What should be paid attention to when using waterproof airtight doors in coal mines?

1) Check the concentration of harmful gases such as gas and carbon dioxide at the construction site. The construction site must be well ventilated, and the concentration of gas and carbon dioxide gas shall not exceed the provisions of the "Coal Mine Safety Regulations".

2) Check the support of the roof and roadway gang of 5m before and after the construction site, report and deal with the problem in time, and the construction can only be carried out after there are no hidden dangers.

3) The perimeter of the wall should be re-grooved to see the hard top, hard gang and solid with coal and rock; The wall surface is smooth and free of cracks, heavy joints and hollow joints. The following points should be paid attention to when digging the groove:

4) It is necessary to pass the cable line in the fire door and the closed door wall, and the orifice position should be reserved when the wall is built, and when the cable passes, the line pipe should be set up and arranged neatly according to the cable suspension spacing.

5) The walls of fire doors and airtight doors should be built with non-combustible materials, and they should be tight and not leaky. When building a wall with bricks, the stubble should be staggered, the horizontal joints should be horizontal, and the arrangement must be neat. Mortar is prepared in a 1:3 ratio of ash and sand.

6) In the process of building fire doors and airtight doors, other personnel are strictly forbidden to approach the operator to prevent tools and materials from falling and injuring personnel.

1. The waterproof airtight door can be quickly closed in the event of a sudden water surge.

2. For the waterproof airtight door of the new roadway construction at the same time, it is necessary to carry out the water injection pressure test, the length of the roadway in the water gate shall not be greater than 15m, the pressure of the test shall not be lower than the design water pressure, and its stability time shall be more than 24h, and there shall be special safety measures during the pressure test, and approved by the chief engineer of the mine.

3. It is mainly suitable for the setting of ventilation facilities and the adjustment of ventilation system in pedestrian roadways, pedestrian parking lots or shared roadways for people and vehicles. It can be automatically opened and closed according to the vehicle and pedestrian traffic conditions.

4. After installation, it meets the requirements of mine anti-wind, improves the degree of mine automation, and can be manually opened and closed even in the state of mine power failure, which is easy to use, easy to maintain, safe and reliable.

The thickness of the steel plate of the waterproof and fireproof airtight door for mining, the locking device, etc.

Higashiyama waterproof airtight door.

How to test the waterproof airtight door of the underground water pump room in the coal mine, and what is the standard.

How to test the waterproof airtight door of the underground water pump room in the coal mine, and what is the standard. Hello dear, the requirements of the waterproof door of the underground pump room in the coal mine should be set up at the entrance and exit of the suction or press-in pump room and the underground parking lot to be closed. The pressure of the waterproof door should be greater than or equal to the pressure of the water column from the connection between the inclined passage of the pump room and the wellbore to the track surface of the depot at the bottom of the well.

The waterproof door must meet the following requirements: 1. The construction and quality of the waterproof door must meet the design requirements. Neither the gate nor the gate chamber shall leak.

2. The front and rear ends of the waterproof door chamber should be masonry less than 5m of concrete ballast respectively, and the ballast should be filled with concrete, and there shall be no empty help and empty roof. The waterproof gate chamber and ballast protection must be reinforced by grouting with high-grade cement, and the grouting pressure should meet the design requirements; 3. The waterproof door must be manufactured by a manufacturer with a fixed design and a license. 4. At 15 25m on the water side of the waterproof door, a retaining grate door should be added.

Between the waterproof door and the grate door, it is not allowed to park the car to search for information or pile up sundries. When the water comes, close the grate door first, and then close the waterproof door. If a two-way waterproof door is used, a grate door should be set up on each side; 5. The track and overhead line of the electric locomotive through the waterproof door must be flexible and easy to disassemble, and can be quickly removed when the waterproof door is closed; The pressure resistance of the various pipelines in the waterproof door wall and the gate valve installed on the outside of the gate must be consistent with the design pressure of the waterproof gate; The cables and pipes that pass through the waterproof door wall must be tightly blocked with plugs and valves, and no water leakage; 6. The waterproof door must be equipped with a device for observing water pressure, and there is a discharge pipe and a discharge gate; 7. After the completion of the waterproof door, the chief engineer of the mine must be responsible for organizing the relevant departments to carry out acceptance in accordance with the design requirements; The waterproof door of the new roadway construction at the same time must be tested for water injection, the length of the roadway in the water gate shall not be greater than 15m, the wheel closing pressure of the test shall not be lower than the design water pressure, and its stability time shall be more than 24h, and there shall be special safety measures during the pressure test, and approved by the chief engineer of the mine.

8. The waterproof door should be able to close quickly in the event of a sudden water surge. The waterproof door should be opened to the wheel face of the pump room. 9. The waterproof door is closed twice a year, and the tools and parts used to close the waterproof door must be stored in a special place, and a special person is responsible for keeping it, and it shall not be lost or misappropriated.