The Geological Structure Development And Forecast In Xiangshan Mine

In recent years, because of excess production capacity, the new energy industry fast development, that squeezed the survival space of the coal. Coal enterprises are facing mergers and restructuring, reduce capacity situation. But a single energy structure in China, coal is still indispensable to the economic development of our country energy base. Therefore, more need to us safe and efficient mining. Xiangshan coal mine geological conditions is special and complicated. Therefore, the deeply understanding of mine construction objective laws, accurate assessment of mine structure complexity, choose reasonable for coal mining technology, and provide a scientific basis for high yield, high efficient mining resources.Paper through the analysis of regional tectonic background of the study area, and summarizes the mining fault structure structural and magmatic activity rule and fold, on the basis of further analysis of xiangshan coal mine geological structure development characteristics and law of development. Then using fuzzy comprehensive evaluation, evaluation of xiangshan coal mine construction development complexity; Grey theory is applied to forecast the mining area estimation parameter values, and to evaluate not mining area. Thesis research come to the following results:(1) there were revealed fault 192 in south of the first mining area and north mining area in xiangshan coal mine, exposed fault is 170 in no. 3 coal seam i, fault density is 60.6 / km2, 22 fault were revealed in no. 5 coal seam, fault density is 36.6 / km2, in addition to the individual fault, almost all of the coal seam faults are all normal fault. faults to the north of the west to the dominant, followed by something nearly to the north and east, near the north and south to less, most fault throw in 1 ~ 2 m, the second is 2 ~ 5 m. Greater than 5 m medium fault article 21, the biggest fault throw is14.2 m.(2) in the no. 3 coal seam mining field, a total of development fold structure article 14, article 15 in no.5 coal seam, a total of development to the fold structure. Fold two coal strata dip Angle generally between 2.5 ~ 8.8 °. belong to open gently fold, axial length changes between 400 ~ 3500, the width of the change from 350 to 1550 m, Anticline and syncline appear alternately, in addition to the individual fold amplitude up to 20 m, the rest are under 20 m, mostly small fold is 5 ~ 10 m wide. EW and EW is given priority to, time for NE.(3) the use of fuzzy comprehensive evaluation, the xiangshan coal mine has been is divided into 55 units of evaluation, the result is: the belongs to ? class structure has 43 units, belong to ? class structure has 6 units, belong to ? class structure has 4 units, belong to ? class structure has 2 units, the evaluation results compared with the actual mining revealed. Structural complexity of the units of mining area not type has made a comprehensive evaluation, the result is: 41 points by unit, not mining area belongs to ? class structure has 8 units, belong to ? class structure has 31 units, belong to ? class structure has 2 units, so not mining area is relatively simple structure complexity.