Anchor rod fixing device for tunnel construction and installation method thereof

Abstract

The invention discloses an anchor rod fixing device for tunnel construction. The anchor rod fixing device includes first fixing members and second fixing members. The first fixing members and the second fixing members both include horizontal splice plates, vertical plates and bottom connecting plates, the tail parts of the horizontal splice plates are vertically connected with the top ends of thevertical plates, the head parts of the bottom connecting plates are vertically connected with the bottom ends of the vertical plates, and the extending directions of the horizontal splice plates are opposite to the extending directions of the bottom connecting plates. The horizontal splice plates are provided with anchor rod locating holes, and the bottom connecting plates are provided with bolt holes. According to the anchor rod fixing device for the tunnel construction and the installation method thereof, the bolt holes are formed in steel frame flanges at certain intervals in the circumferential direction before implementation, the phenomenon of chaotic anchor rod distribution in the prior art can be improved through the distribution of the positions of the bolt holes, and the integrality of the anchor rod support of a system can be improved in longer ranges of tunnels.

Description

technical field [0001] The invention relates to the field of engineering support equipment, in particular to a bolt stabilizing device for tunnel construction and an installation method thereof. Background technique [0002] In recent years, with the construction of double-track railways, high-speed railway tunnels and two-lane, three-lane, and four-lane road tunnels in China, there are more and more large-section tunnels and complex geological conditions. Under the condition of weak strata (IV, V, VI grade surrounding rock), the initial stage of the tunnel is mainly composed of various support measures such as steel frame, shotcrete, steel mesh, and system bolts. Among them, the shotcrete and anchor bolt support has been widely used as early as the 1970s and 1980s. It can be seen that the anchor support has always occupied an important position in the tunnel primary support system. [0003] In the design of tunnel support parameters, a certain number of system bolts driven...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the bolt construction effect of the radial system is not good in tunnel construction at present, and to provide a device for improving the performance of the bolt support of the tunnel system and can be integrated with the steel frame, which can not only make the system The support function of the bolt is fully exerted, and it can also form an integral support system with the steel frame, thereby improving the bearing capacity of the primary support in the weak surrounding rock

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