In this study, polyurethane foam type thermoset polymerizing, due to chemical reaction between its liquid ingredients, was tested as binder after solidifying an
The construction of the double-lane five-step ship lock of the Three Gorges Project (TGP) wascommenced in 1994, the excavation of the ship lock was completed by t
The paper presents an analysis of the horizontal displacement of surfaces induced by exploitation in a longwall panel. The panel under discussion is No. 698 of
Application of mechanical excavators is one of the most commonly used excavation methods because it can bring the project more productivity, accuracy and safety