Use of pipes – TUBES FOR SUB-HORIZONTAL TUNNELING
- Sub-horizontal tunneling actually are a sub-horizontal soldier pile wall with an arc-shaped section; it is used in tunnel with the target of containing the loose soil to prevent landslides.
- The steel pipes used for this purpose are often equipped with valves. Why Tubes for sub-horizontal tunneling are used?For tunneling, tubes are used as reinforcement because of the ease of junction to reach the predetermined length (usually m. 15-18) with threaded joint. They also can be considered as preventive consolidations, usually used during the steps of tunnel excavation or to hold up the excavation front temporarily.