铜绿山矿露天减震爆破地震效应观测与分析

OBSERVATION AND ANALYSIS OF SEISMIC EFFECT IN OPENCAST CUSHION BLASTING IN TONGLUSHAN MINE

通过对该矿露天减震爆破地震效应的观测，证明了采用孔内分 段间隔装药与孔内孔间微差爆破方案、改变爆破抵抗线与民房的相对位 置、选用合理的微差间隔时间等措施，对降低爆破地震强度是有效的。这 些措施既有利于露天矿的扩帮剥离，又保证了爆区附近民房的安全。

Through observing the seismic effect in opencast cushion blasting. in this mine,it has been proved that the measures which the plan for the deck charging and the hole-in and hole-between millisecond delay blasting was used, the relative position of blasting burden and residential houses was changed and the rational millisecond delay intervals were selected etc are effective to reduce the blasting seismic effect. These measures not only are beneficial to ream stripping of opencast mine but also ensure the safety of the houses near blasting district.