Recently, Shandong Hi-Speed Construction Management Group and the China Highway & Transportation Society organized and convened an evaluation meeting for the science and technology project "Key Technologies for Intelligent Drilling and Blasting in Highway Tunnel Construction," undertaken by Linteng Company.

The meeting heard the technical report of the research group, reviewed relevant materials, and, after questioning and deliberation, formed evaluation opinions. The expert panel considered that the materials submitted by the research group were complete and the content comprehensive; the project achieved its own distinctive features and technical innovations in areas such as intelligent classification of tunnel surrounding rock, intelligent blasting design, mechanized upgrading of key processes, and intelligent perception and control of construction status. The research results overall reached the international advanced level, and in the area of intelligent collection technology for geological information at the tunnel face, reached the international leading level.

Through theoretical analysis, numerical simulation, laboratory tests, equipment development, and engineering verification, the project "Key Technologies for Intelligent Drilling and Blasting in Highway Tunnel Construction" conducted in-depth and systematic research on key technologies for intelligent drilling and blasting in highway tunnel construction: First, it developed portable geological logging equipment and an intelligent tunnel survey and measurement robot, proposed an intelligent interpretation method for structural planes, established an image sample library of joints and fissures at the tunnel face, and solved the challenge of intelligent collection of tunnel geological information; second, it proposed a dynamic design algorithm for tunnel blasting and developed an intelligent blasting software system suitable for mounting on rock drilling jumbos, enabling efficient and intelligent drilling and blasting construction in highway tunnels; third, it constructed a digital twin model based on intelligent perception of tunnel construction, established mechanized construction control standards for highway tunnels, and developed an intelligent construction scheduling system, improving the intelligence level of construction control. The results were successfully applied in the construction of the Fangshan Tunnel on the Linteng Expressway, strongly advancing highway tunnel construction toward full-process intelligence and a systematic series.