Specification

Microtunnelling is a technology for horizontal steered drilling, which equipped with self-propelled hydraulic installation tubes are pushed through the chamber embedded in pushing home station.

The laser beam controlls the drills track, observed on the monitor by the operator of drilling equipment. Operation control is from the steering position located above the chamber start.

First part of the drilling head can be tilted within a few degrees from the axis of the tube follower circuit so that drilling can be readily corrected.

Drill head is made of a rotary blade and crusher excavation output. Transportation of excavated material is realized by means of drilling mud.

Dane techniczne

Technical data

Type	UM-100/114	UM-130/170
drilling diameters	980 mm, 1120 mm	1295 mm, 1725 mm
nominal length	150 m	200 m
Starting chamber: length width	6500 mm 3000 mm	6500 mm 4000 mm
transportation of excavated material	washing	washing
control of the direction of drilling	laser	laser
tilt control	about 3 degrees	about 3 degrees
drive	hydraulic exhaust unit	hydraulic exhaust unit
engine power	110 kW	130 kW
mass	48 600 kg	60 000 kg

Microtunneling technology

From the construction site

setting the drilling head on the pushing station in the starting chamber

 

 

drilling and pressing jacking conduit (Hobas)

 

 

control of drilling parameters on the monitor in the wheelhouse

 

 

drilling head exit on the final chamber

 

 

preparing to pull the head after the completion of drilling

 

 

drawing of drilling head drill diameter of 980 mm and length 150 m compleated successfuly