Maintenance and exploitation problems of underground drainage and necessity of replacing equipment in underground drainage construction.

摘要

Changing technology of underground drainage from conventional digging procedure to underground drainage installation without digging (no dig) results in using no grab crane or trencher and eliminating secondary equipments, lowering fuel consumption with many environmental containments in drainage construction process. Avoidance of using this machineries reduces unit price of construction operation and increases speed of process and also prevents problems of conventional approach like horizontal and vertical distortions in lateral installing which complicate exploitation. Remaining agricultural lands in production cycle during underground drainage construction is another consequence of this procedure change. Also, customization of this approach and making appropriate bed for underground drainage installation by local contractors speed up underground construction process.