The Application of 3D Visualization Technology in the Construction of Water Conservancy and Hydropower

This paper put forward the structure and construction process of three-dimensional visualization of hydroelectric construction system model based on GIS and 3D visualization platform. The paper first describes the 3D visualization based on GIS, then discusses the method of constructing 3D visual digital model, and then introduces the terrain digital technology, feature modeling technology. Finally, the technical route shows that this method has good practicability.

Influence of Urban Development and Construction on Ecological Water Conservancy Landscapes and Countermeasure Analysis——A Case Study of Ecological Water Conservancy Landscapes in Nanchang City,Jiangxi Province of China

Through analyzing influence of urban development and construction on ecological water conservancy landscapes,common ecological problems of existing water conservancy landscapes were explored.Causes responsible for these problems were summarized as poor knowledge about ecology,unclear objective of construction,water conservancy projects violating the principle of conserving and restoring ecological conditions,and degraded biodiversity of water environment.It was stressed that ecological construction of water conservancy landscapes should break traditional water conservancy concepts,adopt ecological treatment and build ecological landscapes;geomorphic,hydrological and hydraulic of original river systems should be maintained as much as possible;sewage not discharged to natural water directly;water circulation enhanced to promote self-purification capacity of water;necessary purification measures adopted for rivers and lakes.On the basis of above strategies,construction of ecological water conservancy landscapes in Nanchang City was taken for example to analyze problems in the previous construction and present achievements,then principles to be followed in the future construction and protection of ecological water conservancy landscapes in Nanchang City were proposed.

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

Assessment of Man-made and Natural Hazards in the Surroundings of Hydropower Projects under Construction in the Beas Valley of Northwestern Himalaya

Mountain ecosystem, on the earth, has plenty of natural resources. In Himachal Pradesh all the rivers are snowfed and therefore rich in water resources. These resources have been supporting enough for the generation of electricity through introducing hydropower projects since the last decade However, every developmental activity has its own negative impacts on the surrounding environment. Due to the fragile nature of topography and delicacy of ecology of the Himalaya, it results in lot of disturbances because of high degree of human interferences like construction of major hydropower projects. The increased extent of geological hazards, such as landslides, rock fall and soil erosion, have mainly due to alike developmental interventions in the natural ecosystem. So understanding and analysing such impacts of the hydropower projects have mainly been on the environment in various forms but natural hazards have been frequent ones. The present study, therefore, focuses mainly on the Parbati Stage II （800 MW） and the Parbati Stage III （520 MW） hydropower projects; both of which fall within the Kullu district of Himachal Pradesh. Based on the perception survey of the local communities, the existing land use pattern, status of total acquired land of the residents by hydropower projects, frequent natural hazards and resultant loss to the local communities due to upcoming construction of hydropower projects surrounding to the Parbati Stage II and III have been analysed in the paper. Also, the preventive measures to mitigate these adverse impacts have been suggested to strengthen these projects in eco-friendly manner in the mountain context.

Research on Delay Risks of EPC Hydropower Construction Projects in Vietnam

In recent years, in Vietnam, economy has been developing rapidly. To ensure rapid and sustainable economic growth, strong support from the energy sector is required. Governments in Vietnam have invested in numerous hydropower projects, many of which employ the EPC (Engineering, Procurement and Construction) contract. However, the EPC general contractors are facing many difficulties, resulting in schedule delays and considerable losses. This research is conducted to highlight the main risk factors in the delays of hydropower construction projects in Vietnam. The research employs the method of statistical calculations and risk analysis to obtain feedback from experts participating in similar projects. The research outcomes are as follows: identifying the risks that can cause delays in EPC hydroelectric construction projects in Vietnam;calculating and classifying the degree of impact of each risk to the progress of the construction. The practical significance of this study is to ensure the timely completion of projects, benefits for the investors, and the EPC general contractors.

China's Hydropower Construction and Science Technology Progress in the Five Decades

The achievements of China’s hydropower construction in five decades are shown in the following statistical data. The concise analyses have been made in the aspects of technical economy, geologic exploration, dam construction technique, underground engineering, flood discharging and energy dissipation etc, which represent the achievements and experiences in hydropower technologies.

Research On Construction Traffic Safety Measures Based On FAHP Model In Hydropower Project

With the rapid expansion of hydropower projects, Construction safety problem has become one of the bottlenecks for the development of hydropower industry. Combined with the construction of the diversion channel project of Guan Yinyan hydropower station, from the point of view of construction traffic safety, based on the result of the FAHP model, factors which influence the construction safety of the diversion channel project of Guan Yinyan hydropower station have been found, relative measures focuses on the approach to eliminate hazards and guarantee construction safety have been elaborated.

Construction of Tianshengquao Second Cascade Hydropower Station

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Analysis on the Problems of Solutions of Water Conservancy & Hydropower Engineering Cost Management

With the continuous development of society and economy in China, the number of water conserv ancy & hydropower engineering in China increases unceasingly and China s water conserv ancy industry also enters into the stage of rapid development. The construction of water conserv ancy & hydropower engineering promotes social and economic development, so in order to safeguard the benefits of the engineering, cost management shall be done well, which is also an important channel for companies engaging in water conservancy & hydropower engineering to obtain economic benefits. Based on this the paper firstly investigates the problems in water conserv ancy & hydropower engineering cost management and then brings up relevant solutions.

Analysis of Construction Technology for River Regulation and Bank Protection in Water Conservancy Projects

There are many problems and deficiencies in traditional bank protection methods,which cause certain damage to the ecological environment of river channels.Recently,the issues of river management,improving bank protection technology,formulating reasonable construction measures,and ensuring the smooth and efficient implementation of construction have been receiving increasing attention.

Substantive Characteristics of Water and Soil Conservation and Ecological Civilization Construction in China

Water and soil conservation is an important part of eco-civilization con-struction. It is a major part of eco-construction and lifeline of social and economy development. Therefore, water and soil conservation is of great significance in maintaining eco-safety. The research concluded status quo and characters of water and soil losses in China and analyzed water and soil conservation and construction of eco-civilization from the perspectives of water and soil conservation and con-struction of eco-civilization.

Analysis on Countermeasures of Water and Soil Conservation and Eco-environment Construction in China

With economy development,human destruction of eco-environment is deteriorating,which has become a key treatment nationwide.What＇s more,eco-environment construction is proceeding and multi-eco-environment projects are developing.Water and soil conservation and eco-environment construction should be a strategic task long-term insisted on,which is a part of agricultural construction.The research analyzed the relationship between water and soil conservation with eco-environment,concluded the process of ecological civilization construction in promoting water and soil conservation,and proposed countermeasures,laying foundation for water and soil conservation and ecological construction.

A Study on the Relationships of Ecological Civilization Construction with Natural Conservation and Sustainable Resources Use

Ecological Civilization Construction and natural conservatiorl and sustain- able resources use are three aspects of same object proposed from various angles of theory and practice. The paper intends to simply deal with some problems of this aspect and to propose corresponding suggestions for related departments.

Professional Cognitive Education Model for Agricultural Water Conservancy Engineering under the Background of New Agricultural Science

The construction of new agricultural science requires the use of modern scientific and technological means to transform and enhance current agricultural related majors.The agricultural water conservancy engineering major,with its inherent disciplinary advantages,plays an indispensable and important role in the construction of new agricultural science.In recent years,the lack of professional cognitive education has gradually become a significant problem in the training of talents in agricultural water conservancy engineering.Therefore,this paper deeply analyzes the problems and reasons faced by professional cognitive education,and proposes specific educational strategies for several key aspects such as enrollment promotion,freshman enrollment education,construction of teacher team,combination of scientific research and teaching,and strengthening professional cognition through competition activities.It aims to provide reference for improving the quality of professional cognitive education and exploring effective ways.

Nature reserve construction and its contribution to the biodiversity conservation in China mainland

By the end of 1993, 763 nature reserves were established in China with a total area of 66184.1 kha, occupied proximally 6. 84% of the whole country's land area.The reserves concerning biodiversity conservation include ecosystem categories of forest, grassland, desert, terrestrial wetland and waters, ocean and coast and categories of wild animal and wild plant. Based on the construction of the reserves, the contributions of the reserves of various categories to the biodiversity conservation and the existed shortages for the reserve construction in China were analyzed thoroughly in this paper.

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.