共查询到20条相似文献，搜索用时 0 毫秒
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I. A. Parabuchev V. V. Kayakin A. V. Mulina 《Power Technology and Engineering (formerly Hydrotechnical Construction)》2000,34(4):193-196
Conclusions It has become obvious in recent years that the primary purpose of engineering surveys is to ensure the reliability and safety
of water-power projects. 76% of emergency situations at the world’s hydroelectric plants are associated with the development
of natural and techno-natural processes. This superposes additional requirements on surveys.
Localization of the development of dangerous processes in space, and the designation of safety criteria for these processes
are some of the tasks required by engineering surveys. This makes it possible to solve the most important problem involving
control of natural and techno-natural processes to maintain the entity in a stable safe condition and prevent development
of extreme situations in a timely fashion.
Surveys and investigations to ensure the safety of water-development works would be performed systematically, but without
unhealthy agiotage surrounding unsubstantiated data.
Translated from Gidrotekhnicheskoe Stroitel’stvo, No. 4, pp. 47–49, April, 2000. 相似文献
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O. N. Nosova É. K. Aleksandrovskaya 《Power Technology and Engineering (formerly Hydrotechnical Construction)》1999,33(1):22-27
Conclusions
Translated from Gidrotekhnicheskoe Stroitel'stvo, No. 1, pp. 21–26, January, 1999. 相似文献
| 1. | The monitoring of the condition of water-development works, which is carried out using field observations and investigations will make it possible not only to evaluate the condition of the structures in various stages of construction and service, but also to verify the correctness of the design solutions adopted with respect to the layout of the structures, their construction, and the building technology employed. As practice has demonstrated, design solutions do not always correspond to requirements set forth for the operational reliability of the structures. |
| 2. | Results of multiyear field observations and investigations have contributed to improvement of design methods and found reflection in corresponding regulatory-methodical literature. At the same time, there has, up to now, not even been a sufficiently developed procedure with which to determine criteria of the reliable and safe operation of structures. The establishment of these criteria and determination of limiting allowable values of the parameters being monitored should be carried out with allowance for both standard computational requirements, and results of multiyear field observations on the structure. |
| 3. | Results of revision to operational-monitoring systems, which can be conducted during scheduled inspections of water-development works, suggest that in the majority of cases, the effectiveness of these systems is inadequate. Unsatisfactory representativeness of field data and a lack of indicators of the condition of the entity being monitored, which are substantiated by proper means—monitoring criteria—are usually basic causes of inadequate effectiveness of operational-monitoring systems. |
| 4. | Inadequate representativeness of field data can be explained by both errors in the design of the monitoring system at a given entity, and defects in its implementation, and also by exposure of new monitoring problems during operation, which could not be predicted in the stage of design formulation. That situation where in many cases, the design of monitoring systems is oriented toward the need to confirm only the results of calculations performed under field conditions, and not the models adopted for these calculations also frequently contributes to a reduction in the representativeness of the field data. Support of adequate representativeness of field data where the structure has been in service for an extended time and especially in those cases when the entity was not equipped with embedded monitoring-measuring apparatus that could be restored after failing is a difficult, but very urgent problem, |
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N. D. Belyaev V. V. Vil’kevich 《Power Technology and Engineering (formerly Hydrotechnical Construction)》2007,41(4):201-207
Characteristic features of assessment of the technical condition of mooring and ship-building structures are analyzed.
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Translated from Gidrotekhnicheskoe Stroitel’stvo, No. 5, May 2007, pp. 37–44. 相似文献
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V. V. Kayakin 《Power Technology and Engineering (formerly Hydrotechnical Construction)》2009,43(3):156-159
The risk and probability of terrorist acts is evaluated for water-development works. 相似文献
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A. G. Alimov 《Power Technology and Engineering (formerly Hydrotechnical Construction)》2008,42(5):277-280
This paper is devoted to monitoring of the anti-filtration effectiveness of protective linings of water-conducting mechanical
structures, for example, irrigation canals, water-development works, and accumulating water bodies.
Translated from Gidrotekhnicheskoe Stroitel‘stvo, No. 8, August 2008, pp. 18–21. 相似文献
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B. B. Bogush A. N. Mitrofanov N. I. Stefanenko 《Power Technology and Engineering (formerly Hydrotechnical Construction)》2009,43(1):1-6
Implementation of on-going monitoring at the HPP will make it possible to solve the problem of improving safe operation of
the structures.
Translated from Gidrotekhnicheskoe Stroitel’stvo, No. 11, November 2008, pp. 19–24. 相似文献
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V. N. Shchedrin Yu. M. Kosichenko 《Power Technology and Engineering (formerly Hydrotechnical Construction)》2011,45(4):264-269
A safety declaration is a fundamental document assuring the safety of water-development works, their correspondence to safety criteria, the design, and active technical regulations and rules. 相似文献
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Yu. B. Mgalobelov A. V. Deineko 《Power Technology and Engineering (formerly Hydrotechnical Construction)》2011,44(5):356-361
A modern approach is proposed for analytical investigation of the stress-strain state, strength, and stability of water-development works. Actual trends in the refinement of analytical investigations are noted: incorporation of parallel-calculation technology, integration of analytical programs and automated design systems, development of structural analyses, etc. A procedure for consideration of the influence exerted by massive production equipment on the stress-strain state of a structure DURING a seismic event is examined. 相似文献
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A. T. Bekker V. S. Lyubimov R. G. Kovalenko A. V. Aleksandrov 《Power Technology and Engineering (formerly Hydrotechnical Construction)》2011,45(3):175-179
Considering that corrosion takes place as a random process over time, a a probabilistic approach was utilized in this paper.
The corrosion of metallic sheet piling employed in the fascia wall of a bulwerk is considered as an example. A stochastic
model is constructed on the base of a modified Weibull distribution function with consideration of parameters of the corrosion
process as a function of time. One of the factors defining the corrosion rate of the sheet piling is the degree of access
of a section of the wall to the zone of variable water level, or the underwater zone. The type of corrosion—continuous or
local—is another factor. The accuracy of corrosion prediction in the underwater zone is higher than that in the zone of variable
water level. 相似文献
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