Tunnel self-propelled mechanical stay platform and its construction method

Abstract

The invention discloses a tunnel self-propelled mechanical resident platform and a construction method thereof. The resident platform includes a platform body, an approach bridge connected to one end of the platform body, and a mud guard connected to the other end of the platform body. plate, a support system arranged at one end of the bottom of the platform body, and a crawler device fixed at the bottom of the support system, and a ship-type mobile device is fixed at the other end of the bottom of the platform body; the construction method includes step 1 : Assembling the self-propelled mechanical parking platform of the tunnel; Step 2: Excavating the upper steps; Step 3: Going up the vertical arch of the steps; Step 4: Excavating the lower steps; Step 5: Retreating the self-propelled mechanical parking platform of the tunnel; Step 6 : The lower steps are inverted and connected to the arch frame. The resident platform and its construction method realize the construction in the tunnel of the weak water-rich base through the cooperative application of the tunnel self-propelled mechanical resident platform and the 24-meter crawler self-propelled inverted arch trestle, which simplifies the construction process and reduces the construction cost .

Description

technical field [0001] The invention relates to the technical field of tunnel construction engineering, in particular to a tunnel self-propelled mechanical parking platform and a construction method thereof. Background technique [0002] Tunnel step method construction, the process is excavation of the upper step to excavate ballast - upper step vertical arch - lower step excavation and ballast - lower step vertical arch - upper step shotcrete - lower step shotcrete. [0003] Tunnels with weak water-rich bases, wheeled mobile concrete jetting machines and other wheeled equipment and crawler equipment are prone to sinking and cannot be used normally. Therefore, the conventional construction method is to pull the ballast from the outside of the tunnel to backfill after the steps are sprayed. The backfilling of ballast is synchronized with the excavation of the inverted arch. Before the pouring of the inverted arch, the ballast is shipped outside the tunnel. The inverted arch c...

AI Technical Summary

Problems solved by technology

[0003] Tunnels with weak water-rich bases, wheeled mobile concrete jetting machines and other wheeled equipment and crawler equipment are prone to sinking and cannot be used normally. Therefore, the conventional construction method is to pull the ballast from the outside of the tunnel to backfill after the steps are sprayed. The backfilling of ballast is synchronized with the excavation of the inverted arch. Before the pouring of the inverted arch, the ballast is shipped outside the tunnel. The inverted arch concrete can only be poured after the inverted arch ballast is cleaned, because the tunnel engineering geological condition is easy to soften. Surrounding rock, so all the ballast needs to be purchased, and the hole cannot be reused after being polluted, resulting in a great waste of cost. At the same time, the two processes of ballast filling and ballast removal are added, resulting in a longer cycle time and an increase in cost.

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