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Landslide section tunnel reinforcing device and reinforcing construction method

A technology for strengthening devices and tunnels, which is used in earth-moving drilling, installation of bolts, mining equipment, etc., can solve problems such as inability to adapt to the development of tunnel engineering, reduce tunnel support structures, and unsatisfactory reinforcement effects, so as to prevent tunnel diseases. , good mechanical properties, the effect of improving its own strength and self-stabilizing ability

Active Publication Date: 2015-03-04
SHANXI PROVINCIAL RES INST OF COMM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the most commonly used support measures are mainly anti-slide pile support, which uses anti-slide piles to form a safety island in the landslide, so that the tunnel is located in the isolated area and is not affected by the landslide; however, this scheme is only carried out on the landslide outside the tunnel. Reinforcement treatment is a passive method. For deep large-scale landslides, especially landslides with harsh geological conditions and large landslide thrust, the reinforcement effect is not ideal, the mechanical properties are unstable, and the construction cost is high.
The pre-reinforcement of the surrounding rock of the tunnel mainly adopts methods such as grouting and bolting to improve the mechanical parameters of the surrounding rock and reduce the force of the tunnel support structure. However, due to its high cost and poor treatment effect, it can only be used as an auxiliary measure
In short, considering the comprehensive consideration of mechanical properties and economic benefits, the existing tunnel reinforcement technology in the landslide area can no longer adapt to the development of tunnel engineering construction.

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  • Landslide section tunnel reinforcing device and reinforcing construction method
  • Landslide section tunnel reinforcing device and reinforcing construction method
  • Landslide section tunnel reinforcing device and reinforcing construction method

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Embodiment Construction

[0035] Below in conjunction with accompanying drawing and specific embodiment structure of the present invention and construction method thereof are described in further detail:

[0036] see figure 1 , figure 2 , image 3 , Figure 4 as well as Figure 5 , a tunnel reinforcement device in a landslide section mainly consists of pre-reinforcement piles 4, crown beams 5, prestressed anchor cables 8, water intercepting ditch 3, grouting body 9, angle plate 10, I-beam 11, steel backing plate 12, anchor Head 13, connecting steel bar 14, casing 15, primary support steel arch frame 16 and so on. Wherein, the prestressed anchor cable 8, the grouting body 9, the angle plate 10, the I-beam 11, the steel backing plate 12 and the anchor head 13 jointly form a prestressed tensioning device.

[0037] The pre-reinforcement piles are set at the arch feet on both sides of the tunnel in the landslide area; there are multiple pre-reinforcement piles; the crown beam is set on the top of all th...

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Abstract

The invention aims at solving the problems existing in an existing landslide section tunnel reinforcing technology and discloses a landslide section tunnel reinforcing device and a reinforcing construction method. The landslide section tunnel reinforcing device comprises multiple pre-reinforcement piles, crown beams, preliminary bracing steel arch frames and pre-stressed tension devices. The pre-reinforcement piles are arranged at the arch springing positions on two sides of a landslide section tunnel. The crown beams are arranged at the tops of all pre-reinforcement piles on the same side of the landslide section tunnel. The preliminary bracing steel arch frames are arranged on the crown beams on two sides of the landslide section tunnel. One end of each pre-stressed tension device is arranged in a rock body where the landslide section tunnel is located, and the other end of each pre-stressed tension device is connected with the corresponding preliminary bracing steel arch frame. Pre-stressed anchor cables are parallel to the inclination direction of the rock body where the landslide section tunnel is located. The landslide section tunnel reinforcing device is reasonable in structural design, good in mechanical property, good in operability and low in construction cost, and the reinforcing construction method is simple in steps.

Description

technical field [0001] The invention belongs to the technical field of prevention and control of geological disasters in tunnel engineering, and relates to a tunnel reinforcement device and a reinforcement construction method in a landslide section. Background technique [0002] In recent years, with the continuous development of my country's traffic construction, there are more and more expressway tunnels. Due to the limitation of terrain conditions, it is inevitable to pass through special strata such as landslides and weak fracture zones. As one of the most important geological disasters, landslide has the characteristics of diversity, complexity, and great harm, and has always been a hot issue in engineering research. [0003] The tunnel construction in the landslide section has a great impact on the landslide body itself, which is embodied in the following aspects: First, during the excavation process, the stress field and displacement field in the landslide body are ea...

Claims

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Application Information

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IPC IPC(8): E21D21/00E21D20/00
CPCE21D20/02E21D21/008
Inventor 薛晓辉申俊敏张军宿钟鸣孙志杰
Owner SHANXI PROVINCIAL RES INST OF COMM
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