Mechanised Driving

Mechanised Driving in Subsoil prone to Clogging, Part 1

Subsoil prone to Clogging, Part 1

Optimal harmonisation between the subsoil and process technology is of decisive importance in tunnelling. The topic is dealt with in 2 parts. In this first part the different driving methods are examined, the subject of clogging presented and it is demonstrated when the subsoil is actually prone to clogging. Towards this end, particular attention is paid to how the grain distribution of the excavated material has been altered through the excavation process compared to the original material.

Optimal harmonisation between the subsoil and the process technology is of decisive importance in tunnelling. The more frequently changing subsoil conditions can occur, the less their extent can be estimated and the harder they are able to be localised in advance so that the existing process technology has to be all the more adjustable. This especially applies to mechanised tunnelling so that 2 key questions must be answered in advance:
– Which subsoil conditions mainly prevail and how can the best performance be attained when using a particular process technology under these circumstances?
– Ho...

Related articles:

Issue 2014-03

Influence of Clogging on the Muck Transport in Shield Machines

Conveyance of the excavated material from the cutting wheel towards the rear must therefore be carried out by a circuitous route with the material first being lifted by the cutting wheel and then...

more
Issue 2014-04 Sweden

Hallandsås Rail Tunnel Extreme Excavating Conditions

The Malmö-Göteborg rail line, one of the country’s arteries for passenger and goods traffic, has been upgraded as a high-speed route, which will reduce travelling time between the two centres by...

more
Issue 2009-02 Mechanised Driving

Mechanised Driving in Subsoil prone to Clogging, Part 2

Selecting the Driving Technology Optimal harmony between the subsoil and the process technology is essential for a successful excavation. In this connection the driving technology must adapt to the...

more
Issue 2014-08 Austria

63rd Geomechanics Colloquium in Salzburg

The 63rd Geomechanics Colloquium staged by the Austrian Society for Geomechanics (ÖGG) took place on Oct. 9 + 10, 2014 in Salzburg’s Congress Centre with about 800 participants from various nations....

more
Issue 2011-06

Mechanical and process-technical Characterisation of the Rock influenced by interactive Behaviour of Machine – Ground

1 Introduction In the case of TBM drives the excavated material is subject to numerous processes of change while being extracted by the cutting wheel right up to being discharged at the portal, which...

more