Microtunnelling Services

Pipe jacking & Microtunneling process is a cyclic pipe jacking operation. A microtunnel boring machine iseki Microtunneling machines is pushed into the earth by hydraulic jacks mounted and aligned in the jacking shaft. The jacks are then retracted and the slurry lines and control cables are disconnected. A product pipe or casing is lowered into the shaft and inserted between the jacking frame and the iseki Microtunneling machines or previously jacked pipe. Slurry lines and power and control cable connections are made, and the pipe and iseki Microtunneling machines are advanced another drive stroke. This process is repeated until the iseki Microtunneling machines reaches the reception shaft. Upon drive completion, the iseki Microtunneling machines and trailing equipment are retrieved and all equipment removed from the pipeline.most Microtunneling operations include a hydraulic jacking system to advance the iseki Microtunneling machines and pipe string, a closed loop slurry system to transport the excavated spoils, a slurry cleaning system to remove the spoil from the slurry water.

A lubrication system to lubricate the exterior of the pipe string during installation, a guidance system to provide line and grade control, an electrical supply and distribution system to power equipment, a crane to hoist pipe sections into the jacking shaft, and various trucks and loaders to transport spoil off siteiseki Microtunneling machines have a rotating cutting head to excavate the ground material, a crushing cone to crush larger particles into smaller sizes for transport through the slurry lines, a hydraulic or electric motor to turn the cutting head, a pressurized slurry mixing chamber behind the cutter head to maintain face stability,