【摘要】 爆破震动灾害预测和控制在爆破施工与设计中具有非常重要的地位,为了实现锡矿山锑矿床五窿道区浅层残矿的回收,确保地下开采爆破振动不影响地表建筑的安全,采用UBOX-20016爆破振动测试记录仪对该矿区地下爆破振动速度进行测定,研究了爆破振动速度与单响最大爆破药量、爆心距之间的关系.研究结果表明:采用微差爆破技术能有效的降低爆破震动的危害,该矿区地下开采微差爆破微差时间应在50 ms以上;该区残矿回收时,要严格控制单段装药量,最大不超过28.5 kg.更多还原

【Abstract】 The forecast and control of blasting vibration disasters is very important in blasting construction and design.In order to mine the shallow remnant antimony ore in Wulongdao mining area of Xikuangshan and to ensure the security of the surface architecture during underground mining blasting,we measured the blasting vibration velocity by using the UBOX-20016 measurement recorder and studied the relation among blasting vibration velocity,maximum charge of a single segment,and blast center distance.The results show that(1) the millisecond blasting technique can effectively reduce number of disasters induced by blasting vibration and the millisecond delay time should be longer then 50ms,and(2) the maximum charge of a single segment should be strictly controlled,with the value being 28.5 kg.更多还原