Coordination between electric power engineering installation and civil construction?

What is the cooperation between power engineering installation and civil construction? The following Zhong Da Consulting will introduce relevant contents for your reference.

With the continuous development and renewal of modern design and construction technology in China, and with the popularization and application of many new structures and technologies, coordination in engineering construction has become more and more important. We should rationally optimize the coordination between modern civil engineering and power equipment to reduce problems and improve social and economic benefits. 1 Influence of problems in power installation In power engineering, installation is the most complicated and difficult link, including civil engineering, water supply and drainage, electrical installation and other projects. In the process of construction, if a certain type of work only considers its own work, it will inevitably affect the construction of the whole type of work, and it is difficult to do a good job in this major or type of work. Even at a certain stage, a certain type of work is not affected by other types of work and completes the task, but it will bring huge losses to the whole project construction, not only limited to the construction period, but also sometimes economic or quality losses. Therefore, coordination in construction plays a very important role. As an integral part of the whole electric power project, electric power installation project is bound to have many connections with other construction projects, especially with civil engineering construction. 2 Preparation before construction of electric power engineering installation project In the design stage of the project, the electric power designer put forward the technical requirements of civil engineering design, such as the embedded section steel of switch cabinet foundation; The fixed parts of electrical equipment and lines should be embedded, and these requirements should be reflected in the construction drawings of civil structures. Before the civil construction, the power installation technicians should review the civil and electrical construction drawings together with the civil construction technicians to prevent omissions and errors. Electric power technicians should learn to understand the civil construction drawings, understand the civil construction schedule and construction methods, especially the practices and connection methods of beams, columns, floors and roofs, and carefully check whether the proposed electrical installation methods can adapt to the civil construction of this project. Before construction, the embedded parts, embedded pipes and spare parts in the civil construction stage must also be processed and prepared. 3. Installation of main structure and masonry construction stage of electric power engineering 3. 1 In the construction stage of main structure, according to the progress requirements of civil cast concrete and the sequence of flow operation, the pre-embedding and reservation work is done step by step, which is the key process of the whole electric power installation project. At this stage, the embedment of power installation project is generally completed in three stages: ① the completion stage of civil structure formwork; (2) the completion stage of sinking beam and laying bottom reinforcement; ③ gluten completion and pre-mold sealing stage. The first stage is mainly to complete the pay-off project, including the location and size of reserved holes in water supply and drainage pipelines, and reserve wooden boxes for each hole according to the pay-off size; Pay-off of lighting box, switch panel socket and distribution box; Reserve the position of air conditioning drainage pipes, embedded components of large equipment such as elevators, and pay-off with the same size and position. The second stage mainly completes the laying of pipelines and the placement and reinforcement of embedded parts, that is, the laying of water supply and drainage embedded pipes and the embedding of casing pipes of lintel drainage pipes according to the setting-out in the first step; Pre-embedded casing of air conditioning drainage pipe; Embedding of lighting, switch, socket conduit and weak current conduit; Welding of lightning protection grounding network; Processing and fixing of embedded parts of large equipment. The third stage is mainly to check the construction quality and technology of the first two stages, and to make up for the missing ones, and to complete the handover procedures with the civil works. Then, after the reinforcement meets the requirements in civil engineering, concrete is poured. In the process of pouring concrete, electromechanical installers must always follow up to ensure the perfection of embedded engineering. And keep in touch with the civil construction personnel at any time, so that when the civil construction is in place, it can be reserved in time to ensure the smooth progress of the reserved work. 3.2 After the completion of the main structure construction of masonry engineering, when the hardness and strength of concrete meet the requirements, the formwork for masonry construction will be dismantled and set out. Mechanical and electrical installation construction personnel must master the masonry progress of civil engineering, so as to cooperate closely with civil engineering and do well the construction of wall pipes and other projects. Mechanical and electrical installation works are generally completed in three stages: ① civil cleaning and setting-out after formwork removal; ② Masonry construction stage; (3) Pre-construction stage of masonry mortar. In the first stage, the electric power installer checks whether the position and size of the reserved hole are correct, so as to avoid rebuilding and repairing the pipe hole after the completion of masonry; Check whether the reserved line pipes and water pipes are unobstructed, and at the same time take protective measures for semi-finished products to prevent mortar and garbage from entering the pipes during masonry construction. In the second stage, the mechanical and electrical installation construction personnel should cooperate with civil engineering to reserve various holes, such as reserved holes for distribution boxes and air conditioning drainage pipes. In the third stage, the mechanical and electrical installers laid water pipes, conduits, indoor distribution boxes and switch panel boxes on the wall according to the requirements of the drawings. In the construction of the main masonry project, the power installation builder should do a good job of handover with the civil builder in each small stage. In the first stage, the correctness of the embedded holes and pipelines in the embedded stage of the structure can only be checked according to the masonry position after the garbage is cleaned up and the masonry position line is put away. In the second stage, we must master the detailed masonry progress of civil engineering, so as to track it in place and leave no loopholes. The third stage is the most necessary stage in masonry engineering. At this stage, if the civil engineering can't give a complete horizontal line and make a gray cake, the power installation project can't make any project according to the drawing size. There is no correct horizontal line, which directly leads to the height of switch and socket panel can not be constructed according to the drawings, and it will also lead to unevenness after installation. Failure to make ash cake will directly lead to the failure to keep the switch and socket panel in the same plane with the wall after construction, which will greatly reduce the quality of the project and the overall level of the project. Due to the uneven quality of construction personnel, any project inevitably has quality problems in the construction process. Of course, there are many reasons for the problems, but quality accidents caused by improper cooperation are not uncommon. Therefore, the coordination and cooperation among various professional jobs in building engineering can not be ignored, and with the development of modern design and construction technology and the popularization and application of many new structures and technologies, the coordination and cooperation in construction becomes more and more important. 4. The civil construction technicians shall, together with the electrical installation technicians, provide technical guidance and supervision for the grounding grid construction of the whole substation in the power engineering construction stage and equipment installation stage (1). In terms of construction technology and materials, it is necessary to control the quality and ensure that the grounding resistance is qualified. In addition, civil construction technicians should cooperate with electrical installation technicians to connect outdoor electrical equipment, incoming wires and bus frames with grounding grids, as well as electrical equipment in the main control building and distribution room with grounding grids. (2) The civil construction technicians should mark the grounding piles on the four sides of the grounding grid, so that when the electrical testers find that the grounding resistance of the grounding grid is unqualified, it is convenient for the electrical installation technicians to take extended grounding grid or other technical measures to solve the problem. In addition, for this kind of concealed works, the project supervisor should be invited to the site actively during the construction process, and the burying work can only be carried out after the completion of the whole grounding grid construction. For example, in the technical renovation project of Taiping Substation and Mengjiang Substation in tengxian, Guangxi, civil construction workers buried the grounding grid by themselves without the supervision of the project, which was eventually questioned by the supervision of the project, leading to the delay of the project. On the contrary, when the grounding resistance of the grounding grid of Ru Yan Substation in Wuzhou City, Guangxi Province was unqualified due to soil problems, the civil construction unit knew the identification of grounding piles like the back of its hand, which created favorable conditions for technical measures to be taken later. (3) In the early stage of foundation construction, civil construction technicians shall, jointly with electrical installation technicians, do a good job in locating outdoor pole pits and master the technical data of each pole pit. According to the different lengths of cement poles on site, the electrical installation technicians reasonably arrange the pole position of each pole, and require the civil construction technicians to carry out rectification when necessary, so as to reduce the workload of both parties and avoid affecting the project progress. (4) Strengthen the foundation construction of other outdoor electrical equipment (such as circuit breakers and capacitors). ), and embedded cable protection tube and iron parts, convenient for continuous lifting when lifting equipment in the future, as far as possible to reduce the working days of renting large mechanical equipment. At the same time, it is necessary to avoid the problems of re-excavation and foundation laying caused by inadequate cable protection pipes and embedded iron pieces during equipment installation. In civil construction, actively cooperate with the needs of electrical installation technicians, do a good job of road leveling, ensure that large-scale construction equipment (such as cranes, trucks, etc.) can smoothly enter each operating point of the construction site, and provide guarantee for the hoisting of vertical poles and outdoor equipment. At the same time, the smooth road also reduces the occurrence of secondary transportation of equipment and installation materials as much as possible, and reduces the expenditure of engineering installation costs. In the early stage of electrical installation, civil construction and electrical installation cross each other, and both parties should actively coordinate with each other to understand each other's construction progress. (5) At the same time of grounding grid construction, speed up the construction of the main control room and each distribution room, and according to the requirements of electrical installation technicians, do a good job in the construction of indoor electrical equipment foundation and cable pit, do a good job in auxiliary work such as reserving cable holes and burying cable fixing hardware, and set up the passage for electrical equipment to enter the distribution room in advance. This will help electrical installation technicians to arrange their work reasonably according to the actual situation of the weather. When it rains or the weather is hot, they can continue to work indoors. In addition, when electrical installation technicians install and debug outdoor primary equipment, the construction of outdoor cable pit, cable interlayer and cable shaft in the main control room should be carried out in time during civil construction, and the construction of cable pit should be carried out under the guidance of electrical installation technicians, so as to ensure that the drainage slope of cable pit, the production of cable bracket and grounding resistance meet the relevant electrical installation specifications, and check whether the elevation, position, size and material quantity of bracket are consistent with the drawings, so as to prepare for the next installation of secondary equipment. In the case of sufficient personnel, the number of working points can be increased to ensure that the construction progress can be carried out as planned.

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