大南湖七号煤矿地质构造特征及其对瓦斯赋存的影响OA

In order to identify the influencing factors of gas occurrence in Dananhu No.7 Coal Mine,Dananhu No.7 Coal Mine was taken as the research object.Based on the production data and geological exploration results of mine,combined with drilling data and seismic exploration data,the factors affecting its gas occurrence characteristics were analyzed and studied.The results show that the faults in the study area are mainly small and medium-sized normal faults,with open fault surfaces and good gas barrier layers in the up-per part,leading to a sharp decrease in coal seam gas content.The control effect of folding on gas occurrence is not significant,and the influence of geological structures on gas occurrence is mainly due to the uneven distribution of gas,forming conditions conducive to gas discharge or closure.Closed geological structures are conducive to the occurrence of gas,while open geological structures are conducive to the discharge of gas.