Mining-induced deformation for a haulage drift of the hanging wall at Jinshandian iron mine in China

In this paper, mining-induced deformation for haulage drifts of the hanging wall at Jinshandian Iron Mine is investigated, based on 8 monitoring stations adopted laser convergence meters. Monitoring results are analyzed to divide deformation-time curves into three types: fluctuation type, partial folding type and whole type. Moreover, it found that tensile easy occur in roadway section corresponding no And with curve, obviously affected by steeply anti-inclined structural plane. Furthermore, relative position relationship between mining activities a station established through local coordinate system. Mining effects studied rectangular components polar respectively. The critical value have significant impact been determined. At last, combined analysis, mechanisms revealed. These help determine appropriate support time adopt targeted schemes.