Horizontal Earth Boring Machine
Definition - What does Horizontal Earth Boring Machine mean?
A horizontal earth boring machine is a heavy duty piece of machinery that helps bore holes under the surface of the ground or under existing structures with minimum breaking of surface soil. Using earth boring machines are efficient and economic. These machines are useful for installations where trenchless technology is applied. The trenchless process used with these machines is micro-tunneling which is often used to install pipelines beneath highways, runways, rivers and railways.
Also referred to as a microtunnel boring machine (MTBM).
Trenchlesspedia explains Horizontal Earth Boring Machine
The horizontal earth bring machine, or the microtunnel boring machine, is operated remotely from the surface to make small diameter tunnels. They operate similar to tunnel boring machines but on a much smaller scale. These boring machines are pushed beneath the earth by hydraulic jacks mounted on a jacking shaft. The boring machine is equipped with a cutting head and crushing cone that excavates and crushes bigger particles and removes them through the slurry lines into the pressurized slurry mixing chamber. Using a laser guidance system, the bore is guided at the correct grade and slope. These machines can independently counter-balance hydrostatic pressure by using pressurized slurry in the soil mixing chamber and earth pressure by controlling the excavation rate of material and the advance rate of the machine.