In order to further enhance the strong smart grid construction capacity, SGCC focused on the whole process of transmission line construction, co-ordinated and promoted the implementation of mechanized construction mode in the whole process in order to meet the needs of first-class power grid construction and support the construction of key projects such as UHV to enhance the power grid construction capacity, Improve construction efficiency and safety and quality level.
Innovative concept of people-oriented science building
In recent years, along with the rapid economic and social development in our country, the human resource cost of power grid construction has also increased substantially. At the same time, due to the trend of economic restructuring and population aging, the shortage of front-line construction workers in line engineering has become increasingly prominent.
Line construction requires a series of innovations. The first and foremost is the innovative idea. People, science, co-ordination, profoundness and flexibility are required to change concepts and methods, promote mechanized construction of the entire line, reduce manual input and operational risk, and further enhance the quality of construction , Efficiency, enhance economic, environmental and social benefits. "In recent years, sending and transforming construction units are engaged in the construction tasks of the largest scale, the highest voltage level and the most difficult problems in the world with almost the most primitive and traditional methods currently available in the world." Deputy Chief Engineer, Beijing Substation and Transmission Corporation Lang Futang said, "The more representative is digging foundation, because it belongs to the original form of soil foundation, the line has been a large area project, the basic pit is still mainly used for manual excavation, not only labor-intensive, low efficiency, and The risk of landslides dropping is high and the dust at the bottom of the landslide is huge. Therefore, it is urgent to realize mechanized construction. "
The whole process of mechanized construction concept, that is, with a new perspective, a new method, a new mode of thinking, guide the line construction of various mechanized construction process of the new model to achieve. Planning and design can not stick to the traditional way of thinking, the need for mechanized construction to create more and better conditions. The construction itself also needs constant technical and equipment adaptation to mechanized operation requirements. Management should organize the whole process of mechanized construction methods, including mechanical configuration, approach roads, civil coordination, etc., through advanced planning, water-flow construction operations, efficient completion of construction.
Innovative design to form a series of achievements
Transmission line design is an important part of the transmission line engineering construction life cycle, including the process of route selection, surveying, basic design, tower design, overhead wiring, grounding design, etc. It has the guiding function on the process, mechanical equipment and so on used in the construction .
In the design stage, it is necessary to fully consider the topography, geological conditions, configuration of construction machinery series, optimize the tower structure, node connection, single piece weight, basic type and so on according to the requirements of mechanized construction in the whole process. "Engineering design has a guiding role and is an important link in the entire life cycle of transmission line construction. It includes the key links such as route selection, tower design, basic design, grounding design and surveying and determines the construction technology and the configuration of machinery and equipment during the project implementation phase. Zhaoqing Bin, deputy chief engineer of Sichuan Power Design Consulting Co., Ltd. said. Through a series of researches, the main contents of the mechanized construction design covering the entire process of design of the lines have been formed, and the basic design principles for mechanized construction are innovated as well as the basic design techniques of digging foundation, hole pile foundation and bored pile foundation , Completed "the whole process of mechanized construction technology (design, equipment)", in order to achieve the design and construction of organic and effective link provides a guarantee.
In practice, in 2014, State Grid Tianjin Power Company relied on the Nanchong 500 kV line project, seized the key points, deepened and perfected the design proposal, carried out special studies and selected and demonstrated through many schemes. The foundation of bored pile was effectively avoided Foundation digging foundation deformation, foundation displacement and settlement and other issues arising in the construction process, large integrated cost savings of 10% to 25% of the foundation. State Grid Tianjin Power also organizes design units to conduct geological exploration on a site-by-site basis, clarify the geological conditions, avoid the application of machinery and technology in construction, and result in the waste of human and financial resources. It also supports the application of special rotary drilling rigs and only reduces the amount of mud by 80 % ~ 90%, significant environmental benefits.
The reporter also learned that, in order to meet the requirements of standardized construction, State Grid Infrastructure Department proposed to change the traditional design concept and thinking style in engineering design, and actively carry out the whole process in various links such as route selection, survey, conducting ground, tower, foundation and grounding design The concept and principle of mechanized construction should be based on the performance of mechanized construction equipment, optimization and determination of basic types and parameter values, etc., to form a well-behaved performance, to meet the mechanization of the construction of the design and other series, while continuing integration of new achievements in construction equipment technology, innovation Design methods, to further optimize the design content, to facilitate the construction of mechanized conditions. At the same time, in line with the requirements of mechanized construction, innovate the design concept suitable for mechanized construction in the whole process, deepen the technical requirements for surveying and mapping, and strengthen the unified coordination of design and construction technologies to achieve effective and organic convergence of design and construction.
Innovative equipment to build a standardized system
The whole process of mechanized construction, changing the line construction in the past to manpower-based, supplemented by machinery, to achieve the transformation of line construction to mechanized way, help to improve power grid safety and quality, efficiency and efficiency, is a first-class power grid construction The inevitable requirement of technological development. The advanced technology, customized specialization, standard modular transmission construction equipment, is the mechanized construction of the entire process of effective support. In recent years, according to the requirements of "advancement, specialization, standardization and serialization", the company innovatively develops miniature, specialized, energy-saving and environment-friendly and functionally integrated construction equipment according to the construction features and actual needs of transmission lines.
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