Comments

• 

  Comment on "Comments"

  Drill & Blast tunnelling is far more harmful to the workers' lungs compared to the TBM tunnelling.

  1489 days ago

• 

  Comment on "item:object:river_object"

  ...two months. https://www.bridgemi.com/michigan-environment-watch/enbridge-lost-rods-straits-it-didnt-tell-michigan-two-months #environment #harmful #tunneling #tunnels...

  1624 days ago

Discussion topics

• 

  Breakthrough Hongdoushan Tunnel of toxic dangereous gases tunnelling problem

  ...y breakthrough. Very special difficult tunnelling conditions toxic and harmful gases. During Dalin Railwa...Hongdoushan Tunnel is 10,616 meter excavation 8 kinds of poisonous and harmful gases came. Overcoming pro...

  1407 days ago

• 

  China Tunnel Technology: CFD analysis of jet fan layout optimization at intersection of branch tunnel and main tunnel

  ...To solve the ventilation tunnel pressure in the main hole with a certain slope tunnel junction produces high concentration of dust particles and harmful gas is difficult to get rid o...

  78 days ago

• +11 more Discussion topics