2023-04-20

On the afternoon of April 19th, the first quarter work promotion meeting was held for the national key research and development plan project "Theory and Method of Intelligent Operation and Maintenance of Building and Municipal Public Facilities", subject II, "Rapid Holographic Sensing and multi-source heterogeneous data Fusion of Intelligent operation and Maintenance of building and Municipal Public Facilities" (2022YFC3801102), which I was responsible for.

At the meeting, The teams responsible for each topic reported their research progress on tasks such as "holographic intelligent acquisition and multi-dimensional real-time perception method of multi-source operation and maintenance data", "Distributed edge computing system and network architecture oriented to multi-source operation and maintenance data", "Fusion model and management Method oriented to multi-source heterogeneous operation and maintenance data", and "R&D and application of operation and maintenance Data acquisition and fusion system of building and municipal public facilities" After detailed and thorough discussion, the project index of the first stage and the task of the next stage are further clarified. Zhang Lianzhen, the project leader, made a summary speech and fully affirmed the progress of the whole work of the second topic.

2023-04-19

Standard for the application of operation and maintenance management with hospital building information modeling (T/CECS 1096-2022) (hereinafter referred to as "Standard"), which I participated in compiling, has been officially issued by China Association for Engineering Construction Standardization and will come into force on November 1, 2022.

This standard compilation group after in-depth investigation, careful summary of practical experience, reference to domestic and foreign advanced standards, and on the basis of extensive solicitation of opinions. It is divided into 10 chapters and 3 appendices. The main contents include: general principles, terms, basic provisions, operation and maintenance model, operation and maintenance data interoperability and storage, room operation and maintenance management, construction equipment operation and maintenance management, special hospital equipment operation and maintenance management, building energy consumption management, security, fire and emergency management, etc.

2023-04-17

The National Science Review (NSR) has published the top 10 most-watched papers online in 2021, as of March 31, 2023.

Among them, the research group's paper "Discharge of treated Fukushima nuclear accident contaminated water: macroscopic and microscopic simulations" came in second at Altmatric with a score of 143. See link for details.

The Altmetric Score is a measure of how widely and deeply scientific research has reached the public. The Altmetric Score of a paper is weighted by the number of times the paper has been reported by news and blogs, the number of times it has been exposed by social networks, the number of citations on Wikipedia, and the number of peer reviews after the paper was published. The media channel with the highest score weight is news and blogs.

2023-03-30

Analysis and Mining of Real-time Monitoring Data from Shield Machines has been included in the journal Tunnel Construction.

A shield is a machine that uses a shield to resist the surrounding earth pressure and then excavates under the shield. On the one hand, monitoring parameters such as propulsion speed, total thrust and cutter head speed reflect the working state of the shield. Based on appropriate monitoring parameters, the shield will record a large number of process data during tunneling. On the other hand, the excavation process of the shield also needs a lot of geological and geographic information as support to evaluate the working state of the shield. How to use these parameters, data and complex geological and geographic information to evaluate or predict the performance of shield is one of the important problems in the field of shield.

Firstly, data analysis and mining techniques are used to preprocess the monitoring data. Then, with the help of association rule analysis method and improved Apriori algorithm, the relationship among more than ten parameters in shield construction is analyzed and mined, and the typical association results are explained, which verify the mastered laws, correct misunderstanding and discover the potential unknown laws. Finally, based on classification and regression tree algorithm, the real-time prediction of the stratum where the shield machine is located is made, and a threedimensional geological model is built to interpret and apply the prediction results. The results show that the classification model can reflect the stratum information more truly and can be used as an effective supplement to the geological survey results. The feasibility and rationality of analyzing and mining the monitoring data of shield machine is verified by Guangzhou metro section.

Note: "Tunnel Construction" is a highly practical technical journal in the field of tunnel and underground engineering, and the core journal of Peking University.

2023-03-24

On March 22, at the invitation of the National Marine Environmental Forecasting Center, attended the "Expert Consultation and Demonstration Meeting on the Simulation and Assessment of the Diffusion Path of the Fukushima Nuclear Contaminated Water in Japan".

During the meeting, the research group's study on the diffusion simulation of Fukushima contaminated water was reported from four aspects, including the event background, simulation methods, simulation results and problem discussion, and the in-depth discussion included the simulation animation of the main radioactive element tritium in Fukushima contaminated water and the analysis of the diffusion path, the countermeasures to the discharge plan and the related propositions of Tokyo Electric Power Company. The discharge of nuclear-contaminated water is not only an internal matter of TEPCO and the Japanese government. Its consequences may affect the Marine environment and ecology of the Pacific Ocean and therefore require the attention of Pacific Rim countries and international institutions.

The meeting also involved experts from the International Atomic Energy Agency, the Ministry of Natural Resources, the Chinese Academy of Sciences and Guangxi University.