A prefabricated entrance to a working well

Abstract

The present invention relates to a prefabricated entrance to a working well, including a working well enclosure wall and an entrance sealing plate. The entrance sealing plate adopts two sealing plates flexibly connected by a sealing plate hinge, which is convenient for later removal. The entrance sealing plate and the working well enclosure wall are flexibly connected by a tongue-and-groove; a water-stop rubber strip is used to seal between the two sealing plates; a water-stop rubber strip is arranged between the tongue-and-groove for sealing; and anti-bending members are arranged at the hinges of the two sealing plates. When a shield machine or a pipe jacking machine enters and exits the working well entrance, the anti-bending member at the hinge is first removed, and then the shield machine or the pipe jacking machine is pushed forward, without cutting the working well enclosure concrete and steel bars, thereby accelerating the speed of entering and exiting the hole, and preventing too much groundwater from entering the working well, which has multiple advantages such as safety, convenience, and green environmental protection.

Description

Technical Field

[0001] The invention relates to a shield machine or a pipe jacking machine entering and exiting a working shaft, in particular to a working shaft entrance structure. Background Art

[0002] In the process of shield machine or pipe jacking machine entering and exiting the tunnel, in order to ensure safety, the cutter head of the pipe jacking machine or shield machine is usually used to directly grind away the concrete on the wall of the working shaft and cut the steel bars. The construction efficiency is low, the probability of water seepage is high, and the overall safety is low. There is an urgent need for a prefabricated opening structure for the working shaft that is easy to install and can be quickly disassembled and can quickly enter and exit the tunnel. Summary of the invention

[0003] The present invention is to provide a prefabricated entrance structure for a working well, which has two sealing plates flexibly connected by hinges, and the sealing plates and the working well wall are flexibly connected by tongues and grooves, and a waterproof rubber strip. It does not affect the rigidity and waterproof performance of the well wall (sealing plate) of the opening, but can quickly form an entrance to facilitate the shield machine or pipe jacking machine to enter and exit the hole, and can also reduce the wear of the mechanical cutter head and extend the service life, with multiple advantages such as safety, convenience and economy.

[0004] To achieve the above-mentioned purpose, the technical solution of the present invention is: a prefabricated entrance to a working shaft, including a working shaft enclosure wall and an opening sealing plate. The opening sealing plate adopts two sealing plates flexibly connected by a sealing plate hinge to facilitate later dismantling. The opening sealing plate and the working shaft enclosure wall are flexibly connected by a tongue-and-groove.

[0005] Furthermore, a water-stop rubber strip is used to seal between the two sealing plates.

[0006] Furthermore, a water-stop rubber strip is provided between the tongue and groove for sealing.

[0007] Furthermore, the two sealing plates are provided with bending-resistant members at the hinges of the sealing plates.

[0008] Furthermore, the anti-bending members at the tongue and groove and the cover plate hinges are used to resist the water and soil pressure at the tunnel entrance. When the shield machine or the pipe jacking machine enters and exits the working shaft tunnel entrance, the anti-bending members at the tongue and groove and the cover plate hinges are first removed, and then the shield machine or the pipe jacking machine is pushed forward.

[0009] The beneficial effects of the present invention are as follows: by adopting the present invention, the rigidity and water-stopping performance of the tunnel opening wall (sealing plate) are not affected, and the tunnel opening can be quickly formed to facilitate the entry of a shield machine or a pipe jacking machine, and the wear of the mechanical cutter head can be reduced, and the service life can be extended. The present invention has multiple advantages such as safety, convenience and economy. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a cross-sectional view of the prefabricated entrance structure of the working shaft (jacking stage);

[0011] Figure 2 This is the cross-section of the prefabricated entrance structure of the working shaft (entry stage);

[0012] Figure 3 It is a cross-sectional view of the prefabricated entrance structure of the working shaft (connection stage). DETAILED DESCRIPTION

[0013] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0014] like Figures 1 to 3 As shown, a prefabricated entrance to a working well of the present invention comprises:

[0015] (1) The opening cover plate is made of two cover plates 1 flexibly connected by a cover plate hinge 3, which is convenient for later removal. A water-stop rubber strip 2 is used between the two cover plates 1, and a bending-resistant member 4 is provided at the cover plate hinge 3;

[0016] (2) The hole cover plate and the working pit enclosure wall 5 are flexibly connected by a tongue and groove 6, and a water-stop rubber strip 2 is arranged between the tongue and groove 6;

[0017] (3) The tongue 6 and the bending-resistant member 4 at the hinge 3 of the sealing plate work together to resist the water and soil pressure at the hole. When the shield machine or the pipe jacking machine enters or exits the working shaft hole, the tongue 6 and the bending-resistant member 4 at the hinge 3 of the sealing plate are first removed, and then the shield machine or the pipe jacking machine is pushed forward.

Claims

1. A prefabricated entrance to a working well, characterized by: It includes a working shaft enclosure wall and a hole opening sealing plate. The hole opening sealing plate adopts two sealing plates flexibly connected by a sealing plate hinge to facilitate later removal. The hole opening sealing plate and the working shaft enclosure wall are flexibly connected by a tongue-and-groove connection. A water-stop rubber strip is used for sealing between the two sealing plates. A water-stop rubber strip is arranged between the tongues for sealing. Anti-bending members are arranged at the sealing plate hinges of the two sealing plates. The anti-bending members at the tongue and the sealing plate hinges are used to resist the water and soil pressure at the hole opening. When a shield machine or a pipe jacking machine enters and exits the working shaft hole opening, the anti-bending members at the tongue and the sealing plate hinges are first removed, and then the shield machine or the pipe jacking machine is pushed forward.

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