The Study Of Magmatic Rocks Distribution And The Impacts Of Magmatic Intrusion On Wo Longhu Collierys

Magma intrusion phenomena exist in many of China's collieries, and do serious damages to coal seams. So it is high time to use advanced technical to identify the damage and influence of magmatic rocks on coal seams, and to accurately predict the distribution range of igneous rocks. It has important practical significance and significant economic benefits to colliery reasonable deployment of efficient production.The Wo long-hu colliery was chose to be the subject investigated in this article. On the basis of the reorganization, statistics, analysis to the colliery construction and the geological materials in production period, and incorporate the three-dimensional seismic data, the coalfield's geological structure distribution characteristics and its relationship with magma intrusion, the distribution characteristics and intrusive regulation of magmatics, the primary influencing factors on magmatic intrusion, the influence of magma intrusion on coal seam and quality were analyzed. Then the influence degree of magmatic on the coal seams were confirmed through a number of indicators. The trend-surface fitting models of the related geological variables were established and the influencing trend of magmatic on coal seams was analyzed through the correlation between the main coal seam thickness and the thickness of magma intrusion. The technology of logging constrained inversion was used for seismic materials interpretation in the first mining district of 10th coal seam Wo long-hu colliery. The magmatic intrusive range was interpreted and confirmed, and the exploitation data was compared and validated. Then the influence of magmatic intrusion on the first mining district of 10th coal seam was comprehensive evaluated, and five different influence degree areas were ascertained using the GIS spatial analysis function.