吾祠煤矿地质构造特征及其对煤系地层的影响

关键词 Abstract Due to the complex structures and developmental ruptures of Wuci coal mine the exploration and development wereseriously hampered. Through the geological field works and exploration data the geological structural features of Wuci coal mine and itsimpact on the coal measures strata were discussed deeply. The results showed that the structures in Wuci coal mine were complex themutual cutting and affecting between faults and folds folds and folds damaged coal measures strata form which caused different forms ofblocks formed in plane half-graben and stepped lifting ramp blocks combined in cross-section the continuity of coal seams was damaged low-angle dip rupture caused repeated coal seams relative concentrated reserves and increased the density of coal at the same time cuttingfolds caused coal measures strata became poor and raised the depth of main coal seams moveable ruptures and intruding magma caused thesouth west and north east zonation of coal metamorphism the metamorphism