Shield segment bolts play a vital role in the tunnel construction process.
First, the connection and fixing function. The shield tunnel is assembled from segments, and the shield segment bolts firmly connect these segments together to form a stable tunnel structure. Inside the tunnel, the segment bolts bear various loads such as pressure from the surrounding soil, pressure from groundwater, and traffic in the tunnel. Only through the tight connection of the bolts can it be ensured that there will be no relative displacement between the segments and the overall stability and sealing of the tunnel can be guaranteed.
Second, the waterproof function. A good connection can reduce the gap between the segments, thereby reducing the risk of groundwater infiltration into the tunnel. Shield segment bolts are usually equipped with waterproof measures such as sealing gaskets. When the bolts are tightened, the sealing gaskets are compressed to form an effective waterproof seal between the segments to prevent groundwater from eroding and damaging the tunnel structure.
Third, adapt to tunnel deformation. During the construction and use of the tunnel, due to the influence of factors such as uneven settlement of the soil and earthquakes, the tunnel may deform to a certain extent. Shield segment bolts have a certain elasticity and deformation capacity, and can adapt to the deformation of the tunnel within a certain range, avoiding the rupture of the pipe segment or the failure of the connection due to excessive deformation.
In addition, it is convenient for construction and maintenance. The installation and removal of shield segment bolts are relatively convenient, which increases the construction speed of the tunnel. During the operation of the tunnel, if the pipe segment needs to be repaired or replaced, it can also be operated by loosening the bolts, which greatly reduces the difficulty and cost of maintenance.
Finally, ensure the safety of the tunnel. As an important transportation infrastructure, the safety of the tunnel is of vital importance. The reliable connection of shield segment bolts is one of the key factors to ensure the safety of the tunnel structure. If the bolts are loose or broken, it may cause serious accidents such as pipe segment falling off and tunnel collapse. Therefore, the quality and installation requirements of shield segment bolts are very strict.
In short, shield segment bolts play an indispensable role in the tunnel construction process, and their quality and performance are directly related to the structural stability, waterproofness and safety of the tunnel. In tunnel construction, the selection, installation and maintenance of shield segment bolts must be highly valued to ensure the smooth construction and long-term safe use of the tunnel.
