Construction Safety and Blasting Operation Requirements

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I. Construction Blasting Operation Requirements

1. According to the pre-designed blasting plan, it is required to knock out and crush the rock, to avoid under-excavation or over-excavation, and to protect the surrounding rock of the project to ensure the stability of the roadbed foundation;

2 , blasting block to be more uniform, large block rate should be low, block size grading should be appropriate to reduce the amount of secondary crushing work;

3 , blasting reactors should be more concentrated to improve the efficiency of shoveling;

4 To improve the utilization of explosive energy, the unit cost of explosives is small, and the cost of blasting is reduced;

5. Guarantee blasting operations and environmental safety, limit blasting hazards such as blasting earthquakes, air shock waves, individual flying stones, toxic gases, noise and dust to within the allowable range.

Second, safety requirements for construction

1. The installation personnel shall carry out certificates, wear work clothes, wear safety helmets, protective gloves, and other protective articles such as seat belts .

2. When lifting the crane, the crane is lifted by a professional lifting crane. When lifting the crane , a crane with sufficient lifting capacity is selected according to the weight of the crane . The crane must be equipped with a command post and a command flag to ensure that the signal is accurate.

3. When lifting, the personnel pulling the traction rope should be kept away from the heavy object to prevent it from falling and endangering personal safety.

4. The steel wire rope used in hoisting can't have the phenomenon of broken wire, kinks, broken strands, rope core extrusion, etc., choose the diameter of the steel wire rope according to the weight of the weight, so that it has sufficient strength to bear the weight of the weight.

5. Persons who install track slides must have complete safety protection facilities. They can only install the seat belts after they have fastened their seat belts. If they cannot use seat belts, a safety net or work bench should be set up under the work station to prevent accidental fall.

6. When using a ladder, choose a ladder that is not cracked or damaged. The upper part of the ladder must be fixed before the person can work.

Third, the construction program

1, crane installation

1) Check the contract text and random documents, check the crane, lifting capacity, span, lifting height, working system, and motor compliance. Check that the cables, wires, appliances, and motors match the crane.

2 ) The crane is pre-assembled and the parts start to connect. After assembly, four wheel diagonals were measured and the span was measured. Check whether the connecting bolts are firm and reliable, whether there are any welding hidden troubles in each welding spot, and whether the devices in each part are reasonable.

3 ) The crane line starts to be erected, electrical equipment is installed, and the safety switch is sensitive.

4 ) Lubrication points shall be added with lubricating oil (grease), and the bridge shall be powered by the physiology machine. After the inspection of the various parts of the electrical equipment is correct, it shall be lifted.

2, crane lifting

1 ) The hoisting of the crane does not need to be carried by a wheeled truck crane. The steel wire rope is fixed to the hoisting hook of the crane from the hoisting hole of the traffic. The electric hoist is moved to the middle of the traffic to balance the two ends of the traffic. Then, the electric cable is used to drive the electric motor. The gourd is fixed firmly to prevent the sudden movement of the electric hoist in the hoisting process. Traction ropes are set at both ends of the vehicle to prevent the vehicle from swinging during the lifting process and realize the steering of the vehicle.

2 ) Lifting. The traffic is hoisted in the direction of the track. When the vehicle rises above the track surface, the vehicle is rotated under the action of the traction guide rope so that the four wheels of the road are above the track and then land on the track smoothly.

3, crane track slide installation

1 ) Measure the level and span of the traffic beam to meet the regulations.

2 ) Adjust the level and span of the traffic beam until it meets the requirements, then start the track laying.

3 ) After completing the track laying, check the height of the track joints, whether the clearance is excessive and whether the joint bolts are firm. Check whether the level and span of the track are consistent.

4 ) After the track installation is completed, the trolley wire is installed. The trolley wire should be kept horizontal. The entire slide wire should be straight and the bolts at the slide wire joint should be tightly tightened to prevent poor contact.

5 ) Install the three-color indicator light on the end of the trolley wire.

The information in this article comes from the Internet and was reorganized and edited by China Rescue Equipment Network.

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