The Research On Goaf Hydrops Distribution At Jixi Xingnong Area

In recent years, frequent mine flood accident cause huge hidden trouble to ourcountry’s coal industry safety production. Jixi Xingnong area belongs to Sihai coalfield. Coal mining has a long history in the region. Long-term behindhand miningtechnology and historical disordered mining bring about that diggings have no mincesproduction technique data. As the country’s emphasis on safe and efficient mining ofcoal mine in recent years, in order to realize the sustainable development of coalresources, ensure safe and efficient mining of coal resources at Xingnong area, it isimportant that researching goaf hydrops distribution law and realizing integration ofcoal resources in the region.Different state underground coal and rock has some regularity of magnetism.Using the principle of electromagnetic induction to research rock coal, goaf and theresistivity change rule of its aquifer on different occurrence condition at JixiXingnong area. Numerical model is built and analyzed of goaf hydrops on differentoccurrence condition at Jixi Xingnong area, then the all apparent resistivity iscalculated and the inversion imaging is used. Electromagnetism difference and theresistivity change rule of coal mining rock mass, caving goaf water filling goaf andhas not yet been mined coal seam is revealed.Transient electromagnetic theory and method is applied. The area is surveyed bytransient electromagnetic instrument PROTEM at Jixi Xingnong area. Geomagneticfield change rule of stratum at Jixi Xingnong area is mastered. Through analyzing thesecondary field change rule of goaf hydrops, goaf hydrops and fault with waterpermeability and developmental situation of goaf dribbling fracture is known well.By researching goaf hydrops at Jixi Xingnong area, it provided theoretical andtechnical support of coal mine water prevention and control work at the area. Itprovided reliable technical data to improve recovery rate of coal resources at the area.It increased safety factor for personal safety of coal enterprise. The perfection of thetheory will provide reliable basis for emergency rescue of coal mining accident.