№12|2015

WATER DISTRIBUTION NETWORKS

bbk 000000

UDC 628.1

GALPERIN E. M.

On hydraulic calculations of a loop water distribution network
(to be discussed)

Summary

During the operation a loop water distribution network is subject to both disturbing impact and control activities. Disturbing impact aims at changing the state of the network. At that the operating personnel try to maintain the network in 100% working conditions at minimum costs by the control activities. Disturbing impact is caused by water consumption alterations and pipeline failures that arise stochastically. In the process of hydraulic designing water consumption variations are simulated with so called specific modes chosen at the most crucial moments of the water network operation. Hydraulic calculations of the specific modes are carried out provided the network is in complete function. The model of a loop water distribution network operation does not take into account the disturbing impact of failures. The construction rules and regulations determine only the level of the network operation in case of a single section cutoff. For simulating the process of failure occurrence and elimination the use of the mathematical tools of a queue system is suggested. The calculations show that at the existing water network failure rate and repair time the loop water distribution network is in non-operating condition at least for three and more weeks over a year. The procedure of hydraulic calculation of a loop water distribution network with account of occurring failures and repair time is suggested.

Key words

, , , , ,

The further text is accessible on a paid subscription.
For authorisation enter the login/password.
Or subscribe

REFERENCES


  1. Somov M. A., Zhurba M. G. Vodosnabzhenie. T. 1. Sistema zabora, podachi i raspredeleniia vody [Water Supply. V. 1. The systems of water abstraction, supply and distribution: college textbook. Moscow, ASV Publ., 2010, 262 p.].
  2. Makogonov V. S. Issledovanie nadezhnosti vodoprovodnykh setei [Study of water network integrity: Ph. D. thesis in Engineering Science. Moscow, MISH Publ., 1972, 145 p.].
  3. Abramov N. N. Nadezhnost’ sistem vodosnabzheniia (Nadezhnost’ i kachestvo) [Reliability of water supply systems (Reliability and quality). Moscow, Stroiizdat Publ., 1979, 231 p.].
  4. Venttsel’ E. S. Issledovanie operatsii. Zadachi, printsipy, metodologiia [Study of operations. Tasks, principles, methodology. Moscow, Nauka Publ., 1980, 208 p.].
  5. Gnedenko B. V., Kovalenko I. N. Vvedenie v teoriiu massovogo obsluzhivaniia [Introduction to the queueing theory. Moscow, Nauka Publ., 1987, 336 p.].
  6. Khramenkov S. V. [Principles of ensuring the water distribution network integrity under the conditions of water consumption reduction]. Vodosnabzhenie i Sanitarnaia Tekhnika, 2003, no. 5, part 2, pp. 27–31. (In Russian).
  7. Gal’perin E. M. [Calculation of a loop water network]. Vodosnabzhenie i Sanitarnaia Tekhnika, 2003, no. 8, pp. 26–29. (In Russian).
  8. Gal’perin E. M., Shapkin N. V. [Methods of improving the reliability of water distribution network operation]. Vodosnabzhenie i Sanitarnaia Tekhnika, 2013, no. 8, pp. 28–33. (In Russian).

vstmag engfree 200x100 2

mvkniipr ru

Российская ассоциация водоснабжения и водоотведения

Конференция итог

ecw20 200 300

VAK2