In order to investigate the visual load of drivers at the threshold zone of linear highway tunnels，five visual indicators of drivers were collected through the real vehicle test. A visual load evaluation model was developed by the Topsis improved factor analysis method，the visual load at different times and locations was analyzed，the evaluation criteria of driving comfort were proposed based on the constructed visual load curve，the generalization ability of the constructed load model was verified by using published data，and finally，the influence of visual indicators on visual load was investigated by sensitivity analysis. The results show that when the driver locates about -13 m to 55 m (12:00) and -10 m to 49 m (15:00) from the entrance，the visual load exceeds the boundary value (0.906)，indicating the driver's driving comfort and safety is extremely low. The visual load and closeness of the drivers near the entrance are much greater than those inside and outside the entrance，and the visual load and closeness at 18:00 are much lower than those at 12:00 and 15:00. The sensitivity parameters of the visual indicators are fixation duration，pupil area，fixation time，saccade range，saccade speed in descending order.

In order to explore the innovative work safety control model empowered by information technology and intelligent technology，this study analyzed the characteristics of information flow in the safety control process from a perspective of safety informatics，and proposed a multi-level edge intelligent management and control mode. Based on SI-SB system safety model，the principles of safety decision lag and deviation in the safety management and control process were analyzed，and the idea of improving the performance of safety management and control system was proposed. Combined with the characteristics of safety organization management systems and the advantages of digital technologies，the foundation of digital technologies in enabling information perception and transmission，safety information interpretation，and safety behavior guidance was analyzed. And the pathways of digital technology in enabling digital perception，intelligent decision-making and multi-level control were analyzed. On this basis，the multi-level edge intelligent management and control mode for work safety with intelligence，agility，flexibility，and unity was proposed. Finally，the performances of responding with safety events were calculated and compared before and after the application of the digital control mode in the three types of scenarios: emergency，short-cycle control and long-cycle control. The results show that the proposed multi-level edge intelligent management and control mode can significantly improve the effectiveness of safety control.

In order to explore the promotion path of civil aviation employees' willingness to share safety information，a multi-condition linkage model was constructed based on the theory of Person-Environment Fit，which presented the impact of individual characteristics and organizational environment on employees' willingness to share safety information. On the basis，model validation was carried out using fsQCA method based on 178 survey questionnaires. The results show that willingness to share safety information is not driven by a single condition，such as individual cognition level，job embeddedness，professional identity，leadership support，and safety culture，but rather the result of multiple conditions. There are three models for promoting higher levels of willingness to share safety information. The first is employee autonomy-driven model，which has as its core conditions high individual cognitive，high job embeddedness，and high professional identity. The second is the resonance-driven model，the core conditions of which are high individual cognitive，high professional identity，high support from leaders，and insufficient job embeddedness. The third is the leadership support-driven model，whose core conditions are high support from leaders and the absence of safety culture.

In order to explore the appropriate research object of safety science from a perspective of practice，based on the methods of logical analysis and deductive reasoning，six criteria were constructed to evaluate the research object of the discipline. And on the basis of analysing the presuppositions，advantages and disadvantages of 11 main views，it was argued that accident is the appropriate research object of safety science from the perspective of practice. The results show that the research object in practice should have the characteristics of uniqueness，clarity，generalization，comprehensiveness，maturity and deducibility. The main views can not meet these characteristics of the research object that should be met in practice. The proposal of a clear definition of accident solves the demand for the concept of general safety. The essential problem of safety science is accident prevention.

To adapt to the needs of public health emergency management and the changing talent requirements in the context of overall safety and emergency response，it is necessary to make appropriate adjustments to the public health emergency management talent development system. Firstly，the deficiencies and demands in cultivating public health emergency management talents were analysed. On this basis，the core elements in this training were clarified，including goals，types，modes，and curriculum development. Finally，the implementation path for cultivating these talents within the overall safety and emergency response was proposed. The results indicate the importance of updating educational concepts，implementing practical，experimental，and case-based teaching，integrating interdisciplinary training，enhancing collaborative and comprehensive skills，establishing a scientific evaluation system，and refining practical assessment methods to effectively enhance the construction of the public health emergency management talent development system.

In order to judge the stability of the surrounding rock in a tunnel under the blasting vibration and damage，the mechanics model was established according to the instability characteristics of the layered surrounding rock. Considering the blasting damage and vibration effect，the total potential energy equation and catastrophe instability criterion were established，and the stability evolution law of tunnel under blasting was analyzed. Taking Yaojia tunnel in Hunan of Shanghai-Kunming high-speed railway as an engineering background，the stability of the layered surrounding rock in the tunnel was analyzed. The results show that the necessary and sufficient condition for the catastrophe instability of layered surrounding rock in the tunnel satisfies the bifurcation equation，that is，when the mutation eigenvalue Δ≤0，the system may suffer catastrophe instability. The cumulative effect of blasting results in the continuous reduction of surrounding rock stiffness，and the increase of blasting charge aggravates the blasting vibration effect，both of which increase instability probability for stratified surrounding rock. The actual instability evaluation results are consistent with the construction site situation and monitoring results，which verifies the effectiveness of the instability criterion.

In order to explore the spontaneous combustion mechanism of high-voltage power cables under the effect of core heating when it was overloaded or short circuited，heating rods was used to simulate the internal heat source for experimental research. The influence of the power of the internal heat source and the cross-sectional area of the inner core of the cable on the key parameters of the spontaneous combustion characteristics，such as cable temperature rise and ignition time，were analyzed. It was found the whole process of cable from heating to ignition to combustion can be divided into four stages: initial heating，pyrolysis gas escaping，ignition，combustion and extinguishment. The results show that the dripping of insulating layer melt leads to the change of flame shape. The heating rate of the surface temperature of each structural layer of the cable increases with the increase of internal heat source power and the decrease of the distance to the surface of the internal heat source. The increase in the power weakens the influence of the cross-sectional area of the inner core of the cable on the heating rate of each layer. The ignition time of the cable is linearly decreasing with the power of the internal heat source.

Aiming at the problem of large deformation and failure of soft rock roadway in deep coal seam roof，taking the belt transport roadway in No.Wu2 mining area of No.3 horizontal plane in No.6 Mine of Pingdingshan Coal Group as the engineering background，the failure mechanism and control countermeasures of surrounding rock in intercalated coal seam roadway were studied. Firstly，the combined arch mechanical model of the original scheme of belt was constructed，and the stability discriminant of the straight wall semi-circular arch roadway was derived. Secondly，the joint repair technology of "anchor cable-beam-grouting-composite mortar anchor cable" was proposed，that was，the roadway was expanded along the roof of No.Wu8 coal seam，and the basic support of the roadway was completed by anchor cable and ladder beam. The deep and shallow hole grouting of surrounding rock was used for reinforcement support，and the composite mortar anchor cables were arranged at the key parts of the roof and the two sides to strengthen the roadway support. The distribution characteristics of stress and displacement field before and after roadway repair were analyzed by numerical simulation. Finally，the industrial test of the roadway was carried out. The monitoring results of mine pressure show that the maximum convergence of the two sides and the roof and floor are 93 mm and 112 mm respectively，and the deformation rate of the surrounding rock of the roadway is less than 1 mm/d in the later stage. The deformation has been effectively controlled and the repairing effect is good.

To explore the slipstream characteristics of 400 km/h high-speed trains passing through tunnels，a three-dimensional，unsteady，compressible and realizable k-ε turbulence model was used to perform numerical simulations to analyze the time evolution and spatial distributions of slipstream in tunnels. In addition，the flow field around the train was zoned according to the times when each part of the train reached and left the measuring point. Five characteristic parameters were used to measure the change of the slipstream speed in each area. The influence of different train formation lengths and tunnel lengths was discussed. The research results show that the change characteristics of slipstream in the tunnel are significantly affected by the train running position and pressure wave propagation. The slipstream peak increases with the increase of train formation length and speed，and the peak arrival time is delayed and advanced. The positive peak value of 8 formation is 68.75% higher than that of 3 formation，and the peak value at 400 km/h is 22.65% higher than that of 300 km/h. Under the same tunnel length，the maximum positive peak slipstream appears at the midpoint of the tunnel，and the fluctuations here are more intense and complex. The influence of pressure wave in the long tunnel on the peak slipstream speed is weakened. When the tunnel length reaches 3km，the positive peak slipstream drops by 30.70% compared with the length of 1km.