Understanding the distribution and characteristics of tunnel noise is a prerequisite for noise control and prevention. Tianba Shierpo construction tunnel was established as the prototype, the noise of key regions was measured, the law of noise in key areas was explored. Using discrete wavelet transform, the energy distribution characteristics of the main noise sources in the tunnel were defined, noise hazards are classified. The results show that the frequency spectrum distribution of fan and shotcrete noise is similar, and shotcrete noise is discrete noise. The root cause of the difficulty of noise control in tunnel is the different intrinsic characteristics of different noises. The pattern of energy distribution for fan and shotcrete noise exhibits an initial increase, followed by a decrease, and then another increase, whereas the drilling noise displays a decline initially followed by an increase. It can be graded according to the damage to human body as, drilling > shotcrete > fan.

Major science and technology projects enlisting and leading, as a new organizational and management approach to tackling key core technologies, is gradually becoming an important mechanism for promoting technological innovation and stimulating industrial vitality. The concept of the major science and technology projects enlisting and leading was firstly explained. Then, using the practice of Zhejiang’s major science and technology projects as a typical case, the top-level design, operational models and key initiatives were reviewed. Finally, suggestions such as strengthening the top-level design in multiple dimensions are summarized and put forward from the perspective of integration and innovation, deepening the application of horse racing mode and reward mode, and mobilizing the enthusiasm of leading backbone enterprises and other diversified innovation subjects, so as to ensure the effective implementation of major science and technology projects enlisting and leading, which can provide reference for optimizing the establishment, organization and management of major scientific and technological projects and improving the efficiency of scientific research organizations.

Safety evaluation is an important prerequisite and guarantee for the transportation of dangerous goods. Taking a dangerous goods transportation project in a town in southwest China as an example, the project area was divided into 8 evaluation units, and the safety check list method and fault tree method were used to evaluate the safety, and the main disaster control factors and safety work points were discussed. The results show that the safety checklist method is suitable for the inspection events specified in the specification provisions, and the fault tree method can effectively analyze the cause of the event and the weight of the elements through the minimum cut set and the importance calculation. The safety and security of transportation and loading and unloading operations should pay attention to the standardized operation of personnel, labor protection and safe location of the work area.

Citing the ‘Urban Catalyst Theory’, the design methods and strategies of industrial heritage renovation under the catalyst theory were discussed to inherit the history and culture, strengthen the interaction and integration with the surrounding environment, support was provided for the sustainable development of the city, and the development of the social, environmental and economic aspects of urban renewal was promoted. Through analyzing the case of High Line Park, the operation mechanism of urban catalyst theory in urban regeneration and its important role in promoting sustainable urban development is illustrated. New theoretical perspectives and practical strategies are provided for the field of urban renewal, and are of great theoretical significance and practical value in promoting sustainable urban development.

Digital economy has become a new economic form to create social wealth, and ESG (environmental, social and governance) as an enterprise evaluation standard highly consistent with the concept of sustainable development has also been widely concerned at home and abroad. In order to meet the needs of green high-quality development of enterprises under the new normal, the relevant data of listed companies of China’s Shanghai and Shenzhen A-share intelligent manufacturing equipment enterprises from 2009 to 2021was selected, and the impact and mechanism of digital level on enterprise ESG performance was verified through regression analysis. The empirical results show that the digital level of intelligent manufacturing equipment enterprises can significantly and positively affect the ESG performance of enterprises, and its impact path is to improve the quality of internal control and reduce financing constraints. The digital level of non-state-owned enterprises and non-heavily polluting enterprises has a stronger positive impact on ESG performance. From the perspective of enterprise digitalization, theoretical support is provided for improving the performance of ESG in Chinese enterprises and promoting the development path of ESG in China.

Under the interweaving of time change and humanistic concept change, traditional villages, as the carrier of a nation’s regional culture and historical memory accumulation, are an indispensable bridge for cultural inheritance. Taking the first batch of traditional villages in Jingxing County, Hebei Province as the research area, the evaluation index system of cultural landscape value of traditional villages was constructed from two dimensions of cultural landscape value and living development of cultural landscape, their cultural value was quantitatively evaluated by using the hierarchical analysis method (AHP) and the fuzzy comprehensive evaluation method (FCE), and four kinds of ways of exploring the differentiation and cultural revitalization of traditional villages were coagulated based on the IPA analysis method, such as emonstration type of living development, cultural landscape value of living heritage type, reconstruction type of cultural landscape value and cultural landscape enhancement type.

In order to analyze the impacts of differentcarbon allowance allocation rules of the government on independent remanufacturing, a game model between an original equipment manufacturer and an independent remanufacturer was established based on the grandfathering rule and the benchmarking rule. The impacts of the two different carbon allowance allocation rules on the optimal production decisions, profits, and the environment of the members of the closed-loop supply chain were compared. The results show that the lower sales of new products and the higher sales of remanufactured products under the grandfathering rule are more friendly to environmental protection while promoting the development of the remanufacturing industry. The original equipment manufacturer and the independent remanufacturer can realize a win-win profit in the grandfathering rule when the total carbon quota and baseline carbon quota meet specific requirements.

Taxation is the core element that guides and promotes the upgrading of industrial structure, industrial structure ecologisation is an important part of realising green development, and evaluating and optimising the effect of taxation is of great significance to realising green development. Based on the analysis of the influencing factors and the mechanism of industrial structure ecologisation, a theoretical framework model of industrial structure ecologisation was established, and based on the theoretical model, a two-way fixed-effect regression model, a panel threshold model, an intermediary effect model and other econometric models were constructed, and the effect of taxation on industrial structure ecologisation was empirically analyzed. Corresponding optimisation suggestions are put forward in terms of perfecting the tax system and optimising the innovation environment.

The tensile and shear properties of porous rock-like materials affect the safety and stability of engineering. In this paper, numerical models with different number of pores were constructed, and the numerical simulation of direct tensile and direct shear tests were carried out by the DEM to explore the influence of the pore number on the tensile and shear characteristics of materials. The results show that the tensile strength, the ratio of compressive strength to tensile strength, cohesion and internal friction angle decrease in different forms with the increase of the pore number. In addition, under tensile action, cracks are mainly formed along the horizontal direction and are not affected by the number of pores. Under shear action, cracks are mainly formed along a certain Angle with the horizontal direction. The increase of the pore number mainly leads to the decrease of the anisotropy of fracture occurrence under shear action.

Considering the cross sensitivity of strain and temperature in fiber Bragg grating measurement, two types of sensors based on fiber Bragg grating strain and temperature were developed. After removing wavelength drift caused by temperature, the individual changes in fiber Bragg grating strain can be obtained, which solves the problems of complex design structure and inability to compensate for temperature in traditional fiber Bragg grating sensors. The strain sensing capability and temperature sensing characteristics of the sensor were investigated through stress tensile testing and water bath testing. The experimental results show that the sensitivity coefficient of the fiber Bragg grating strain sensor is 0.95 pm/με, with a deviation of only 2.05% from the theoretical strain sensitivity coefficient; In the range of 20~60 ℃, the sensitivity of the temperature sensor reaches around 20pm/ ℃, which is 2.2 times higher than that of unpackaged bare fiber Bragg gratings. Compared with the sensitivity coefficient before temperature compensation, the coefficient after compensation is significantly improved, effectively achieving the goal of temperature compensation and providing a more reliable basis for strain monitoring in the field of civil engineering.