## 2 Framework Analysis and Model Construction
To sum up, this paper introduces the fsQCA method and proposes five variables from the four levels of technology, organization, environment, and resources to build an analysis framework of the factors influencing the intelligent and efficient construction of coal mines (Figure 1) and analyzes and explains each influencing factor. Figure 1: Analysis framework of factors influencing the construction of intelligent coal mines. (1) Technology  
The technical level mainly includes research funds and technical talent. Scientific and technological innovation is the internal driving force for development [19]. The technological innovation of the intelligent development of coal mines is to deeply integrate contemporary front-end technology and coal mining technology so as to realize the construction of intelligent coal mines [20]. In order to realize the real intelligent transformation of coal mines, it is necessary to fully adopt and integrate the advanced technology and equipment of relevant industries at home and abroad [21], increase research and development investment in China's intelligent coal machine equipment, and further optimize and improve the level of national intelligent coal machine equipment. Therefore, it is not unreasonable to take the research and experimental development (R & D) fund, which is commonly used to measure the intensity of scientific and technological resources allocation, as a technical index to evaluate the performance of the construction of intelligent coal mines [22]. Intelligent coal mines will be unmanned, but not entirely, because high-tech and sophisticated information technology talent is indispensable [23]. The development of the Internet industry is closely related to the intelligent development of coal mines. The coal industry urgently needs compound talents to ensure the sustainable development of high-tech development [8]. It can be seen that intelligent construction will deeply root a new generation of information technology, high-end intelligent equipment, and high-level compound talent in the industry and enable the coal industry to transform from a traditional resource-dependent and labor-intensive industry into a technology-intensive and knowledge-intensive high-tech industry. Solving the problems of technological innovation and the shortage of professional talent is the key factor to breaking through the constraints on the intelligent construction and development of coal mines [24]. At the technical level, this paper is mainly focused on research funds and technical personnel. (2) Organization  
The organizational level mainly refers to the degree to which the government's role is important. The current situation of intelligent coal mine technology shows that the government's guidance and support will promote the diffusion of digital technology [25]. Therefore, intelligent coal mines need to be policy-oriented and pool the joint forces of government, academic, industrial, and financial communities [17]. If the incentive policies are weak, the procedures are complex, and the conditions are strict, the driving force for coal enterprises to adopt high-tech equipment will be insufficient [26]. Before and after 2020, intelligent coal mine policies at the provincial level have been planned in terms of construction objectives, contents, acceptance grading, and even standard formulation, which has played an irreplaceable role in promoting the research and construction of intelligent coal mines [17]. Although there are slight differences in the starting points and implementation progress of intelligent coal mines, it can be seen that the government's high degree of importance and strong support will only increase the construction results in this area. The degree of attention paid by the provincial and regional governments has great significance for promoting the sound development of intelligent coal mines. Therefore, at the organizational level, this paper focuses on the degree of government emphasis. (3) Environment  
The environmental level mainly refers to the national demonstration.