The mine ventilation system of coal mine security measures
Date:2013-11-19 Hits:
The mine ventilation management is an important work in the coal mine safety production, management of mine ventilation is the basis for mine gas prevention and control, fire and dust prevention, selection of mine ventilation system is reasonable to improve mine disaster prevention, disaster ability, so in order to protect the mine ventilation system is safe and reliable, the following measures are formulated:
A selection of mine ventilation system, reasonable, and improve the mine ventilation system.
1, the mine ventilation and ventilation method. According to the mine opening way of mine, mine the central ventilation, ventilation method for taking the mechanical ventilation. According to the design of mine air flow, selection of mine main fan, and is equipped with the same power standby fan, determination of the air supply and effective air quantity, in order to achieve the wind output.
2, improve the mine ventilation system. A level of mine ventilation system, a wing and each coal seam working face must have independent, zoning ventilation, no horizontal series ventilation and mining work face on the wind. The mine ventilation system to simple, destroy the diagonal roadway.
3, strengthen the mine roadway repair, mining roadway layout as far as possible to meet the needs of working face in coal mine ventilation, reduce mine ventilation resistance of mine ventilation system, to ensure the integrity, airflow stability.
4, strengthen mine level through, through coal seam mining ventilation system management, formulated through security measures, make up after the timely adjustment of mine ventilation system and perform the formalities for, good number.
Two, strengthen local ventilation management
1, fan installation location is reasonable, can return corner 10 metres away, to ensure the normal operation of local fan, guarantee not to hair and wind circulation.
2, fan equipment, suction inlet wind cover and the rectifier, high pressure parts of a liner, height more than 0.3 meters above the ground.
3, fan to have special care, are not allowed to be stopped. In the case of power failure or maintenance of local fan stops operation, operation personnel must be evacuated to block wind, check the gas should be restored, and in strict accordance with the "rules" requirements of open fan.
4, fan should be installed wind power, gas power interlocking device, a fan is not at the same time to two working face for the wind.
5, an end to the distance and the export volume according to work requirements, and ensure that the working face and back to the air flow in the gas concentration not to exceed.
6, the strict air duct joint, no break, no joints, soft air duct to duct anti side, hanging straight, do every ring will hang.
Bend or slow turning 7, air duct bend, bend without turn dead, ISO the duct joint as much as possible the use of transition section, and the first after the small, do not spend.
Three, make good use of the mine ventilation facilities
The mine ventilation system must also be in place well suitable installation necessary ventilation structures, guide, partition and control flow, in order to ensure the airflow according to need, timing, directional flow. The quality of the ventilation structures, whether or not to meet the requirements is an important guarantee to effective air quantity level.
1, permanently closed: the mine due to long time exploitation, production level has been gradually deepening, so to have the end of mining level must be built permanent closed, the coal mining area has been mined out, the ventilation system has no use value of the permanent closed.
The permanent closed should be selected in the roadway, former construction should according to the design requirements well, and peripheral cutting according to the design and construction;
All with incombustible cement brick building II permanently closed, hermetically sealed wall formation, no cracks, joints and gap, tight without leakage, wall thickness of not less than 0.5 metres;
The spontaneous combustion of coal mined out area closed to the observation hole, hole to tight sealing.
The first 5 meters closed bracket intact, no fall, no debris, mud and water, fences, in a closed before the beacon, hanging close observation card.
The mine safety production management personnel or the valet staff should always the permanent closed for inspection, found leakage, to arrange personnel to deal with.
2, the permanent door. The mine length, level more, so at each level and the total return airway connection must be set up permanent door.
The permanent door each of not less than two people, the spacing of not less than 5 meters, horizontal opening door intervals of not less than a train length, and the back door;
The door should as far as possible in the permanent support is complete yard or contact in the lane, the wall around to cut to the hardtop, hard to help.
The door edge to edge, a pad, around the tight contact, the smooth without air leakage, doors and door frames not crooked;
The door wall with incombustible cement brick building, the thickness of not less than 0.5 meters, the wall is smooth, no cracks, joints, gap, tight without leakage;
The door to set up anti tank ditch or wind curtain, opened the door to a bottom sill, cable, pipeline hole plugging agents;
The door can be automatically closed, and the pros and cons of interlocking device is arranged, can not automatically close to designated people, total return air damper mine and the mining area return air system should be installed lock, door can not be opened;
The door before and after 5 meters roadway intact, no debris, water silt;
Strengthen permanent door check, found the door deformation or damage, leakage should be promptly arrange personnel to deal with.
Four, perfect the management system of mine ventilation
1, according to the superior departments and the "rules", the mine should establish the special "one ventilation and three prevention" management team, the mine by the Security Deputy Director and the relevant personnel for the administration of production safety specific catch "one ventilation and three prevention".
2, responsible for the organization of technical personnel in charge of mine ventilation, gas prevention, preparation of annual gas prevention, control dust, fire prevention and safety action plan, and according to the plan, improve mine ventilation management of the relevant drawings, board, records, books, do various drawings reports accurate, complete data, report timely.
3, to further improve the system of post responsibility and operational procedures, and according to plan regular training, and assessment, certificates.
4, all the roadway must formulate measures, and develop gas emissions, and make the deployment of air volume work.
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