First, the excavation

(1) Safety procedures for tunneling operations

1. All excavation projects must have design, and the construction unit must strictly follow the design requirements to prevent undesigned verbal agreements.

2. The engineering design and construction notice must include the geological profile, construction purpose, construction unit, construction requirements and safety measures. Major projects must be written in safety, and safety measures must be serious, detailed, and specific.

3. The engineering design must be reviewed, signed, and reported to the construction unit, the deputy mine manager, the security department, and the biotechnology department for storage.

4. After receiving the design, the construction unit must make careful arrangements, and explain the technical requirements and safety requirements to the rock driller and the skimmer, and arrange it on the spot.

5. Before the operation, first check the safety status of the work area. If there are unsafe factors, it must be processed first. Otherwise, it is not allowed to work. The geological conditions of the work site, pumice treatment, support conditions, pipe and line erection should be checked in detail. Ventilation, etc.

6. The rock driller should strictly follow the design of the eye, the charge, the broken section, the roof and the side state should be smooth blasting to reduce the damage of the rock mass and increase the safety strength. The best roof of the tunneling face is a three-heart arch type.

7. It is strictly forbidden to dry the eyes in the rock drilling work. It is strictly forbidden to use the open fire single-point gun. It is strictly forbidden to use the eye and the blind cannon. It is strictly forbidden to charge the rock while drilling.

8. The rock drilling face of the excavation face must strictly abide by the blasting safety regulations and the post safety operation rules. It is strictly forbidden to operate illegally. When the gun is fired, the adjacent working surface must be notified, and the warning should be set according to the regulations. Only after the confirmation is correct, the warning can be removed.

9. After the blaster releases the gun, it must be done.

10. When the skimmer is in front of the operation, the lighting must be connected first, the ventilation of the working surface should be checked, and the risky operation is strictly prohibited; the drywork of the working surface is strictly prohibited.

11. The skimmer must carry out the risk-removal and knock-out of the state. When the fire-fighting is required, it must be operated by two people. One person is lighting and guarded. One person is in danger, and single-person insurance is strictly forbidden. You must choose a safe place when you are in danger, and it is strictly forbidden to work with pumice.

12. The working surface must be cleaned of pumice, and the ditches should be cleared as required. After the work is finished, the hygiene of the work surface must be cleaned up and the lights are extinguished.

13. If a support location is needed, the support worker must be notified in time for support.

14. It is strictly forbidden to use high-pressure air for ventilation in the tunneling face. The local fan must be well managed and used well.

15. The excavation surface must be in good condition for wind, water and pipe line, and hung neatly.

16. A safe working platform must be set up during the tunneling, and the operator must fasten the belt.

(II), excavation project management standards

1. The roadway project should implement the support measures, and timely use the supporting means such as wood, anchor cable, anchor bolt, anchor net, shotcrete and steel frame to ensure the safety factor of the construction project.

2. When the tunnel is drilled to 7m, a safe working platform should be set up. The safe working platform should not exceed 2.5m from the working surface of the patio; the pedestrian and slag must be separated.

3, the working surface lighting is good, the lamp line is set up, the lamp power is 100W, the lamp distance is no more than 15 meters, no clear wire head, it is strictly prohibited to hang up.

4. The erection of various cables and wind pipes meets the requirements. It is forbidden to mix cables and wind pipes. Cables should not be placed in water (especially at joints); cables should be coiled up in time after parking.

5. The through-project must notify the relevant personnel before the penetration (not less than 10 meters) and set the warning; when the two intersecting working faces are separated by 15 meters, one of the working faces must stop working.

6. The labor insurance products of the four major types of workers are fully worn and work according to the specifications.

7. Temporary storage and use of blasting items are in compliance with safety technical operating procedures.

8. The anti-falling measures for the chute are in place, and the grid, guardrail, sign and lighting are fully equipped. The height of the guardrail is 1.05-1.2M (the height of the special section is increased), the grid is not more than 38×50CM2, the distance between the centerlines of the two parallel rails of the grid is not more than 40CM, and the welding is firm.

9, electrical welding and other equipment in accordance with technical operating procedures, protective measures should be in place, labor insurance supplies are fully worn.

Second, the diverticulum operation safety procedures

1. All excavation projects must have design, and the construction unit must strictly follow the design requirements to prevent undesigned verbal agreements.

2. The engineering design and construction notice must include the geological profile, construction purpose, construction unit, construction requirements and safety measures. Major projects must be written in safety, and safety measures must be serious, detailed, and specific.

3. The engineering design must be reviewed, signed, and reported to the construction unit, the deputy mine manager, the security department, and the biotechnology department for storage.

4. After receiving the design, the construction unit must make careful arrangements, and explain the technical requirements and safety requirements to the rock driller and the skimmer, and arrange it on the spot.

5. The rock driller should strictly follow the design of the eye, the charge, the broken section, the roof and the side state should be smooth blasting to reduce the damage of the rock mass and increase the safety strength. The best roof of the tunneling face is a three-heart arch type.

6. It is strictly forbidden to dry the eyes in the rock drilling work. It is strictly forbidden to use the open fire single-point gun. It is strictly forbidden to kill the eye and carry the blind cannon. It is strictly forbidden to load the rock while drilling.

7. Implement the control blasting roof protection technology to ensure the quality of the project. The roof is flat and arched, no pumice stone, and it is strictly forbidden to carry pumice.

8. After the skimmers and the fire-fighting support workers enter the diverticulum, they must first illuminate the lighting. The distance between the lamps must not exceed 8 meters, the power of the bulbs should be 100W, and the lights should not have a clear line. Check ventilation and top and bottom conditions and do not allow for risky work. Before the operation, the first risk (the diverticulum discharge tool is fully equipped (one long, one short) and the quality meets the standard). It is forbidden to bring dangerous and dry outfits, and it is forbidden for single-player and single-person insurance.

9. The fire-fighting support workers must make a mark on the broken or unresolved pumice stone. If it is necessary to blast and hit the anchor rod, the rock driller must be informed to open the eye in time and install the bolt or blast. If wood support is required locally, it must be supported immediately and ensured to be firm and reliable. Warning signs should be set or blocked in hazardous areas.

10. The operator must enter and exit the work surface according to the prescribed route, and bring personal lighting tools. It is strictly forbidden to rest on the work surface. If an abnormality is found during the operation, it should be immediately evacuated to a safe place and reported to the relevant leaders of the workshop.

11. Strengthen support management and determine reasonable support plans based on site conditions to ensure safety and reliability.

Third, the safety procedures for stope operations:

1. There must be more than two safety exits in the stope, and connect the upper and lower middle roadways. The support for the safety exit must be strong, and there are ladders. The pedestrian wells must be smooth, and the ventilation shafts must be unblocked. There must be ladders in the middle section of the patio. Big rope.

2. There is good lighting in the stope.

3. During the construction of the project, the construction of the pedestrian well and its contact road must be carried out first in order to create a good ventilation condition. When the pedestrian well is arranged in the vein, it is strictly forbidden to blast the mine.

4. Perform smooth blasting on the roof of the stope, and arrange the blastholes evenly to ensure the flatness of the roof.

5, the height of the control yard is not more than 3 meters, the roof management personnel to strengthen the responsibility of work, timely release of the top pumice.

6. Strictly follow the design and on-site command construction.

7. It is strictly forbidden for personnel to enter the stope from the gun head.

8. For the unstable sections, it is necessary to take timely support of wood support, bolt support and bolt net.

9. The soft and unstable mining face of the surrounding rock shall be supported by the mining and cutting roadway.

10. Before entering the stope operation, the operator must deal with the top plate and the two sets of pumice stones in advance, confirm the safety and then carry out the recovery work. If the roof is found to be in the operation, the operation should be stopped immediately, and the signs of the big roof should be found immediately. The personnel were evacuated from the scene and reported in time.

11. The excavation work surface and the poorly-ventilated stope must be equipped with local ventilation equipment, and the local fan has perfect protection devices.

12. Rock drilling must be carried out in a wet operation. The minimum air supply capacity of the rock drilling machine should meet the requirements of rock drilling and dust removal.

13. Dust-proof workers must wear protective masks such as dust masks and safety caries.

14. When the operation personnel are working in the stope, they should pay attention to observe the changes of the ore in the stope and find that the safety problem is immediately evacuated from the operation site.

15. In each layer of mining and the upper contact road close to the transparent position, a layer of contact road must be connected to prevent the lower mouth blockage. The pedestrian well must be kept open.

Fourth, the safe operation procedures for the construction of the patio (sliding well):

1. The working surface must have good lighting. The lighting should use a safe voltage of 36 volts, and the line insulation should be well protected.

2. Workers must wear labor protection products and personal lighting tools.

3. When the patio and the chute are drilled by common method, the working platform should be erected. When the excavation height exceeds 7m, facilities such as ladders should be provided.

4. The erected ladder that is erected must be installed firmly. The operator must fasten the seat belt and safety rope and fix it firmly.

5. Before rock drilling, it must be determined that the working surface is well ventilated before reaching the working surface, and the bunker is removed from the bottom to check the pumice.

6. The blasting operation must use an electric detonator, and the personnel can be blasted only after they reach a safe place.

7. When the patio, the chute, and the tunneling are 7~10m away from the upper part, the surveying personnel should give the through position and issue the “Penetration Notice”, and the operator must set the warning before the blasting.

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