Water conservancy project construction can be said to be an effective mode for people to make full use of water resources. Therefore, in order to give full play to the maximum benefit of water conservancy projects, the overall planning of water conservancy projects should be formulated as soon as possible to establish a reliable quality guarantee for the smooth development of water conservancy projects as a whole. Simply put, it is to put the overall control and planning of water conservancy construction projects on the corresponding construction projects in the overall planning, build a feasible setting-out management model on this basis, and then rely on accurate measurement to truly realize effective construction and construction management. Therefore, it is of great social and practical significance to study the construction lofting technology of water conservancy projects.
Construction lofting technology of water conservancy project
Main characteristics of water conservancy project construction
Water conservancy project is an important basic project related to the national economy and people's livelihood. Its main construction features include the following aspects: First, the basic functions and functions of water conservancy projects are to discharge water, store water and store water. Therefore, the construction of engineering infrastructure has some special requirements, such as strong radioactivity, good stability and good crack resistance. In the construction of water conservancy projects, it is necessary to follow the corresponding construction technical specifications and actively take effective construction measures to fully ensure the construction quality of water conservancy projects; Second, water conservancy projects have higher requirements for foundations. Because in practice, water conservancy projects are often faced with a complicated and changeable construction environment. If the foundation problems are not handled properly, it is very likely to cause various security risks and bring immeasurable economic losses. Thirdly, the construction of water conservancy projects is easily influenced by the environment and seasons, which requires a clear and detailed construction plan before construction and full consideration of various unfavorable factors; Fourthly, the construction of water conservancy projects is more suitable for dry season, which helps to avoid various unfavorable factors.
Significance of lofting technology in water conservancy project construction
The so-called water conservancy project construction setting-out technology specifically refers to identifying various elements in the actual construction site according to the design in the construction drawings of water conservancy projects, and then quickly finding the correct position according to the marks made in the construction process, thus ensuring that the construction is carried out in accordance with the construction drawings to a great extent, greatly improving the construction efficiency and greatly reducing the construction error rate. On-site setting-out of water conservancy construction projects should be strictly examined according to the specific needs of the business, and the results of the examination should be reported to the supervision engineer, and the construction operation can only be carried out after the approval and approval of the supervision engineer. The location of water conservancy structures should also be marked according to the specific planning, design and construction drawings, and then the relevant data can be accurately measured, and the measurement report can be sent to the owner for approval before construction. In the construction, it is also necessary to avoid the movement of the pile position, ensure that the pile position can be seen clearly, and protect the control points and control piles.
Setting-out steps and construction procedures in water conservancy project construction
It is precisely because water conservancy projects are easily influenced by many factors, such as construction seasonality, hydrometeorological conditions, etc., therefore, organizing construction to determine construction technology is a link that cannot be ignored in water conservancy projects. Optimized technological process, excellent construction organization and correct design technology can greatly reduce the project cost, shorten the construction period and improve the project quality. First of all, it is necessary to determine all the construction processes and construction sequences in the assembly line and calculate the engineering quantity of each construction process, because only by accurately calculating the engineering quantity of water conservancy projects can the operation time be accurately determined; Secondly, divide the construction sections in detail. The main purpose of dividing the construction section is to ensure that different professional teams work on different working faces at the same time, which is helpful to greatly improve production efficiency and production efficiency. In the process of dividing construction sections, on the one hand, we should ensure the quality of water conservancy projects, and the joints between construction sections should be placed on the natural boundaries of buildings, such as settlement joints and expansion joints. On the other hand, the number of construction sections should meet the requirements of assembly line organization, that is, not less than the number of processes in the assembly line; Third, organize the construction team reasonably. The construction team arranges corresponding construction sections according to the professional division of labor. Usually, each construction team member should ensure that all construction workers have the minimum working face needed to maximize their labor efficiency according to the actual working face conditions of the minimum construction section, and the number of construction team members should also meet the reasonable requirements of labor organizations, otherwise the labor efficiency will be reduced; Finally, determine the operation time of each section and organize the construction continuously. After the construction task is determined, each construction team can determine its construction plan and the number of construction personnel according to their own needs.
Application and management of setting-out technology in water conservancy project construction
The standard setting-out of water conservancy project construction should be strictly in accordance with the construction design drawings for construction management, while the construction setting-out is to provide eye-catching signs for on-site construction, that is, to mark landmark buildings. Only in this way, the construction personnel can carry out the construction work according to the laying specifications. In the construction process of standard setting-out of concrete in hydraulic engineering, according to the overall construction scheme, the sections that are not conducive to construction work should be effectively avoided to ensure the completion of construction tasks in a limited time, and the setting-out of channels should also avoid crossing with railways or highways as much as possible.
In the standardized setting-out of water conservancy project construction, if it is the setting-out of channel profile, it is necessary to effectively measure the relevant data of water conservancy project, do a good job of data recording in an all-round way, and determine the channel elevation, channel pile number, water level elevation and intersection coordinates; For the existing diversion gate or control gate, the corresponding elevations in front of the gate, behind the gate, at the top and bottom of the gate should be measured, and the number and width of the gate holes should be measured; It is necessary to measure the elevation of the top and bottom of the built bridge to determine the span and width of the bridge; For the completed bridge, it is necessary to accurately measure the elevation of bridge bottom and bridge top. The main purpose of water conservancy project construction survey is to achieve more suitable and standardized construction, and then adopt flexible measurement methods according to specific conditions in the concrete construction of water conservancy projects. In the concrete construction setting-out management of water conservancy projects, the elevation of the corresponding section should also be measured, and then the specific earthwork quantity within the scope of channel transverse construction should be determined according to the section data. The cross section shall be measured and determined according to the topographic conditions. Hills and flat terrain should be kept within 1.5m, highlands and mountains should be less than 2m, and topographic points should be controlled within 3m of adjacent basic elevation points.
The content of channel measurement in water conservancy projects mainly involves the measurement of channel and its corresponding building cross section, channel longitudinal section and plane position elevation. It is necessary not only to comprehensively collect the survey data of water conservancy projects, but also to strictly follow the construction survey specifications. According to the planning and requirements of water conservancy projects, effective and scientific construction management is carried out. In the construction of water conservancy projects, when measuring the longitudinal section of the channel, the ground elevation should be measured on the center line with a level, so as to realize the longitudinal design of the corresponding channel slope, bridge and sluice. In order to establish a more convenient channel length measurement model, it is necessary to mark the corresponding mileage along the center of the diversion building or the head of the channel centerline with small stakes, keep the spacing between small stakes at 100 m, 50 m and 25 m, and determine the cumulative number from top to bottom, so as to effectively determine and mark the construction project.
In a word, the importance of water conservancy project is self-evident, so we should attach great importance to it, control the setting-out stage of water conservancy project reasonably and scientifically, and strengthen the application of construction setting-out technology to ensure the improvement of water conservancy project quality.
For more information about project/service/procurement bidding, and to improve the winning rate, please click on the bottom of official website Customer Service for free consultation:/#/? source=bdzd