is an important policy formulated at the national level to ensure food security and promote agricultural transformation and upgrading. It is based on farmland water conservancy and combines information technology and communication technology with high-standard farmland construction, realizing the whole process of information perception, transmission, and management from field to market. However, China’s farmland water conservancy has problems such as backward irrigation conditions and technology, imperfect supervision and management mechanism, and lack of information professionals. The contradiction between agricultural modernization and high-quality development and insufficient demand for farmland water conservancy has gradually become prominent. Therefore, it is necessary to strengthen the construction of smart water conservancy, and strengthen the use of Internet of Things, cloud computing, big data, artificial intelligence, and other technologies to achieve information sharing and data sharing of high-standard farmland construction, to realize the efficient, accurate, and scientific management of high-standard farmland, and to ensure China’s food security.

An integrated accounting system of the economic-social-ecological framework for assessing the value of intensive land use: A case study of the Taihu Lake governance project

Assessing the value of land resources is a prerequisite for resource management, as well as for resolving the conflict between supply and demand. In the realm of intensive land use (ILU), a standardized framework for accounting methods from a project perspective has yet to be established. Therefore, taking the Taihu Lake governance project (TLGP) (which includes the Xingou River project, Xinmeng River project and Zoumatang River project) as a case study, this paper firstly constructs an integrated value accounting system based on economic, social and ecological frameworks. Furthermore, with consideration of physical parameters, we incorporated the integrated land section price method, income reduction method, alternative market method, and equivalent factor method are all incorporated to assess the value of ILU at distinct stages within the research area. This approach serves to elucidate the evolving dynamics of ILU valuation. The results showed that: (1) There were significant differences in the values generated by the ILU in different projects. The integrated value of the TLGP brought about by ILU was 177,189,300 yuan, and the ILU of the Xinmeng River project was significantly higher than the Zoumatang River project and the Xingou River project. (2) The ILU at different stages basically displayed the law of diminishing marginal utility. Consistent with changes in the different stages of the TLGP, the value of ILU in Stage I of the Zoumatang River project and the Xingou River project was significantly higher than that in Stage II. Additionally, the accounting system proposed in this study has the advantages of reasonable index setting and simple process operability. This helps to realize the comparison of ILU values across projects and stages. The results of this study can provide a reference for the management and sustainable use of land resources during the construction of water conservancy and other projects.

Alteration Mechanism of Variscan Granite in a Project Area at the Northern Foot of the Tianshan Mountains, China

Long-term erosion of granite—a type of hard rock—by hydrothermal fluids and tectonic movement can lead to a fragmentation of the internal structure of the original rock, transfer/replacement of mineral elements, and alteration of the rock’s basic properties. Such changes can be problematic for the construction of water conservancy, hydropower, and road projects. This study adopted the altered Variscan granite in a water diversion project area at the northern foot of the Tianshan Mountains (China) as the research object, and explored the alteration mechanism using thin section identification, X-ray diffraction, major element analysis, and electron probe and oxygen isotope tests. Results showed that the lithology of the granite in the study area is mainly biotite granodiorite and biotite monzonitic granite. Reductions in both the K+ content in plagioclase and the K+ and Ti4+ contents in chlorite indicate that the alteration types within the study area are mainly clayization of feldspar minerals and chloritization of biotite. Biotite granodiorite and biotite monzonitic granite both have low δ18O values. The δ18O value of biotite granodiorite decreases with increase in the Loss on Ignition. The low-δ18O-value granodiorite due to an alteration by hydrothermal fluids transformed from glacier meltwater, groundwater, atmospheric precipitation, and magmatic water; whereas the monzonitic granite might be formed by the reinvasion of low-δ18O-value granodiorite formed in the early stage, which is remelted, assimilated, and rebalanced. The research findings provide a reference for similar research on altered granite at the northern foot of the Tianshan Mountains, and also lay a foundation for subsequent research on its physical/mechanical properties and engineering characteristics.

Exploring the Importance and Countermeasures of Construction Management of Water Conservancy Projects

This article aims to explore the importance of construction management in water conservancy projects and the strategies to address challenges. The second part emphasizes the significance of construction management in water conservancy projects, including improving project quality and safety, scheduling construction progress effectively, controlling costs and resource utilization, and ensuring environmental protection and sustainable development. The third part lists major challenges faced in water conservancy construction management, such as technical issues, land use and acquisition problems, financial and human resource management, as well as environmental protection and ecological balance. The fourth part presents strategies to address these challenges, including strengthening project management systems and standards, enhancing technological research and innovation, establishing sound regulatory mechanisms and legal frameworks, improving personnel training and management, and strengthening communication and collaboration with communities and stakeholders. In conclusion, the importance of construction management in water conservancy projects lies in ensuring project quality, safety, and progress. To address challenges, appropriate strategies should be implemented to continuously improve and innovate.

Retracted: Construction of Water Conservancy and Energy Engineering Structure Platform Based on Cloud Computing

Retracted: Construction of Water Conservancy and Energy Engineering Structure Platform Based on Cloud Computing

Effects of Extreme Precipitation on Runoff and Sediment Yield in the Middle Reaches of the Yellow River

Understanding the link between extreme precipitation and changes in runoff and sediment yield is of great significance for regional flood disaster response and soil and water conservation decision-making. This study investigated the spatial and temporal distribution of extreme precipitation (characterized by 10 extreme precipitation indices recommended by the Expert Team on Climate Change Detection and Indices) in the Toudaoguai–Longmen section of the middle Yellow River from 1960 to 2021 and quantified the effects of extreme precipitation on runoff and sediment yield based on the method of partial least squares regression (PLSR). The extreme precipitation index showed an obvious upward trend in the last 20 years, with the increases in the central and northern regions (upstream) being stronger than the increase in the southern region (downstream). However, the runoff and sediment yield decreased significantly due to the implementation of large-scale soil and water conservation measures on the Loess Plateau, with average rates of 94.7 million m3/a and 13.3 million t/a during 1960–2021, respectively. The change points of runoff and sediment yield change occurred in 1979. Compared with those in the period from 1960 to 1979, the reductions in runoff and sediment yield in the years 1980–2021 were 52.7% and 70.6%, respectively. Moreover, extreme precipitation contributed 35.3% and 6.2% to the reduction in runoff in the 1980–1999 and 2000–2021 periods, respectively, and contributed 84.3% and 40.0% to the reduction in sediment yield, respectively. It indicated that other factors (such as large-scale soil and water conservation construction) played main roles in the decrease in runoff and sediment yield in the study area in recent 20 years.

The optimization model of soil and water conservation ecological construction for power transmission and transformation projects in ecologically sensitive areas in Sichuan and Chongqing area in the new era is analyzed

In the construction and development of modern society, the overall characteristics of soil and water conservation ecological construction are not only reflected in the coordination of biological measures and engineering measures, but also in the sustainable development of economy and technology, which is the fundamental demand of the comprehensive treatment and optimization model of soil and water conservation for power transformation projects in ecologically sensitive areas of Sichuan and Chongqing in the new era. Therefore, after understanding the development requirements of ecological sensitive areas in Sichuan-Chongqing area, this paper mainly studies the optimization model of ecological construction of soil and water conservation according to the construction management content of power transmission and transformation projects, so as to provide technical support for urban construction and development in the new era.