Research On Technique Of Gas And Fire Disaster Prevention And Control For Gas Burst Thick Coal Seam In Luling Coal Mine

Prevent and control gas calamity is of technique difficulty for safety and effcient product in coal mining in our country. Gas calamity is shown obviously in two aspects: one is gas explosive, and the other is coal and gas outburst. The present thesis is mainly based on the geological condition of Luling coal mining of Huaibei mining group, and integrative gas prevent and control technology in the process of drivage and miningâ…¡824 working place is studied.After entering the soft coal mining, mining conditions have changed fully mechanized caving face in tandem with changes in the layout. In order to ensure the safety of mine production, have to look at the changes in gas, coal mine disasters, the development of appropriate prevention and control measures.In this paper, based on coal excavation and geological parameters Lane Luling Coal Mine of Huaibei geological conditions, and master the basic situation of the gas determined the basic parameters of coalbed methane, gas outburst against the situation, for gas outburst risk assessment to determine the danger zone, through on-site drilling situation and drainage parameters, and fully mechanized coal mining faceâ…¡824 for the main study, which is a comprehensive accident prevention and control of gas has played an important role.Through laboratory experiments, theoretical analysis and on-site industrial experiments, the formation of the Luling coal mine very soft, easy to spontaneous combustion, high gas outburst thick seam mining in the stratification has been the increase in the risk of spontaneous combustion of the fully mechanized caving face under the integrated control of spontaneous combustion technology system. Coal seam in accordance with the laboratory experimental results to enhance prediction of spontaneous combustion, the use of nitrogen injection and grouting the main inhibitor of fire, wind and all gel plugging pressure ventilation, as well as the nitrogen foam fire-fighting technologies such as the rapid combination of spontaneous combustion integrated control techniques, very effective to combat the top-coal caving face spontaneous combustion, to ensure that the Luling coal mine II824-2 top-coal caving face in a very soft, easy to spontaneous combustion, high gas outburst thick seam mining in the post-stratified the risk of spontaneous combustion of the increase in cases, to achieve safe and smooth recovery, Luling Mine for the next high gas fully mechanized mining safety data provide a basis for recovery, reaching the desired goal.