导爆索-导爆管起爆网路在多点爆区联合起爆中的应用

Application of Detonating Cord and Detonating Nonel Tube Detonating Network in Joint Blasting of Multiple Explosive Zones

地下矿山多个爆破区域同时爆破时,爆破总药量大,尤其爆破区域相距较远时,爆破网路组网困难,且组网后网路较为复杂。导爆索-导爆管复合起爆网路具有起爆能大、传爆速度快、传爆距离长、网路结构简单、连接可靠等优点,可有效解决多个远距离爆区同时起爆的爆破网路组网问题。某矿山两个分段的三个爆破区域需同时起爆,爆破矿石量6.1万t,采用导爆索-导爆管复合起爆网路,使用120 m长传爆导爆索成功引爆1278根导爆管,爆破药量20.3 t。通过对爆破震动、爆炸安全距离和爆破块度等因素的分析,认为爆破效果良好。经过实践,导爆索-导爆管起爆网路组网能力强,网路连接可靠,清晰直观,便于检查连接质量,并降低了爆破成本,可为类似矿山的工程爆破提供借鉴。

The total blasting charge was large when simultaneous blasting of multiple blasting areas in underground mines,it was difficult to set up blasting network,and the network was more complex after setting up blasting network,especially when the blasting area was far from each other.The compound detonating network of detonating cord and detonating nonel tube has the advantages of large detonating power,fast detonation transmission speed,long detonation distance,simple network structure and reliable connection,which can effectively solve the problem of blasting network formation when multiple remote blasting areas are simultaneously detonated.Three blasting areas in two sections of a mine need to be detonated at the same time,and the amount of blasting ore is 61,000 tons.The compound detonating network of detonating cord and detonating tube was adopted,and 1278 detonating tubes were successfully detonated with 120 m long transmission detonating cord,and the amount of blasting charge was 20.3 t.Through the analysis of blasting vibration,safe explosion distance and blasting fragmentation,it is considered that the blasting effect is good.Through practice,the detonating network of detonating cord-detonating nonel tube has strong networking ability,reliable network connection,clear and intuitive,easy to check the connection quality,and reduces the cost of blasting,which can provide reference for engineering blasting of similar mines.