In a tunnel boring machine (TBM), the main bearing is one of the most critical mechanical components, designed to withstand substantial loads while supporting the rotational movement of the cutterhead. To ensure stable and continuous TBM operation, protecting the main bearing…
Common Technical Challenges in TBM Tunnelling and Effective Control Solutions
Tunnel boring machines (TBMs) are essential equipment in many modern tunnelling projects, from metro systems and railway tunnels to large-scale underground infrastructure. By mechanising excavation and segmental tunnel lining installation, TBM technology offers significant advantages in productivity, precision and the ability…
TBM Annulus Grouting: Role and Solutions in TBM Tunnelling
Behind every advance of a Tunnel Boring Machine (TBM) lies a series of technical operations that must be precisely coordinated to ensure tunnel stability. Among these, TBM annulus grouting, also known as backfill grouting, plays a critical role in filling the…
TBM Foaming agents: From Technical properties to Application performance in TBM Tunnelling
What determines the performance of TBM foaming agents, and why can the same foaming agent deliver significantly different soil conditioning results under different tunnelling conditions? How can this performance be evaluated and controlled in practical applications? In practice, the effectiveness of…
TBM Soil Conditioning: Technology, Working Principles and Applications in Tunnel Construction
From highly adhesive clay and loose sandy soils to complex mixed ground conditions, each geological formation presents distinct challenges for Tunnel Boring Machine (TBM) operations. Controlling the properties of excavated soil is therefore essential to maintaining operational efficiency and stability throughout…
TBM Soil Conditioning – Optimizing TBM Operations with Eco-Friendly Approach
In Tunnel Boring Machine (TBM) tunnelling, the properties of excavated ground directly influence machine performance, face pressure control and overall excavation efficiency. Beyond technical performance, the environmental characteristics of soil conditioning additives and excavated materials are becoming increasingly important in underground…
