大环发射天线磁感应透地无线起爆系统透地性能分析
Analysis on earth penetration performance of magnetic induction-based through-the-earth wireless initiation system using large circular transmitting antennas
李晓奂 1杨维 1孙皓1
作者信息
- 1. 北京交通大学 电子与信息工程学院,北京 100044
- 折叠
摘要
为在露天矿等起爆作业场景中实现大规模的透地无线起爆,研究在地上发射端采用大环发射天线的磁感应透地无线起爆系统.建立磁感应透地无线起爆中发射天线线圈与接收天线线圈的等效电路,基于等效电路建立大环形天线无线起爆透地磁感应强度模型,计算得到透地无线起爆磁感应强度阈值.仿真分析透地深度、发射天线匝数与半径、发射功率等因素对透地磁感应强度的影响.研究结果表明:透地无线起爆系统能实现对地下7.52 m 深处雷管的起爆,且可通过增加发射线圈匝数、适当降低发射线圈半径,以及提高发射功率的方式提高透地无线起爆系统的起爆深度.研究结论为大环形发射天线磁感应透地无线起爆系统的参数选取提供理论依据.
Abstract
In order to realize large-scale through-the-earth(TTE)wireless initiation in blasting operation scenes such as open pit mines,a TTE wireless initiation system based on magnetic induction(MI)with large circular transmitting antenna coils at the ground transmitting end is studied.The equivalent circuit of transmitting antenna coils and receiving antenna coils in MI TTE wireless initiation system is established.Based on the equivalent circuit,the MI intensity model of TTE wireless initiation with large circular antennas at the transmitting end is established,and the MI intensity threshold of TTE wireless initiation is calculated.The influence of penetration depth,turns and radius of transmitting antennas and transmitting power on TTE MI intensity is simulated and analyzed.The results show that the TTE wireless initiation system can detonate the detonators at the depth of 7.52 m underground,and the initiation depth of the TTE wireless initiation system can be improved by increasing the number of turns of the transmitting coils,appropriately reducing the radius of the transmitting coils and increasing the transmitting power.The research conclusions provide a theoretical basis for the parameter selection of the MI TTE wireless initiation system based on the large circular transmitting antenna coils.
关键词
透地通信/磁感应/无线起爆/涡流损耗/大环发射天线Key words
through-the-earth communication/magnetic induction/wireless initiation/eddy current loss/large circular transmitting antennas引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据