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EMDE Bohrtechnik Nentershausen GmbH
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EMDE-Bohrtechnik - Double-Head Drilling ...

EMDE-Bohrtechnik - Double-Head Drilling with Hydraulic Hammer Drill

FromEMDE Bohrtechnik Nentershausen GmbH

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During double-head drilling with hydraulic hammer drills, both drill strings are bored into the ground in opposing directions. For this purpose, a dual head drilling system is used. The drilling waste is conveyed upwards by a flushing medium in the annulus space between the outer and inner tube. This drilling process makes it possible for the outer protective tubing to be only partly positioned.

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Double-head drilling: Available system components

EMDE offers the following components for double head drilling and hammer drills:

Drive rotary swivels
Compensation rods with adaptors
Inner rod with impact core cutter
Notch bits for drilling against pressing water
Discharge sockets for all common rotary drives
Drive flanges for protective tube
Injection adaptors and injection pistons
Rotary drilling tubes as monoblocks or with pre-welded and hardened threaded connectors
Ring drilling crowns with hardened metal tip

Double-head drilling: Area of application

This drilling method will be used mainly in varying soil conditions and groundwater under pressure.