###### Abstract  
The demand for tunnel construction continues to grow by leaps and bounds. Therefore, tunnel mechanization construction is receiving more and more attention for improving excavation ergonomics. To enhance the scientific and comprehensive evaluation results of tunnel drilling and blasting method excavation ergonomics, a set of evaluation methods of tunnel drilling and blasting method excavation ergonomics based on the game theory G2-EW-TOPSIS model is proposed. From the three dimensions of drilling efficiency, construction process duration, and synergistic influence factors, a tunnel drilling and blasting construction ergonomics evaluation index system consisting of 11 indicators such as perimeter hole drilling efficiency, drilling duration, construction quality, and comprehensive cost is constructed. The subjective and objective weights of evaluation indicators are calculated by using the improved sequential relationship analysis method (G2 method) and entropy weight method, respectively, and the combination weights are carried out by using game theory method (GTM) with the Nash equilibrium as the goal. The indices are classified into five grades: excellent (I), good (II), average (III), rather poor (IV), and poor (V), according to the daily tunnel construction. The excavation ergonomics index to be evaluated is calculated using the combined weights, and the comprehensive evaluation index of excavation ergonomics to be evaluated is calculated using the technique for order preference by similarity to an ideal solution (TOPSIS). The proposed rating model was used to analyze the excavation ergonomics of the Shanghaiing Tunnel in the Chizhou-Huangshan High-Speed Railway using jumbo drills (JD) and drilling machines (DM) in large- and small-mileage construction, respectively, and to obtain the excavation ergonomics rating and comprehensive evaluation rating of each evaluation object. The research results show that the established excavation ergonomics evaluation model can effectively identify the main factors affecting the excavation ergonomics of the drill and blast method, and has a certain reference value. occupational diseases. This is contrary to the people-oriented and green development construction concept [6; 7; 8]. How do we improve the mechanization level of tunnel construction, reduce the labor intensity of construction personnel, and the comparison of mechanized construction ergonomics and manual construction ergonomics, which has been the focus of tunneling research [9; 10; 11; 12]? Therefore, we need to establish a tunnel drilling and blasting excavation ergonomics evaluation ergonomics, and conduct a quantitative analysis and evaluation. This paper constructs an evaluation system for the ergonomics of drilling and blasting excavation, calculates the weights of the indicators, and uses the TOPSIS method for evaluation. In the evaluation process, determining the weight of the evaluation indicators is one of the prerequisites for achieving scientific evaluation. In order to achieve a scientific evaluation, each evaluation indicator needs to be assigned an appropriate weight. Commonly used indicator weights are subjective and objective weights. Among them, the subjective weight calculation methods include the analytic hierarchy process (AHP) [13], sequential relationship analysis method (G1 method) [14], G2 method [15], Delphi method [16], etc., and the objective weight calculation methods include the entropy weight method (EWM) [17], criteria importance though intercriteria correlation method (CRITIC) [18], coefficient of variation method [19], etc. The subjective and objective weighting methods have their own advantages and disadvantages, and their effective combination can adjust the value range of the indicator weights to obtain more accurate weights. GTM can combine multiple methods to achieve the overall optimal solution by competing with each other with the goal of the Nash equilibrium.