The reinforcement mesh of tunnel is a mesh with longitudinal reinforcement and transverse reinforcement arranged at a certain distance and at right angles to each other, and all intersections welded together. The reinforcement mesh of tunnel has the following characteristics: significantly improve the quality of reinforcement works, significantly improve the construction speed, and enhance the crack resistance of concrete.

　　有较好的综合经济效益隧道钢筋网是由纵向和横向钢筋十字交叉通过绑扎或焊接制作而成的网。是建设部"2005建筑业推广应用 10项新技术"内容之一。一片焊接网宜采用同一类型的钢筋焊成。

　　With better comprehensive economic benefits, the tunnel reinforcement mesh is made of longitudinal and transverse reinforcement by cross binding or welding. It is one of the contents of "2005 key promotion and application of 10 new technologies in construction industry" of the Ministry of construction. A welded mesh should be welded with the same type of reinforcement.

　　焊接网按形状、规格分为定型和定制两种。定型焊接网在两个方向上的钢筋间距和直径可以不同，但在同一个方向上的钢筋应具有相同的直径、间距和长度，已在有关标准、规程中作了规定。带肋钢筋伸长率较同类的冷加工钢材大。

　　According to the shape and specification, the welded mesh can be divided into two types: setting and customization. The spacing and diameter of the reinforcement in two directions of the shaped welded mesh can be different, but the reinforcement in the same direction should have the same diameter, spacing and length, which has been stipulated in the relevant standards and regulations. The elongation of ribbed bar is larger than that of the same kind of cold processed steel.