Introduction of safety technical disclosure of high-pressure jet grouting pile construction project?

safety technical disclosure of high-pressure jet grouting pile? The following Zhongda Consulting brings the specific contents about the safety technical disclosure of high-pressure jet grouting pile for your reference.

the site power consumption for safety technical disclosure of high-pressure jet grouting pile must strictly comply with the requirements of Technical Specification for Safety of Temporary Power Consumption on Construction Site (JGJ 46-25); Must be adopted: TN-S zero protection system is adopted; Three-level distribution and two-level protection system (main distribution box-distribution box-switch box-electrical equipment). Establish a responsibility system for production safety at all levels and positions, horizontally to the edge and vertically to the end; The full-time safety officer of the construction team shall supervise and supervise the key parts and important working procedures throughout the whole process, and it is forbidden to command or operate illegally! Operators of special types of work must be trained and qualified before they can take up their posts.

Operators entering the construction operation site must wear personal safety protection articles, such as safety helmet, safety belt, warning suit, life jacket, insulating gloves, insulating rubber boots, etc. Barefoot or slippers are strictly prohibited.

1. Safety measures on the construction site

1. Before the construction of high-pressure jet grouting pile, investigate the original structures and underground pipelines in the adjacent construction scope. For influential projects, effective reinforcement and protection measures or isolation measures should be taken, and observation should be strengthened during construction to ensure construction safety.

2. Before construction, comprehensively check all parts of the machinery and lubrication conditions, and solve any problems in time if found. After inspection, carry out trial operation, and it is forbidden to work in spite of illness. The piling machine equipment should be operated by special personnel, and the frame part should be regularly checked for desoldering and bolt looseness. Pay attention to the operation of the machine and strengthen the maintenance of the machine to ensure the normal use of the machine.

3. The frame of the pile driver shall be laid stably and firmly to prevent the drilling tools from falling suddenly, causing personal injury and equipment damage.

4. On-site operators should wear safety helmets, wear safety belts when working at heights, and overhaul the piling machine at high altitude, and do not throw objects down. People with heart disease and hypertension are not allowed to work at height.

5. Sufficient lighting facilities should be provided for construction at night, and construction work should be stopped in rainy days, strong winds and foggy days.

6. Conduct comprehensive safety education for all personnel engaged in management and production, establish the idea of "safety first, prevention first", improve the consciousness of employees to observe construction safety discipline, and conscientiously implement safety operation procedures.

7. During the construction period, keep the roads smooth, and set up safety defense facilities and safety warning signs at dangerous places such as holes, pits, ditches and wellhead on the construction site.

8. The fire-fighting equipment on the construction site should be managed by special personnel, and it is not allowed to take it around.

9. The construction site shall be equipped with complete and effective safety facilities, and shall not be dismantled or moved without authorization. When it is determined that it needs to be moved due to construction, corresponding temporary safety measures shall be taken.

1. The stacking of various materials at the site shall not exceed the specified height. The construction site shall be clearly divided into fire operation areas, flammable and combustible material yards, warehouses, flammable waste concentration points, etc., and eye-catching fire prevention signs shall be posted.

11. During the construction of jet grouting pile, each pile driver must ensure that there is more than one person to monitor the construction safety of pile drivers.

12. Pay special attention to the safety protection measures for working under high-voltage lines in rainy days to prevent electric shock accidents under heavy rain. Second, the high-pressure jet grouting pile machine safety operation procedures

1. There should be no high-voltage lines in the pile machine operation area, and there should be obvious signs and fences in the operation area.

2. The crew members must wear seat belts when checking and maintaining climbing. Tools and other objects should be placed in the tool kit, and aerial workers are not allowed to throw them down at will.

3. The distance between the work site and the power transformer or the main power supply line should be within 2m, and the voltage rise and fall during startup should not exceed 1% of the rated voltage.

4. The motor and control box should have good grounding devices.

5. The pile driver should be placed stably and firmly, and the drill pipe should be adjusted vertically by automatic fine adjustment or line hammer.

6. Before starting, check and confirm that all parts of the pile driver are firmly connected, the tightness of the conveyor belt is appropriate, and the oil level in the reducer meets the requirements. 7. Before starting, put the joystick in the neutral position. After starting, run the test in short, check the instrument, temperature, sound, braking and other work, and then operate normally.

8. When starting the machine, slurry should be delivered before spudding; When stopping, stop the slurry first and then stop drilling. The mud pump should be attended by special personnel, and the mud quality and slurry surface height should be measured and adjusted at any time to ensure the proper concentration. When drilling is stopped, slurry leakage should be replenished in time. And should clean up the debris in the sedimentation tank at any time to keep the mud pure.

9. During the construction of the pile driver, observe the operation of the pile driver at any time. When an abnormal situation occurs, stop the machine immediately for inspection, and then continue the construction after troubleshooting.

1, before grouting, should check the high-voltage equipment and management system, sealing ring must be in good condition, each pipe and nozzle can not have sundry.

11. The pressure of air compressor, high-pressure water pump and slurry delivery pump and the speed of lifting pipe and spraying slurry should be controlled during pile driving.

12. When spraying near the ground, the pressure and flow should be controlled to prevent injury.

13. When cleaning machines and tools after operation, the nozzle is strictly forbidden to people.

14. The shifting and dismantling of the piling machine shall be carried out in accordance with the provisions of the mechanical manual. During the shifting and dismantling, collision with the frame shall be prevented. 15. In case of severe weather such as thunderstorm, fog and gale above level 6, all operations should be stopped.

III. Safety operation procedures of the water mud pump

1. The water mud pump shall be installed on a stable foundation frame and shall not be loose.

2. Before starting, the inspection items shall meet the following requirements:

1) All connecting parts are firm;

2) The motor rotates in the right direction;

3) The clutch is flexible and reliable;

4) The pipeline connection is firm, the seal is reliable, and the bottom valve is flexible and effective.

3. Before starting, the suction pipe, bottom valve and pump body should be filled with water, and the upper end of pressure gauge buffer should be filled with oil.

4. Before starting, make the piston reciprocate twice, and start with no load when there is no obstacle. After start-up, the load should be gradually increased after normal operation.

5. No speed change is allowed during operation; When shifting is needed, stop the pump to shift gears.

6. During operation, when there is abnormal sound or abnormal water quantity and pressure, or there is obvious high temperature, the pump should be stopped for inspection.

7. When it is stopped for a long time, the mud, sand and grease in all parts should be cleaned, and the lubricating oil in the crankcase should be drained, and anti-rust and anti-corrosion measures should be taken. Iv. temporary electricity utilization on the construction site

1. the temporary electricity utilization on the construction site shall be strictly implemented in accordance with the technical specification for safety of temporary electricity utilization on the construction site.

2. The temporary power lines shall be connected in "tn-s" mode, and the neutral connection or grounding protection shall be done well.

3. The installation, maintenance and dismantling of temporary power lines shall be completed by electricians with work licenses.

4. One brake and one leakage shall be implemented, and it is forbidden to have more than one brake.

5. All distribution boxes and header boxes must have doors, locks and rainproof measures.

6. The switch box must be equipped with a leakage protection switch that meets the requirements. 7. All wires and cables used must not have peeling and exposed cores, which are easy to cause leakage.

8. Rubber cables should be used for power supply lines of mobile electrical equipment. When crossing the carriageway, they should be laid through pipes. No electricity should be used for damaged cables.

9. When overhauling electrical equipment, the power supply box or switch box should be powered off, and a warning sign saying "It is forbidden to switch on" should be hung on the handle of the power supply box or switch box, or a special person should be assigned to take care of it.

1. Lighting lamps should have protective covers; The handle of the traveling lamp should be well insulated, heat-resistant and moisture-proof; The traveling lamp transformer must be of double-group type. 11, lighting lamps and lanterns and flammable materials, should keep a safe distance; When the distance is not enough, heat insulation measures should be taken.

V. Safety technical measures for construction machinery

1. All kinds of mechanical operators and vehicle drivers must be familiar with operation technology and strictly abide by safety operation procedures, and establish files for mechanical operators and manage them by special personnel.

2. The operator shall strictly implement the operation regulations of this machine, and strictly implement the inspection before work, observation during work and inspection and maintenance system after work.

3. It is forbidden to repair, maintain and adjust the running mechanical equipment.

4. Operators who command construction machinery should stand in a safe place where people can watch and use clearly defined command contact signals. 5, organize regular mechanical and electrical equipment, vehicle safety inspection, to find out the safety problems in the inspection.

6. The piling machine must be operated by special personnel, and the (clutch) brake, steel wire rope and safety hook must meet the requirements of the specification. When the maintenance personnel enter the maintenance, they must cut off the power supply, lock the switch and supervise by designated personnel.

VI. Construction arrangement in rainy season and flood season

1. According to the overall arrangement and the actual situation on site, before the rainy season comes, further determine the rainy season construction area, and prepare the rainy season construction plan and report it to the supervision engineer for examination and approval.

2, in the process of construction, to strengthen the drainage work of construction face.

3. Lightning arresters should be installed for pile drivers in thunderstorm season. When lightning strikes, people must stay away from the pile driver.

4. In case of severe weather, such as heavy rain, snow, fog, and strong wind above level 6, the operation should be stopped. When the wind speed exceeds level 7 or there is a strong typhoon warning, the pile driver should be stopped downwind, and the cable wind rope should be added. If necessary, the pile frame should be placed on the ground.

Supplementary contents:

1. The rotating parts of the slurry pump of the pile driver should be isolated by protective devices.

2, the tower must wear a seat belt, and there is someone who is responsible for the command and maintenance.

3. Safety helmet must be worn when going to work, pulping personnel should wear dust masks, and pile driver operators must wear rain boots, and must not go shirtless, wear shorts and go to work barefoot

4. Strengthen the management of fire in the construction site, and do not use fire without approval.

5. Strengthen safety warning and safety facilities on the construction site. All kinds of safety slogans and safety warnings should be serious and eye-catching, such as wearing safety helmet when entering the construction site, forbidden to enter the construction site, and wearing safety belts when working high above the ground.

6. When the drilling rig moves, there must be a special person to command it. The anchor pile must be safe and reliable, and it is not allowed to be dragged by force to prevent the rig from toppling.

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