Research and Application of Shield Technology for Tunneling in Hard Rock of Coal Mine
For the coal mine hard rock tunneling low efficiency,low level of mechanical automation,poor operating environment and high labour intensity and other issues,and in order to reduce the working face back to mining process of gas concentration,the selection of EQS3000 hard rock full-section shield tunnelling equipment construction of high pumping alleys,the results show that the shield machine can be continuous tunnelling,support and gangue discharge operations to achieve the rocky average daily footage of 20.26 m,up to 51 m,up to 60 m.The shield machine can be used in the construction of the tunnel,the highest footage can be up to 60 m,the highest footage can be up to 60 m,and the highest footage can be up to 51 m.Up to 51 m,up to 608 m per month into the traditional digging efficiency of 3 to 4 times,improve the safety of coal mine roadway digging environment,with a high level of mechanisation,truly realised the"mechanisation for man,automation reduces man".At the same time,the new mode of rock tunneling and gangue underground filling opens up a new way of thinking for the realisation of green mining.
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