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The Environmental Benefits of Horizontal Directional Drilling

The economical and ecological advantages of trenchless technologies compared with open trenching are obvious: Valuable surfaces are protected, time-consuming and expensive excavation and restoration work is not required, there are no traffic diversions and the actual construction times are shortened significantly.

Trenchless installation means: it is much safer, there is no surface damage, no disruption to residents or traffic flow and with minimal excavation work, less construction equipment/plant is required and noise and CO2 emissions are kept to a minimum.

Horizontal Directional Drilling

Horizontal Directional Drilling or HDD, is a steerable trenchless method of installing underground utilities in a prescribed path bore (straight or curved) example under roads, rivers, railways, buildings etc. by using a surface launched drilling rig. The installation technique is extremely protective towards the environment, causing no ecological damage.

Pipe Cracking

Pipe cracking is a technique used to fracture an existing pipeline from the inside using a pipe cracking head. During this process the mechanical device pushes the broken pipe remains into the surrounding ground while at the same time draws a new pipe of the same or larger diameter in place behind the cracking device. Pipe cracking is also referred to as pipe bursting or pipe splitting.

Moling / Grundomat Soil Displacement

The pneumatically driven hammers work according to the soil displacement method, when moving forward the spoil is displaced into the surrounding soil. A channel is produced into which socket less short or long pipes up to OD 160 made of plastic (HDPE) or cables can be pulled in. Depending on the type of soil, lengths of up to 25 m can either be pulled in simultaneously or later. A compressor with 6 – 7 bar operating pressure is required for this, with exact alignment of the machine towards the target necessary for high on-target accuracy.