8tunnised

8tunnised is a term that refers to a specific type of tunnel construction method used in civil engineering and mining. The term is derived from the combination of "8" and "tunnel," with the "8" representing the shape of the tunnel cross-section. This method involves creating a tunnel with a circular or near-circular cross-section, which is then lined with concrete or other materials to form a stable and durable structure.

The 8tunnised method is particularly useful in situations where the tunnel needs to be stable and resistant to water ingress, such as in water supply systems, sewerage systems, and underground transportation networks. The circular shape of the tunnel provides structural stability and minimizes the risk of collapse, while the lining material helps to prevent water from seeping into the tunnel.

The construction process for an 8tunnised tunnel typically involves several stages. First, a pilot tunnel is excavated to provide a stable base for the main tunnel. The main tunnel is then excavated using a tunnel boring machine (TBM) or other excavation methods, depending on the soil and rock conditions. Once the main tunnel is excavated, it is lined with concrete or other materials to form a stable and durable structure.

One of the key advantages of the 8tunnised method is its ability to minimize ground disturbance and reduce the risk of damage to existing structures. The circular shape of the tunnel also allows for efficient use of space, making it an ideal choice for underground transportation networks and other applications where space is at a premium.

In summary, 8tunnised is a term that refers to a specific type of tunnel construction method used in civil engineering and mining. The method involves creating a tunnel with a circular or near-circular cross-section, which is then lined with concrete or other materials to form a stable and durable structure. The 8tunnised method is particularly useful in situations where the tunnel needs to be stable and resistant to water ingress, and it offers several advantages, including minimal ground disturbance and efficient use of space.