The main problems of low gas coal mine mine ventilation mana
Date:2013-11-22 Hits:
The main problems of ventilation management, low gas coal mine.
1, the mine ventilation system is perfect to be of no great importance, as long as the local ventilation.
Because of some coal mines are located in the hilly areas, mine are basically using adit or inclined shaft mining method, are higher than the adit mountain, near the wind well formed, the height difference of the natural wind pressure can make the airflow in mine, especially many small coal mine well position higher, the upper coal seam near the outcrop, most of underground work in peacetime basically can not detect the gas concentration, while the shaft is to install the main fan, but usually do not have the basic, only in the examination only temporarily open operation for a period of time in order to cope with the examination, but the "coal mine safety regulations" required at least once a year to mine reverse ventilation exercises basically do not. Mine ventilation system is perfecting, but also there are plenty of people who hold this view.
2, gas detection and examination only, not truly implemented.
Various types of coal mines should say are equipped with a certain amount of gas detection instruments, but the empty class missed detections or false detection is common phenomenon, some small coal mine gas detector is brand new, never used, gas detection recording is fake, individual gas inspector of state-owned coal mine (and safety) of coal mining face or in the mountains slim even without gas detection instrument phenomena have also found. The gas is invisible, to the roadway no long-term ventilation ventilation measures not taken without gas detection and blindly into, leading to the occurrence of gas poisoning and suffocation accidents in recent years have occurred.
3, mistakenly believe that the accidents are due to illegal workers, in violation of labor discipline by.
After the accident, focusing on the investigation personnel operating responsibility, only to the "illegal" and ignore the management reasons, such as the occurrence of abandoned workings of personnel suffocation accidents, it is caused by underground personnel illegal operation, but without a doubt, there are ventilation management because of the tunnel, such as scrap or suspension for no timely closed or set the fence, beacon, not timely recovery roadway scrapped or temporarily shut down within the material (such as rail, Feng Shui pipe, cable, equipment) for a long time, illegal at private buildings fence into the abandoned workings penalty ineffective, regulations exist in name only.
4, as the "coal mine safety regulations" for inhibition. According to the "coal mine safety regulations" requirements, low gas coal mine mining, excavation face as long as there is gas emission must set the gas power instrument, but mine workers and many managers tend to think that this is a device, a waste of money, but put it: "what one says is plausible. If everything goes according to" coal mine safety regulations "to do, so coal mine don't do it." This is obviously a very wrong understanding, is an important ideological source illegal command, exercise of violate the rules and regulations, violation of labor discipline. In the guidance of this kind of wrong ideas, people will see the "coal mine safety regulations" for inhibition.
The main countermeasures of two, mine ventilation safety guarantee to realize
As the low gas mine gas emission quantity is very low, the ventilation accidents could be avoided, as long as every one of US workers will strictly implement the "coal mine safety regulations", according to the command, compliance operation, can eliminate hidden dangers, the accident can be avoided. In order to guarantee the coal mine enterprises to achieve ventilation safety without accidents, the main countermeasure is out of the misunderstanding, to implement the "coal mine safety regulations", to strengthen the management of mine ventilation. Mainly from the four aspects of the implementation of management measures, technical measures, technical equipment and training measures.
(a) management measures
1, in order to effectively carry out the work of coal mine ventilation management, enterprises must set up the ventilation management institution full-time or part-time, mine is equipped with at least one of professional and technical personnel, responsible for the daily management work of mine ventilation.
2, establish and implement the responsibility system for gas control. With the increase of mining, mining down horizontal extension strength increasing, has been mining or abandoned workings, showed an increasing trend of mine gas emission. According to the director of the State Coal Mine Safety Supervision Order No. twenty-first, coal is mainly responsible for people is the first responsibility of coal mine gas control, chief engineer of governance responsibilities on the gas, is responsible for organizing the formulation of gas control scheme and safety technical measures, for funding arrangements for the use. Leadership at all levels to the coal mine gas prevention and control work as a matter, do not have the paralysis of thought, luck, prevent any adventure foolhardy behavior.
3, the strict implementation of methane, carbon dioxide and other harmful gas inspection system. Low gas mine mining working face and the carbon dioxide concentration examination times in each class of not less than 2 times, mining work face the class did not work, gas and carbon dioxide concentration checked at least 1 times per shift. Mine all work place and easy to gas accumulation in place must be fixed, the gas inspection tour from time to time, to develop the gas inspection plan, and take effective measures to prevent the gas inspector empty class missed and false detection of behavior.
(two) technical measures
1, careful preparation of safety technical measures and planning gas prevention and control, improve the system of hundred-percent implementation, disaster prevention and mitigation.
2, conscientiously do a good job of mine gas grade appraising work once a year, according to the results of identification and analysis of gas source condition, to take timely measures to scrap the roadway or closed goaf, gas emission reduction in goaf. Into the wind tunnel has been shutdown or using closed roadway, must make the safety technical measures.
3, in strict accordance with the "coal mine safety regulations" and the anti wind scenario requires an annual mine reverse ventilation exercises. According to exercise results timely preparation of anti wind exercise summary report, found the problem, timely take measures to eliminate or to the reformation of ventilation system in order to enhance the mine ventilation system of disaster prevention and mitigation.
(three) technical equipment measures
1, according to the "coal mine safety regulations" requirements, ventilation safety testing instrument must be equipped with a sufficient number of mine, good ventilation instrumentation daily maintenance, regularly sent to the qualified units repair correction, ensure that the ventilation safety testing instrument is sensitive and reliable.
2, according to the "State Administration of production safety supervision and management order No. tenth", all of mine from January 1, 2007 onwards must equip the mine safety monitoring system, time is pressing, coal mining enterprises must prepare enough funding, staffing, equipment safety monitoring system as soon as possible, so as to enhance the ability of disaster prevention.
(four) the training measures
Safety training and education is an important link in coal mine "three and" principle, the majority of the ventilation ventilation accident due to staff safety awareness is weak, ideological paralysis, independent security ability caused by low, so to strengthen the safety awareness of workers and improve the quality of security technology is particularly important.
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