Evaluation of Excavation Ergonomics of Drill and Blast Method Based on Game Theory G2-EW-TOPSIS Model

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 Shangtianling 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.

Research on the Resilience Evaluation of Urban Rail Transit Construction Organization Based on the Cloud Matter-Element Model: A Case Study of Nanchang West Station

“…In terms of construction organization safety factors, Einstein et al proposed tunnel decision support (DAT) to predict various uncertain risk factors in the process of underground construction organization and found that the tunnel construction process can be continuously updated through exploration [24]. Based on the game theory G2-EW-TOPSIS model, Yang et al found that construction quality is the core index in the process of tunnel construction [25]. Guha used factor analysis, multiple regression, and other methods to analyze the safety management problems of existing construction organizations in Kolkata, India.…”

“…According to the principle of maximum membership degree, the evaluation grade of the construction organization resilience of Nanchang West Station in the first section of the first phase of Nanchang Metro Line 2 is determined to be grade IV (higher resilience) using Formula (25). According to Formula (26), it is finally found that the comprehensive score value j * of the construction organization resilience of Nanchang West Station is 4.0305.…”

“…This shows that the evaluation results of the construction organization resilience of the Nanchang West Railway Station project are consistent with the cloud droplet results generated by the model. According to the principle of maximum membership degree, the evaluation grade of the construction organization resilience of Nanchang West Station in the first section of the first phase of Nanchang Metro Line 2 is determined to be grade IV (higher resilience) using Formula (25). According to Formula (26), it is finally found that the comprehensive score value…”