KR101913243B1 - Work method underwater - Google Patents

Abstract

The present invention relates to an underwater working method comprising: a process of installing riprap loading equipment (100), riprap transport equipment (110), and a transport tool (120) in order to dispose riprap (A) in water; a process of installing underwater working equipment (130) for underwater work; a process of arranging riprap (A) in water by using the installed riprap loading equipment (100), riprap transport equipment (110), and the transport tool (120); and a process of performing underwater work by using the installed underwater work equipment (130). According to the present invention, workability can be greatly improved by using various pieces of equipment such as riprap loading equipment, riprap transport equipment, underwater working equipment, and the like. Moreover, a work time can be greatly reduced, and construction costs can be reduced.

Description

[WORK METHOD UNDERWATER]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an underwater work method, and more particularly, to a method for conveniently performing underwater work using various equipment.

Generally, in order to carry out caisson, immersion tunnel and block type quay wall construction at sea, firstly, foundation stone is dropped at the bottom of the structure.

However, when the foundation stone is dropped into the water, it is necessary to make the height of the stone slope constant since the height of the stone slabs up. This work is called sandstone planarization. In the past, the diver used the sandstone that was built in the water and transported from the barge to perform the sandstone planarization work. As described above, when the flattening operation is performed directly by the force, there is a problem that not only the workability is lowered but also the working period is increased.

The present invention relates to a vibrohammer which is installed vertically on a ship and a vibrohammer which is mounted on the upper end of the girder so as to be able to ascend and descend, a steel pipe vertically connected to the lower portion of the vibrohammer, And a damper installed on the hull and lowering the vibrohammer so that the tamper contacts the base asbestos to change the center of gravity of the hull, A damper moving amount measuring device for measuring a displacement amount of the height of the tamper, a tachometer installed on the land to measure and transmit the trough of the sea surface in real time, and a tachometer mounted on the tachometer, A yaw rate measuring device provided with a yaw rate measuring system for receiving a signal of the yaw rate measuring device, An underwater soft ground improvement work line having a controller for comparing and determining the information of the compaction and picking position information of the accurate tamper using the GPS, , The vibrohammer is lowered on the foundation asbestos to be installed, and the tampers are placed on the foundation asbestos to perform compaction. The accurate positioning information of the working position is received in real time by GPS, And detects the upward and downward displacement of the ship due to a change in load caused by the fact that the tamper is seated on the base asbestos surface through the draft detecting device, and transmits the detected upward and downward displacement of the ship to the control unit. The control unit corrects the position of the tamper So that it can be corrected while being grasped, and the seawater This system is able to grasp the level of the foundation stone by comparing the design value with the sea level tidal value by receiving the tide of the surface in real time, (Refer to Patent Document 1).

In addition, the present invention relates to an asbestos asbestos processing apparatus, comprising: a communicating unit for measuring a reference height of a design quarry asbestos, a sensor for measuring an elevation and a shape of the equipment, And a control unit connected to the communication unit and controlling the operation unit by collecting a signal transmitted from the communication unit and a signal provided from the operation unit, wherein the operation unit is coupled to both sides of the body, and a hydraulic cylinder A plurality of outriggers which are operated vertically, a traveling track which is rotatably coupled to each of the outriggers by a pin joint, a sandstone grinding tool mounted on the body, And a sensor mounted on the body for measuring an altitude and a shape of the body and transmitting the measurement to the controller, (Hereinafter, referred to as " mechanization system ") has been proposed (refer to Patent Document 2).

Korean Patent No. 10-0651697 Korean Patent Laid-Open Nos. 10-2012-0039234

The present invention utilizes a variety of equipment such as sludge stacking equipment, crushing conveying equipment and underwater work equipment to more conveniently perform underwater flattening work, while maximizing the safety of underwater workers, The present invention provides an underwater work method capable of providing water quality information that can be diagnosed in real time.

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In order to accomplish the above object, the present invention provides an underwater work method comprising the steps of installing a siltstone loading device, a rock loading device, and a transportation port in order to place a rock in water; Installing an underwater work equipment for underwater work; Disposing stones in water using the installed stonemasoning equipment, stonecuttering equipment, and transportation port; And a step of performing an underwater work using the installed underwater work equipment. In addition, the step of disposing stones in water by using the installed stonry loading equipment, stoneware transporting equipment, Loading stones in a carrier coupled to the hook of the stonemason conveying equipment by operating the stonewall conveying equipment; Wherein the worker performs a submergence operation using the installed underwater work equipment by submerging the submerged worker from the submerged ship through the air supply cable Connecting a rope to a sliding gate installed at a lower portion of the carrier while being supplied with air; The underwater operator operates the excavator main body to pull the rope to the outside of the transportation port to open the sliding gate to discharge the stones stacked on the transportation port to the outside; Adjusting the level of the transport through the surveying system; Separating the discharged stones and the residual stones remaining in the carrier by an underwater operator operating the excavator body to pull the rope inward of the delivery port to close the sliding gate; The operator manipulating the baggage handling equipment to raise the baggage to its original position for loading the baggage; The underwater worker may operate the excavator main body to perform a planarization work on the discharged stonework, and the underwater worker may wear the submerged suit which can be injected with gas through the gas supply cable from the submerged line in the event of an emergency Wherein the sub-suit comprises a sound generator, a searchlight and an emergency device, the emergency device comprising: an actuation switch for initiating operation of the emergency device upon physically cut or broken; A controller which is driven by the operation of the operation switch to generate an emergency rescue signal by radio wave or underwater sound; A wireless module for transmitting an emergency rescue signal to a radio wave signal under the control of the controller; An underwater acoustic module for receiving structural signals underwater under the control of the controller; A microphone for voice input; A camera for capturing an image; And a memory unit for storing voice and images input through the microphone and the camera under the control of the controller. When the underwater operator operates the excavator main body to perform the flattening operation on the discharged stones, , A radio wave signal or an underwater sound signal, while the sound signal is transmitted to the underwater worker (W) through a gas supply cable, The pH, the electric conductivity, the total dissolved solid matter, the salinity, the seawater specific gravity, the dissolved oxygen amount and the oxygen saturation are measured by the sound or the light. A temperature sensor, a pH sensor, an EC sensor, and a DO sensor, and a temperature sensor, a pH sensor, an EC sensor, and a DO sensor And a pH calculator and an EC calculator corresponding to the pH sensor and the EC sensor perform temperature compensation by using the value of the water temperature sensor and convert the electrical signals measured by the DO A DO operator corresponding to the sensor includes a sensor module having an operator for performing temperature compensation and salinity compensation using temperature and electrical conductivity values; And a communication module for transmitting a measurement index to a water quality analysis center for diagnosing the water quality environment based on the measured value based on the measured value, wherein the water quality during the flattening operation for the discharged stale by operating the excavator main body by the underwater worker The analysis center is characterized by providing various water quality information in a real-time manner so as to diagnose the water environment in the vicinity of the work site.

Here, the step of installing the underwater work equipment for the underwater operation includes a step of dismounting the power generation device including the engine, the fuel tank, the hydraulic pump, and the hydraulic oil tank from the excavator, ; Immersing only the main body of the excavator in the underwater floor with the oxygen / hydraulic supply cable connected to the excavator main body so that the power generator is supplied with the power generated from the power generator; Wherein the waterproof sensor is installed on the left and right sides of the excavator main body and a water jet is installed in front of the excavator main body to remove turbid water, Wherein the pH sensor has a pH measurement range of 0 to 14, the EC sensor has an EC measurement range of 5 to 100,000 S / cm, and the DO sensor measures a dissolved oxygen amount The range is from 0.01 mg / L to 35.99 mg / L, and the oxygen saturation measurement range is from 0.1% to 100%.

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According to the present invention, by performing various underwater operations by utilizing various equipment such as sludge stacking equipment, stonecuttering equipment and underwater work equipment, not only the workability is greatly improved, but also the work period can be greatly shortened and the construction cost can be reduced It is effective. In addition, the underwater worker wears his / her suit at the time of underwater work. In case of an emergency, he / she can send an emergency rescue signal by radio wave signal and underwater sound signal in the water, It is possible to work more safely underwater. In addition, water workers can easily diagnose the water quality environment by providing water quality information at the same time as underwater work.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a flow chart illustrating a method of underwater operation in accordance with the present invention;
FIGS. 2 to 7 are views for explaining a method of installing and operating a silt-loading device, a silt-conveying device, and a carrier according to the present invention.
8 to 11 are diagrams for explaining a bagging equipment according to the present invention.
12 is a view for explaining a method of installing and operating an underwater work equipment according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

FIG. 1 is a flow chart for explaining a method of working underwater according to the present invention, FIGS. 2 to 7 are views for explaining a method of installing and operating a bagging equipment, FIG. 12 is a view for explaining a method of installing and operating an underwater work equipment according to the present invention.

The underwater work method according to the present invention can conveniently perform underwater planarization work by utilizing various equipment such as sludge stacking equipment, stonecuttering equipment and underwater work equipment, and can also ensure the safety of the underwater worker, And simultaneously provide water quality information that can diagnose the water quality environment in real time.

As shown in the drawing, the method of working underwater according to the present invention includes a first step of installing the siltstone loading apparatus 100, the silt conveying apparatus 110 and the transportation port 120 in order to arrange the rock A in the water A second step S120 of installing an underwater work equipment 130 for underwater operation and a second step S120 of carrying out a submerging operation using the installed sludge loading equipment 100, (S130) for disposing the underwater work equipment (A) and a fourth step (S140) for performing an underwater operation using the installed underwater work equipment (130).

Specifically, each of the above steps will be described.

1. First step (S110)

As shown in FIG. 2, a silo stacking apparatus 100 composed of a carrier line, a conveyor belt, a crane, an excavator, and the like for loading a stalactite A for use in underwater flattening work, (110) consisting of a crane including a support (111), a winch (112), a frame (113) and a hook (114) for lifting or carrying the stones And a step of installing the transportation port 120 on which the stonework A is placed at a predetermined position.

For reference, the support 111 may be formed of a barge, a jack-up barge, or a caisson in the form of a device that can float in water by buoyancy at sea. The method of horizontally moving the support table 111 can be moved by a tugboat or through a winch and a wire installed on the support table 111 and an underground anchor installed at the end of the wire.

The winch 112 is installed at the upper end of the supporting table 111 and includes components necessary for lifting or lowering the transportation port 120. In addition, the frame 113 supports the load of the wire of the winch 112, and it is preferable that the load of the delivery port 120 is dispersed by a plurality of wires including a winding device (not shown).

The transport 120 will now be described in more detail with reference to Figures 8-11.

First, the transportation port 120 is provided with a sliding gate 121, a sliding operation part 122 and a vertical operation part 123 as an upper opened shape with a certain space, And to discharge the stacked stones (A) in the lower part thereof.

At this time, it is preferable that the transportation port 120 has a rectangular shape in a plan view and has sufficient rigidity to maintain the shape even when the stones A are loaded.

The transport ports 120 may be connected to each other alone or a plurality of the transport ports 120 may be coupled to shorten the time required for flattening the stones.

The sliding gate 121 is coupled to a lower portion of the transportation port 120. The sliding door 121 discharges the stones A from a lower portion of the transportation port 120 by a sliding opening operation, And the discharged stonite (A) by a sliding closing operation.

The sliding gate 121 is operated in the horizontal direction. When the sliding gate 121 is closed, the sliding gate 121 supports the stones A loaded on the carrier 120. When the sliding gate 121 is opened downward, It is desirable to carry out the operation of discharging the stones (A) and adjusting the height of the stones (A) constantly when closed.

In addition, it is preferable that the sliding gate 121 in the transporting port 120, which is combined with the plurality of the transporting ports 120, includes manufacturing the transporting gate 120 so as to cover the plurality of transporting ports 120 at once.

Further, it is preferable that one end of the gate, which abuts against the stalactite A, is made into a shape advantageous for separating the stones in a wedge-like shape or a streamline shape during the stucco flattening operation by the closing operation of the sliding gate 121.

The sliding operation part 122 is installed on the side or bottom of the delivery port 120 and engages with the sliding gate 121 to perform opening and closing operations of the sliding gate 121 with hydraulic pressure.

Here, the sliding operation part 122 may be formed to include a hydraulic cylinder shape, and may also include a method of using the operation of a lever and a pinion (not shown).

The sliding operation part 122 is coupled to the transportation port 120 and the sliding gate 121. It is preferable that the sliding operation part 122 includes a method of joining the steel to one or more of bolt, rivet, .

The upper and lower operation parts 123 are vertically coupled to the side of the carrier 120 to lift the carrier 120 from the carrier 120 after the slag A is discharged, The gate 121 is used to match the flattening height of the stones (A).

At this time, a plurality of the upper and lower operation parts 123 may be installed inside or outside the transportation port 120, and may be formed of a steel frame (not shown) including a hydraulic cylinder.

2. Second Step (S120)

First, a power generator 131 including an engine, a fuel tank, a hydraulic pump, and a hydraulic oil tank is separated from an excavator, and then disposed in a watercraft using the ship B in a reassembled state.

The excavator main body 132 is connected to the excavator main body 132 in which the power generator 131 is disconnected and the oxygen / hydraulic power supply cable 133 is connected to receive the power generated from the power generator 131, Only submerged in the underwater floor. At this time, it is preferable to mount an object heavier than the weight of the power generator 131 to the excavator main body 132 from which the power generator 131 is detached.

Finally, a dirt prevention film is installed on the left and right sides of the excavator main body 132 to prevent the spread of dirty water. In addition, a water jet is provided in front of the excavator main body 132 to remove the turbid water, Thereby finishing the installation for the underwater work equipment 130.

For reference, as the hydraulic oil used in an excavator in the present invention, edible oil can be used to prevent environmental pollution that may be caused by an accident. In the case of cooking oil, a lot of heat is generated, but there is no big problem because it is an underwater operation.

3. Third step (S130)

First, an operator operates the installed silo loading equipment 100 to load the silo A on the transportation port 120 coupled to the hook 114 of the silo transport equipment 110.

Then, the operator operates the stover transport equipment 110 to lower the transportation port 120 to the underwater floor.

4. Fourth step (S140)

First, the underwater worker W submerges and connects the rope to the sliding gate 121 installed at the lower part of the transportation port 120 while receiving air from the submerged line C through the air supply cable 134.

The underwater worker W operates the excavator main body 132 to pull the rope to the outside of the transportation port 120 to open the sliding gate 121 to move the stones A loaded on the transportation port 120 to the outside . That is, the sliding gate 121 is opened to discharge the stones A loaded in the delivery port 120. At this time, it is preferable that the stubble height 41 in the delivery port 120 is lowered but the stubble A is still present in the delivery port 120. At this stage, the height of the sliding gate 121 is preferably lower than the flattening height of the stones (A).

On the other hand, the position and height of the carrier 120 are monitored by the metering system 140, which can adjust the level of the carrier 120 via the metering system 140. It is preferable to operate the up-and-down operation unit 123 as a method of raising the height of the delivery port 120. [ The upper and lower operation parts 123 raise the carrier 120 by stepping on the pile of stones A discharged on the bottom of the water. The position of the delivery port 120 and the sliding gate 121 is preferably monitored through the measurement system 140.

For reference, the measurement system 140 has one end mounted on the transportation port 120, the other end exposed to the water, measuring the length between the one end and the other end and the height of the other end from the reference point, It is possible to measure the position of the display unit 120.

Here, the height of the other end of the measurement system 140 is measured through a meter 141 installed at the other end, and the meter 141 is preferably formed by RTK GPS or a prism of a conventional wave meter.

The length between one end and the other end of the surveying system 140 may be any one of a fixed support having a fixed length or a method of measuring the distance by loosening and winding the wire or a superposition method using a telescopic .

Subsequently, the underwater worker W operates the excavator body 132 to pull the rope to the inside of the transportation port to close the sliding gate 131 and to leave the discharged stonework A and the transportation port 120 (A) which separates the stones.

Then, the operator operates the steler conveying equipment 110 to raise the conveying port 120 to the original position for loading the stalactite A therein.

Finally, the underwater worker W operates the excavator main body 132 to perform the planarization work on the discharged stones A.

On the other hand, the underwater worker W may be wearing a suit (not shown) capable of injecting gas through a gas supply cable (not shown) from a diver in the event of an emergency. That is, when the underwater worker W presses a predetermined button due to the occurrence of an emergency during underwater work, the gas can be promptly injected through the gas supply cable from the submerged slope and the submerged worker W can be floated on the surface of the water It is wearing a suit.

At this time, when a user presses a predetermined button after gas is injected into the sub-clothes and the submerged worker W floats on the surface of the water, an acoustic generator and a searchlight are attached to the sub- .

For reference, the sub-suit may be provided with a power supply unit constituted by a battery, a regulator or the like, or may be supplied with necessary power from a submerged line C through a power supply cable.

On the other hand, emergency apparatuses are further provided in the sub-suit to promptly store the voice and image of the worker and to transmit the emergency rescue signal in the form of a radio wave signal and an underwater sound signal to inform the position of the victim .

The emergency device comprises an operation switch for starting the operation of the personal emergency device when physically cut or broken, a controller driven by the operation of the operation switch to control to generate an emergency rescue signal by radio wave or underwater sound, An underwater acoustic module for transmitting a structural signal underwater under the control of the controller, a microphone for voice input, a camera for capturing an image, and a controller for controlling the controller And a memory unit for storing voice and images input through the microphone and the camera under the control of the control unit.

Therefore, when the worker W activates the emergency operation switch, it is possible to send the rescue signal to the radio signal or to the underwater acoustic signal. In addition, voice recording and video recording can be performed while the operation switch is operated and stored in the memory unit.

For reference, in order to prevent unnecessary operation normally, the controller controls the transmission of the emergency rescue signal when the operation switch is physically cut or broken. In case of emergency, the personal emergency device is strongly hit against another object, It is operated by cutting one end by hand.

In addition, the wireless module generates a structural signal at a V / UHF emergency frequency, and can output a modulation frequency of about 10 to 20 dB with 1 to 2 KHz intermittent sound. In the basic operation, the underwater acoustic module generates a structural signal with a modulation frequency signal of 1 KHz from the operating point to the depth of 10 m from the operating point, and sequentially increases the frequency up to a depth of 10 m to a depth of 300 m to receive a modulated frequency signal of 4 KHz Modulation control of the acoustic frequency can be performed.

On the other hand, the wireless structure signal or the underwater acoustic structure signal can be transmitted as a wireless data packet including the individual identification information, but it is possible to generate only the simple wireless signal or the underwater acoustic signal and detect the transmission position of the wireless signal and the underwater acoustic signal The rescue team can track the origination position of the rescue request signal using the detecting terminal so that the rescue team can rescue the rescue request signal quickly. Also, it is possible to acquire voice, image, and personal identification information stored in the memory unit to reproduce the personal identification, the situation coping, and the video and audio message.

On the other hand, the subassembly is provided with a water temperature sensor, a pH sensor, an electrical conductivity (EC) sensor and a DO (Dissolved) sensor for measuring water temperature, pH, electric conductivity, total dissolved solid matter, salinity, specific gravity, dissolved oxygen amount, And a calculator for converting an electrical signal measured from the sensor unit into a predetermined measurement index, and a water quality analysis center for diagnosing the water quality environment based on the measured value based on the measured value And a communication module for transmitting the measurement index in real time. Accordingly, various water quality information can be measured and provided in real time so that a worker who wears his / her suit wears underwater work, and at the same time, the water quality analysis center can diagnose the water environment in the vicinity of the work site.

For reference, the measurement indices and units, the measurement range and the accuracy of each sensor are as follows.

1. Water temperature sensor

   A. Temperature: -55 ° C to 125 ° C (+/- 0.5 ° C)

2. pH sensor

   A. pH: 0 to 14 (+/- 0.02)

3. EC sensor

   A. Electrical Conductivity (E.C.): 5 μS / cm to 100,000 μS / cm (+/- 2%)

   B. Total Dissolved Solids

   C. Salinity

   D. Specific Gravity

4. DO sensor

   A. Dissolved oxygen amount: 0.01 mg / L to 35.99 mg / L

   B. Oxygen saturation: 0.1% to 100%

The computing unit is configured to correspond to a water temperature sensor, a pH sensor, an EC sensor, and a DO sensor, respectively. The electrical signals measured from the sensor unit are converted into measurement indices determined as described above. In the conversion process, the pH calculator and the EC calculator perform temperature compensation by referring to the value of the water temperature sensor, and the DO calculator can perform temperature compensation and salinity compensation using the temperature and electric conductivity values.

As described above, according to the present invention, since the underwater planarization is conveniently performed by utilizing various equipment such as a silo storage device, a stonecuttering device, and an underwater work device, the workability is greatly improved, It is possible to reduce the construction cost.

In addition, the underwater worker wears his / her suit at the time of underwater work. In case of an emergency, he / she can send an emergency rescue signal by radio wave signal and underwater sound signal in the water, It is possible to work more safely underwater.

In addition, the underwater worker wearing the suit can provide water quality information to the water quality analysis center in real time at the same time as underwater work, so that the water quality environment can be conveniently diagnosed.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the scope of the present invention is not limited to the disclosed exemplary embodiments. Alternatives, modifications, and alterations may be made.

Therefore, the embodiments disclosed in the present invention and the accompanying drawings are intended to illustrate and not to limit the technical spirit of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments and the accompanying drawings . The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

100: Stacking equipment 110: Stacking equipment
111: support 112: winch
113: frame 114: hook
120: Carriage 121: Sliding gate
122: sliding operation part 123: vertical operation part
130: Underwater work equipment 131: Power generator
140: Surveying system

Claims (6)

In the underwater working method,
A first step of installing the silt-loading equipment 100, the silt conveying equipment 110, and the delivery port 120 in order to dispose the stones A in the water;
A second step of installing an underwater work equipment (130) for underwater work;
A third step of disposing the stones (A) in the water using the installed stonry loading equipment (100), the stonecuttering equipment (110) and the transportation port (120);
And a fourth step of performing an underwater operation using the installed underwater work equipment (130)
The third step of disposing the stones (A) in the water using the installed stonry loading equipment (100), the stonecutter equipment (110) and the transportation port (120)
Loading a stalactite (A) on a carrier (120) coupled to a hook (114) of the stonemason conveying equipment (110) by an operator operating the installed stonry loading equipment (100);
And a worker operates the stowage conveying equipment (110) to lower the delivery port (120) to the underwater floor,
The fourth step of performing an underwater operation using the installed underwater work equipment (130)
Connecting the rope to the sliding gate 121 installed at the bottom of the carrier 120 while the underwater worker W is submerged and receives air from the submerged line C through the air supply cable 134;
The underwater worker W operates the excavator main body 132 to pull the rope to the outside of the transportation port 120 to open the sliding gate 121 to discharge the stones A loaded on the transportation port 120 to the outside ;
Adjusting the level of the carrier (120) through the measurement system (140);
The underwater worker W operates the excavator main body 132 to pull the rope to the inside of the transportation port to close the sliding gate 121 and to discharge the discharged stonework A and the remaining stones A );
The operator manipulating the baggage handling equipment 110 to raise the carrier 120 to its original position for loading the baggage A;
The underwater worker W operating the excavator main body 132 to perform a planarization operation on the discharged stalactite A,
The underwater worker (W) wears a suit which can be injected with gas through the gas supply cable from the diver in the case of an emergency,
The sub-suit has a sound generator, a searchlight and an emergency device,
The emergency device comprising:
An operation switch for starting the operation of the emergency device when physically cut or broken;
A controller which is driven by the operation of the operation switch to generate an emergency rescue signal by radio wave or underwater sound;
A wireless module for transmitting an emergency rescue signal to a radio wave signal under the control of the controller;
An underwater acoustic module for receiving an underwater acoustic signal under the control of the controller;
A microphone for voice input;
A camera for capturing an image;
And a memory for storing voice and images inputted through the microphone and the camera under the control of the controller,
While the underwater worker W operates the excavator main body 132 to perform the planarization work on the discharged stonework A, during the operation switch operation, the structure signal is transmitted to the radio wave signal or the underwater acoustic signal, The image can be captured and stored in the memory unit. When an underwater worker (W) is raised above the water surface by gas injection into the clothes through the gas supply cable in accordance with an emergency situation, However,
The sub-suit includes a sensor unit including a water temperature sensor, a pH sensor, an EC sensor and a DO sensor for measuring water temperature, pH, electrical conductivity, total dissolved solid matter, salinity, specific gravity of sea water, dissolved oxygen amount and oxygen saturation, the pH sensor, the EC sensor, and the DO sensor, respectively, to convert the electrical signals measured from the sensor unit into predetermined measurement indices. In the conversion process, the pH calculator and the EC calculator corresponding to the pH sensor and the EC sensor, respectively, And the DO operator corresponding to the DO sensor includes a sensor module having an operator for performing temperature compensation and salinity compensation using temperature and electrical conductivity values;
And a communication module for transmitting a measurement index to a water quality analysis center for diagnosing the water quality environment on the basis of the measured value based on the measured value,
Various water quality information is measured in the water quality analysis center so that the underwater worker W can operate the excavator main body 132 to diagnose the water environment in the vicinity of the work site while performing the planarization work on the discharged stones A, And the water is supplied to the water tank. The method according to claim 1,
In the second step of installing the underwater work equipment 130 for the underwater operation,
Disassembling the power generating device 131 from the excavator and disposing it in the watercraft by using the ship B;
The excavator main body 132 is connected to the excavator main body 132 in a state where the power generator 131 is connected to the separated excavator main body 132 so that the power generated from the power generator 131 can be supplied. Flooding the underwater floor;
A dirt prevention film is installed on the left and right sides of the excavator main body 132 and a water jet is installed in front of the excavator main body 132 to remove turbid water to complete the installation of the underwater work equipment 130 ,
The temperature sensor has a temperature measurement range of -55 ° C to 125 ° C,
The pH sensor has a pH measurement range of 0 to 14,
The EC sensor has an electric conductivity (EC) measuring range of 5 占 / / cm to 100,000 占 / / cm,
Wherein the DO sensor has a dissolved oxygen measurement range of 0.01 mg / L to 35.99 mg / L and an oxygen saturation measurement range of 0.1% to 100%. delete delete delete delete

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