JPS61257595A - Shielding excavation controller - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a shield excavation management device that manages the excavation status when a shield excavator excavates a tunnel or the like and issues a warning in the event of an abnormal situation.

(b) Conventional Technology When excavating a tunnel or the like using a shield excavator, it is necessary to constantly measure and check whether the excavation and propulsion operations are being performed properly.

Traditionally, such work has been performed manually.

(C) 0 Problems to be Solved by the Invention However, when there are a large number of measurement points, the manual measurement work becomes complicated, resulting in the inconvenience that it becomes impossible to respond quickly to abnormal situations.

In order to eliminate the above-mentioned drawbacks, the present invention can automatically collect measurement data from a large number of measuring devices and check the measurement data, and can therefore quickly respond to abnormal situations. The object of the present invention is to provide a shield excavation management device.

(d) Means for solving the zero problem, that is, the present invention provides detection means for detecting the excavation state of the shield excavator and detection means for detecting the propulsion state of the shield excavator, and the detection means for detecting the propulsion state of the shield excavator. In addition to providing a data collection means for collecting measurement data at regular intervals, a reference value memory storing reference values corresponding to each measurement data is provided,
data comparison means for comparing the measurement data collected by the data collection means with a corresponding reference value in the reference value memory to determine whether or not the measurement data indicates an abnormal value; An alarm means is provided for issuing an alarm when the comparison means determines that the measurement data indicates an abnormal value.

(e), ・Operation With the above-described configuration, the present invention is such that the data collection means collects measurement data from each detection means at regular intervals, and the data comparison means collects the measurement data and the reference value in the reference value memory. If it is determined that there is an abnormality in the measured data, the alarm means operates to issue an alarm.

(f), Example Embodiments of the present invention will be described below based on the drawings.

FIG. 1 is a control block diagram showing an embodiment of a shield excavation management device according to the present invention, FIG. 2 is a front sectional view showing an example of a shield excavator, and FIG. 3 is a flowchart showing an example of an excavation monitoring program. .

As shown in FIG. 2, the shield excavator 1 has a cylindrical outer shell 2. Inside the outer shell 2, as shown in FIG. 26 and shaft member 27
are arranged concentrically. A rotary shaft 3d forming the cutter 3 is rotatably supported by the bearing member 26 via a seal member 25, and the rotary shaft 3d is formed into a cylindrical shape surrounding the shaft member 27. A circular cutter 3 with a large number of excavation blades 3b provided on the excavation surface 3a via an arm 3C is provided on the left side of the rotation shaft 3d in FIG. 2, that is, on the front side in the excavation propulsion direction. A gear 3e formed in an annular shape is provided at the right end of the gear 3d. Note that a hydraulic motor 23, 23 is meshed with the gear 3e.

Further, on the right side of the cutter 3 in FIG.
A mud feeding pipe 22 for supplying muddy water is provided at the top, and a mud draining pipe 21 for discharging muddy water is provided at the bottom. Further, inside the outer shell 2, a plurality of propulsion hydraulic jacks 9 are provided along the circular cross section of the outer shell 2, and on the right side of the ram 9a of the hydraulic jack 9, there is an assembled state. A segment 10 is installed. A roundness holding device 11 is provided near the rear end of the outer shell 2 to properly hold and shape the assembled segments 10 in a rounded state. Further, number 12 is an erector for assembling the segment 10.

The shield excavation management device 5 also has a main control section 6, as shown in FIG. 15, reference value memory 16, measured value memory 17, alarm control section 20, system program memory 31, output display section 32
and a buffer memory 33 are connected. The data collection unit 15 includes a mud water pressure gauge 35, a face mud water pressure gauge 36, a mud water flow meter 37, a discharge mud water flow meter 39, and a mud water specific gravity meter 40.
, a waste mud water hydrometer 41, a cutter pressure gauge 42, a jack stroke detector 43, a jack pressure gauge 45, and a jack operation gauge 46 are connected. In addition, a mud water pressure gauge 35, a face mud water pressure gauge 36, a mud water flow meter 37, a discharge mud water flow meter 3
9. A feeding mud water hydrometer 40, a discharge mud water hydrometer 41, and a cutter pressure gauge 42 are detection means for detecting the excavation state of the shield, and a jack stroke detector 43 and a jack pressure gauge 4
5. The jack operation meter 46 is a detection means for detecting the propulsion state of the shield. Further, an alarm section 47 consisting of a lamp, a speaker, etc. is connected to the alarm control section 20.

Since the elliptical shield excavator 1 and the shield excavation management device 5 have the configurations described above, when the shield excavator 1 excavates a tunnel 14 having a circular cross section, the tunnel excavation is promoted as shown in FIG. The excavation surface 3a of the cutter 3 is directed to the left in the figure, and the hydraulic motor 23 is rotated to rotate the cutter 3 via the gear 3e, the rotation shaft 3d1, and the arm 3c. Then, the cross section of the face 29 is excavated in a circular shape by the cutter 3, and as the excavation progresses, the hydraulic jack 9 is driven and the segment 10 in the assembled state is used as a foothold via the ram 9a to excavate the outside. When the shell 2 is gradually moved in the direction indicated by the arrow, which is the excavation driving direction, a tunnel 14 having a circular cross section that matches the outer shape of the outer shell 2 is formed.

Note that the earth and sand excavated by the cutter 3 is stored in the mud room 19.
There, the slurry is transported to the outside via the mud removal pipe 21.

By the way, when performing such excavation work, it is extremely important to detect the excavation state of the shield excavator 1 and the propulsion state of the shield. That is, when excavating with the shield excavator 1, the shield excavation management device 5 has a mud feeding water pressure gauge 35, a face mud water pressure gauge 36, a mud feeding water flow rate needle 37, a draining mud water flow meter 39, a mud feeding water pressure gauge 40, and a draining mud water specific gravity. A total of 41, a cutter pressure gauge 42 detects whether there is any abnormality in the excavation state of the shield, and a jack stroke detection @ 43, a jack pressure gauge 45, and a jack operation needle 46 check whether there is any abnormality in the shield's propulsion state. Measure and monitor. That is, in the old road management device 5, a monitoring start command C1 is output from the keyboard 8 to the main control unit 6 as the shield excavator l starts excavation work. In response to this, the main control unit 6 reads the excavation monitoring program PRO from the system program memory 31 and starts monitoring the construction status based on the excavation monitoring program PRO.

As shown in Figure 3, the excavation monitoring program PRO includes:
Data collection is instructed in step S1, and the main control section 6 immediately instructs the data collection section 15 to collect data from each meter. The data collection unit 15 sequentially accesses the measurements @# from the mud feeding water pressure gauge 35 to the jack operation needle 45 at regular intervals, and when the values indicated by each instrument at a certain point in time are found, these values are is stored in the buffer memory 33 as measurement data DATA. Next, in step S2, the main control section 6 sends the measurement data DA to the data comparison section 13.
TA is compared with the reference value ST stored in the reference value memory 16, and further in step S3.

It is determined whether the measurement data DATA exceeds the reference value ST and shows an abnormal value. The reference value memory 16 stores items measured by each instrument, namely, the mud water feeding pressure, the mud water pressure at the face, the mud water feeding volume, the mud water volume, the mud water ratio type, the drainage mud specific gravity, the pressure acting on the cutter, and the hydraulic jack 9. protrusion amount, the pressure acting on the hydraulic jack 9, the hydraulic jack 9
Since the allowable standard value ST for the number of operating gauges is stored, by comparing the measurement data DATA for each instrument stored in the buffer memory 33 with the corresponding standard value ST, the excavation state of the shield and the shield can be determined. It is possible to accurately determine abnormalities related to the propulsion state of the vehicle.

In step S3, if the measurement data DATA exceeds the reference value ST and shows an abnormal value, the process proceeds to step S4, and the main control unit 6 drives the alarm control unit 20 to excavate the shield under construction. The alarm unit 47 is activated to notify that an abnormality has occurred in the state or propulsion state. Further, in step S3, if the measured data DATA does not exceed the reference value ST, the process proceeds to step S5, and the measured data DATA stored in the buffer memory 33 is stored in the measured value memory 17. Next, the process goes to step S6, and after confirming that no instruction to end the measurement operation has been input from the keyboard 5, the process returns to step S1 again to start a new measurement cycle.

Note that when an alarm is issued in step S4 or when it is necessary to refer to the measured data, the operator operates the keyboard 8 to obtain the constant value from the current point stored in the measured value memory 17. Measurement data up to the hour D
The ATA is read out and displayed on the output display section 32. Since the measured value memory 17 always stores the measured data DATA from the current time to a certain period of time ago, by displaying the measured data DATA over time via the output display section 32, abnormalities can be detected. It is possible to know in detail the behavior of each measurement point up to the point in time when it occurred.

Note that the combination of pressure gauges, flow meters, etc. that constitute the detection means for detecting the excavation state of the shield excavator and the detection means for detecting the propulsion state of the shield excavator is not limited to the example shown in 1st rIA. Appropriate combinations of measuring instruments can be used accordingly.

(g) 0 Effects of the Invention As explained above, according to the present invention, the feeding mud water pressure gauge 35, the face mud water pressure gauge 36, the mud feeding flow meter 37, the draining mud water flow meter 39, the mud feeding water specific gravity meter 40, Detection means for detecting the excavation state of the shield excavator, such as a waste mud water hydrometer 41 and a cutter pressure gauge 42, and a jack stroke detector 43, a jack pressure gauge 45, and a jack operating needle 46, for detecting the propulsion state of the shield excavator. A standard value is provided in which a standard value ST corresponding to each measured data DATA is stored. A memory 16 is provided, and the measurement data DATA collected by the data collection unit 15 is compared with the corresponding reference value ST in the reference value memory 16 to determine whether or not the measurement data DATA indicates an abnormal value. data comparison unit 13
an alarm control unit 20 which is provided with a data comparison means such as the above, and further issues an alarm when the data comparison means determines that the measurement data DATA shows an abnormal value;
Since alarm means such as the alarm unit 47 is provided, not only can the work of collecting measurement data DATA for a large number of measuring instruments be performed automatically, but also the work of checking the measurement data DATA can also be performed at each measurement cycle using the data comparison means. Since it can be performed every time, fine-grained construction management is possible, and abnormal situations can be quickly responded to.

[Brief explanation of the drawing]

Fig. 1 is a control block diagram showing an embodiment of a shield excavation management device according to the present invention, Fig. 2 is a front sectional view showing an example of a shield excavator, and Fig. 3 is a brooch yard diagram showing an example of an excavation monitoring program. be. 1... Shield excavator 5... Shield excavation management device 13... Data comparison means (data comparison section) 15.
...Data collection means (data collection section) 16...
... Reference value memory 20 ... Alarm means (alarm control section) 35 ...
...Detection means for detecting the excavation state (mud water pressure gauge) 36...Detection means for detecting the excavation state (face mud water pressure gauge) 37...Detection means for detecting the excavation state ( 39... Detection means for detecting the excavation state (sludge flow meter) 40... Detection means for detecting the excavation state (mud water hydrometer) 41... ... Detection means for detecting the excavation state (sludge water hydrometer) 42 ... Detection means for detecting the excavation state (cutter pressure gauge) 43 ... Detection means for detecting the propulsion state (gear 45... Detection means for detecting the propulsion state (judge pressure gauge) 46... Detection means for detecting the propulsion state (judge operation needle) 47... Alarm means (alarm section) ST...Reference value DATA...Measurement data Applicant Mitsui Construction Co., Ltd. Agent Patent attorney Phase 1) Shinji Fig. 2 ＞□pSpecial A-j machine・Figure 3 RO

Claims (1)

[Scope of Claims] A data collection means that includes a detection means for detecting the excavation state of the shield excavator and a detection means for detecting the propulsion state of the shield excavator, and collects measurement data from the detection means at regular intervals. and a reference value memory storing a reference value corresponding to each measurement data, and compares the measurement data collected by the data collection means with the corresponding reference value in the reference value memory to determine the measurement data. A data comparison means is provided for determining whether or not the measured data indicates an abnormal value, and further includes an alarm means for issuing an alarm when the data comparison means determines that the measured data indicates an abnormal value. A shield excavation management device provided and configured.