KR101314590B1 - super slurry type shield tunneling machine and super slurry type propulsion method - Google Patents

Abstract

Disclosed are a two-screw type excavator and a two-screw propulsion method, which can easily enlarge the diameter of the excavator, as well as easily connect a shaft diameter member having a diameter smaller than that of the excavator to the rear of the excavator.
According to the present invention, the propulsion pipe of the diameter corresponding to the diameter of the excavator having the same excavator, as well as the propulsion of the propulsion pipe larger or smaller than the excavator can be easily performed, so that only a small number of excavators In addition, it is possible to effectively build pipelines of various diameter sizes more than the number of excavators.

Description

Super slurry type shield tunneling machine and super slurry type propulsion method

The present invention relates to a two-sided excavator and two-sided propulsion method, and more particularly, a two-sided excavator and a two-sided excavator provided to build a pipeline having various diameter sizes more than the number of excavators with only a small number of excavators. It is about formula promotion method.

In general, the two-pronged propulsion method refers to a pipeline construction method for constructing a pipeline by pushing a propulsion tube pressurized by a jacky pressure toward the rear of the excavator while pushing the prepared distilled jet surface into the excavator.

The excavated soil generated in the excavation process is mixed with the dihydrate sprayed on the excavation surface to form a dihydrate mixture, and the dihydrate mixture is filled in the tail void formed between the excavation and the propulsion pipe formed during the excavation process, Allow the membrane layer to be roughened.

Therefore, according to this two-propulsion propulsion method, since the excavated surface is stabilized by the prepared water, the excavating efficiency of the excavator is improved, and the earth pressure around the propulsion pipe is improved by the two-layer wall formed on the inner surface of the tail void. It will work less and will be able to propel the propulsion pipe more smoothly over long distances.

Meanwhile, in the two-stage propulsion method, the diameter of the propulsion pipe is determined corresponding to the diameter of the pipe to be constructed, and the excavator is generally provided to have a diameter size corresponding to the diameter of the propulsion pipe. In the conventional two-stage propulsion method, which is determined to be constrained by the diameter size of the propulsion pipe, it is necessary to provide several excavators with different diameter sizes according to the diameter size of the pipe to be constructed at the construction site. There was a problem that the investment burden is excessively large.

The present invention is to solve this problem, an object of the present invention is to provide a two-stage excavator and two-stage propulsion method provided to build a pipeline of various diameter sizes than the number of excavators only a small number of excavators To provide.

To achieve this object, the two-screw type excavator according to the present invention is a two-screw type excavator having a cylindrical body and a cutter installed to be rotatable at the tip of the body for pipe excavation, the cutter outer periphery of the diameter of the cutter The cutter enlargement member for expanding the body is provided to be detachably coupled, and the body outer periphery is characterized in that the body enlargement member for expanding the diameter of the body is detachably coupled.

The cutter expanding member and the trunk expanding member may be detachably attached to the cutter and the body through a bolt fastening method.

In addition, the two-pronged propulsion method according to the present invention is to build a pipeline by pushing the propulsion tube pressurized by the pressure pressure jockey to the rear of the excavator to operate the injection while injecting the prepared musu to the excavation surface, the excavator is a cylindrical body and And a cutter installed to be rotatable at the tip of the body, for detachably mounting a cutter expanding member to enlarge the diameter of the cutter on the outer periphery of the cutter, and for enlarging the diameter of the body to the outer periphery of the body. It is characterized in that the body is detachably mounted to enlarge the diameter of the excavator, the propulsion tube of the size corresponding to the enlarged diameter of the excavator is characterized in that to propel the rear of the excavator.

In addition, the two-stage excavator according to the present invention is a cylindrical body for the pipe excavation, a cutter installed to be rotatable in front of the body, a dilution nozzle provided to spray the diuretic prepared in the excavation surface, and the prepared in the excavation process Stirring chamber provided in the rear of the cover to extend toward the stirring chamber to agitate the mixing chamber formed inside the body of the rear of the cutter to accommodate the dihydrate mixture formed by mixing the dihydrate and the excavated soil; It is provided, wherein the rear end of the body is provided to be detachably coupled to the shaft diameter member is smaller than the diameter of the rear end, the discharge chamber for discharging the dilution mixture of the stirring chamber in the radial direction on the outer circumference of the stirring chamber; Slit is provided.

The discharge slits may be provided in plural numbers spaced apart from each other along the outer circumference of the stirring chamber.

An interval between adjacent discharge slits is provided uniformly, and the size of the discharge slits is smaller than that located at the high side.

In the inner circumference of the stirring chamber is characterized in that the opening and closing device for selectively opening and closing the discharge slit is provided.

In addition, the two-propelled propulsion method according to the present invention is to propel the propulsion tube pressurized by the original pressure jockey to the rear of the excavator to operate the excavation, spraying diuretic prepared by the excavation surface in the excavation process of the diuretic mixture mixed with excavated soil and diuretic Filled in the tail void formed between the formed overhang and the propulsion pipe so that the membrane layer on the inner circumferential surface of the tail void wall, and the unitary aggregate is sprayed to form a unitary aggregate layer between the propulsion tube and the membrane layer. By constructing, the excavator is a cylindrical body, a cutter installed to be rotatable in front of the body, a distillation sphere provided to inject the dihydrate prepared by the excavation surface, and the dihydrate mixture formed during the excavation process The mixing chamber formed inside the body behind the cutter and the diluent mixture inside the stirring chamber And a stirring bit provided at the rear of the cover to extend toward the stirring chamber, wherein the shaft is detachably coupled to the rear of the body at least having a diameter of a rear end smaller than the diameter of the body, and formed at an outer circumference of the stirring chamber. Discharge the agitated mixture mixed in the stirring chamber in a radial direction through a plurality of discharge slits to increase the filling amount of the dihydrate mixture filled in the tail void, the propulsion pipe of the size corresponding to the rear end diameter of the shaft diameter member to the shaft diameter It is characterized by pushing to the member rear.

The plurality of discharge slits are disposed so as to be spaced apart from each other at regular intervals along the outer circumference of the stirring chamber so that the discharge amount of the distillate mixture discharged from the stirring chamber is evenly distributed around the stirring chamber.

The conduit is formed between the oscillation shaft formed from the ground perpendicular to the reaching shaft, the oscillation shaft is installed in the oscillation shaft on the inlet side of the conduit before the construction of the conduit, the shaft member in the construction of the conduit It is fixed in the state that is fitted to the inlet in the process of passing through the inlet, the auxiliary guard is covered around the inlet, the shaft is fitted in the state before the propulsion pipe is propelled behind the shaft member. The propulsion tube propelled from the rear of the shaft member is characterized in that it penetrates through the auxiliary guard in the propulsion process.

The pipeline is formed from the oscillation shaft formed vertically from the ground to the reaching shaft, the outlet shaft is installed in the reaching shaft corresponding to the exit of the pipeline before the construction of the pipeline is completed, the construction of the pipeline is completed At this point, the shaft-reducing member is separated from the excavator body in a state fixed to the outlet in the process of passing through the outlet, characterized in that to close the pipeline exit.

As described above, according to the two-pack type excavator and two-type propulsion method according to the present invention, it is possible to simply enlarge the diameter of the excavator, as well as simply connect the shaft diameter member smaller than the excavator to the rear of the excavator. It becomes possible.

Therefore, according to the present invention, the propulsion pipe of the diameter corresponding to the diameter of the excavator having the same excavator, as well as the propulsion of the propulsion pipe larger or smaller than the excavator can be easily performed, so that only a small number of excavators With this, it is possible to effectively build pipelines of various diameter sizes more than the number of excavators.

Figure 1 is a side cross-sectional view showing the structure of a two-stage excavator according to an embodiment of the present invention.
Figure 2 shows a state in which the two-pronged propulsion method is being performed by two-type excavator in the state of FIG.
Figure 3 is an enlarged view of the structure of the cutter and the cutter expansion member in a two-stage excavator according to an embodiment of the present invention.
Figure 4 is a front sectional view showing the structure of the trunk and trunk enlargement member in a two-pack type excavator according to an embodiment of the present invention.
5 shows a state in which the two-stage propulsion method is being performed in a two-stage excavator according to a preferred embodiment of the present invention in an expanded state.
Figure 6 is a side cross-sectional view showing a state in which the shaft member is connected to the rear of the trunk of the two-pack type excavator according to an embodiment of the present invention.
Figure 7 shows a structure of the discharge slit formed around the body of the stirring chamber in a two-pack type excavator according to an embodiment of the present invention.
8 is a view showing an initial state of construction of a two-pronged propulsion method performed in a state in which a shafted member is connected to a rear of a two-packed excavator according to a preferred embodiment of the present invention, and the shafted member is fixed to an inlet. It is shown.
9 illustrates a state in which a subsidiary order is installed around the entrance degree in the state of FIG.
FIG. 10 illustrates a state in which propulsion tubes are propelled to the rear of the shaft member in the state of FIG. 9.
FIG. 11 illustrates a front sectional structure of the propulsion tube in the state of FIG. 10.
12 is a view showing the end of the construction of the two-pronged propulsion method carried out in a state in which the shafted member is connected to the rear of the two-packed excavator according to an embodiment of the present invention, the shafted member is fixed to the outlet In showing the excavator is separated from the shaft member.

Hereinafter will be described in detail with reference to the two-packed excavator and two-packed propulsion method according to an embodiment of the present invention.

As shown in FIGS. 1 and 2, the two-screw type excavator 10 according to the present embodiment is provided to perform the excavation work at the forefront when constructing a pipeline by the two-stage propulsion method, and the cylindrical body 20 and It is provided with a cutter 30 that is rotatably installed at the tip of the body (20). The rotating shaft 31 at the center of the cutter 30 extends to the rear of the cutter 30 and is connected to the motor 21 located inside the trunk 20.

An oscillation shaft 1 and an arrival shaft 2 are formed vertically on the ground of the site where the inlet and the outlet of the pipeline to be constructed are formed, and the oscillator 1 includes an excavator 10 and a propulsion tube 100. A circular pressure jackie 200 for pressurizing the ground is installed. The entrance oscillation shaft 1 of the pipeline to be constructed and the exit shaft 2 of the pipeline to be constructed, respectively, have an entry and exit stage 310 and an exit stage, each of which is made of an entrapped rubber with an exponent rubber attached to a circular steel. ) Is installed to block groundwater leakage through the inlet and outlet of the pipeline during the excavation process.

Therefore, as shown in Figure 2, according to the two-pronged propulsion method, the excavator 10 introduced into the oscillation shaft 1 is first pressurized by the original pressure jackie 200 to be pushed into the ground and then the excavator (by the same method). 10) As the propulsion pipes 100 are sequentially pushed to the rear, the excavator 10 in which the cutter 30 rotates is pushed by the propulsion pipe 100 to build a pipeline.

In this excavation process, the excavator 10 and the propulsion tube 100 are formed around the percussion 3, and the tail void 4 is formed between the propulsion tube 100 and the perforation, and the tail void 4 is excavated. Filled distillation mixture (5) mixed with distilled water mixed in the excavated soil generated in the process from the tip of the excavator to the excavation surface is filled so that the membrane layer (6) on the inner circumferential surface of the tail void (4).

Isu contains siliceous sand, glass fiber and pulp fiber to easily fill the soil particles. Thus, the membrane layer 6 which is roughly formed of the dihydrate mixture 5 has a high degree of orderability and the propulsion process of the propulsion pipe 100. In the propulsion tube 100 to the less earth pressure to work so that the propulsion tube 100 can be smoothly propelled to a far distance.

A plurality of distillation ejection openings 32 are formed in the front center and the outer circumferential portion of the cutter 30 for spraying the prepared distillation water, and a diuretic supply pipe is disposed between the dilution injection opening 32 and the diuretic supplying device 300 disposed on the ground. 310 is connected. Accordingly, when distilled water is injected into the excavation surface through the distillation nozzle 32 in the excavation process, the excavation surface is stabilized, thereby improving the excavation efficiency of the excavator 10.

In addition, the diluent mixture 5 in front of the excavator 10 is introduced into the front of the trunk 20 of the excavator 10 via the cutter 30, and the inside of the trunk 20 behind the cutter 30 is completed. A stirring chamber 22 for accommodating the mixture 5 is formed, and a stirring bit 33 for stirring the diluent mixture 5 inside the stirring chamber 22 is formed around the rotating shaft 31 of the cutter 30. It is provided to extend into the stirring chamber 22. The inside of the trunk 20 behind the stirring chamber 22 is blocked by the partition plate 23.

Therefore, the dihydrate mixture 5 introduced into the stirring chamber 22 is agitated inside the stirring chamber 22 by the stirring bit 33 rotating at high speed together with the cutter 30 to increase the fluidity. 4) can be filled quickly.

And the inner partition wall 23 of the body 20, the discharge pipe 24 for discharging the remaining mixed water (5) is filled in the tailboard (4) to the ground is installed. The discharge pipe 24 is connected to the transfer pipe 410 extending to the ground to discharge the excess dilution mixture 5 to the discharge tank 400 of the ground, the discharge pipe 24 in front of the opening and closing of the discharge pipe 24 In order to hydraulically open and close the valve 25 is installed. The on-off valve 25 is constituted by a rubber valve 25b installed in the cylindrical valve case 25a, and the rubber valve 25b is configured to supply high pressure air by the air tank 520 and the air regulator 530. If you receive it, the gap opens and opens. Reference numeral 610, one end of which is connected to the valve case 25a, is an air supply pipe, and the other end of the air supply pipe 610 is connected to an air supply device 600 located on the ground. The dihydrate mixture 5 discharged to the ground through the discharge pipe 24 and the transfer pipe 410 is reprocessed and separated into dihydrate and aggregate, and dihydrate separated from the dihydrate mixture 5 is again transferred to the distillation supply device 300. Is committed.

In addition, a plurality of lubricant injection holes 29 are formed on the rear circumference of the body 20, and through the lubricant injection holes 29, unitary aggregate is continuously injected in accordance with the propulsion speed of the propulsion pipe 100. The unitary aggregate is a mixture of agent A, which is provided with vegetable oil, and agent B, which is prepared with sodium silicate. Therefore, the unitary aggregate sprayed to the outer surface of the propulsion tube through the lubricant injection hole 29 during the propulsion is gelled quickly so that the unitary aggregate layer 7 is formed inside the membrane layer 6, and the unitary aggregate layer ( 7) improves the degree of orderability and earth pressure bearing capacity so that the propulsion pipe 100 can be safely driven to a far distance.

Lubricant injection hole 29 is composed of a plurality of arranged to be spaced apart from each other along the rear circumference of the body 20 so as to evenly supply the unitary aggregate around the propulsion pipe 100, the unitary aggregate is united to be installed on the ground It is supplied to each lubricant injection hole 29 through the injection tube 910 from the mold aggregate supply device 900. Agents A and B, which form the aggregate aggregate, are delivered to the lubricant injection hole 29 through the injection tube 910 in an appropriate amount mixed in the aggregate aggregate supply device 90.

On the other hand, the excavator 10 according to the present embodiment is provided to be used in common in the construction of pipes of various diameters, the configuration according to this will be described.

As shown in Figure 2 and 3, the cutter expansion member 40 for increasing the diameter of the cutter 30 is provided on the outer periphery of the cutter 30 of the excavator 10 is detachably coupled, excavation The outer periphery of the body 20 of the machine 10 is provided to be detachably coupled to the trunk expanding member 50 for expanding the diameter of the body 20.

Cutter expanding member 40 is composed of a plurality of coupled to the outer peripheral end of the individual cutter blade (30A) constituting the cutter 30, the coupling of the cutter expanding member 40 to the outer circumference of the individual cutter blade (30A) At the end, a coupling groove 35 is formed on the inner circumference of the female thread, and each cutter expansion member 40 is coupled to the outer circumference so as to be detachably coupled to the coupling groove 35 by bolting. The projection 41 is provided.

Therefore, the diameter of the cutter 30 can be enlarged by the length of the cutter enlargement member 40 except for the length of the engaging projection 41, and when the cutter enlargement member 40 of various lengths is prepared, the cutter ( The diameter of 30 may be enlarged to various sizes according to the length of the cutter expanding member 40 coupled to the coupling groove 35.

And the trunk expanding member 50 is composed of a hollow tube provided to wrap around the body 20 in the state spaced apart from the outer periphery of the body 20, such a body expanding member 50 also through the bolted fastening method (20) It is coupled to be detachably attached to the outer circumference.

To this end, a plurality of fixing brackets 51 spaced apart from each other at regular intervals along the circumferential direction are fixed to the outer periphery of the body 20 by a bolting method, and the body expanding member 50 has an inner surface supported by the fixing bracket 51. (20) It is fixed in a bolted manner to the holder 51 in the fitted state.

In contrast to the case where the diameter of the body 20 is excessively large and it is difficult to fit the body enlargement member 50 around the body 20, the body enlargement member 50 is connected to each other in a continuous state unlike the present embodiment. It may be composed of a plurality of curved plate bodies arranged along the circumferential direction to form a shape.

Therefore, the two-pack type excavator 10 according to the present exemplary embodiment may be detached from the cutter expanding member 40 and the body expanding member 50 and the cutter and the body expanding member 40 coupled to the excavator 10. According to the length of 50), the diameter size can be expanded and varied in various sizes.

And the excavator 10 is provided so that the cutter and the body enlarger members 40, 50 are coupled through a simple detachable method, it is possible to easily perform the variable diameter expansion work without the cumbersome work such as welding or cutting.

5 shows a two-stage propulsion method using the excavator 10 having an enlarged diameter. At this time, the excavator 10 is inserted into the oscillation shaft (1) in the state in which the diameter of the cutter diameter expansion member 40 and the body diameter expansion member 50 is assembled in advance in the ground and pressurized into the ground, the enlarged excavation Behind the machine 10, a large diameter propulsion tube 110 corresponding to the diameter of the enlarged excavator is pushed. Therefore, in this case, it is possible to effectively build a pipeline having a diameter larger than that of the excavator 10 before the diameter is expanded.

Of course, even at this time, the tip of the excavator 10 is injected with high pressure distillation to the excavation surface, and the dihydrate mixture 5 mixed with the excavated soil generated in the excavation process is fed to the tail void 4 via the stirring chamber 22. By filling the membrane layer (6) to be filled to facilitate the propulsion operation of the propulsion pipe (110), the aggregate aggregate is injected into the outer surface of the propulsion pipe (110). At this time, the auxiliary lubricant injection hole 52 is formed on the outer surface of the trunk expanding member 50 of the portion corresponding to the lubricant injection hole 29 of the body, and the injection pipe 910 passes through the lubricant injection hole 29. Furnace to extend the auxiliary lubricant injection hole 52 to inject the aggregate aggregate to the outer surface of the propulsion pipe.

In addition, the excavator 10 may be used in the propulsion of the propulsion pipe 120 having a size smaller than the diameter of the cutter 30 or the body 20, the excavator 10 is the body 20 rear The diameter of the rear end is smaller than the diameter of the body 20 is provided with a shaft diameter member 60 is detachably coupled.

As shown in FIG. 6, the shaft diameter member 60 has a propulsion pipe 120 to which the diameter of the front end coupled to the rear end of the trunk 20 coincides with the trunk 20, and the diameter of the rear end propels behind the excavator 10. It is formed smaller than the tip to match the diameter. The diameter of the shaft diameter member 60 between the front end and the rear end is tapered to gradually decrease toward the rear end, so that the flow of the distillate mixture 5 filled in the tail void 4 is smooth, and the shaft diameter member 60 is The tip of the shaft member 60 is fastened to the rear end of the trunk 20 to be simply connected to the rear end of the trunk 20.

On the other hand, if the diameter of the propulsion pipe 120 is formed smaller than the diameter of the excavator 10, the tail void 4 formed between the overhang 3 and the propulsion pipe 120 is excessively large, this In order to form the membrane layer 6, the filling speed of the dihydrate mixture 5 filled in the tail void 4 may be lowered, which may slow down the propulsion of the propulsion pipe 120.

Accordingly, in order to solve this problem, discharge slits 22a, 22b, and 22c are formed on the outer circumference of the stirring chamber 22 to discharge radially the dihydrate mixture 5 inside the stirring chamber 22 in a radial direction. The dihydrate mixture 5 introduced into the seal 22 can be filled with the tail void 4 more quickly. 7 shows the structure of these discharge slits 22a, 22b, 22c in detail.

In addition, since the dihydrate mixture 5 has a high specific gravity of about 1.5 to 1.7 on average, the dihydrate mixture 5 inside the stirring chamber 22 has a tendency to be concentrated toward the lower side by its own weight. When the mixture 5 is concentrated and discharged toward the lower part of the propulsion pipe 120, the propulsion pipe 120 is gradually pushed upward, and the propulsion center of the propulsion pipe 120 is distorted, so that the propulsion pipe is driven by the original pressure jockey 200. There is a fear that the driving force of 120 is lowered.

Therefore, the discharge slits 22a, 22b, and 22c are configured in plural to be spaced apart from each other along the outer circumference of the stirring chamber 22, and the interval between adjacent discharge slits 22a, 22b, and 22c is provided to be constant. The discharge slits 22a, so that the discharge of the distillate mixture 5 discharged from the stirring chamber 22 is evenly distributed throughout the stirring chamber 22 even when the distillate mixture 5 is concentrated under the stirring chamber 22. The sizes of 22b and 22c are preferably smaller than those located on the lower side.

In this embodiment, the length of each discharge slit (22a, 22b, 22c) is constant, but the width of each discharge slit (22a, 22b, 22c) is formed smaller as it is located on the lower side than located on the upper side.

In addition, since the discharge slits 22a, 22b, and 22c are preferably used only when pushing the propulsion pipe 120 having a diameter smaller than the diameter of the excavator 10, the discharge slits 22a, An opening and closing device 70 for selectively opening and closing 22b and 22c is provided.

Referring to FIG. 1 again, the opening and closing device 70 has a ring-shaped opening and closing member 71 whose outer circumference is in close contact with the inner circumference of the stirring chamber 22 and the opening and closing member 71 along the inner circumferential surface of the stirring chamber in the longitudinal direction of the body. The sliding hydraulic cylinder 72 is configured to simultaneously open and close the plurality of discharge slits 22a, 22b, and 22c according to the sliding position of the opening / closing member 71 according to the operation of the hydraulic cylinder 72. The hydraulic cylinder 72 is preferably installed inside the body behind the side wall plate 23 so as not to be damaged by the diluent mixture of the stirring chamber 22.

8 to 12 sequentially illustrates a two-stage propulsion method using a propulsion tube 120 having a smaller diameter than the excavator 10.

In this case, as shown in FIG. 8, the oscillator 10 and the shaft diameter member 60 in the state in which the cutter enlargement member 40 or the body enlargement member 50 are removed are sequentially disposed on the oscillation shaft 1. Injected and pressed into the ground, the shaft member 60 is coupled to the fitting method in the rear end of the excavator 10 body 20 in the process of being pressed to the rear of the excavator (10).

In this process, the shaft member 60 is fixed while being inserted into the entrance member 310 while passing through the entrance member 310, in this state, as shown in FIG. Before the propulsion pipe 120 is propelled, an auxiliary order 330 is installed to cover the inlet order 310 and the axis diameter member 60 around the inlet order 310 into which the shaft diameter member 60 is fitted.

Subsequently, as shown in FIG. 10, the sub-order carriage 330 propels the propulsion pipe 120 having a small diameter corresponding to the diameter of the rear end of the shaft-reducing member 60 to be propelled to the rear of the shaft-reducing member 60. Pressed by the pipe 120 is penetrated.

Therefore, according to the present propulsion method, the rear end of the shaft-reducing member 60 having a larger diameter than that of the excavator 10 passes through the inlet-receiving member 310, and the rear end of the shaft-reducing member 60 and the inlet receiving member ( Even if a large amount of groundwater is discharged through a large gap between the 310, it is possible to effectively block the groundwater discharged to the oscillation shaft (1) discharged through the subsidiary cart 330.

Subsequently, as the propulsion pipes 120 having small diameters are sequentially pushed to the rear of the excavator 10 and the shaft member 60, the rear end portion between the oscillation shaft 1 and the reaching shaft 2 is rearward. A small diameter conduit corresponding to the diameter of can be constructed.

High pressure distillation is injected into the excavation surface at the tip of the excavator 10 during the construction of the pipeline, and the distillation mixture 5 mixed with the excavated soil generated from the excavation process is the tailboid 4 through the stirring chamber 22. It is filled with) to roughen the membrane layer, the unitary aggregate is injected through the lubricant injection port 29, the unitary aggregate layer 7 is formed on the outer surface of the propulsion pipe 120 inside the membrane layer. 11 shows the cross-sectional structure of the propulsion pipe 120 in this state in detail.

On the other hand, in this case, due to the large diameter difference between the overhang (3) and the propulsion pipe 120, the tail void 4 is excessively large, but in this case the discharge slit provided on the outer periphery of the excavator 10 toward the stirring chamber 22 ( As the 22a, 22b, and 22c are opened, the dihydrate mixture 5 introduced into the stirring chamber 22 is discharged to the outside of the excavator 10 through the discharge slits 22a, 22b, and 22c, and then the tailvoid 4 Because of the rapid filling, the membrane layer 6 can be formed on the tail void 4 quickly, so that the propulsion speed of the propulsion pipe 120 may not be lowered due to the delay in forming the membrane layer 6. .

In addition, at this time, even though the distillate mixture 5 inside the stirring chamber 22 is concentrated toward the lower side by its own weight, the upper one of the discharge slits 22a, 22b, 22c formed on the outer periphery of the stirring chamber 22 is located at the lower portion. It is formed smaller than that so that the discharge of the distillate mixture 5 is evenly distributed throughout the stirring chamber 22.

Therefore, according to the present embodiment, as the diameter of the propelling pipe 120 is significantly reduced, the diluent mixture 5 for forming the diaphragm layer 6 even in a state where the tail void 4 is excessively large is the propelling pipe 120. In the propulsion process of the propulsion) is evenly filled around the propulsion pipe 120, it is possible to effectively prevent the propulsion imbalance of the propulsion pipe 120 by asymmetrical filling of the dihydrate mixture (5).

 In addition, as shown in FIG. 12, at the time when the construction of the pipeline is almost completed, the excavator 10 and the shaft-reducing member 60 pass through the outlet step 320 which is installed in the reaching shaft 2. In this case, In the state in which the shaft member 60 is fixed to the outlet cage 320, the excavator 10 is separated from the shaft member 60 and transported to the ground, and the shaft member 60 is fixed to the outlet cage 320. In this state, the exit of the pipeline is closed.

Therefore, according to the present embodiment, the outlet of the conduit is formed and the inner periphery of the outlet of the conduit can be supported by the shaft member 60 so that the finishing operation of the conduit can be more easily performed.

Usually the diameter of large medium diameter propulsion pipe is 800 ~ 3000mm, the diameter of propulsion pipe used within this range is 800mm, 900mm, 1000mmm, 1100mm, 1200mm, 1350mm, 1500mm, 1650mm, 1800mm, 2000mm, 2200mm, 2400mm, Considering that 2600mm, 2800mm, 3000mm, according to the present invention, if only three excavators having a diameter of 1000mm, 1650mm, 2600mm it is possible to effectively propel the propulsion tubes of all the other diameters.

In other words, when connecting the shaft diameter member of 800mm and 900mm in the rear end to the 1000mm diameter excavator, it is possible to propel the propeller tubes of 800mm and 900mm diameter, and to push the 1000mm propulsion tube corresponding to the diameter of the excavator itself with the shaft diameter member removed. If the diameter of the excavator is expanded to 1100mm and 1200mm, it is possible to propel 1100mm and 1200mm propulsion tubes.

In the same way, it is possible to propel 1350mm and 1500mm and 1800mm and 2000mm propulsion tubes with a 1650mm diameter excavator and to propel 2200mm, 2400mm and 2800mm and 3000mm propulsion tubes with a 2600mm diameter excavator.

10: Excavator 20: Torso
22: stirring chamber 22a, 22b, 22c: discharge slit
30: cutter 40: cutter diameter member
50: trunk expansion member 60: shaft diameter member
70: switchgear 100,110,120: propulsion pipe

Claims (11)

delete delete delete Isu formed by mixing a cylindrical body, a cutter installed to be rotatable in front of the body, a diblast nozzle provided to inject diuretic prepared into the excavating surface, and the diuretic prepared in the excavation process and the excavated soil for digging a pipeline. In a two-packed excavator having a stirring chamber formed inside the body behind the cutter to accommodate the mixture, and a stirring bit provided at the rear of the cutter to extend toward the stirring chamber to agitate the dihydrate mixture inside the stirring chamber,
The rear of the body is provided to be detachably coupled to the shaft diameter member at least the rear end diameter is smaller than the diameter of the body,
Two-stage excavator is provided on the outer periphery of the stirring chamber is provided with a discharge slit for discharging the dihydrate mixture of the stirring chamber in the radial direction. 5. The method of claim 4,
The discharge slit is a two-pack excavator, characterized in that provided in a plurality of spaced apart from each other along the outer periphery of the stirring chamber. 6. The method of claim 5,
The spacing between adjacent discharge slits is provided constant,
The size of the discharge slit is a two-stage excavator, characterized in that the lower side is provided smaller than that located in the high side. 5. The method of claim 4,
Two-stage excavator is provided in the inner circumference of the stirring chamber is provided with an opening and closing device for selectively opening and closing the discharge slit. Propulsion of the propulsion tube pressurized by the original pressure jockey to the rear of the excavator to operate the excavation, and injection of the dihydrate prepared by the excavation surface is formed between the excavation of the distillate mixture of excavated soil and dihydrate formed in the process of excavation and the propulsion tube In the two-pronged propulsion method of filling the tail void to make the membrane layer on the inner circumferential surface of the tail void, and to build a pipeline by injecting the aggregate aggregate to form a unitary aggregate layer between the propulsion pipe and the membrane layer,
The excavator has a cylindrical body, a cutter installed to be rotatable in front of the body, a diluting spout provided to inject the dihydrate prepared by the excavating surface, and the cutter rear to accommodate the dihydrate mixture formed during the excavation process. A stirring chamber formed inside the body of the stirring chamber and a stirring bit provided at the rear of the cutter to extend toward the stirring chamber to agitate the distillate mixture inside the stirring chamber,
Removably coupling the shaft diameter member at least the rear end diameter is smaller than the diameter of the body to the rear of the body, and discharges the stirred mixture in the stirring chamber in the radial direction through a plurality of discharge slits formed on the outer periphery of the stirring chamber Increasing the filling amount of the dihydrate mixture is filled in the tail void,
Two-pronged propulsion method characterized in that for pushing the propulsion pipe of the size corresponding to the rear end diameter of the shaft diameter member behind the shaft diameter member. The method of claim 8,
And the plurality of discharge slits are arranged to be spaced apart from each other at regular intervals along the outer circumference of the stirring chamber so that the discharge amount of the distillate mixture discharged from the stirring chamber is evenly distributed around the stirring chamber. The method of claim 8,
The conduit is formed between the oscillation shaft and the reaching shaft formed perpendicular to the ground,
The entrance shaft is installed in the oscillation shaft at the entrance side of the pipeline before building the pipeline,
In the construction process of the pipeline, the shaft member is fixed in the state fitted to the inlet in the process of passing through the inlet,
In the state before the propulsion pipe is propelled to the rear of the shaft member, an auxiliary guard is covered around the inlet chassis in which the shaft member is fitted.
The propulsion pipe propelled from the rear of the shaft member is a two-pronged propulsion method, characterized in that penetrating through the sub-order in the propulsion process. The method of claim 8,
The conduit is formed between the oscillation shaft and the reaching shaft formed perpendicular to the ground,
The exit shaft is installed in the reaching shaft corresponding to the exit of the pipeline before the construction of the pipeline is completed,
At the time when the construction of the pipeline is completed, the shaft-reducing member is separated from the excavator body in a state fixed to the outlet in the process of passing through the outlet, it is characterized in that the end of the pipeline exit Formula propulsion method.

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