Definition - What does Auger Boring mean?
Auger boring can be defined as a method of boring beneath the earth’s surface by means of a jack and a bore. It works by simultaneously jacking the casing pipe while the rotating augers remove the excavated soil.
In trenchless technology, auger boring is widely used for installing pipes under railway lines, highways and levies, where settlement is an issue.
Trenchlesspedia explains Auger Boring
Auger boring is also known as dry boring because unlike other methods of boring, no slurry is generated.
During auger boring, a cutting head with a slightly larger diameter than the casing pipe excavates the soil just in front of the casing. The helical rotating auger blades carry the soil back to the machine where it is removed either by hand or machine. The auger boring machine runs along a track which is aligned with the casing pipe where it has to be installed. After the machine finishes the assigned track, the machine is disconnected and the auger assembly is brought back to the starting point where a new casing segment is welded to the previously installed casing. The process is continued until the entire pipeline is completed.
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Auger boring is cost-effective and less time-consuming. A good understanding of soil conditions where auger boring is to be carried out is essential while designing these projects, so geotechnical reports and investigations are indispensable.