JP4854428B2 - Tunneling exploration machine - Google Patents

Description

  The present invention relates to a tunnel excavation exploration device, and more particularly, to a tunnel excavation exploration device that can visually confirm the state of the ground by an image during tunnel excavation work using a shield machine or a propulsion device for propulsion method. It is about.

In recent years, tunnel excavation work using tunnel excavation machines such as shield machines and propulsion machines for propulsion methods has been carried out greatly due to good work efficiency. The propulsion method is a method in which a tubular propulsion machine having a blade edge at the tip is propelled in the ground, and pipes are connected one after another to lay underground underground pipes in the ground. It is often used for construction of relatively small diameter tunnels that cross under railways.
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  There may be unknown obstacles such as buried objects in the ground, and when unknown obstacles stand on the planned excavation route during tunnel excavation work with shield machine or propulsion machine, The excavation work is temporarily stopped, the size, material, type, etc. of the obstacles are investigated by some means, and the method of proceeding with the excavation work is determined based on the investigation results.

  When conducting tunnel excavation work, it is normal to conduct a thorough investigation in advance to determine whether there are underground objects in the planned tunnel laying route.However, the preliminary investigation has its own limitations and is unknown during the excavation work. In many cases, obstacles were encountered. In this case, as described above, the excavation work had to be interrupted for the investigation, which had a serious impact on the smooth progress of the work. And this obstacle investigation is conducted by digging a vertical pit from the surface to the obstacle and confirming the obstacle directly with eyes, collecting a part of it as a sample, or irradiating the obstacle with electromagnetic waves However, in the former case, the implementation requires a great deal of labor and materials, and in some cases it is impossible to implement in urban areas where underground tunnels and buried objects are mixed. It was.

  On the other hand, in the latter case, if an oscillator is positioned at the tip of a shield machine or propulsion machine and electromagnetic waves are emitted toward the obstacle from now on, the survey can be conducted relatively smoothly, and surveys can be conducted even in urban areas. It has the advantage that it is possible, but it is necessary to prepare precise and expensive electronic equipment, experience and skill in data analysis are also required, and it is not possible to obtain clear images of obstacles at the current technical level Therefore, it must be said that there is a problem in terms of cost and accuracy compared to the former.

  The present inventor has conducted research to solve the above-mentioned problems regarding the investigation of obstacles during tunnel excavation work using shield machines and propulsion machines. We have succeeded in developing a convenient tunneling exploration machine capable of obtaining clear images of obstacles, and are proposed here as the present invention.

  A high-pressure water spray nozzle 4, a ground improvement chemical solution discharge port 5, a muddy water suction port 6, and a camera transparent window 7 are provided on the partition wall 2 of the elongated cylindrical body 1 whose tip is closed by the partition wall 2, respectively. Connected to the high-pressure water supply pipe 8, the ground improvement chemical supply pipe 9, and the muddy water suction pipe 10 disposed in the main body 1, and the outside is photographed by the TV camera 20 in the main body 1 through the camera transparent window 7. The above problems were solved by making it possible.

  This spacecraft for tunneling construction has a slender outer shape that can be inserted into a general-purpose device mounting valve 17 formed in the tip edge portion 13 of a shield machine or propulsion machine, and is unknown during tunnel construction work. When the obstacle 12 is encountered, it is attached to the tip edge part 13 of the shield machine or the propulsion machine, and if this is operated, a clear image of the obstacle 12 can be easily obtained. In addition, it is a compact device itself, and can be easily approached to the obstacle 12 even in an urban area where various tunnels and buried objects are mixed, and depending on the situation, it is not attached to a shield machine or propulsion machine. It may be approached directly from the ground surface 18 toward the obstacle 12, has a wide application range, and has extremely high practical value.

  A high water pressure injection nozzle 4 and a ground solution improving chemical solution discharge port 5 are formed on the front surface of the main body 1 having a long and narrow cylindrical shape that can be inserted into a general-purpose device mounting valve 17 formed in a tip blade portion 13 of a shield machine or a propulsion device. In addition, the mud water suction port 6 and the transparent window 7 for the camera are provided to perform hydraulic excavation, ground improvement, and excavation earth and sand by itself, and the TV camera 20 in the main body is obstructed through the transparent window 7 for the camera. The greatest feature exists in that an image of an object can be obtained.

  FIG. 1 is a perspective view of an embodiment of a tunneling exploration machine according to the present invention. In the figure, reference numeral 1 denotes a main body of the tunnel digging exploration machine, which is made of a solid metal and can be inserted into a general-purpose equipment mounting valve 17 formed at the tip edge portion 13 of a shield machine or a propulsion machine. It has an elongated cylindrical shape, and its front end is closed by a solid partition 2. A plurality of excavation hard chips 3 are fixed to the outer edge of the partition wall 2 at intervals, and can be excavated in the ground by pressing forward while applying a rotational motion to the main body 1. It is like. The main body 1 can be arbitrarily extended in length by adding an extension tube 19 having the same diameter to the rear end thereof.

  On the other hand, a high pressure water injection nozzle 4, a ground improvement chemical solution discharge port 5, a muddy water suction port 6, and a camera transparent window 7 are respectively attached to the partition wall 2 through the front and back. In this embodiment, three high-pressure water injection nozzles 4 are provided at equal intervals, but the number is not necessarily limited to three, and may be any other number as necessary. Similarly, in this embodiment, since the multiphase injection method using a combination of instantaneous and intermediate-type ground solution is used, two ground solution discharge ports 5 are provided. Of course, the number of the ground improvement chemical solution discharge ports 5 is determined according to the ground improvement chemical solution to be used. The above-described transparent window for camera 7 is not always attached, but is usually closed with a blind lid made of rubber or the like, and may be attached instead of this blind lid as necessary. Incidentally, in this embodiment, the main body 1 has an outer diameter of 48.6 mm, an inner diameter of 38.6 mm, the glasses transparent window 7 has a diameter of 18.7 mm, and the muddy water suction port 6 has a diameter of 13.00 mm.

  On the other hand, in the inner space of the main body 1, a high-pressure water supply pipe 8 connected to the high-pressure water injection nozzle 4, a ground improvement chemical solution discharge port 5, and a muddy water suction port 6, a ground improvement chemical solution supply tube 9, and muddy water, respectively. A suction pipe 10 is disposed, and high pressure water and ground improvement chemical solution supply from a high pressure water supply device and ground improvement chemical solution supply device (not shown) and muddy water suction by the muddy water suction device are performed, respectively. Yes.

  A small TV camera 20 such as a CCD camera is mounted inside the camera transparent window 7 so that the front side can be photographed through the camera transparent window 7. The TV camera 20 does not necessarily have to be always mounted, and may be mounted when necessary. The main body 1 is rotated and rotated forward and backward by rotating means (not shown).

  Next, a method of using this embodiment will be described. When an unknown obstacle 12 appears on the excavation route during tunnel excavation work with a shield machine or propulsion machine, the excavation work is temporarily stopped, and the excavation work is temporarily suspended, and the shield machine or propulsion machine being worked on is temporarily retracted. Let In this state, as shown in FIG. 2, the main body 1 is inserted into a general-purpose device mounting valve 17 provided at the tip edge portion 13 of this shield machine or propulsion machine, and the main body is driven by a driving means (not shown). While rotating 1, the main body 1 is advanced toward the obstacle 12 while high pressure water is jetted forward from the high pressure water jet nozzle 4, and natural ground excavation near the obstacle 12 is performed. At this time, an extension tube 19 is appropriately added to the rear end of the main body 1 so that the front end of the main body 1 reaches the vicinity of the obstacle 12. Then, after excavating the natural ground with this high-pressure water, the mud containing the earth and sand generated by the natural excavation is sucked from the mud water suction port 6, and then, as shown in FIG. A chemical solution for improvement is discharged, a ground improved region 21 is formed in the vicinity of the obstacle 12, high pressure water is sprayed again from the high pressure water spray nozzle 4, the earth and sand in front of the transparent window 7 for the camera is cut, and mud water is sucked. Muddy water containing earth and sand generated at that time is sucked and discharged from the mouth 6 to form a space 15 in the vicinity of the obstacle 12, and a part of the obstacle 12 is exposed in the space 15. The obstacle 12 is photographed by the TV camera 20 from the transparent window 7 to obtain an image of the obstacle 12. Then, by analyzing this image, the size, type, etc. of the obstacle 12 are discriminated and used as examination data such as a processing method thereof.

  In general, since the general-purpose device mounting valve 17 is provided in the tip blade portion 13 of many shield machines and propulsion devices, it is not necessary to provide the device mounting valve 17 again. When the device mounting valve 17 is not provided, a valve for mounting the main body 1 may be formed in the tip edge portion 13 of the shield machine or the propulsion machine prior to excavation work.

  Next, FIG. 5 and FIG. 6 show another usage of the exploration machine for tunneling construction. In this usage, the main body 1 is positioned vertically from the ground surface 18 toward the obstacle 12, and After performing hydraulic excavation and mud suction with high-pressure water and ground improvement by injecting chemical solution for ground improvement, the earth and sand in front of the TV camera is removed, a space 15 is formed, and the obstacle 12 is photographed by the TV camera 20 I do.

  As described above, the tunnel excavator for tunnel excavation work according to the present invention has an elongated outer shape that can be inserted into the device mounting valve 17 formed at the tip edge portion 12 of the shield machine or the propulsion machine. When an unknown obstacle 12 is encountered during the excavation work, it is attached to the tip edge 13 of the shield machine or propulsion device, and if this is operated, a clear image of the obstacle 12 can be easily obtained. Can be obtained. In addition, it is a long and compact device that can easily approach obstacles even in urban areas where various tunnels and buried objects are mixed. It can be made to approach directly from 18 to the obstacle 12, has a wide application range, and has extremely high practical value.

  It can be used greatly for various tunnel excavation works regardless of size.

The perspective view of one Example of the spacecraft for tunnel digging construction concerning this invention. The side view of the state which inserted the main body 1 in the apparatus attachment valve | bulb 17 of the front-end | tip blade part 13 of a shield machine or a propulsion machine. Similarly, the side view of the state which dug the main body 1 to the obstacle 12 vicinity. Similarly, the side view in which the vicinity of the obstacle 12 is improved, the space 15 is formed, and the photographing is possible. The side view of the state which dug the main body 1 directly from the ground surface 18 to the obstacle 12 vicinity. Similarly, the side view in which the vicinity of the obstacle 12 is improved, the space 15 is formed, and the photographing is possible.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main body 2 Bulkhead 3 Hard tip for excavation 4 High pressure water injection nozzle 5 Ground improvement chemical liquid discharge port 6 Mud water suction port 7 Transparent window for camera 8 High pressure water supply pipe 9 Ground improvement chemical liquid supply pipe 10 Mud water suction pipe 12 Obstacle 13 Tip edge 15 Space 17 Equipment mounting valve 18 Ground surface 19 Extension tube 20 TV camera 21 Ground improved area

Claims (5)

A high-pressure water spray nozzle, a ground improvement chemical solution discharge port, a muddy water suction port, and a transparent window for the camera are provided on the partition wall of the elongated cylindrical body whose tip is closed by the partition wall. It is connected to the installed high-pressure water supply pipe, ground improvement chemical supply pipe, and muddy water suction pipe, and the outside can be photographed with the TV camera in the main body through the transparent window for the camera. An exploration machine for tunneling work. 2. An exploration machine for tunnel excavation work according to claim 1, wherein the outer diameter of the main body is a dimension that can be inserted into a general-purpose device mounting valve formed at a tip blade portion of a shield machine or a propulsion machine. . 2. The tunnel excavator for tunnel excavation work according to claim 1, wherein a plurality of hard chips for excavation are fixed to the outer edge of the partition wall. 2. An exploration machine for tunnel excavation work according to claim 1, wherein the main body can be extended by adding extension tubes of the same diameter. 2. The exploration machine for tunneling construction according to claim 1, wherein the transparent window for the camera is removable and is usually replaced with a rubber blind cover.

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