Abstract: Mechanization is essential for improving the safety and environmental conditions of tunnel drilling and blasting operations. Currently, China is facing serious problems with regard to tunneling, such as difficulties in recruiting blasting workers, fully utilizing the drilling trolley, construction by more workers, and serious overexcavation. To address these problems, drilling using highefficiency rock drilling trolley and charging using underground special explosivemixed loading vehicles are needed. However, the tunneling method and management system are not compatible with the drilling trolley, the drilling trolley is expensive, and the mechanized charging has regulatory obstacles. Following solutions to these problems are proposed from the aspects of technology and management: (1) Tunneling method must be improved with the reinforcement scheme first, followed by large crosssection excavation for weak surrounding rocks to match with the mechanized drilling and blasting operations. (2) The malfunction rate and cost of the homeproduced drilling trolley should be continuously reduced. (3) The innovation in the civil explosives management system should be promoted, and the purchasesale and administrative licensing of mixedexplosive vehicles should be simplified based on the process control platform for explosive purposes and amount. (4) The tunnel drilling and blasting professionals should be motivated. (5) The tunnel construction management system should be further improved, and the international traditional design and construction general contracting mode should be popularized.

Key words: tunnel, drilling and blasting operations, mechanization, drilling trolley, charging vehicle