Hamedan Sewerage via Pipejacking Method

Project Overview

The scope of the project included the procurement, transportation, installation, testing and commissioning of polymer concrete pipes using the pipe jacking method. The total length of the project route was 7,048 meters, of which 5,954 meters were piped in sizes of 1,200 and 1,400 mm using the pipe jacking method. Due to the extremely unfavorable geological conditions of the city of Hamedan, 812 meters of the route were executed as open trenches and the remaining 282 meters were executed using the hand shield method. Special polymer concrete pipes were used for the project, and in order to procure the pipes from domestic sources, a factory belonging to Kayson (Polymer Concrete Pipe) was built and operated in Iran.

Due to the lack of experience and expertise in selecting appropriate machinery, pipe jacking has not previously been successful in Iran. But the Kayson/Mushrif JV was able to successfully complete the project with the support of the Client, consultant, and project management unit, as well as the patience and effective cooperation of the people and officials of Hamedan.

Pipejacking Method

Kayson received the highest award for project management in 2009 for the Hamedan Sewage Project. Pipe jacking method using micro tunneling devices is one of the direct pipe installation methods. In this method, the pipe route is dug with special drilling devices for this method and at the same time, the pipes are pushed in with the help of hydraulic jacks. In order to carry out operations such as positioning the jack, drilling device and control equipment and carrying out pipe laying operations, a pit called the Driving Shaft is constructed at the beginning of the route and in order to receive the equipment at the end of each line, a Receiving Shaft is constructed. The pipeline installation control system (Leveling and alignment) is carried out using precision instruments and lasers.

Successful installation of pipes using this method requires detailed geological studies, proper design, selection of equipment and systems appropriate to the soil texture and groundwater level, use of advanced technology, and sufficient experience. Successful installation of pipes using this method requires detailed geological studies, proper design, selection of equipment and systems appropriate to the soil texture and groundwater level, use of advanced technology, and sufficient experience.

Project Statistics