Gas Occurrence And Control Technology Research Of Yonghong Mine

This paper according to the shanxi Yonghong coal mine no.3 coal seam gas occurrence, distribution, gas drainage from coal seam gas emission mode, coal and gas outburst risk sensitive indicators,systematically studied the Yonghong coal mine gas emission rule and comprehensive control technology. This paper in reference and the basis of summarizing the predecessors' research on gas extraction technology,according to the actual situation of Yonghong coal mine, using the coal mine gas emission source prediction method respectively predicted the 3509 working face gas emission,3509 tunneling faces and other sites; On forecast results, to make bedding on working face advance drilling drainage, gas control method of the extraction in the tunneling faces to smoke before digging, two-way driving way of driving to new goaf drainage closed end lane ways for old goaf closed drainage of drainage, high as the auxiliary mine goaf drainage lane and the upper corner gas drainage way; Using the direct determination of coal seam gas residual stock as regional drainage effect testing method, using the method of index of drill cuttings as local outburst prevention measures effect testing method. By looking at the scene of the tunneling of the acquisition data, dynamic phenomenon, using the method of comprehensive analysis and comparison, it is concluded that Yonghong of no.3 coal seam coal mine coal and gas outburst danger of the sensitivity of the indicators, to determine the critical value of the outburst index.