What is the new technology of tunnel excavation? New technologies in tunnel excavation are revolutionizing the field, improving speed, safety, and efficiency. The following are some of the latest technologies for tunneling:

　　1. Three-dimensional visualization technology for shield tunneling :

　　- Through advanced 3D modeling technology, the entire process of tunneling with a shield machine is presented in a three-dimensional way. In traditional tunnel construction, people often can only rely on drawings and models to imagine the shape and structure of the tunnel. However, this technology can accurately simulate and present every link of tunnel construction in a three-dimensional way. From the start and excavation of the shield machine to the formation of the tunnel, every detail can be clearly displayed. This makes the tunnel construction process more transparent and provides a more accurate basis for decision-making.

　　- This technology can also be used to predict and prevent various risks in the tunnel construction process in advance to ensure construction safety. It can also be used to optimize the design of the tunnel structure according to three-dimensional visualization data to improve the bearing capacity and service life of the tunnel. It also has broad application prospects in tunnel maintenance, disaster warning and other fields.

　　2. New slurry reinforcement excavation technology :

　　- A research team from Ocean University of China has developed a technology suitable for tunneling in coral sand. By injecting a slurry mixed with fine cement particles into the ground through a vertical pipe, under high pressure, this mixture fills the gaps between coral sand grains. After the cement solidifies, a hard underground matrix is formed. This artificial matrix can safely excavate tunnels without problems such as seawater infiltration or ground collapse. This technology overcomes the difficulties of tunneling under special geological conditions and has broad application prospects, such as in similar projects in marine engineering.

　　3. Intelligent tunnel boring equipment :

　　- Taking the intelligent double folding boom rock drilling jumbo as an example, this is an advanced excavation equipment in China's railway construction. It has the characteristics of flexibility and low operation difficulty. Operators can effectively observe the blasting drilling situation through electronic control technology, using remote monitoring programs, GPS positioning, drilling depth detection, water pump flow and pressure monitoring and other functions, improve the blasting quality and ensure the safety of tunnel construction. And during the operation process, there is less dust and low noise, which can better protect the health of construction personnel.

　　4. Multi-hole combined excavation technology :

　　- In the excavation of some extra-long tunnels, a combined excavation scheme of main tunnels and auxiliary tunnels is adopted. For example, in the excavation project of the West Tianshan extra-long tunnel, the parallel heading tunnel is constructed by using a TBM boring machine to assist the drilling and blasting construction method of two main tunnels, realizing "long tunnels dug short and short tunnels dug quickly", improving the excavation efficiency of tunnels and shortening the construction time. This multi-hole combined construction method can give full play to the advantages of different excavation methods and equipment and deal with complex geological conditions and engineering requirements.

　　5. Innovative technology of tunnel boring machines :

　　- Tunnel boring machines continue to make breakthroughs in cutter head design, propulsion systems, intelligent control systems and other aspects. For example, some new boring machines have added functions such as advanced geological prediction systems, CFC advanced water detection systems, advanced detection drilling rigs, and SHP rock burst detection systems for adverse geological conditions. They can predict excavation risks in advance and provide sufficient early warning and preparation measures for construction personnel.

　　- The degree of intelligence and automation of boring machines is constantly improving, and they can realize functions such as remote monitoring, fault warning and intelligent adjustment, greatly improving construction efficiency and safety and reducing construction costs.