"One-way" means mine ventilation; "Three defenses" refers to the prevention and control of gas, coal dust and mine fires.
"One Ventilation and Three Preventions" refers to the abbreviation of mine ventilation, gas prevention, coal dust prevention, fire fighting and other technical management in coal mine safety production.
One pass: the coal mine has a perfect mine ventilation system; Three defenses: coal dust prevention, fire prevention and gas explosion prevention.
In view of the fact that mine "ventilation and prevention" involves many places and a wide range, coal mining enterprises have made three improvements on the basis of establishing a perfect system, focusing on standardized management and strictly implementing it:
The first is to improve the management responsibility of "communication and prevention" in mines. According to the needs and responsibilities of the "General Prevention" work, all underground locations shall be listed and managed according to the jurisdiction of the production unit, the "General Prevention" area shall be revised in time, and the work contents, work standards, inspection and acceptance of each piece shall be defined, so as to ensure that the "General Prevention" work responsibilities, tasks and standards are clear, to prevent buck passing, and to make the "General Prevention" work standardized and ubiquitous.
The second is to improve the hidden danger investigation and management system of "spreading and preventing simultaneously". Establish a monthly, ten-day and weekly mine inspection prevention and control network, and strictly manage the "seven steps" of information collection, release, claim, implementation, acceptance, assessment and notification, with strict supervision by functional departments and strict implementation by responsible persons.
The third is to promote scientific exchanges and defense. Relying on scientific and technological progress and implementing capital investment, the foundation of mine disaster prevention and resistance has been effectively consolidated, and serious accidents have been put an end to.
Legal basis:
Notice of Jiangsu Coal Mine Safety Supervision Bureau on printing and distributing the guiding opinions on further strengthening the management of "one ventilation and three defenses" in Jiangsu coal mines
Thirty-ninth coal mining enterprises and mines should establish a gas zero overrun target management system, and establish a gas zero overrun target management system to improve the requirements.
Note: This article is based on the concept of "gas overrun is an accident". In the history of Jiangsu coal mines, major gas explosion accidents occurred frequently. For example, on July 22, 2006, 5438+0, a particularly serious gas explosion accident occurred in Jiawanggangzi village, which killed 92 people. It was caused by chaotic ventilation management and gas exceeding the standard. Therefore, gas control must first put an end to the occurrence of gas overrun. In the 20 18 annual work report, the State Administration of Coal Supervision also explicitly advocated the establishment of the goal of "zero exceeding the limit" for gas. At the same time, at present, Jiangsu coal mines also have the ability to achieve "zero overrun" of gas. According to preliminary statistics, in the past three years, 20 16, 2017, 87.5% of the coal mines in the province and 20 18 100% of the coal mines have achieved "zero gas overrun".
Article 16 When calculating the air volume of the wind measuring site according to the absolute gas emission, the conversion of gas concentration in the return air flow of the wind measuring site shall not exceed 0.8%.
Article 49. When the gas concentration in the caving space of the return air corner goaf reaches 0.8%, measures such as water jet fan and feng shui mixer should be installed to dilute the gas in the goaf, or gas drainage measures should be taken.