Scientific and Technological Achievement Evaluation Meeting by CSRME 

On 27 June, CSRME held a meeting for evaluating two scientific and technological achievements. 
Firstly, the scientific and technological achievement evaluation meeting was held on "Safety Construction Technology for Urban Super-large Underground Complex". It was designed to solve the crucial technical problem "How to build super-large underground complex safely in limited space in city center". Relying on the National Key Research and Development Program "Research on the Key Technology of Safe Construction of Urban Underground Large Spaces", "Urban Underground Space Network Safety Extension Construction Technology" and "Special Research on the Earthquake Resistance of Complex Underground Space Engineering", Theoretical analysis, numerical simulation, model test and field practice were carried out on the aspects of "integrated control based on security preposition, network security development and environmental quality construction". A series of innovative achievements were obtained, including 5 national invention patents, 7 software copyrights, 4 working methods, 5 standards, 3 monographs and more than 20 papers. The research results have been applied to the underground space development in Wuhan and Xiangyang, and the total economic benefits have exceeded 1.8 billion Yuan, and the remarkable social benefits have been achieved. The application project won the award of ten model projects in the first national underground space innovation competition, which has a strong guiding and reference significance for the construction of large hub in city center. The experts of the evaluation committee listened to the report of the project team and reviewed the relevant materials. After discussion and evaluation, the evaluation committee unanimously agreed that the research results of this project reached advanced level.

Scientific and technological achievements evaluation meeting was held on "Key Technologies for the Extension of Subway Stations Operating in Complex and Sensitive Environments". This project conducted in-depth research on the key technologies for the extension of subway stations operating in complex and sensitive environments, relying on Xuanwumen Metro Station of Beijing Metro. Through theoretical analysis, numerical simulation, model test and field test, etc., A series of innovative achievements have been made in the interaction mechanism between stratum and structure, micro-disturbance construction deformation control, 3D visualization real-time monitoring and early warning, etc. Two construction methods have been compiled, two standards have been published, two monographs have been published, 15 academic papers have been published, and 12 national utility model patents have been granted, and 5 software Copyrights have been authorized. The application of the innovation results has effectively improved the construction progress, ensured the construction safety, and achieved significant social and economic benefits. During the construction period, the monitoring indexes of the existing station and surrounding environment all meet the control requirements, and the operation is delivered 8 months and 9 days ahead of the contract period, which promotes the progress of the safe expansion technology of the subway station operating in complex and sensitive environment, and has broad prospects for promotion and application. After listening to the report of the project team and reviewing the relevant data, the experts of the evaluation committee agreed that the research results of the project reached the advanced level on the whole and reached the leading level in the research on the key technology of deformation control in micro-disturbance construction after discussion and evaluation. Secondly, the scientific and technological achievement evaluation meeting was hold on "Key Technologies for Subway Station Extension under Complex Sensitive Operation Environments". Based on in-depth study for Beijing Xuanwumen Subway Station through theoretical analysis, numerical simulation, model test, and on-site testing, this project achieved a series of innovative research results including the mechanism of interaction between surrounding rock and supporting structure, the perturbation method for construction deformation control, 3D visualization real-time monitoring and warning. 2 engineering construction methods, 2 standards, 2 published monographs, 15 published academic papers, 12 patents for utility models, and 5 software copyrights had been achieved. The application of innovation results effectively improved the construction schedule, guarantees construction safety, and produces significant social and economic benefits. It opened our eyes to a fact that all monitoring indicators of the existing station and surrounding environment during the extension engineering are in full compliance with control requirements, and completed 8 months and 9 days ahead of the scheduled date listed in the construction contract. It promoted the advancement of new technologies for subway station extension under complex sensitive operation environments, and had a wide range of applications. After hearing a report from the project team, reviewing the relevant information, discussing and evaluating, the experts of the evaluation committee agreed that the research results of this project achieved international advanced level, particularly in perturbation method for controlling construction deformation.