What ideas should people who have been engaged in shotcreting in tunnels for a long time change?

Personnel who have been engaged in shotcreting in tunnels for a long time should pay attention to the following points:

1, pay attention to safety. Spraying personnel should wear dust masks, latex gloves and glasses and protective clothing.

2, pay attention to the operation time should not be too long, take a bath immediately after the operation.

3, in the process of injection, such as pipe blockage, stop wind power failure, etc. Close the water gate immediately and put down the nozzle to prevent water from flowing into the delivery pipe.

4, tunnel shotcrete to strengthen ventilation measures. It is best to use wet spraying technology, with less dust than dry spraying.

5. Pay attention to health and have a physical examination of the lungs at least once a year.

6, tunnel working time is uncertain, easy to produce disorder, should pay attention to more rest.

Extended data:

Preparation of shotcrete in tunnel;

1, check whether the anchorage installation meets the design requirements, and handle the problems in time when found.

2. Clean up the gangue sundries at the injection site, install the shotcrete machine in a stable and safe place with a spacing of not less than 0.5m, and connect the air pipes and water pipes. The conveying pipe should be straight without sharp bends. Joints should be tight, no air leakage. It is forbidden to use non-antistatic plastic pipes as conveying pipes.

3, check whether the shotcrete machine is in good condition, and send no-load test run, tighten the friction plate, can not appear air leakage phenomenon.

4. Before shotcreting, the rock surface must be washed by high-pressure feng shui, and shotcreting thickness signs should be installed on the vault and roadway.

5. Spraying personnel should wear complete and effective labor protection articles.

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