METHODS OF TUNNELING IN ROCK
In This Article We Covers Methods Of Tunneling In Rock Briefly, Following Method Of Tunneling In Rock, Drift Method Heading And Benching Method Full Face Method Cantilever Car Dump Method NATM Method 1) Drift Method Drift Method Consist Driving Small Sized Heading, Centrally At Top Or Bottom Of Face, Which Later Enlarged By Widening And Benching. This Method Suitable For Large Sized Tunnels In Difficult Or In Hard Rock. Top Drift Method Is Popular And Involves Operation Like, Boring And Blasting A Top Center Of Drift Widening And Enlarging The Drift Benching In Stages Methods Of Tunneling In Rock By Drift Drift Method Is One Of The Methods Of Tunneling In Rock. Drift Method Also Know As Multiple Drift Method. Advantages Of Drift Method A Small Preliminary Section For The Full Length Has Been Accurately Driven, Which Economies Construction. Elaborate Supporting Platforms Not Necessary For Drilling Operations. It Provides Good Ventilation For Workers. Disadvantages Of Drift Method The Enlargent Can Not Started Until Central Hole Constructed For Full Length. Mucking Tracks Required To Shift Frequently, Bench to Bench. This Method Extremely Costly. 2) Heading And Benching Method This Method Involves The Drilling Of The Top Portion In Advance Of Bottom Portion. If Rock Is Hard And Self Supporting, Then Top Heading Advances Ahead By One Round Over The Bottom, So That Heading And Benching Follow Each Other. Read the full article
