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Open AccessArticles
by Yulun Huang, Shengming Wang, Li Li
2023,5(1);
212 Views
Abstract
The new energy industry cluster is an important direction for the future development of China's new energy industry. At present, the scale of domestic research on new energy industrial clusters has been issued, but there are still some research directions that are not clear, and there are few research results on new energy industrial clusters using visual means. This paper analyzes the relevant research literature of the new energy industry cluster under the "double carbon" background from 2006 to February 2023 by visual atlas, and combs the research hotspots and evolution trends. The research shows that: (1) domestic research on the new energy industry began in 2006, and then the number of papers proposed under the "double carbon" background increased sharply; (2) The research progress of new energy industry cluster shows the trend of refining the focus; (3) Under the background of "double carbon", the research on new energy industry cluster is still in the initial stage of development, and the indicator system needs to be improved. It is expected to enrich the perspective of the review of new energy industrial clusters and provide some reference for the research and design practice of new energy industrial clusters under the background of "double carbon" in China in the future.
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Open AccessArticles
by Guangnan Li
2023,5(1);
195 Views
Abstract
China's carbon emissions are systematic and complex, which affects the effectiveness of carbon emission reduction. Therefore, by combing relevant literature, this paper analyzes the mechanism of two-way FDI affecting carbon emissions in China, in order to explore a new path of emission reduction and provide reference suggestions for realizing China's "dual carbon goal".
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Open AccessArticles
by Linan Ye
2023,5(1);
253 Views
Abstract
"Ensuring clean drinking water" is a major challenge facing mankind in this century.The world's population base is large, the total population is growing, the water pollution is becoming more and more serious, and it is more and more difficult to remove. At the same time, due to climate change, many places have appeared the phenomenon of "shortage of fresh water resources", so the recycling and reuse of sewage to turn it into drinking water has become an urgent problem in contemporary society.However, the existing sewage treatment technology can not achieve the expected water purification effect. The emergence of nanotechnology provides an opportunity to develop a new generation of sewage treatment technology, indicating the direction of research and development of a new generation of water purifier.
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Open AccessArticles
by Ming Zhong
2023,5(1);
225 Views
Abstract
With the growth of traffic demand, there are more and more tunnel construction projects. The technology and quality of tunnel inspection are directly related to the reliability of the tunnel project, and accurate determination of geological conditions is of great significance to construction safety and construction progress estimation during the development of tunnel engineering. It is of great significance to design tunnels in areas with high and steep mountains, rock formations, vertical and horizontal gullies, topography and landforms, which are often difficult to construct, with high technical standards and complex geological structures. Therefore, a reasonable exploration method is necessary. This paper focuses on the characteristics and main contents of geological exploration methods, and reveals the specific application of various methods in geological exploration in the process of tunnel exploration, hoping to provide some references for tunnel construction and exploration.
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Open AccessArticles
by Yang Wang
2023,5(1);
219 Views
Abstract
Tunnel construction, especially in the case of harsh geological conditions, will suffer from many geological disasters such as cement flow and fault collapse in karst areas. Geological forecasting techniques can provide a better understanding of geological conditions so that preventive measures can be taken. This paper introduces the early geological prediction technology widely used in highway tunnels, and discusses the principles, advantages and disadvantages and applicable conditions of various methods.
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Open AccessArticles
by Zhifa Zeng
2023,5(1);
214 Views
Abstract
In the context of the continuous enhancement of social economy and scientific and technological development in my country, the scale of highway construction continues to expand. Among them, tunnels have the advantages of shortening highway mileage, optimizing linearity, and providing safety factors. The importance of tunnel construction in national highway construction is increasing day by day. In order to ensure the safety of tunnel construction and save construction costs, it is very important to do a good job of tunnel geological survey. As an important means of tunnel investigation, geophysical exploration is becoming more and more important and important in the investigation. In order to improve the accuracy of the survey level, it is necessary to take the reasonable application of the comprehensive survey method. Therefore, it is of great research and application value to carry out research on the application of comprehensive geophysical methods in the exploration stage to provide a scientific basis for subsequent tunnel construction.
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Open AccessArticles
by Yuanhui Cao, Jiajie Wang, Wenhao Yu, Moran Li, Zihan Lyu
2023,5(1);
191 Views
Abstract
China's Seyhanba forest has recovered from the desert and is now an environmentally friendly green farm with stable sand control function. Therefore, it is important to study the ecological environment before and after the ecological restoration of Seyhanba for ecological restoration and environmental protection. In this paper, an environmental model of the Seyhanba is developed and can be extended to other provinces.
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Open AccessArticles
by Rui Chen, Zhiqiang Zhou, Qian Xu, Xu Xin, Fengyun Ma
2023,5(1);
209 Views
Abstract
We examine the surface fuels of 11 main stands in Shandong Province, measured their combustion indexes such as load, moisture content, ignition point and calorific value. The results showed that the ignition point of surface litter layer calorific value of surface humus layer in the same stand. The lowest ignition point of litter layer in Pinus tabulaeformis forest was 265.67℃ and the highest calorific value was 21911.78 J/g. Among different forest stands, Pinus tabulaeformis forest has the strongest surface fuel combustion, while poplar forest has the weakest surface fuel combustion.
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Open AccessArticles
by Yuwen Fei
2023,5(1);
189 Views
Abstract
The continuous expansion of urban impervious surfaces has brought negative impacts on the urban environment. In order to quickly extract urban impervious surfaces to monitor urban development, this paper proposes a multiresolution segmentation-based impervious surface extraction method. The method is an improvement on the deep support vector data description method. The study is carried out to validate the method using some areas of Shenzhen as the experimental area. The experimental results show that the improved DSVDD method has enhanced all accuracy indicators, while its landscape pattern index reflects that the improved model has less fragmentation.
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Open AccessArticles
by Yi Le
2023,5(1);
205 Views
Abstract
Bike sharing always been regarded as one of green transportation to reduce carbon emissions all over the world. It was a sustainable development method supported by governments. While the emergence of bike sharing provides convenient transportation for humans, the current situation of bike sharing is facing several challenges in our cities. Intensive carbon emissions might be produced from continuous production of sharing bikes under the oversupply problem which has a negative effect on the urban environment. This literature review proposed to reconsider the relationship between bike sharing system and carbon emissions to recognize the real meaning of bike sharing. The article overviews the development of bike sharing system, summarize from the history of bike sharing and design the measurement of bike sharing system with study cases in recent years. Collecting carbon emissions computational formula calculates life cycle carbon dioxide emissions of bike sharing to evaluate energy consumption. However, some studies remain narrow in focus dealing with the design method of bike sharing system or carbon emissions estimate. These findings signal the need for additional studies to investigate more about the adverse impact of bike sharing and try to keep the balance supply with demand to protect our cities’ environment.
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Open AccessArticles
by Yulin Liu
2023,5(1);
238 Views
Abstract
Based on the analysis of various data over the years, this paper analyzes whether the increase of warm season will affect the fire frequency, intensity and fire season length. Combined with the specific situation and data of mountain wildfires in California in the past decade, the causes of wildfires in California are obtained, that is, climate change plays an important role in forest fires. And greenhouse gas emissions significantly affect the fuel dryness (CWD) and fuel availability (AET) in mountain forests from two aspects of reducing rainfall and increasing temperature, thereby increasing the probability of mountain fires. After that, through the analysis of other human factors, the indispensable influence of human activities on wildfires was confirmed.
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Open AccessArticles
by Huanwen Pan, Aiqiao Qu, Chixiang Ma, Tieliang Lu, Siqi Hao
2023,5(1);
245 Views
Abstract
In view of the local surface cracks and collapse in the collapse area of an open-pit underground iron mine, considering the safety and thoroughness of the goaf treatment, the scheme adopts the caving surrounding rock method to control the goaf area, and the implementation of this plan eliminates the high and steep slopes to form stable steps, effectively treats the goaf area while fully recovering mineral resources, and provides a guarantee for the sustainable development of the mine.
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Open AccessArticles
by Ziyang Wang, Na Li, Yuebo Han, Kun Huang
2023,5(1);
188 Views
Abstract
Based on digital mining technology, this paper uses computer simulation as a means to realise a three-dimensional geological database and geological model creation, and to establish a three-dimensional underground mining system visualisation model. According to an underground mine mining system, research is carried out for the mining method and the realization way, and the design scheme and design parameters are proposed. The analysis of the mine geological data allows for a comprehensive digital integration and visualisation of the surface, the ore body and the pioneering system. It supports the operation of various software or systems related to mining design, research and production, and provides support for the construction of virtual mines.
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Open AccessArticles
by Yuhan Wei, Guofeng Dang
2023,5(1);
211 Views
Abstract
Research on ecological sensitivity shares an important role in carrying out regional ecological civilization construction and advocating regional ecological sustainable development. In this paper where Gannan Tibetan Autonomous Prefecture is taken as an example, nine factors are selected from two aspects of the ecosystem and social system and the time-space changes of ecological sensitivity in Gannan Tibetan Autonomous Prefecture from 2000 to 2020 are analyzed by using the coefficient of variation method and cumulative model with the support of GIS. As demonstrated by the results, (1) the research area as a whole proves to be moderate in ecological sensitivity. By 2020, highly and extremely sensitive areas in the research area had decreased by 4435.68 km2 while those insensitive and mildly sensitive areas increased by 213.1 km2. The areas with high ecological sensitivity are mainly distributed in Xiahe County in the north of the research area, as well as in the north of Hezuo City and Zhuoni County, and the areas with low ecological sensitivity are mainly located in Diebu County and Zhouqu County in the southeast of the research area. (2) The ecological sensitivity of Gannan Tibetan Autonomous Prefecture has been fluctuating in the past 20 years, and the fluctuation enhancement area is mainly distributed in the southern part of Xiahe County and the central part of Zhuoni County, accounting for 25.86% of the total area of the research area. All these analyses and conclusions can provide a basic scientific basis for ecological protection in Gannan Tibetan Autonomous Prefecture.
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Open AccessArticles
by Jiaqi Zhang
2023,5(1);
226 Views
Abstract
Under the background that offshore oil and gas exploration projects are increasingly being valued by all countries, it is more and more important to reduce the probability of oil spill accidents on oil production platforms. To this end, the author analyzed the causes of platform oil spill from four aspects: platform characteristics, well control failure, natural environment, storage and transportation structure damage, and obtaind the main influencing factors of platform oil spill. And on this basis, the author put forward some immature suggestions for the platform from design, construction and installation to operation.Finally, hoping that in the future, on the basis of the combination of informational technology and oil spill prevention and control, the losses caused by oil spill can be greatly minimized.
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Open AccessArticles
by Yuming Zhang, Mingwei Li, Nan Zhang
2023,5(1);
229 Views
Abstract
Granger causality theory is widely used in data-driven analysis. In multivariable systems, unique, redundant, synergistic and mixed information structures may lead to distorted or complex causality. Based on mutual information and Granger causality theory, this paper decomposed multivariate information structure, and proposed Average Granger causality index and mixed relation index to reduce the data dimension and computational complexity. The experiments examine the causality of air pollutants in Beijing and its surrounding cities, and the results show that the method is feasible.
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