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Electronic Detonator Initiation Technology: Research Progress and Development Strategies

Leng Zhendong , Fan Yong , Tu Shufang , Zhou Guisong , Guo Yiming

Strategic Study of Chinese Academy of Engineering doi: 10.15302/J-SSCAE-2023.07.001

Abstract:

Electronic detonators not only improve delay accuracy and the flexibility of initiation network design, but also realize the
full lifecycle safety control of detonators from production to transportation, storage, and blasting operation. Therefore, electronic detonators are the key development direction of the civil explosive industry. This study summarized the development status of the electronic detonator initiation technology from the aspects of electronic detonators’ structure, application scenarios, intelligent level,blasting design theory, and failure mechanism. Our study indicates that electronic detonators will develop toward serialization and standardization, the electronic detonator initiation technology will develop toward more intelligence, the electronic detonator delay design theory will develop toward short delay, and the electronic detonator initiation network will develop toward a large scale. Based on engineering practices, we summarized the technological and application problems of electronic detonators, including frequent occurrence of misfire detonation, disconnection between detonation research and application, limited product types, and a defective standards system. Considering the demand of the civil explosive industry, we proposed the following key research directions: theories of precise delay-controlled blasting, integration of information technology with electronic detonator initiation, series of differentiated electronic detonator products, and standards systems of electronic detonators.

Keywords: electronic detonator     initiation technology     delay timing     design theory     standard system    

Optimization of Organizational Model of Public Food Safety Emergency Management in China

Peng Sixi, Zhang Rixin

Strategic Study of Chinese Academy of Engineering doi: 10.15302/J-SSCAE-2022.06.009

Abstract:

This study aims to explore approaches to integrating multiple stakeholders to participate jointly in public food safety
emergency management. We analyzed the evolution and characteristics of organizational models of public food safety emergency management in China and revealed the organizational crux thereof, that is, the deficient bureaucratic model caused by fragmented management. This causes an internal bureaucratic dilemma for government supervision and triggers organizational problems in terms of environmental adaptability, plan operability, information transmission, multi-sector governance, and policy dependence of decision-making and execution. Furthermore, we proposed a three-system-integrated organizational mode and analyzed its operation mechanism from the aspects of organizational structure as well as planning, information, decision-making, and support mechanisms. The three-system-integrated model is the evolution direction for China's public food safety emergency management and will play an active role in encouraging the effective participation of diverse social subjects in social co-governance of food safety risks.

Keywords: public food safety     emergency management     organization system     integration of three systems    

Construction of Green-Hydrogen Supply System in China: Reflections and Suggestions

Du Zhongming , Zheng Jinyang , Dai Jianfeng , Shi Jianfeng , Hua Zhengli , Li Bo,Zhang Tongfeng , Hou Mengjing

Strategic Study of Chinese Academy of Engineering doi: 10.15302/J-SSCAE-2022.06.005

Abstract:

Under the guidance of the carbon neutrality goal, energy production and consumption modes of China are shifting to be green and low-carbon, and the hydrogen energy supply system will be reshaped based on green hydrogen. Green hydrogen will become an important component of China’s new energy supply and consumption system. Strengthening the construction of a green-hydrogen supply system is conducive to the transformation of China’s energy production and consumption modes. This study explored the significant values for constructing the green-hydrogen supply system and analyzed the challenges faced by the construction, including (1) spatial mismatch between green hydrogen supply and demand, (2) temporal mismatch between green hydrogen production and consumption, and (3) mismatch between the green-hydrogen supply system and existing systems, mechanisms, and standards. To support the construction of the green-hydrogen supply system, key research directions include key basic issues of hydrogen storage and transportation, hydrogen storage and transportation technologies and equipment, and safety testing technologies of hydrogen storage and transportation equipment, thereby realizing the high-quality development of hydrogen storage and transportation. Moreover, the study proposed the integrated development of hydrogen energy and electrical power to construct the green-hydrogen supply system of China. Hydrogen storage and transportation is a key link that connects water-electrolytic hydrogen production and hydrogen consumption and is crucial for adjusting the spatial and temporal mismatch of green hydrogen supply and demand and for realizing flexible supply of green hydrogen. Therefore, we suggest that China should focus on top-level design and overall planning, improve infrastructures to address the spatial and temporal mismatches, conduct pilot demonstration to drive technological innovation, and improve the systems and mechanisms to optimize the development environment.

Keywords: green hydrogen     hydrogen energy supply system     hydrogen storage and transportation     hydrogen energy and electrical power system integration    

Countermeasures for the Development of China’s Food Nutrition and Health Industry in the Context of Dual Circulation

Liu Zelong, Li Jian,Wang Jing, Sun Baoguo

Strategic Study of Chinese Academy of Engineering doi: 10.15302/J-SSCAE-2022.06.007

Abstract:

The food nutrition and health industry is an important component of the Healthy China strategy in the context of dual circulation. This study summarized the development trend of the industry and analyzed the challenges faced by the industry under the new circumstance. According to the overall strategic layout and planning of China, breakthrough paths were proposed, including establishing a food technology system based on Chinese resident health information in the context of domestic circulation, promoting domestic and international circulation through industrial diversification, and improving global influence of the industry by exploiting both the domestic and international markets and resources. Furthermore, we proposed several suggestions. China should focus on the input of innovative resources in the food nutrition and health field to prompt high-quality achievements; strength policy support and guidance to promote the international competitiveness of enterprises; improve the industry-university-research collaboration system to promote the transformation of achievements; strengthen talent training to provide professional support; optimize the industry supervision system to create a healthy market environment; and promote education and publicity regarding food nutrition and health to improve citizens’ health literacy.

Keywords: food nutrition and health     industrial development     dual circulation     industrial diversification    

Ultra-Precision Machining Technology and Equipment for High-End Optical Elements

Jiang Zhuangde, Li Changsheng , Sun Lin, Duan Duanzhi, Kang Chengwei ,Chen Shanshan, Lin Qijing, Yang Shuming

Strategic Study of Chinese Academy of Engineering doi: 10.15302/J-SSCAE-2023.07.003

Abstract:

High-end optical elements determine the performance of high-end equipment. Researching the ultra-precision machining technology and equipment for high-end optical elements is crucial for strengthening China's manufacturing industry and satisfying the requirements of the high-end equipment industry. In this study, the ultra-precision machining methods and equipment for optical elements, high-performance basic components, and measurement methods and equipment used in ultra-precision optical machining are analyzed. Five development trends are summarized including extremalization of precision and size, integration of shape and performance, compounding of machining technologies, integration of machining and measurement, and intellectualization of equipment and processes. Through extensive survey and discussions, a technology roadmap for ultra-precision manufacturing of high-end optical elements by 2035 is proposed from the aspects of demand, goals, products, key technologies, application demonstrations, and guarantees. Furthermore, several development suggestions are proposed, including (1) optimizing the innovation system and establishing technical alliances by organizing superior resources, (2) increasing resource guarantees and laying out plans on basic and technical research,(3) strengthening talent cultivation to expand the scale of the multi-level talent team, and (4) building a solid foundation for industrial development and cultivating small-sized leading enterprises.

Keywords: optical element     precision manufacturing     ultra-precision machine tool     ultra-precision machining     optical fabrication    

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Electronic Detonator Initiation Technology: Research Progress and Development Strategies

Leng Zhendong , Fan Yong , Tu Shufang , Zhou Guisong , Guo Yiming

Journal Article

Optimization of Organizational Model of Public Food Safety Emergency Management in China

Peng Sixi, Zhang Rixin

Journal Article

Construction of Green-Hydrogen Supply System in China: Reflections and Suggestions

Du Zhongming , Zheng Jinyang , Dai Jianfeng , Shi Jianfeng , Hua Zhengli , Li Bo,Zhang Tongfeng , Hou Mengjing

Journal Article

Countermeasures for the Development of China’s Food Nutrition and Health Industry in the Context of Dual Circulation

Liu Zelong, Li Jian,Wang Jing, Sun Baoguo

Journal Article

Ultra-Precision Machining Technology and Equipment for High-End Optical Elements

Jiang Zhuangde, Li Changsheng , Sun Lin, Duan Duanzhi, Kang Chengwei ,Chen Shanshan, Lin Qijing, Yang Shuming

Journal Article