Abstract:Through analyzing the process of cutting rock with the cutting teeth of cantilever roadhead, the test method of cutting teeth is put forward. Taking the actual mine as the research object, the rock sample of mine site was obtained to carry out the rock cutting test with single cutting tooth, and the maximum cutting force and specific energy consumption of rock cutting tooth were tested. The cutting force of the cutting head of type 160, 200, 260 and 380 roadheader is transformed into the cutting force of single cutting tooth, and compared with the test results of cutting tooth cutting rock, so as to recommend the cutting power of roadheader that meets the requirement of rock cutting ability. Cantilever roadheader only meets the requirement of rock breaking capacity is not enough, the higher the cutting capacity of general roadheader, the higher the cutting efficiency of its equipment, but the higher the price of equipment. Therefore, based on the above research results, the cutting efficiency and production capacity under the actual working conditions are predicted, and the mining operation technical and economic indicators are calculated in detail, so as to realize the optimization of cantilever tunneling machine. Finally, the cantilever tunneling machine suitable for the mine is recommended as 260 cantilever roadheader.