| Coal body structure is one of the important influencing factors of coal and gas outburst, also may be the important factor that affect coal and gas delayed outburst. No.C13coalbed is a coal and gas outburst coalbed of Wangfenggang Coal mine in huainan.Coal and gas outburst accidents and coal and gas delayed outburst accident has happened before in here.In this paper, taking an example of Wangfenggang Coal mine,we study of No.C13coalbed,it has a certain significance of coal and gas outburst and coal and gas delayed outburst.Based on the study of the NO.C13coalbed, this paper concluded the following contents and understanding:1) Through to the gas content measurement points of data processing of No.C13coalbed, gas content is relatively rich of No.C13coalbed, and along with the elevation of coalbed floor is lower, the greater the gas content of the trend.2) Combined with site survey and the coal body structure of logging curve interpretation of No.C13coalbed, the normal structure of coal, transitional structure of coal and tectonic coal alternate with each other of coal body structure of No.C13coalbed. And the thickness of development of outburst danger is thicker of No.C13coalbed.3) The thickness of No.C13coalbed is thicker, the thickness of outburst danger has a tendency to thicker.4) Through the analysis of coal body structure characteristics of No.C13coalbed, compare to the standard of prevention and control of coal and gas outburst rules, prediction the zone of coal and gas outburst danger of No.C13coalbed and preliminary discussion on coal body structure on the impact of the existence of coal and gas delayed outburst. |
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