Tunnel face drill rigs

Mine Master drill rigs (also known as underground drill rigs, master rigs or face drilling rigs) are primarily utilized in underground mines (hard rock & soft materials) and tunnel construction. [pdf]

China Tunnel Rock Drilling Machine Parameters

Compared with the drill and blast method, TBM tunnelling has significant advantages with high construction efficiency, low project cost, conducive to environmental protection, favorable stability contr. [pdf]