Researches on the modernization of the conduct network from old pressure irrigation systems

Abstract

The paper presents a series of concepts regarding the rehabilitation and modernization of the pipeline network in irrigation systems with sprinkling. Old spray irrigation systems in operation for about 30-40 years show wear and aging phenomena of structural components (pipes, pits, hydrants). Research on about eight sprinkler irrigation plot with pipeline networks in various exploitation concepts highlighted the complexity of the rehabilitation and upgrading process. Rehabilitation of the pipeline network is based on the type of irrigation equipment with which the irrigation plot is fitted. In the case of plots equipped with monofilament pumping stations the tertiary distribution pipeline is rehabilitated at the level of the current technique and automation equipment is introduced. The rehabilitation process must be carried out in successive stages and using modern materials and technologies of endowment and execution. Case studies developed for sprinkler irrigation plots located in Moldova are customized on the modernization directions adopted by the beneficiary: pivot spraying equipment, longitudinal displacement equipment, fixed watering equipment, etc.