Application of TBM rapid tunneling system in rock roadway of Hancheng mining area
The geological conditions of Hancheng mining area are complicated,especially in the north second mining area of Sangshuping coal mine,the developing roadway crossing through the coal seam,and the hardness of the roadway varying a lot,there are difficulties in the rock excavation and support,the roof of the coal seam is broken,and the spalling of the wall is serious.We have developed a rock roadway TBM rapid tunnelling system under the complicated geological conditions.The mechanical system of TBM rapid tunneling system consists of cutter plate,propulsion,support,drilling and anchoring sys-tems,and the control system consists of navigation,monitoring and control systems,etc.The TBM rapid tunneling system is highly integrated,and can realize the parallel and continuous operation of multiple processes such as excavation,supporting,and slagging etc.The number of operators at the driving face of has been reduced from 18 to 8,and the maximum daily foot-age of the system is 17.9 m,and the maximum monthly footage is 352 m.The TBM rapid tunneling system has increased the efficiency of the tunneling,improved the quality of roadway formation,reduced the number of workers,and solved the prob-lems of slow construction speed and imbalance of mining and excavation in rock roadway under complex geological condi-tions.
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