KR200419269Y1 - Divided Type Messer Plate - Google Patents

Abstract

The present invention divides the method plate used in the method shielding method for the underground tunnel excavation into two members, a hood mesor plate and a tail mesor plate, so that the assembly and separation of each other can be performed more quickly and easily. The present invention is to provide a split type mesmer plate that can be easily exerted by preventing bending deformation or loosening of the fastening bolts from the connection part of the mesmer plate due to the load applied from the upper part during the excavation, thereby exhibiting excellent digging performance.

The present invention is composed of a hood mesa plate disposed in front and a tail mesa plate disposed to be connected to the rear of the hood mesa plate, a plurality of parallel disposed at intervals in the middle of the hood and tail mesa plate of the It is composed of two steel pipes, the hood mesmer plate side has a male sleeve in which the nut is welded to the inside of the connection side ends of the steel pipes, the tail mesmer plate side is bolted to the connection side ends of the steel pipes therein It is equipped with a welded arm sleeve to enable assembly and disassembly by fastening bolts and nuts in the direction of the center axis of the sleeve.

Tunnel, Excavation, Split, Method Plate, Sleeve, Assemble, Detach

Description

Divided Type Messer Plate

1 is a tunnel excavation construction using a conventional method shield method

Figure 2 is an exploded perspective view of a conventional split mesa plate

Figure 3a is a cross-sectional view of a state installed in a straight section connecting the conventional mesothelier plate and the connection meseter plate

Figure 3b is a cross-sectional view of a state in which the conventional connection mesa plate is separated and the leading mesa plate is installed in the bent portion

Figure 4 is an exploded perspective view of the split type messer plate of the present invention

Figure 5 is a cross-sectional view showing a state installed in a straight section by connecting the hood mesmerizing plate and the tail mesmerizing plate of the present invention

Figure 6 is a cross-sectional view showing a state in which the tail mesa plate of the present invention is separated and the hood mesa plate is installed in the bent portion

FIG. 7 is a cross-sectional view taken along line II of FIG.

8 is a cross-sectional view taken along the line II-II of FIG.

<Description of Symbols for Major Parts of Drawings>

10: hood messer plate 10a: steel pipe

11, 12: upper and lower fixing plates 13, 14: fastening angle

15: secondary angle 16: drilling rig

20: tail messer plate 20a: steel pipe

21, 22: upper and lower fixing plates 23, 24: fastening angle

25: auxiliary angle 26: extension plate

30: male sleeve 31: inclined fitting

32: engaging protrusion 40: arm sleeve

41: inclined insert 42: gap holding portion

B: Tightening bolt N: Nut

The present invention allows the method of the method to be used in the method shielding method for the underground tunnel excavation, by assembling or separating the hood mesmer plate and the tail mesor plate according to the site conditions. As well as to facilitate assembly and disassembly, and to facilitate handling and to prevent bending deformation or loosening of the fastening bolts at the connection part of the mesmer plate due to earth pressure during excavation. will be.

Messer shield method is a method of excavating while advancing the mescer plate forward using a hydraulic propulsion and excavation, while repeatedly performing the operation of fixing the earth plate on the steel beam to the rear of the mesmer plate.

That is, in the method of shielding the method, as shown in Fig. 1, when the tunnel is excavated, the messer plate M is arranged in parallel to the oscillation base in accordance with the planned tunnel shape, and each messer plate M is set by the hydraulic propeller D. While excavating the tunnel while pushing forward each time, the earth plate (P) is installed between the steel support (S) and the steel support (S) installed at a certain interval in the rear so that the excavation site does not collapse with the progress of the mesa plate (M). It is a method to excavate a tunnel by repeatedly inserting and supporting an excavation surface.

Messer plate (M) used at this time is a kind of underground excavation equipment, it is usefully used to construct a tunnel by excavating the ground difficult to be independent, such as the soil layer.

Such a conventional messer plate does not cause any problems in digging straight sections. However, the conventional mesor plate is manufactured to have a long length so that it can be stably supported by more support materials, and since the free working space is not secured in the excavated tunnel, the width at the bent portion that is bent in a new excavation direction in a straight section. This narrow and long length of the messer plate had a problem that it is difficult to install.

Therefore, in order to excavate a curved section in which the direction of excavation is changed as a conventional mesa plate, it is necessary to expand and excavate wider than the designed excavation area to provide a space for the excavation area so that a long mesmer plate can be installed in the bent portion that is bent along the straight section. There is a defect that the construction takes additional, there is a problem that the cost is increased accordingly.

As a conventional technique proposed to compensate for the defects of the conventional method plate as described above, Korean Utility Model Publication No. 20-0335817 (August 11, 2003), Korean Patent Publication No. 10-2005- 0012615 (published on Feb. 2, 2005) and Korean Laid-Open Patent Publication No. 10-2005-0013401 (published on Feb. 4, 2005) disclose a technique relating to a split type messer plate.

The conventional split mesa plate 1 disclosed in the above-described prior art forms a plurality of hydraulic propeller inserts 3a at the bottom, and an inclined surface 4 at the tip, as shown in FIGS. 2 to 3b. At the rear end, there is a front end messager plate (2) formed by extending the engaging plate (6) having the first bolted portion (5a), a plurality of hydraulic propeller insertion holes (3b) at the bottom, and the earth plate fitting (8) at the rear end. And a stepped surface 9 having a second bolt fastening portion 5b formed at the front end, and a connecting mesor plate 7 formed to fasten the bolt B in the vertical direction so that assembly and disassembly is possible. I share it with technology.

When the conventional split type mesmer plate 1 is to excavate a straight section, as shown in Figure 3a, by assembling and connecting the front end mesor plate 2 and the connecting mesor plate 7 to a long support material (S) Since it enables to support, there was an advantage that can stably dig a straight section in the tunnel.

In addition, when the excavation section is to be excavated, as shown in Fig. 3b, the connecting meser plate 7 is detached so that only the shorter mesmer plate 2 can be installed in the bend at the boundary of the straight section. There is no need to provide a space for overhang separately, which has the advantage of greatly reducing the workload.

However, in the conventional split mesa plate 1, when joining two divided members, the engaging plate 6 of the leading mesa plate 2 abuts against the step surface 9 of the connecting mesa plate 7. Then, the first bolt fastening portion 5a of the front end mesmer plate 2 and the second bolt fastening portion 5b of the connection mesmer plate 7 coincide with each other, and the bolt B is fastened upwardly and connected. In other words, it is made through the bolt connection work in the vertical direction has caused the following problems.

First, since the coupling between the two plates is made in the up and down direction, the first bolt connection part 5a of the tip mesor plate 2 and the second bolt connection part 5b of the connection mesmer plate 7 are exactly coincident. Since the bolt (B) can only be tightened at the end, the connection assembly, which requires the end position of the mesa plate (2) and the connection mesa plate (7) to be positioned at the correct position, is difficult and cumbersome, delaying the excavation and There was a problem of this deterioration.

Second, because the connecting portion between the tip mesor plate (2) and the connection mesmer plate (7) is exposed to the outside as it is directly affected by the vertical load due to earth pressure during the excavation of the tunnel, the tip mesor plate (2) having a relatively thin cross section thickness Of the coupling plate 6 of the bending plate or, in severe cases, between the first bolting portion 5a of the tip mesormer plate 2 and the second bolting portion 5b of the connecting mesormer plate 7 The phenomenon that the bolt (B) is relaxed, not only can not perform the excavation work properly, but also there is a problem such as excessive cost and maintenance life shortened due to maintenance.

Third, since the connection part between the tip mesor plate 2 and the connection mesor plate 7 is exposed to the outside as it is directly affected by the vertical load due to earth pressure during the excavation of the tunnel, it is difficult to assemble and disassemble the connection part during reuse. After completion of the construction was left buried in the ground to be excavated again with a new plate, there was a problem that the construction cost increases.

Therefore, in order to solve the above-mentioned problems, the present invention connects the hood and tail messager plates made of steel pipes and plate members with male sleeves and female sleeves, respectively, and is fastened in a central axis direction within the male sleeves and female sleeves. It is configured to be connected by bolts and nuts, to provide a split messor plate that improves the work efficiency due to tunnel excavation by facilitating the easy assembly and disassembly of the hood and tail mesmer plate and easy handling.

Another object of the present invention is that the connecting portion of the hood and tail mesmer plate is connected in the direction of the center axis of the sleeve, so that the assembly and disassembly can be performed without being influenced by the outside. It is an object of the present invention to provide a split mesmer plate that enables performance.

4 to 6, the present invention is divided into two parts, a hood meser plate disposed in front and a tail mesmer plate disposed so as to be connected to the rear of the hood mesmer plate. And technical concepts together.

However, the split type messer plate 100 of the present invention includes a plurality of steel pipes 10a and 20a arranged in parallel at intervals in the middle of the hood and tail messager plates 10 and 20, respectively. On the side of the hood messer plate 10, a male sleeve 30 is formed at the connection side ends of the steel pipes 10a to fix the nut N therein, and the steel pipes on the tail mesor plate 20 side. The arm sleeve 40 having the bolt receiving 43 welded therein at the connection side end of the parts 20a can be assembled and disassembled by the fastening bolt B and the nut N in the direction of the center axis of the sleeve. It is characterized by its technical configuration.

Hereinafter, the technical details of the present invention through the specific embodiments shown in the accompanying drawings in detail as follows.

As shown in FIGS. 5 and 7, the hood mesage plate 10 includes upper and lower fixing plates 11 and 12 in which steel pipes 10a arranged in parallel at intervals are fixed in a longitudinal direction between upper and lower middle parts. By being integral, the hood mesmer plate 10 itself has a cross section that effectively resists bending forces.

Here, the lower fixing plate 12 has the propelling holes 12a which are arranged at equal intervals, so that the hood messer plate 10 is placed on the propelling hole 12a by the operation of the hydraulic propeller (not shown) during tunnel excavation. ) To advance.

In addition, the hood mesage plate 10 is provided with a fixing angle 13 on one side of the upper outer side of any one of the steel pipes (10a), the other binding angle 14 on the lower outer side of the other one steel pipe. It should be installed.

When the one side and the other side mounting angle 13 and 14 of the hood mesmerizer plate 10 are excavated while advancing the divided mesmer plates 100 horizontally arranged in the tunnel one by one as shown in Fig. 7, The grooves 13a and 14a which are engaged with each other so as not to form a gap between the divided divided mesmer plates 100 are provided, thereby exhibiting a function of binding.

Here, it is to be noted that the hood angler plate 10 may be provided by installing an auxiliary angle 15 on the upper outer side of any one of the steel pipes 10a.

In addition, by forming the excavation blade (16) consisting of an upper horizontal portion (16a) extending from the upper portion of the steel pipe (10a) and a lower inclined portion (16b) extending from the lower end of the hood messer plate (10), The hood mesmer plate 10 is disposed in front so as not to interfere with the excavation function.

As shown in FIGS. 5 and 8, the tail mesmer plate 20 has steel pipes 20a arranged parallel to each other at a distance corresponding to the hood mesa plate 10 to be longitudinally fixed at an upper and lower middle. The upper and lower fixing plates 21 and 22 are integrated so that the tail messer plate 20 itself has a cross section that effectively resists bending force.

In addition, the tail messer plate 20 is provided with one side mounting angle 23 on the upper outer side of any one of the steel pipe 20a, and the other side fixing angle 24 on the lower outer side of the other one steel pipe. It should be installed.

One side and the other side mounting angles 23 and 24 of the tail mesmerizing plate 20 cooperate with one side and the other side mounting angles 13 and 14 of the hood meser plate 10 to be adjacent to each other when tunneling. The grooves 23a and 24a are interlocked with each other so that the gaps do not occur between the divided mesmer plates 100 so as to be engaged.

Here, it is to be noted that the tail messager plate 20 may be provided with an auxiliary angle 25 on the upper outer side of any one of the steel pipes 20a.

In addition, the tail plater space 20 is provided in the tail plater plate 20 in the lower portion of the extension plate 26 extending horizontally against the rear end of the upper fixing plate 21 at the upper end of the steel pipe 20a is cut off To be secured. The earth plate fitting space 27 can easily perform the operation of installing the earth plate 300 to be supported by the support member 200 installed in the newly created space as the split type mesmer plate 100 moves forward in the tunnel. To make sure.

As shown in FIG. 5, the male sleeve 30 has a cylindrical shape and is accommodated and fitted into the rear end portions of the steel pipes 10a of the hood mesmer plate 10 while being welded to the portion connected to the steel pipe 10a. One side protrudes outward and its outer surface is formed to have a downwardly inclined fitting portion 31, and a structural member in which the nut N is integrally welded and fixed.

The arm sleeve 40 has a cylindrical shape and is received and fitted into the front end portions of the steel pipes 20a of the tail messager plate 20, so that a portion connecting to the steel pipe 20a is welded and one side protrudes outward. It is formed to have an upwardly inclined insertion portion 41 on its inner surface, and the other side is a structural member in which the bolt receiving 43, which has a through hole 43a formed therein, is welded and fixed.

Here, on the outer surface of the male sleeve 30, one side to be fitted to the rear end of the steel pipe (10a) of the hood mesmer plate 10 and the other side formed with a boundary of the other side formed with a downward inclined fitting portion 31 protruding outward. It is preferable to form a group 32, so that the locking projection 32 of the male sleeve 30 can be fixed to the rear end of the steel pipe (10a) of the hood mesa plate 10.

When the male sleeve 30 and the female sleeve 40 are connected, the fastening bolt B and the nut N are set in such a state that they can be fastened naturally and integrally with the inner end of the female sleeve 40. Position the fastening bolt (B) through the through hole (43a) of the welded bolt receiving 43 to rotate from the rear with an impact wrench (not shown) to integrally weld fixed to the middle of the inside of the male sleeve (30) By coupling to the nut (N), the two members of the hood and the messer plate (10) (20) are connected and assembled.

As described above, in the male sleeve 30 and the female sleeve 40, the fastening bolt B and the nut N are assembled in the fastening state in the central axis direction of the sleeve, that is, in the horizontal direction. It facilitates work, and also enables assembly and disassembly without being influenced by the outside, so that large loads caused by earth pressure are not directly acted on, thereby preventing the coupling part from loosening.

The male sleeve 30 and the female sleeve 40, as shown in Figure 5, allows the hood and tail messer plate 10, 20 to be connected to each other more conveniently.

The split type messer plate 100 of the present invention, which is configured as described above, first, simply fits the male sleeve 30 and the arm sleeve 40 at the time of the assembly assembly of the hood and the tail mesa plate 10, 20, the Since the fastening bolt B is set in such a state that the fastening bolt B can be fastened through the through hole 43a of the nut N located in the male sleeve 30 and the bolt receiving 43 located inside the arm sleeve 40. Since the operator can quickly and easily connect the hood and tail mesa plate 10, 20 in the horizontal direction, there is an advantage that the work efficiency is improved while preventing the tunnel excavation work is delayed.

Second, the hood and tail messer plates 10 and 20 are made of steel pipes 10a and 20a having excellent rigidity, and the hood and tail messer plates 10 and 20 are mutually provided with a male sleeve 30. When the tunnel is excavated, it is connected by the arm sleeve 40 and is firmly connected as the fastening bolt B and the nut N which are fastened in the center axis direction in the male sleeve 30 and the arm sleeve 40. The excavation work of the tunnel can be performed faithfully by preventing bending deformation or loosening of the fastening bolt (B) at the connection part of the hood and tail mesmer plate (10) and (20) which are subjected to a large load by earth pressure. Not only that, but also to reduce the cost of maintenance, there is an advantage such as extending the service life.

As described above, the split mesor plate of the present invention connects the hood and tail mesor plate made of steel pipes with a male sleeve and an arm sleeve, and is fastened in a central axis direction within the male sleeve and the arm sleeve. By connecting bolts and nuts, it is possible to quickly and easily assemble and connect hood and tail messer plates, as well as the connection of hood and tail messer plates, which are subjected to large loads by earth pressure during tunnel excavation. It is a useful design having the effect of preventing bending deformation or loosening of the fastening bolt from above.

Claims (2)

In the configuration comprising a hood mesmer plate disposed in front and a tail mesmer plate disposed to be connected to the rear of the hood mesmer plate, The hood and tail messager plates 10 and 20 are each composed of a plurality of steel pipes 10a and 20a which are arranged in parallel at intervals in the middle, and the steel pipe 10a on the side of the hood messager plate 10. The male sleeve 30 is welded and fixed to the inner end of the nut (N) at the end of the connection, and the bolt messer 43 is provided at the end of the connection side of the steel pipes 20a at the tail mesmer plate 20 side. Split armed plate, characterized in that the arm sleeve (40) welded to be fixed to the assembly by the fastening bolt (B) and nut (N) in the direction of the center axis of the sleeve. According to claim 1, wherein the male sleeve 30 is a cylindrical shape is formed so that one side is fixed to the rear end of the steel pipe (10a) of the hood mesa plate 10 and the downward inclined fitting portion 31 protrudes outward on the other side It is formed to have a), the arm sleeve 40 is a cylindrical shape is fixed so that one side is fitted to the front end of the steel pipes (20a) of the tail messager plate 20 and the other side is protruded outwardly therein upwardly inserted A partitioned messer plate, characterized in that it is formed to have (41).

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