JP2000230393A - Apparatus and method for back-filling for tunnel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To back-fill a tunnel objectively and certainly without depending on intuition and experience of a worker. SOLUTION: A primary injection of filler is carried out through a first injection pipe 7, and a first sensor 10 attached to a recognition hole pipe 9 on a position approximately the same in the height as the top of a lining 2 finishes the primary injection of the filler. Then, a secondary injection of filler is carried out through a second injection pipe 8, and the secondary injection is finished when a second sensor 11 attached to the upper end of a recognition hole pipe 8 detects the filler.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filling device and a filling method for backfilling a tunnel for filling a cavity formed on the backside of a tunnel lining with an injection material safely and reliably.

[0002]

2. Description of the Related Art In tunnel construction, in order to fill a cavity formed between an excavated ground and a lining, a backfilling process of injecting a filler such as cement mortar or an organic foam material into the cavity. Is applied. In the filling operation of the filler, first, the primary injection of the filler is performed from a primary injection hole drilled at a position deviated to one side from the top of the lining. The primary injection is terminated when it is determined that an appropriate amount of the filler has been injected into the primary injection hole. Subsequently, a secondary injection of the filler is performed from the secondary injection hole provided on the opposite side of the primary injection hole, and the secondary injection is performed when it is determined that all the cavities are filled with the injection material. Is terminated.

[0003]

The above-mentioned filling operation is performed depending on the intuition and experience of the worker.
That is, while monitoring the injection amount and the injection pressure of the injection material, the worker ends the operation when determining that the cavity on the back side of the lining is filled with the injection material based on the monitoring. For this reason, there is no data or the like that objectively indicates that the cavity is filled with the filler, and there is a question about the reliability of the lining backfilling process.

In tunnel repair work, one side lane is often used as a traffic zone, and one side lane is often used as a work zone, and safety of ordinary vehicles during work has always been a problem.

[0005] In order to solve the above-mentioned problem, the present invention objectively detects and manages the filling of the injection material in order to reliably fill the cavity on the back side of the lining with the injection material in the backfilling operation of the tunnel. It is an object of the present invention to provide a filling device and a filling method capable of performing the above steps.

[0006]

In order to achieve the above-mentioned object, a filling device according to the present invention is inserted into a first injection hole drilled at a position deviated to one side from the top of a tunnel lining, A first injection pipe in which the primary injection of the filling material is performed, and a second injection pipe formed in a position deviated to the other side from the top of the tunnel lining.
The second injection of the filler is performed
Injection pipe, a confirmation hole pipe inserted into a confirmation hole drilled at the top of the tunnel lining, and a height substantially equal to the top of the tunnel lining when the confirmation hole pipe is inserted into the tunnel lining. A first sensor attached to the confirmation hole tube, a second sensor attached to a substantially top end of the confirmation hole tube, and a detection signal from each sensor connected to the first sensor and the second sensor. And a detection signal receiving means for receiving the detection signal.

Further, in the filling method according to the present invention, the step of piercing the first injection hole at a position deviated to one side from the top of the tunnel lining, and the step of forming the second injection hole at a position deviated to the other from the top of the tunnel lining. Drilling an injection hole, and a step of drilling a confirmation hole substantially at the top of the tunnel lining,
Inserting a confirmation hole tube having a first sensor attached to the top of the tunnel lining so as to be substantially equal in height and a second sensor attached to the top end;
Starting the primary injection of the filler through the injection hole, ending the primary injection when the first sensor detects the filler, and filling the filler through the second injection hole. 2
The method includes a step of starting the next injection and a step of ending the secondary injection when the second sensor detects the filler. The primary injection ends when the first sensor detects the filler, and the secondary injection ends when the second sensor injects the filler, thereby ensuring safe and reliable injection of the filler. Is achieved.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a filling apparatus and a filling method according to the present invention will be described in detail with reference to the drawings.

A tunnel 1 in which backfilling is performed, that is, a filler such as cement mortar or an organic foam is injected.
1 is shown in FIG. The tunnel 1 includes an existing lining 2, and a cavity 3 is formed on the back side of the lining 2. The first injection hole 4 is located at a position deviated to one side from the top of the lining 2.
Are bored, and a second injection hole is bored at a position deviated to the other side. A confirmation hole 6 inclined toward the first injection hole 4 is formed at the top of the lining 2.

FIG. 2 shows a state in which a filling device for backfilling the tunnel is attached to the tunnel 1. As shown in FIG. 2, the filling device according to the embodiment of the present invention
A first injection pipe 7 inserted into the injection hole 4 of the first, a second injection pipe 8 inserted into the second injection hole 5, and a confirmation hole pipe 9 inserted into the confirmation hole 6. This confirmation hole tube 9 is used for confirming hole 6
The first sensor 10 is attached at a position 3 to 5 cm above the top of the lining when inserted into the top of the lining. Sensor 11 is attached. Further, the first and second sensors 10 and 11 are connected to a filling detector 12, and the filling detector 12 is connected to a data processing terminal 14 via a data converter 13.

The first injection pipe 7 is an injection pipe for primary injection, and the second injection pipe 8 is an injection pipe for secondary injection.
As will be described later in detail, the first sensor 10 and the second sensor 11 detect the completion of the primary injection and the secondary injection, respectively. As the first and second sensors, a voltage detection sensor that detects the filler based on a voltage change when the filler reaches an electrode of the sensor can be used. When using a filler that cannot be detected by the voltage detection sensor, such as hard urethane foam, a pressure detection sensor that detects pressure due to foaming can be used.

The filling detector 12 connected to the first and second sensors 10 and 11 includes an LED. When a detection signal is received from the first and second sensors 10 and 11,
To notify the operator that the first and second sensors have detected the filler.

A data converter 13 connected to the filling detector 12 converts a signal supplied from the filling detector 12 into a signal.
The signal is converted into a signal that can be processed by the data processing terminal 14. The data processing terminal 14 is a terminal for inputting and outputting data described later, and the data processing terminal 14 may be a dedicated device, or may be realized by a combination of a computer device and an application program.

Here, using the above-described filling device, the cavity 3
The procedure for injecting the filler into the container will be described with reference to the flowchart shown in FIG.

In step S1, the first injection hole 4, the second injection hole 5, and the confirmation hole 6 shown in FIG. 1 are drilled using, for example, a diamond drill or a rock drill. At this time, the position of each hole is input to the data processing terminal 14.

In step S2, the first injection hole 4, the second
Then, a convex measure is inserted into each of the injection hole 5 and the confirmation hole 6 to measure the lining thickness of the lining 2 and the depth of the cavity 3. The value measured here is also input to the data processing terminal 14, and the expected injection amount of the injection material is calculated based on the depth of the cavity 3.

In step S3, the first injection hole 4, the second
The first injection pipe 7 and the second injection pipe
Of the injection tube 8 and the confirmation hole tube 9 are inserted. At the same time, the first sensor 10 and the second sensor 11 are installed. At this time,
The data processing terminal 14 includes the first and second sensors 10,
11 is input. In addition, the first and second injection pipes 7 and 8 and the confirmation hole pipe 9 are each wound with a rag, and the first and second injection holes 4 and 5 and the confirmation hole 6
, A wedge is driven while the first and second injection pipes 4 and 5 and the confirmation hole pipe 9 are inserted, thereby performing joint treatment.

In step S4, the primary injection of mortar via the first injection pipe 7 is started. This primary injection is
In step S5, the process is continued until the first sensor 10 detects mortar. In this step S5, as shown in FIG. 4, when the mortar reaches the first sensor 10, and when this sensor 10 detects the mortar, the process proceeds to step S6, and the primary injection is completed. At this time,
The mortar primary injection end time and the primary injection amount are input to the data processing terminal 14.

As described above, when the first sensor 10 which is attached to the confirmation hole pipe 9 inclined and inserted to the primary injection side and is located substantially at the top of the lining 2 detects the filler, the primary injection is performed. Is completed, it is possible to reliably prevent an accident that the filler material flows into the secondary side during the primary injection and the injected material leaks from the secondary side.

Subsequently, in step S7, the secondary injection of mortar via the second injection pipe 8 is started. This secondary injection continues until the second sensor detects mortar in step S8. In this step S8, as shown in FIG. 5, when the mortar reaches the second sensor 11 and the second sensor 11 detects the mortar, the process proceeds to step S9, and the secondary injection is terminated. At this time, the secondary injection end time and the secondary injection amount are input to the data processing terminal 14.

As described above, the secondary injection is performed until the second sensor 11 attached to the top end of the confirmation hole tube 9 detects the injection material, so that the cavity 3 can be reliably filled with the filler. .

When performing the above-described primary injection operation and secondary injection operation, the traffic on the working side lane is stopped, and the other lane is released to perform alternate traffic. As a result, the traffic in the tunnel is not completely shut down due to the construction.

When the filling of the mortar into the cavity 3 is completed according to the above procedure, the data processing terminal 14 outputs a management table indicating each data input or measured as described above in step S10. The management table may be output at the work site, or only the data may be collected at the work site, and the data may be analyzed and output at, for example, an office.

As described above, by recording the data regarding the backfilling work as needed, the backfilling work can be objectively confirmed and managed without relying on the intuition and experience of the operator.

[0025]

As described above, according to the present invention, the first sensor attached to the confirmation hole pipe inserted into the confirmation hole at the top of the tunnel lining and located substantially at the top of the tunnel lining includes the filler. The primary injection is terminated at the time when the filler is detected, and the secondary injection is terminated when the second sensor attached to the top end of the confirmation hole tube detects the filler.

As a result, it is possible to reliably perform the tunnel backfill work without depending on the intuition and experience of the worker. In addition, by recording the time at which the sensor detects the filler and the amount of filler injected as data, the progress status and completion date and time of the backfill work can be left as objective data.

[Brief description of the drawings]

FIG. 1 is a sectional view of a tunnel in which backfilling is performed.

FIG. 2 is a diagram showing a filling device according to an embodiment of the present invention.

FIG. 3 is a flowchart showing a procedure of a filling method according to an embodiment of the present invention.

FIG. 4 is a diagram showing the end of the primary injection.

FIG. 5 is a diagram showing the end of secondary injection.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tunnel 2 Lining 3 Cavity 7 1st injection pipe 8 2nd injection pipe 9 Confirmation hole pipe 10 1st sensor 11 2nd sensor 12 Filling detector 13 Data converter 14 Data processing terminal

 ────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kazuyuki Wakana F-term (reference) 2D055 JA02 JA05 in 3-18 Kandanishikicho, Chiyoda-ku, Tokyo

Claims (9)

[Claims] 1. A first injection pipe, which is inserted into a first injection hole drilled at a position deviated to one side from the top of a tunnel lining to perform primary injection of a filler, and a first injection pipe for the tunnel lining. A second injection pipe which is inserted into a second injection hole drilled at a position deviated from the top to the other side and in which a secondary injection of the filler is performed;
A confirmation hole pipe inserted into a confirmation hole drilled at a substantially top portion of the tunnel lining, and a height substantially equal to a top portion of the tunnel lining when the confirmation hole tube is inserted into the tunnel lining. A first sensor attached to the confirmation hole tube,
A tunnel back including a second sensor attached to a substantially top end of the confirmation hole tube, and detection signal receiving means connected to the first sensor and the second sensor and receiving a detection signal from each sensor. Filling device for filling. 2. The filling device for backfilling a tunnel according to claim 1, wherein the confirmation hole tube is inserted obliquely to the first injection tube side. 3. The filling device for backfilling a tunnel according to claim 1, wherein said first and second sensors are voltage detection sensors for detecting a change in voltage between electrodes. 4. The filling device for backfilling a tunnel according to claim 1, wherein said first and second sensors are pressure detecting sensors for detecting a pressure received by a sensor main body. 5. The filling device for backfilling a tunnel according to claim 1, wherein the detection signal receiving means includes an LED that emits light when a detection signal is received. 6. A filling apparatus for backfilling a tunnel according to claim 1, further comprising data processing means connected to said detection signal receiving means for recording start and end times of filling and a total injection amount. . 7. A step of piercing a first injection hole at a position deviated to one side from the top of the tunnel lining, and a step of piercing a second injection hole at a position deviated to the other from the top of the tunnel lining. Drilling a confirmation hole substantially at the top of the tunnel lining; and attaching a first hole to the confirmation hole at a height substantially equal to the top of the tunnel lining.
Inserting a confirmation hole tube having a first sensor and a second sensor attached to a top end, starting a primary injection of a filler through the first injection hole, Terminating the primary injection when the sensor detects the filler, starting the secondary injection of the filler through the second injection hole, and the second sensor And terminating the secondary injection at the time of detecting the material. 8. The method according to claim 7, further comprising a step of recording a start and / or end time of the primary injection and a step of recording a start and / or end time of the secondary injection. Filling method for tunnel backfill. 9. The back of a tunnel according to claim 7, further comprising a step of recording an injection amount of the filler in the primary injection and a step of recording an injection amount of the filler in the secondary injection. Filling method for filling.