JPS602455B2 - Remote control excavation method in caisson construction method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a remotely controlled excavation method in the caisson construction method in which underground structures are constructed by excavating underground under pressure.

The caisson construction method does not require a water-stop structure in addition to the caisson frame, and has the advantage of being reliable and resistant to sudden collapses, as well as the high rigidity of the frame.Furthermore, the caisson construction method does not require any water-stopping structures other than the caisson frame. It has the advantage of being able to manually dispose of objects, as well as confirming the ground and testing its bearing capacity.

However, because the work is under high pressure, there are medical and other limitations on the workers and work methods.

In other words, the high-pressure air causes Minato-bako disease, the work environment has a high concentration of oxygen, which makes it easy to burn, and the closed environment causes problems with harmful gases and oxygen deficiency. Since the work time must be shortened (legal regulations apply), there are disadvantages such as low work efficiency. For example, Tokukan Sho 50-35911 discloses a technique for performing excavation work by remotely controlling an excavator that can run along rails provided on the ceiling of a keroso.

However, in the case of a large caisson, it is necessary to use a plurality of excavators, and therefore, when unmanned, it is necessary to prevent collisions between the excavators.
In addition, the excavator itself is more flexible than one that runs along rails.
For example, it is preferable to use something that can run freely, such as a bulldozer. Therefore, an object of the present invention is to provide an unmanned remote control excavation method for caisson construction that uses a plurality of movable excavators such as bulldozers and does not cause collisions between the excavators. .

According to the present invention, in the remotely controlled excavation method of the caisson construction method in which underground structures are constructed by excavating underground under pressure, an abnormality proximity detector detects an abnormality between the excavators or between the excavators and other equipment. It detects proximity and issues an alarm when it approaches a certain distance, and automatically stops the excavator when it gets closer than that, and uses colored lighting to distinguish the work room into a safe work zone and a caution work zone for the excavator. Dangerous work zones are divided into dangerous work zones, and each zone is illuminated with different lighting.The caisson frame allows workers to see through the work room and enter the capsule, which is placed under atmospheric pressure, to remotely control an excavator and drill underground. Excavation is now underway.

Therefore, since workers perform control work inside a capsule under atmospheric pressure, there is no risk of incubation disease or accidents, and there is no loss of work during changeovers. , it is safe because it detects it and automatically stops the excavator if it gets closer.

Furthermore, since we used lighting to identify each zone, workers only have to carry out relatively careful control work in dangerous zones.
Easy to work with. Therefore, effective remote control can be performed using the caisson construction method by using a plurality of excavators that can move freely, such as bulldozers, without running on rails. DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of implementing the construction method of the present invention will be described below with reference to the drawings.

Figure 1 shows the overall situation of underground excavation according to the construction method of the present invention. 1 is a caisson cheek body, which has a vertical caisson bottom plate la and a side wall lb, and the work is carried out under pressure. Room A
is formed.

A hole lc through which the control capsule 2 moves up and down is formed in the bottom plate la of the caisson frame 1, and an airlock portion 3 is airtightly connected to the hole lc. The air lock section 3 is provided with an airtight door (emergency door) 4 through which the operator can enter and exit, as shown in Figure 2 A, 2 and C, and a gate 5 is provided near the lower end of the air lock section 3. It is being The capsule 2 is raised and lowered by a winch 6, sheeps 7, 8, 9 and a wire rope 10 provided above the lock part 3,
Further, a stopper 11 is provided so that the capsule 2 can be stopped at a predetermined position. The air lock section 3 is placed under pressure, and the capsule 2 is placed under atmospheric pressure. ..., monitor TVs 14, 14 showing the situation in work room A, operator's chair 1
5 etc. are provided. Figures 3A, 3A and 3B show another example of the control capsule. In this example, the capsule 2 is fixed to the bottom la of the caisson shell 1, and the airlock part 3 as well as the capsule 2 is also under atmospheric pressure. It is placed below.

In this example, the operator's chair 15 is moved by the swing motor 16 along with the monitor televisions 14, 14 to the gears 17, 18,
It is adapted to be pivoted via a support punch 19. 20
indicates a slip ring, and 21 indicates a ladder for the operator to descend into the capsule 2.

Returning to FIG. 1 again, an excavator, in the example shown, a tractor shovel 22, 22 is arranged on the excavator B, and the excavator 22, 22 is remotely controlled by an operator in the capsule 2 by wireless or wired. Operated to perform underground excavation.

As the remote control method, a conventionally known remote control method may be used. A television camera 23, .・・・・・・・
The camera 23 is mounted on the excavator 22 and at important points in the work room A, in the example shown, the caisson frame 1.
It is provided at the corner of the inner surface of la next to the bottom.

Excavator position detectors 26, . death,
It is displayed on a projector that shows the entire working room A provided inside the control capsule 2.

The excavator 22 is provided with an abnormal proximity detector 24,
Excavator 22 comrades or excavator 22 and important points (other equipment)
The excavator 22 detects abnormal proximity between the excavators 22 (for example, the excavators 22 are holding traffic lights), issues an alarm when they approach each other within a certain distance, and automatically stops the excavator 22 when they approach further. Colored illuminators 27, .
...... is installed, and an excavator 22,
Divided into 22 safe work zones, caution work zones, and dangerous work zones, each zone has different colored lighting, such as white for safety belts,
Zone lighting will be done in yellow for caution zones and red for danger zones.

The image is photographed by the television camera 23 of the excavator 22 and displayed on the monitor television 14 inside the capsule. There is a flashing light 25 on the excavator 22.
is attached, and the information is displayed on the monitor television 14 to know the proximity of other excavators 22. As explained above, according to the construction method of the present invention, people are not allowed to enter the pressurized atmosphere during normal work, so there is a risk of death due to incubation disease, fire, harmful gas, oxygen deficiency, and excessive subsidence of the building frame due to caisson accidents, etc. There is no.

Moreover, since the work time can be increased, high efficiency can be achieved. Furthermore, by attaching a safety device to each excavator, it is possible to mechanically compensate for operator errors.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of a caisson shell showing a state in which underground excavation is being performed according to the construction method of the present invention. Figure 2 A, opening and C show the control capsule, Figure 2 A is a longitudinal sectional view, Figure 2 opening is a view taken along the arrow A-A' in Figure 2 I, and Figure 2 C is a view of Figure 2 I. It is a BB' arrow view of. Figure 3 A,
Figure 3A shows another example of the control capsule;
Figure C is a view taken along arrow B in Figure 3A. 1... Caisson body, 2... Control capsule, 3... Airlock section, 4... Door, 5... Gate, 6... Winch,
7, 8, 9...Sheave, 10...,.・Wire rope, 1
1...Stopper, 12...Door, 13...Peephole, 14...Monitor TV, 15...Chair, 16
...Swivel motor, 17, 18...Gear, 19...Support pestle, 20...Slip ring, 21...Ladder, 22... ...excavator,
23. ．．・．． ．． - Television camera, 24... Abnormal proximity detector, 25... Flashing light, 26... Excavator position detector, 27... Colored illuminator. Figure 1 Figure 2 Figure 3

Claims (1)

[Claims] 1. In a remotely controlled excavation method in the caisson construction method in which underground structures are constructed by excavating underground under pressure, an abnormality proximity detector allows excavators to detect distances between excavators or between excavators and other equipment. It detects abnormal proximity and issues an alarm when it approaches within a certain distance, and automatically stops the excavator when it approaches further than that, and uses colored lighting to create a safe work zone and caution work zone for the excavator inside the work room. The work area is divided into dangerous work zones and each zone is illuminated with different lighting, and the work room can be seen through the caisson frame, and workers enter the capsule, which is placed under atmospheric pressure, and remotely control the excavator. A remotely controlled excavation method in the caisson construction method, which is characterized by underground excavation. 2. The remote control excavation method in the caisson construction method according to claim 1, characterized in that a flashing light is attached to the excavator to monitor the work.