JP2700278B2 - Safety management system in underground construction - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a system for grasping the number and positions of workers in underground construction such as shield tunnel construction.

<Conventional technology> Conventionally, it was indispensable to know the number of workers entering a tunnel in preparation for an accident.

For this reason, a method is used in which the name tag is put down at the wellhead, the person flips his name tag when entering the mine, and returns to the original state at the time of digging.

<Problems to be Solved by the Present Invention> Such a conventional management method has the following problems.

<B> It is easy to forget to flip your name tag when entering or leaving a pit. In that case, it is impossible to judge whether the shaft has actually entered the shaft or has already left the shaft.

<B> Even if everyone operates the name tag accurately and knows the state of entering or leaving the mine, it is impossible to judge where they are in the mine.

Therefore, when an accident occurs in the middle of a tunnel and it is blocked, it is not possible to know how much shelter is on the safe side and how much remains behind the accident location.

<C> There is a name tag at the wellhead, so unless you go to that position, you cannot grasp the situation on the ground or in the office.

<D> Since the name tag is directly handled several times a day by the worker, it often becomes dirty and the character disappears or becomes unreadable.

<E> New name tags should be immediately installed or retired name tags should be removed immediately. However, accidents are rare and confirmation may not be accurate.

<Object of the present invention> The present invention has been made in order to improve such a conventional problem, and the management of the number of diggers and diggers is complete, and the management can also grasp the positions thereof. The purpose is to provide a system.

<Means for solving the problems> That is, the present invention divides the inside of the shield tunnel mine in tunnel construction into a plurality of sections, and the boundary of each section, and
A sensor is installed near the wellhead gate, a part of the personnel's body reacts to the sensor, an identification sign with information on each person is attached, a computer is installed on the ground, and the sensor is connected to the computer via optical fiber. There is a personnel management system in tunnel construction, which is configured to connect and record and display the distinction of personnel and their staying sections.

<Description of the Present Invention> Hereinafter, embodiments of the present invention will be described in detail.

<A> Setting of section The mine in Fig. 1 is divided into a plurality of sections.

In other words, the shaft section entered from the artificial is the shaft section, the first section L1, the second section at appropriate intervals toward the cutting edge
L2..., And a fixed range close to the most advanced face is set as a face section LC.

<B> Installation of sensors Sensor 1 is installed at the boundary of each section.

Signals from all the sensors 1 are transmitted to a computer 2 in a ground office via an optical fiber cable 3 or the like.

Therefore, in the office, the detection status of each sensor 1 can be immediately grasped, but not only that, but also a signal is input. Classification by worker's affiliation, relationship with time, etc. can be recorded and printed out as needed.

<C>Worker's identification sign Each worker has an identification sign 4 that reacts to the sensor 1 described above.
Possession.

With such an identification mark 4, information such as identification of an individual and identification of an organization to which the individual belongs can be given to the sensor 1.

For example, a radio wave ID card can be used as the identification mark 4.

Other than the radio wave method, there are a magnetic card, an IC card, and the like, but a non-contact radio wave notification method is appropriate as a safety management system for underground construction.

Because if you use a magnetic card or IC card,
The card needs to be inserted into or contacted with a card reader for the identification operation, and the identification operation takes about 10 seconds with currently developed devices.

This wastes a lot of time when a large number of workers enter and leave the mine in a concentrated manner.

Furthermore, if it takes time for the identification, there is a possibility that the identification work is avoided and a direct entry and exit are performed.

For these reasons, the radio wave method is desirable.

When using a radio wave ID card, an IC-ROM, ID
A modulator that modulates radio waves with a number, an antenna, and a battery are housed in a card-like case.

If the identification mark 4 is attached to the upper part of the worker's helmet or the like, and the sensor 1 is attached to the top of the tunnel, it can be detected and identified only by passing under the sensor 1.

<D> Combination of sensor 1 and identification marker 4 For the combination of the sensor 1 and identification marker 4, for example, the following products can be used.

<D> Other Examples Although the above explanation was based on the understanding of the worker, segment 5
Of course, it can also be used for management of loading and other members.

Further, in addition to the above-described sensor 1 for detecting the quantity, various devices such as a sensor 1 for gas and temperature or an alarm device can be provided at the same time, but the description of the present invention is omitted.

<Description of Operation> The operation of the above configuration will be described.

<A> Entrance and Exit from the Wellhead The gate 6 at the wellhead of the vertical shaft is opened and closed by detecting and identifying the identification mark 4 owned by the worker by the sensor 1.

Therefore, a worker who does not possess the identification mark 4 cannot pass through the wellhead gate.

<B> Passing and identification of the construction section The situation of the worker moving in the pit is detected and identified by the sensor 1 arranged at the boundary of the construction section.

At the top of the boundary of each section, for example, 24
Attach the ID sensor 1 that constantly transmits 50 MHz radio waves.

On the other hand, each worker attaches, for example, an ID card as the identification mark 4 to the head of the helmet.

The ID sensor 1 waits while waiting for the response of the ID card.

When the ID card receives the radio wave emitted by the ID sensor 1 when the worker passes the boundary of the construction zone, the ID card is assigned to each card.
A radio wave modulated by a code representing an ID number is emitted toward the sensor 1.

The sensor 1 receives a radio wave from a card, detects a code indicating an ID number, and transmits the code to a computer 2 such as an office via an optical fiber.

The computer 2 searches for the worker's name and affiliated organization from the ID number, and displays the worker's name on the display of the computer 2 in association with the detected work section.

Further, since the work position often corresponds to the work content, the computer 2 can perform the following data reduction.

(1) Name, number, affiliation, and work content of the workers who are currently entering the mine (2) Editing of the work records of the workers individually (3) Number of workers appearing every day and every month classified by work <The present invention Effects> The present invention is a system as described above.

 Therefore, the following effects can be achieved.

<B> Not only workers can enter and exit, but also workers can be confirmed by organization and name at the moment by work.

<B> Even in an emergency, the movement status of each person in the construction section is input to the computer in the office, so that the status of the criticism can be checked every moment.

<C> If the data of entrances and exits is organized, it is possible to easily create a monthly report that categorizes the work contents by checking the work place, as well as the working hours of employees and classification by company.

<D> Unauthorized persons without identification signs can be prevented from entering the pit.

<E> Since the movement of workers can be checked and recorded simply by passing near the sensor, it can be managed without relying on the consciousness of workers, or even workers who have luggage in both hands can be identified for confirmation. Can be.

<F> The present invention can be applied not only to the management of workers but also to the management of members.

<G> If a radio wave type ID card is used, since it is a non-contact type and has a short identification time, it is possible to confirm and identify many workers in a short time.

[Brief description of the drawings]

 Figure 1: Illustration of the system of the present invention

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Toshihiko Bessho 1-25-1, Nishi-Shinjuku, Shinjuku-ku, Tokyo Taisei Construction Co., Ltd. (72) Inventor Iwao Nakajima 201-33, Wakamatsucho, Chiba-shi, Chiba ) Inventor Seiichiro Tsuji 1041-135 Ushiku-cho, Ushiku City, Ibaraki Prefecture (72) Inventor Katsuhiro Ochiai 3-16-1 Sugita, Isogo-ku, Yokohama-shi, Kanagawa Prefecture (56) References JP-A-2-176966 (JP, A) Kaihei 1-194096 (JP, A)

Claims (1)

(57) [Claims] Claims: 1. A plurality of sections are divided in a shield tunnel pit in tunnel construction, and a sensor is provided at a boundary of each section and near a gate of a pit, and a part of the body of a worker responds to the sensor. An identification sign with information for each item was installed, a computer was installed on the ground, sensors were connected to the computer via optical fibers, and the system was configured to record and display the distinction of personnel and their staying sections. Personnel management system.