To maximize the efficiency of milling excavator operations, it is necessary to standardize operations from multiple aspects such as equipment debugging, construction operations, working condition matching, and daily maintenance, reduce ineffective shutdowns, and improve excavation capacity.

Before starting work, it is necessary to conduct a survey of the working conditions and equipment debugging. Corresponding cutting teeth should be replaced according to the hardness of the rock layer. For soft rocks, wide blade cutting teeth should be selected to increase the cutting amount, while for medium hard rocks, thickened wear-resistant teeth should be assembled to avoid rapid wear of the tooth body and reduce the cutting speed. Clean up the debris in the tunnel in advance, plan a reasonable slag discharge route, ensure that the loader follows up synchronously, achieve seamless connection between milling and slag discharge, and prevent equipment blockage caused by material accumulation. Control the milling depth and travel speed during operation, and avoid excessive depth in a single cut. Sweep horizontally at a constant speed to reduce equipment overload and downtime. Accurately control the excavation contour, reduce the secondary trimming time caused by over excavation and under excavation, and improve overall efficiency by 30%.

The team implements segmented flow operations, with synchronous division of labor for milling, excavation, support, and slag removal, changing the single process waiting mode. Traditional blasting requires suspension of work for ventilation and risk mitigation, while milling and excavation can be carried out continuously. However, it is necessary to regularly stop and clean the machine body for sticking materials, check the oil pipes, and prevent material blockage and oil leakage from delaying the construction period. Compact mining milling excavators are preferred for narrow tunnels, with flexible adjustment of rotation angles to reduce the number of machine body movements. The tunnel can be brushed and buried in one go.

Daily maintenance is the key to long-term success. After each shift, clean the milling drum and gravel in a timely manner, add lubricating grease, check the hydraulic system and heat dissipation device daily, and avoid high temperature and power reduction. Regularly replace worn cutting teeth to prevent blunt teeth from idling and consuming power, and slowing down cutting speed.

Overall, reasonable matching of accessories, standardized operation, streamlined construction, and scheduled maintenance can significantly increase the daily excavation volume of underground milling excavators, reduce consumables consumption and downtime, and achieve triple benefits of safety, high yield, and cost reduction.