An introduction to the water conservancy hub project dam safety monitoring method research?

With the development of urbanization in various regions, the water conservancy hub project has increasingly become a key facility to ensure the water use in towns, watering of farmland around towns, and flood control and flood prevention. In order to ensure the safety and stability of the dam and reduce the chances of safety accidents, dam managers should carry out regular safety monitoring work, strive for early detection of problems and early solution of problems, be responsible for the life and property safety of the residents around the water conservancy hub project, and provide the conditions for the effective extension of the service life of the dam. In fully understand the importance of safety monitoring to maintain the safety and stability of the reservoir, how to implement the content of safety supervision has become the relevant management personnel have to face another serious challenge, only to effectively improve the supervision efficiency, ensure the quality of supervision in order to effectively prolong the service life of the dam, so that it for the development of towns and cities to make their due contribution.　1 Xingtai City, Hebei Province, Zhuzhuang Reservoir Overview Xingtai City, Hebei Province, Zhuzhuang Water Conservancy Hub Project is located in the upper reaches of the South River on the main stream of the Shahe River, is a to ensure that the downstream towns and cities, rural residents of the important facilities for water and electricity projects, mainly with power generation, flood control, drought control and many other integrated functions, was built in 1971, took 14 years to complete, control of the Shahe River basin area of more than 1,200 square kilometers, the overall capacity of With an overall volume of 400 million cubic meters, it is the prerequisite and foundation for Xingtai people to maintain a normal life.　Zhuzhuang Water Conservancy Hub Project mainly consists of water discharge hole, flood relief hole, two high and low power stations, dissipation pool, overflow dam and other basic parts of the composition of the dam body is up to 95 meters high, the total length of about 544 meters, the length of the overflow dam accounted for one-fifth of the length of the total dam, the top of the dam elevation of 261.68 meters, the lower part of the dam body is opened with six curved steel gates, the specifications are the same, the length of 14 meters, the length of the dam is about 1,000 square meters, and the length of the dam is about 2,000 square meters. The specifications are the same, the length is 14 meters, the width is 12.5 meters, the peak flood discharge can even reach ? Four thousand four hundred million meters per hour.　Zhuzhuang Water Conservancy Hub project from the official put into use so far, has been nearly forty years of years, in this long period of time, the reservoir staff at all levels are actively doing their own work, maintenance of a single λ within the development of the rules and regulations, subordinate to the higher management, leadership to listen to the lower level of workers, to create a harmonious, cordial, orderly working atmosphere Χ, so that the reservoir in the efforts of the entire workforce The reservoir, with the efforts of all the workers, has achieved good results in flood control, aquaculture, farmland watering, urban water supply and other aspects, creating conditions for the prosperity of the national economy, social stability, and the well-being of the people of Xingtai City.　2 Engineering Inspection and Safety Monitoring of Zhuzhuang Reservoir in Xingtai City, Hebei Province 2.1 Engineering Inspection of Zhuzhuang Reservoir 2.1.1 Types of Engineering Inspection The engineering inspection of Zhuzhuang Reservoir can be roughly categorized into three types: regular inspection, daily inspection and special inspection. Regular inspections are scheduled before and after the flood season of the Sha River. Before and after the flood season of Shahe River in 2009, the personnel involved in the inspection include professional monitoring technicians, leaders of relevant departments, etc. The main inspection items are the operation of steel gates, the sensitivity of sluice gate opening and closing equipment, the stability of power supply, and whether the communication equipment is working properly, etc., so as to maximize the normal operation of the reservoir to satisfy the necessary water and electricity needs of the downstream residents. In the daily inspection, the relevant technical personnel should be detailed testing of various types of electrical equipment operating status, to see if there are any safety hazards in the hydraulic building, to minimize the chance of possible accidents. When the reservoir encounters emergency special circumstances, it should immediately start the emergency plan, strengthen the management of special inspection, according to the degree of seriousness of the risk of deploying technical personnel to repair it, properly deal with the dangerous situation, minimize the loss, and eliminate the worries. In the event of strong natural disasters, such as earthquakes, heavy rains, typhoons, etc., the water λ in the reservoir may rise rapidly in a short period of time, once the water λ rises to the maximum water λ above the line, should cause the management personnel to be vigilant, shorten the inspection and patrol gaps, and increase the number of patrols, in order to find problems in a timely manner, timely problem solving, and maximize the dam to ensure the safety and stability, and the downstream safety of the people's lives and property! and to escort the safety of the Xingtai section of the Beijing-Kowloon Railway-, Shiwu high-speed railroad and other economic arteries.

2.1.2 Engineering inspection notes? Managers and technicians in ? After the completion of the inspection task, the inspection results must be as soon as possible, complete, objective, comprehensive, detailed and true record? In the document, and computer backup, easy to access and browse, for the subsequent water conservancy hub project repair and maintenance work to provide the necessary reference basis. If the technicians on the way of inspection found a safety? Hole or emergencies, according to need, with the help of drawing, photography, video and other ways to save the original information, and the first time to start the emergency plan, reported to the higher authorities, the higher deployment of professional groups to properly solve the safety problem, there must not be any fluke or negligence, trying to muddle through, and ultimately lead to irreversible consequences and incalculable losses.

2.2 Zhuzhuang Reservoir safety monitoring Normally, the safety monitoring of water conservancy hub projects involves vertical λ shift observation, horizontal λ shift observation, seepage? observation, dam body temperature observation, stress observation, expansion joint observation and many other contents. Zhuzhuang Reservoir has accumulated a large amount of valuable data during nearly forty years of safety observation, and it can be clearly seen through comparison and analysis that Zhuzhuang Reservoir does not have a large deformation situation. There is a large deformation, deformation Χ has been in the adjustable Χ within the paradigm, the technicians have basically figured out its deformation law, and based on the monitoring reform, adjusted some of the test items and monitoring frequency, so that it is more catering to the needs of the technicians of the inspections. From 1989 to the present, the researchers through the establishment of Zhuzhuang reservoir deformation of mathematical model, gradually recognize its general deformation law, such as temperature changes affect the dam vertical λ shift situation, the water λ high and low impact on the length of the dam horizontal λ shift, etc., for the subsequent control of the finishing work has laid a solid foundation.　3 Safety Maintenance and Repair Methods of Zhuzhuang Reservoir in Xingtai City, Hebei Province 3.1 Main Safety Maintenance Projects of Zhuzhuang Reservoir The safety maintenance projects of Zhuzhuang Reservoir can be roughly divided into two categories, one of which is the age-old repair project, and the other is the emergency flooding project, which is financed by the governmental departments and the Department of Water Resources, Water Affairs Bureau, and is provided jointly, and partly used for the updating of the equipments and the salary expenses of the employees, and partly used for the repairs and maintenance of each project. In Zhuzhuang Reservoir, the projects that require regular maintenance include upgrading the mechanized control system of the steel gates, replacing some parts of the gate pier of the overflow dam and overhauling the overall performance, dredging of the pressure pipe, replacing the corroded metal parts, and increasing the strength of the metal parts to prevent moisture and corrosion. 3.2 Zhuzhuang Reservoir Safety Monitoring Maintenance Type 3.2.1 Regular Maintenance Maintenance Regular maintenance requires the relevant technical personnel to the failure of the area has been daily inspection and maintenance, always pay attention to its changes, as far as possible to properly solve the problem, accelerate the speed of local maintenance to ensure that the quality of the maintenance, the safety hazards will be nipped in the bud.3.2.2 End of the year engineering maintenance maintenance Technical maintenance personnel At the end of the regular inspection, for the problems that have been found to draw up a plan outline, according to the degree of danger in order of priority, will be the first to solve the thorny and urgent problems, will be able to delay the solution to the problem of delayed solution, by the competent authorities to verify the formal solution, to ensure the maximum degree of safety and stability of the dam to enhance the safety coefficient.3.2.3 Engineering emergency repair maintenance once the Water conservancy hub project appeared more serious safety problems, and engineering repair is difficult, time-consuming, involves the complexity of the technical process, the dam management department should be the first time to notify the design single λ λ and the construction single λ λ, will be the two sides of the professionals together, on the restoration of the project to start the discussion and to reach a *** knowledge, to draw up a practicable solution, by the higher authorities to review and approve the immediate after the In summary, the water conservancy hub project safety monitoring work is a long and arduous work, the need for employees at all levels to do their jobs, set up a strong sense of responsibility, fully aware of the importance and necessity of safety monitoring of dam safety and stability, strengthen the inspection efforts, always pay attention to the operation of the dam, as early as possible to find hidden problems, as early as possible to eradicate hidden problems, to ensure that the maximum extent of water conservancy hubs, to ensure the safety of the dam, to ensure the maximum extent of water conservancy hubs. Maximum ensure the safe operation of the water conservancy hub project, to maintain the normal operation of production and life to lay a solid foundation.

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