In order to study the deformation of high fill in the Dalin Railway Station, a typical cross-section was selected. Four rows of settlement plates and slope observation piles were buried in the high fill, and flexible displacement meters were installed on the geogrid at the foot of the slope. After more than two years of observation, it was found that after more than half a year of construction and filling, as well as more than 12 months of standing after completion, the settlement of the high fill tended to stabilize. The maximum percentage of settlement during the filling period to the total settlement is 69.05%. The test results of the observation piles on the left and right slopes show that the high fill slope is also stable, and the maximum proportion of settlement during the filling period is 99.77% of the total settlement. After the filling is completed, the deformation of the geogrid is basically stable, indicating that the slope is also stable. It is recommended to carry out subsequent construction 12 months after the completion of filling.

Consolidation plugging is an effective means to control drilling fluid leakage in oil and gas wells. Revealing the migration law of plugging slurry in wellbore-fracture and constructing continuous solidified body is one of the key problems to be solved in this technology. Therefore, the CFD numerical simulation method is adopted. A numerical model of vertical fracture consolidation plugging with dynamic change of wellbore pressure is established. The effects of density, plastic viscosity, yield stress, displacement and fracture opening of Bingham flow plugging slurry on the migration of plugging slurry were analyzed. The research shows that during the grouting process, the low-density plugging slurry preferentially enters the upper part of the vertical crack. The high-density plugging slurry preferentially enters the middle of the vertical fracture, and there is obvious mixing phenomenon. The plugging slurry migrates faster in the horizontal direction than in the vertical direction in the fracture. The plugging slurry with low viscosity is easier to enter the fracture. The higher the viscosity is, the longer the time for the plugging slurry to reach the same volume ratio at the fracture outlet is. The higher the volume ratio is, the lower the efficiency of plugging slurry replacing drilling fluid is. The effect of yield stress on the migration of plugging slurry in wellbore-fracture is not significant. The smaller the displacement or the larger the crack opening, the faster the instantaneous flow rate of the plugging slurry at the crack outlet increases, the larger the volume of the plugging slurry entering the deep part of the formation, and the smaller the volume of the plugging slurry required to reach the same volume ratio at the crack outlet. The results of numerical simulation have certain theoretical guiding significance for the formulation of curing plugging scheme.

Taking national laboratories, research centers of universities and enterprise research from four typical countries in Europe, America and Asia-Pacific region as the research objects. Through in-depth analysis of their industry distribution and regional layout, their successful experiences and innovative models were summarized. It is found that the success of foreign scie.jpgic research institutions largely benefits from clear national strategic guidance, industry-university-research’s closely integrated ecosystem, flexible and efficient resource allocation mechanisms, as well as careful planning and policy support for innovative regions. At the same time, foreign scie.jpgic research institutions attach great importance to cross industry cooperation, form industrial chain synergies, and rely on regional characteristic resources to create industrial clusters with global competitiveness. Based on the above analysis, a series of inspirations and suggestions for the industry layout and regional development strategy of scie.jpgic research institutions in China have been proposed, emphasizing the need to strengthen top-level design, balance the regional layout of scie.jpgic research institutions, carry out technology research and development that adapts to regional innovation and development, and fully guarantee the autonomy of scie.jpgic research institutions, support and lead China’s scie.jpgic and technological innovation and high-quality economic and social development.

Aiming at the current carbon emission problem in the construction industry, a new type of high sound insulation assembled partition wall system is proposed. The system aims to respond to the national energy conservation and carbon reduction policy, improve construction efficiency, reduce costs, and reduce the generation of construction waste by optimizing the internal wall system. The research method the combination of experiment and simulation were adopted to verify the comprehensive performance of the system through laboratory test and field application. System design and material selection were explored, sound insulation performance test were conducted, and comparative analysis with traditional masonry and finished wall panels were carried out, which aims to promote the green and low-carbon transformation of the construction industry, and provide technical support for the sustainability of the economic structure.

In order to realize the prediction of safety risks for working in electric confined spaces, considering four risk sources including personnel, tools, environment,and management,the safety risk weight of different sources was calculated using analytic hierarchy process, meanwhile the actual safety conditions of risk sources were judged by subjective evaluation. Based on that, the final operating condition risk assessment method score was obtained by adjusting the initial LEC score. In particular, for environmental risk, the method assessed coupling risks from multiply kinds of toxic and harmful gases. A case study in electric confined spaces shows that the method is highly operable, presenting accurately quantitative evaluation on work risk level.

In order to unify the standard system of smart airport construction and evaluate the development level of smart airport,the evaluation model of smart airport development level based on game combination empowerment-cloud object element is proposed, which will avoid the bias in the process of empowerment and is used to solve the problem of ambiguity and randomness in the evaluation indexes. The model was applied to an airport in Guangdong Province to evaluate the development level of smart airports, and the results show that the evaluation results of the indicators of the development level of smart airports derived from the model are basically consistent with the results of the field visit research and the actual situation, and the evaluation model has the practicability and validity, and it can provide a new way of thinking for the evaluation of the development level of smart airports.

Data trading is an important form of data elements circulation. By constructing an evolutionary game model of “data trading platform - data providers - data demanders,” it is revealed that the data trading market exists in three equilibrium states: non-cooperation, inefficiency, and ideal. A higher initial willingness for technological innovation by the platform, a reasonable profit distribution coefficient, and a lower loss of competitive advantage can promote the system to evolve towards an ideal equilibrium state; whereas high data prices and technological innovation costs can lead the system into a state of non-cooperation or inefficiency. Therefore, the development of the data trading market can be promoted by enhancing the awareness of the subjects, establishing a fair and reasonable profit distribution mechanism and data product pricing, and supporting technological innovation in the platform.

As a kind of self-supporting supporting structure, lattice diaphragm wall is used in soft soil areas such as ports, wharfs and shipyards in the past, but it is rarely used in complex hard rock strata. Taking Laiwushan slope support project in Longhua District of Shenzhen as an example, the construction site preparation, solitary stone treatment, rock entry process, steel cage hoisting, cross steel plate joint treatment and other key processes were discussed, which provide a reference for the construction of similar projects.

How leaders reduce employees’ sense of work alienation in uncertain environments is a hot topic of academic concern. Taking 494 employees as a sample and using a two-stage questionnaire, from the perspective of social exchange theory, the effect of leader perfectionism on employees’ work alienation, as well as the intermediary mechanism and boundary conditions between superior-subordinate relationship and emotional exhaustion in the relationship between the two were explored. The results show that leader perfectionism has a significant positive effect on employees’ sense of job detachment. Supervisory and subordinate relationships play a partial mediating role between leader perfectionism and job detachment. Emotional exhaustion positively moderates the effect of leader perfectionism on superior-subordinate relationships.

With the global awareness of energy conservation, emission reduction and environmental protection, green building has become the development trend of the future construction industry. As an integrated design management tool, BIM(building information modeling) technology provides strong technical support for green building design. Based on this background, the application capability of BIM technology in the field of green building design and its impact on improving the sustainability of green building design were explored.The BIM application ability evaluation index system was established, then entropy weight method was adopted to assign weight, and fuzzy comprehensive evaluation method was used to evaluate the BIM application ability of a green building design team. Specific suggestions are put forward.