KR100805952B1 - Collapse prevent apparatus for sewer pipe propeling unit - Google Patents

Abstract

A leading apparatus of an approach for tunneling is provided to prevent the breaking of soil to the weak ground in excavation work, and to prevent the pollution of a workshop and machinery installed to the workshop by a leakage of muddy water. A leading apparatus of an approach for tunneling includes a water stopping case(10) fixed to a sheeting support(20) piling for preventing the breaking of soil or bedrock toward a vertical working hole formed at an approach for tunneling and closed at the upper, lower, right and left sides except the front and rear parts, and a water stopping rubber plate(12) having elastic force to expand and widen inward when a shield approaches forcibly to a through hole formed on the front of the water stopping case to have a smaller diameter than a cutter head of a cylindrical shield(1), and many bolt mounting portions formed on the outside of the water stopping rubber plate to be a little larger than the whole diameter of the shield, arranged radially on the circumference, coupled to the water stopping case through the water stopping rubber plate and composed of many pressure plates(15a) installed radially at regular intervals, long holes(15b) formed on the pressure plates, and bolts(15c) fitted to the long holes and screwed to the water stopping case to fix the water stopping rubber plate and the pressure plates, wherein an airtight structure(12a) is formed by expanding with elastic force and adhering a cross section by expansion closely to the outside of the shield when the shield approaches forcibly to the through hole of the water stopping rubber plate.

Description

Propulsion entrance lead device {COLLAPSE PREVENT APPARATUS FOR SEWER PIPE PROPELING UNIT}

The present invention relates to a propulsion inlet leading device, and more particularly, to prevent groundwater and earth and earth from collapsing into the ground weakened at the beginning of the work during the excavation work by the rotary grinding of the excavator cutter head, as well as supply during tunnel excavation. The present invention relates to a propulsion inlet leading device which prevents contamination of the workshop (vertical work tool) and the machine installed in the workplace due to leakage of water discharged (backflow).

In general, the propulsion method for the small diameter tunnel excavation work is a vertical operation of the steel cylindrical excavator (1), such as a micro tunneling machine (semi-shielding machine) or a semi-shielding machine as shown in FIG. The ground is excavated while rotating the cutter head (1 '), which is inserted into the sphere (2) and attached to the tip of the machine, and the subsurface is collapsed by applying various auxiliary methods (chemical injection) to the membrane. While preventing, it is a method of digging a tunnel while repeating the operation of pushing and pushing the propulsion pipes 4 installed at the rear of the tunnel excavator 1 into the hydraulic jack 5 one by one.

However, the excavator by the hydro-hydraulic propulsion method is injected with water or chemical liquid in order to fracture the rock more easily. Such a method may be easier to fracture the rock, but the soil has a lot of soil and the ground is weak. It is easy to collapse when passing by.

In addition, the excavator used in the small-hydraulic propulsion method is not shown in detail in the drawing, but even if equipped with equipment to discharge the discharged water by pumping it out, the leaked water (backflow) is increased so that the vertical work area is pushed through the tunnel. There is a problem that muddy water becomes prosperous.

This problem not only contaminated the propeller pushing the excavator to excavate the tunnel, but also made it difficult for the worker to perform the work, and the countermeasure was urgent.

Accordingly, the present invention has been made to solve the above problems, the purpose of which is not only to prevent the earth and sand to collapse to the ground at the beginning of the work during the excavation work by the rotary grinding of the excavator cutter head as well as tunnel excavation The present invention provides a propulsion inlet leading device which prevents contamination of the workplace (vertical work area) and the machine installed in the workplace due to leakage of water from the city.

The present invention for achieving the above object,

In small diameter tunnel excavation work by rotating grinding of cylindrical excavator cutter head,

To secure the solidity of the structure by applying a cement of a predetermined thickness to the outside of the entry portion for the excavation work of the excavator tunnel,

In the excavated entry portion, the top, bottom, left, right except for the front and rear parts fixed structure is installed,

A through hole having a diameter smaller than that of the cutter head is formed in the front portion of the still water box, and the through hole has an exponential rubber plate having an elastic force that can be enlarged and expanded inward when the excavator is forcibly entered.

And a rubber plate mount having a plurality of bolt mounts which are formed to be slightly larger than the total diameter of the excavator to the outside of the still water rubber plate, and are radially disposed around the still water rubber plate and are installed in the still water box. Has characteristics.

According to the present invention, in the initial stage for tunnel excavation, the cementation is applied to the excavation at the beginning of the excavation at a predetermined thickness and cured, and then the work is carried out, and the entire vertical tool is closed by the leakage of water during the excavation. Since the soil is contaminated with muddy water, it is possible to eliminate the risk of collapse that may occur in tunnel excavation and improve the working conditions by the airtight structure of the index rubber plate.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 is a perspective view showing the configuration of the propulsion inlet leading device according to the present invention, Figure 3 is a front configuration diagram of the present invention, Figure 4 is a cross-sectional view of the present invention in the state that the excavator is being pushed.

The core of the configuration of the present invention, as shown in Figures 2 and 4,

In the small diameter tunnel excavation work by the rotary grinding of the cylindrical head 1 'cutter head 1',

The excavator (1) by applying a cement of a predetermined thickness to the outside of the entry portion for tunnel excavation work to secure the robustness of the structure.

In addition, while forming a vertical work tool (2) in the excavated entry portion and the vertical work tool (2) is fixed to the piled support base 20 to prevent the soil or rock from collapsing, while the front, except for the rear The upper, lower, left, and right is provided with an exponent enclosure 10 having a closed structure.

In addition, a through hole 13 having a diameter smaller than the cutter head 1 ′ is formed in the front portion of the still water box 10, and the through hole 13 is enlarged when the excavator 1 is forcibly entered. It is provided with an index rubber plate 12 having an elastic force that can be opened.

In addition, it is formed slightly larger than the entire diameter of the excavator (1) to the outside of the water rubber plate 12, it is disposed radially around it and is bound to the water container 10 through the water rubber plate 12. It is configured to include a plurality of bolt mounting portion (15).

On the other hand, the bolt mounting portion 15 of the rubber plate mounting 14 is a plurality of pressure plate (15a) that is attached to be installed at an arbitrary equal interval radially, the long hole (15b) formed in the pressure plate (15a), and the long hole It is made of a bolt (15c) is fitted to (15b) and screwed to the still water box 10 to fix the still water rubber plate 12 and the pressure plate (15a).

On the other hand, when the forced penetration of the excavator 1 into the through hole 13 of the index rubber plate 12, the cross section by the diameter is in close contact with the outer surface of the excavator 1 in close contact with the outer surface of the excavator 1 when the forced force of the excavator 1 enters ) Is done.

Referring to the operating state of the present invention configured as described above are as follows.

Form a vertical work tool (2) at the beginning of the tunnel excavation and weld the still water box (10) to the piled support (20) to prevent soil or rock from collapsing with the vertical work tool (2). Before that, the exponent housing 10 is a sequential addition of the pressure plate (15a) is formed with an exponent rubber plate 12 and the long hole (15b) that serves as a packing in front of it, and the bolt (15c) into the long hole (15b) Mounting is done by screwing

On the other hand, when the excavator 1 is pushed by the hydraulic jack (not shown) as shown in FIG. 4 with the still water box 10 in this state, the outer diameter of the excavator 1 is the exponential rubber plate 12 Since it is larger than the inner diameter of the through hole 13, the end surface of the water rubber plate 12 is expanded while opening inward. As such, the structure in which the expansive rubber plate 12 is opened is made to have an airtight structure 12a which is completely in close contact with the outer surface of the excavator 1 by its elastic force.

The use of the airtight structure (12a) in the excavator (1) as well as the lubricating oil during the excavation of the soil or rock, as well as distillation (泥 水) is sent and drained through the pipe to drain out the pile, such water (泥 水) Since the leakage occurs during the flow of the pipe is to solve the problem of covering the vertical work tool to contaminate the leakage of water leaked out.

Although the present invention has been described in the closed structure of the upper, lower, left, right except for the front, rear portion, but not limited to this, may be configured to have a round type in the front, rear according to the work site.

1 is an embodiment of a typical small diameter tunnel excavation work.

Figure 2 is a perspective view showing the configuration of the propulsion inlet leading device according to the present invention.

3 is a front configuration diagram of the present invention.

4 is a cross-sectional view of the present invention in a state where an excavator is being pushed.

*** Explanation of symbols for main parts of drawing ***

1: excavator, 1 ': cutter head,

10: exponential enclosure, 12: exponential rubber plate,

12a: airtight structure, 13: through hole,

14: rubber plate mount, 15: bolt mount,

15a: pressure plate, 15b: long hole,

15c: bolt, 20: retainer support,

Claims (4)

In the small diameter tunnel excavation work by the rotary grinding of the cylindrical head 1 'cutter head 1', To secure the robustness of the structure by applying a cement of a predetermined thickness to the outer periphery of the entry portion for tunnel excavation work for the excavator (1), On the excavated entry portion, fixed installation of the water container 10 of the closed structure of the upper, lower, left, right except for the front, rear, A through hole 13 having a diameter smaller than the cutter head 1 ′ is formed in the front portion of the still water box 10. The through hole 13 is enlarged when the excavator 1 is forcibly entered into the through hole 13 to be opened inward. It is provided with an index rubber plate 12 having an elastic force that can be, The outer side of the water rubber plate 12 is formed to be slightly larger than the total diameter of the excavator (1), the radially disposed around the plurality of penetrating through the water rubber plate 12 installed in the water container 10 Propulsion inlet leading device characterized in that it comprises a bolt mounting portion (15). The method according to claim 1, The bolt mounting portion 15 of the rubber plate mounting base 14, A plurality of pressure plates 15a radially attached at random intervals, a long hole 15b formed on the pressure plate 15a, and a long hole 15b, which are screwed to the water stop box 10 and screwed into the water stopper 10 Propulsion inlet leading device characterized in that it comprises a (12) and the bolt (15c) for fixing the pressure plate (15a). The method according to claim 1, wherein the through-hole 13 of the water-resistant rubber plate 12, the diameter due to the elastic force during the forced entry of the excavator 1, the cross section by the diameter is in close contact with the outer surface of the excavator 1 is airtight Propulsion inlet leading device characterized in that the structure (12a) is made. The propulsion inlet leading device according to claim 1, wherein the front and rear of the still water box (10) are configured to have a round shape.

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