Discussion on safety technical measures for laying two high-voltage cables in main inclined shaft?

1. Construction time: August 26th-the end of this month.

Second, the construction unit: electromechanical team

Three. Person in charge of safety: Su

Person in charge of construction: He Jianshe

Technical Director: Du Wengang

Four, the preparation work before construction:

1. Before construction, four sets of MyJV-3x185-10kv cables with lengths of 650m and 700m respectively must be safely transported to the wellhead of the main inclined shaft;

2. Before construction, the cable tray must be processed in place for the next cable;

3, before the cable into the well, there must be someone who's in charge of checking the route according to the cable laying route, to ensure that the fork is complete and the road is smooth;

4. There are two flatbed cars welded with I-beams respectively (two 2m I-beams are welded at both ends of each car, and two 8-point welded pipes not exceeding 2m are welded on the two I-beams);

5, please cable manufacturers to participate in the guidance work.

Verb (abbreviation of verb) construction scheme:

1, cable laying from inclined bottom hole to west 2 # substation

(a) all construction personnel must obey the unified arrangement of the construction director, and shall not go their own way. There are 70 construction workers, divided into three groups: the ground group is equipped with a squad leader, who is responsible for transporting the cable safely and completely to the bottom of the well. There are two groups of 20 people in each group, each group is equipped with a monitor, and each group is responsible for laying 320m cables. The rest 10 are floating personnel.

(2) The cable * * * is 650 m long, and the ground team will cooperate with the crane to lay the cable tray on the cable rack prepared in advance.

(3) After the cable laying, the ground team is responsible for arranging the cable on two flatbed cars according to the O-shape. Six of them are responsible for cable transfer and cable laying. 10 person is responsible for winding the cable on two flatbed cars in an "O" shape, and the other two people are responsible for binding the cable with 12 # iron wire to prevent slippage.

(4) When the cable drum reaches 320m, cut off the cable drum and run it into the well twice.

(5) When the cable goes down the well, the winch speed shall not exceed 0.5m/s..

(6) After the cable goes down the well, the underground group is responsible for pushing two flatbed cars to the bottom of the well.

(7) One of the two underground teams unloaded the 320m cable from the flatbed car and put it on the car prepared in advance (the other team stood by and waited for another 330m cable to go down the well). Two people are responsible for unpacking the bundled wires, and the rest are divided into two groups: one group is responsible for unloading the cables from the flatbed car, and the other group is responsible for winding the unloaded cables around the car.

(8) After the cable is installed, it will be transported to the western substation by car. After a certain number of cables are left in the substation, cables will be laid from the west substation along the 2 # Shimen to the inclined shaft until 320 meters of cables are laid.

(9) The construction scheme of another 330m cable is the same as that of the original 320m cable, except that the distance between the cable and the original 320m cable is sufficient.

(10) The head distance of cables in the substation is 2.5m, and the connection distance between two cables is1.5m..

2. Cable laying in inclined shaft

(1) The cable * * * is 700 meters long. Use the crane of the ground group to place the cable tray on the cable rack prepared in advance.

(2) After the cable is sheathed, the ground team is responsible for fixing the cable head on the hook of the wire rope with 12 # wire. When fixing, use clips and rubber pads to fix the cable and wire rope within 2m of the hook head (the fixed cable head can only be linked to the mine car after being checked by the construction director).

(3) People in the ground group 10 are responsible for rotating cable reels and laying cables, and the rest are bound with 4 minutes of hemp rope every 10m.

(4) The cable is lowered into the well, and after leaving the first 320m cable head a sufficient distance, two groups in the well begin to turn the cable from the west side of the belt to the east side of the belt and start to hang it. Among them, 20 people are responsible for cable transfer and 20 people are responsible for cable hanging. The hemp rope for current can be temporarily tied to the belt frame to prevent slipping. (If it is a canopy cable, it must be turned over from the top of the canopy)

(5) When hoisting to the wellhead of inclined shaft, put the remaining cable reels into the belt machine room (cables cannot affect the blanking of inclined shaft).

Security measures of intransitive verbs

1. During the construction period, obey the command of the person in charge of the construction, and no other personnel shall give orders without authorization.

2. The person in charge of safety shall be fully responsible for the safety work and stop any illegal acts.

3. Each group leader is the site safety director of this group and is responsible for the overall safety work of this group.

4, winch, inoue, bell man and other post personnel, to stick to their posts, obey the command of the construction director, the signal is not clear are not allowed to drive.

5, lifting cable tray, it is forbidden to stand under the cable tray, crane. No one is allowed to command the crane except the person in charge of construction and the crane driver.

6. The connection between the flat car and the hook head must be checked by the construction director, and the well can be lowered only after it is confirmed to be complete and correct.

7, cable, belt should stop running, winch speed shall not exceed 0.5 m/s. ..

8. When the cable goes down the well, the bell man at the bottom of the well is responsible for the safety at the bottom of the well, and no one is allowed to walk around the bottom of the well.

9. Cable supports for installing cables must have reliable stability.

10, the cable must be tied to the wire rope every 10m to avoid wearing the cable.

1 1. I-beams and welded pipes on two flatbed cars must be welded firmly and reliably.

12. When people stand on the belt, they must always pay attention to the safety of themselves and others, and the orders at work are the same.

13. The steel wire rope in the inclined shaft cannot be completely separated from the steel wire rope to prevent the steel wire rope from slipping.

14, anyone has the right to stop any illegal behavior in the construction process.

15. The security department shall send at least two safety inspectors to participate in the whole construction process and be responsible for safety work.

16, dispatch room sent two dispatchers, divided into inoue and downlink dispatchers to coordinate their work.

17. Matters not covered in this safety technical measure shall be implemented according to three major regulations.

18. All construction personnel must learn this safety technical measure and sign it, otherwise they may not take part in this project.

For more information about project/service/procurement bidding, and to improve the winning rate, please click on the bottom of official website Customer Service for free consultation:/#/? source=bdzd