Application of TBM Construction Technology in Excavation of Long-distance Transportation Roadway in Metal Mines
When the drilling and blasting method is used to construct the long-distance transportation roadway in the metal mine,the slag transportation is difficult,the safety management is difficult,and the construction progress is slow.The TBM construction can effectively overcome the above unfavorable factors.Taking the construction of long-distance transportation roadway in a metal mine as an example,combined with the characteristics of the project,it is determined that the TBM equipment is transported from the auxil-iary ramp to the middle section of the construction for underground assembly,and then the construction of the middle section transportation roadway is started.After the TBM construction is completed,a middle road-way is constructed,and then the upper middle roadway is constructed.After the construction is completed,the machine is removed and transported to the surface through the ramp.After TBM construction,the road-way section is a regular circle,the surrounding rock is not affected by blasting vibration,and the safety con-dition of the working face is good.The monthly footage of TBM construction is 450～500 m,and the construc-tion progress is greatly improved.At the same time,the working face environment has been greatly improved by using the rail-laying battery car to pull the shuttle car out of the slag without using the fuel equipment such as the forklift and the trackless slag car.
TBM construction technologyunderground tunnelingout of the slag
NETL
NSTL
万方数据
