Safety technical measures for belt laying along th

2022-10-03
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Safety technical measures for belt laying along the transportation trough

this project is the * * * * 201 belt laying along the transportation trough. In order to ensure the construction quality, construction period and safety, this method is specially adopted and needs to be strictly implemented during the construction

2. Construction time and rest organization:

from April 6, 2016 to the end of the project

construction unit:

construction person in charge:

technical person in charge:

Enron person in charge:

3. Construction content:

201 transportation trough dsj140/250/4 400 belt machine is 1600 meters long, the development device pvg2500 s belt is 3300 meters, the method Lane device is 1 jd-19 winch, and the auxiliary transportation lane device is 1 jd-19 winch. Stop the belt exhibition.Put

4. Construction preparation:

1. Technology preparation

before the commencement, organize all construction staff to seriously learn the construction methods and safety precautions, lay out the construction contents in detail, and have the technology staff take the construction staff to the site to investigate, analyze and discuss the terrain, so as to make everyone feel rare and do a good job in the preparation task before the construction

2. Equipment preparation

do a good job in the preparation of construction tools and instruments, prepare all tools and instruments, and send special personnel to stop completely checking and repairing all tools and instruments. All defective tools and instruments shall not be put into use. Reviewer:

must ensure the integrity of construction tools and instruments

the main tools used are: 4 5T chain hoists Φ 18.5 steel wire rope, wrench, cheap anti running belt splint, 2 sets of voice signals (3 mining explosion-proof interphones, 1 mining intrinsically safe combined public address telephone set at 100m), 1 buckle machine, 34 belt buckles

5. Winch and steel wire rope checking calculation:

jsdb-19 winch is selected, with a traction force of kn and a rope capacity of 300m; Take 6 Type 5 wire rope promotion

the steel wire rope is checked and calculated according to the maximum lifting load:

1. The main technical parameters of the lifting equipment:

jsdb-19 Winch:

traction force: 190kn, rope diameter: 18.5mm, motor power: 45kw

overall size (length, height and width); 3845 1315 1255mm

6 . Type 5 lifting wire rope:

nominal tensile strength: 1670mpa total breaking force: 214kN

actual component: 1.22kg/m

2. Jsdb-16 winch is adopted, with a traction force of 190kn and a rope capacity of 300m; Take 6 Type 5 wire rope promotion

to sum up: maximum traction force f= (g1+g2) GSIN α+ F1+f2

= (35000+854) 9.8 sin10 +6755.73+1648.40=23.07kn

winch promotion ability check calculation

190kn> F =23.07kn, that is, the winch traction is greater than the maximum pull of single hook promotion, and jsdb-19 winch meets the promotion requirements

wire rope Enron coefficient: m=214 23.07=9.28 > 6.5, wire rope meets the needs of promoting Enron

6. Construction step

belt laying sequence: the first step is to lay out the 700 meter belt below the lane

the second step is to lay out the 200 meter belt at the head section of the machine

the third step is to lay out the 700 meter belt at the middle section of the lane

the first step is to lay out the 700 meter belt below the lane:

1. The safety supervision staff stops safely checking the top plate above the lifting belt by knocking on the side and asking the top thing to confirm that it is safe

2. Take measures in the middle of the belt roll φ 108 15mm steel pipes are used as rotating shafts, and then four are set φ 20 2300mm anchor rod is used as the hanging fulcrum, and two 5T double full chain hoists and 18.5mm rope sleeves are used to connect the belt rotation and hanging fulcrum, so as to hang the belt

3. Use jd-19 winch set in 42101 method lane. After the first belt is stretched, use (16 # channel steel of 1.8m, 28 140mm bolts at both ends

reviewer:

special plywood) to clamp the two ends of the belt firmly. Use 18.5mm steel wire to let the testing machine stretch the metal tension sample at the speed specified in gbt228 standard, and the tensile strength, yield strength and elongation rope is firmly fixed on the common anchor bolt set on the roadway floor, After the first belt and the second belt are fastened firmly, loosen the slider and continue to stop the second belt from spreading. By analogy, the belt 700 meters below the lane is released

the second step is to spread the 200m belt at the head of the machine

1. The tape placing at the machine head is the same as the first step. The tape threading at the machine head adopts the target of reverse marking of steel wire rope to surround the entangled drum. Before towing, confirm whether the accelerator is connected with the drum coupling, and towing is strictly prohibited when connecting

the third step is to release the 700 meter belt in the middle section

with simple structure

1. Hang the belt under the active winding assembly, and pass one end of the belt through the middle of the active clamping assembly. Before releasing the belt, keep the hydraulic assembly open to prevent belt running. Adjust the assembly gap of the active clamping to the minimum value that the belt can pass if the fault problem cannot be solved

2. Operate the turning head to slide to the target of lane 201 to spread the belt. When unfolding the belt, use splints at both ends of the belt as above, and use 18.5mm steel wire rope to fix the splints on the belt rack. After the splints are fixed, loosen the slider and buckle the second belt, and continue to stop the unfolding of the second belt, and so on. Unfold the belt to the two belts at Lane 201 for discussion

unfold the lower belt and then the upper belt in sequence until the belt is released. After the belt is released, tell the staff to evacuate around the belt, tell the belt driver, start the tensioning winch, adjust the belt to excessive, cut off the power and lock it, and the inspector shall pad the uneven place of the belt frame with a wooden board to ensure that the concave convex of the belt frame is in place

7. Enron technical measures

2. Strictly implement the "knock on the side and ask for the top" system. When the construction staff enter the work site, they should first check the support environment within the scope of the work, knock on the side and ask for the top with long handles, remove the dangerous rocks and live stones, and clean the front for normal construction work

3. When drilling, no one is allowed to stand in front of the pneumatic drill. The cuffs of the drilling crew and driller's clothes should be tied tightly and the buttons of the task clothes should be fastened; After the drill bit is fixed, the drill bit operator should immediately withdraw to the front of the pneumatic drill side. The position and concave convex of pneumatic drill and anchor bolt machine shall be adjusted according to the drilling angle. When drilling, the floormen should stand on the side of the pneumatic drill. It is strictly forbidden to clamp the drilling leg with two legs, or hold the pneumatic drill leg and anchor rod with their hands. They should only hold the handle of the pneumatic drill and anchor rod machine with their skillful hands. During the drilling process, they should not swing up and down too much to prevent the broken drill from hurting people; The force should be even and appropriate to prevent clamping. When the pneumatic drill and anchor bolt machine are replaced and the drill pipe is continued, the Feng Shui valve shall be closed. The floormen and the staff who change the drill pipe should coordinate together to prevent the sudden rise and fall of the drilling rig from hurting people

4. The safety coefficient of steel wire rope, rope buckle, chain block, etc. used in the construction process should meet the lifting requirements. Before use, it must be checked to confirm that it is reliable and can be used in front; The selection of chain block is strictly prohibited from overload lifting

5. When lifting, it is strictly forbidden to stand under the belt and the target of the moving target, so as to prevent people from being injured by the swing or sliding of the belt. When lifting, it should rise evenly, not too fast or too hard. When the belt must stay empty, it must hang the small chain on the big chain

6. The fixing force of the anchor rod shall not be less than 110kN, so as to prevent the use of the supporting anchor rod to stop the lifting, and the lifting wire rope shall be selected Φ 18.5mm new steel wire rope

7. When the jd-19 pillar retracting winch is towing, it is strictly forbidden to have people related to the task in the roadway, and special personnel shall stand guard at both ends. The staff on guard shall not be disqualified from their duties, and no one is allowed to enter the roadway. At the same time, it also has high conductivity

reviewer:

tasks must be approved by a specially assigned person. It is hoped that Party A can reconcile that there is no external construction team to carry out work during the belt release period, and inform it at the same time

8. When operating the winch for towing, the connection between the sliding head and the belt must be stable. The belt is discussed with the help of a 1.8m 16# channel steel with 28 140mm bolts at both ends to clamp the belt head, and then lock the sliding head with the help of 5t D-type shackle. The swivel slip is 98kn type and has no missing locking assembly. The firm style and utilization style of the rope return sheave shall strictly comply with the regulations of this office

9. When towing, the winch driver and the construction staff in the belt way take two sets of signals to communicate; The first set: signal bell contact, signal regulations: one sound parking, two sound pulling, three sound loosening, four sound asking for a car, five sound disturbance, six sound pedestrian, seven sound elimination. The second set: three mine interphones, one at each end and one in the middle, as the second set of signals; Only when the two sets of signals clearly differ can we start

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