煤矿安全2024，Vol.55Issue(5)：235-242,8.DOI:10.13347/j.cnki.mkaq.20231323
矿用孔中瞬变电磁仪的研制
Development of transient electromagnetic instrument in mine hole
摘要
Abstract
In view of the traditional mine transient electromagnetic instrument is easy affected by the underground human interfer-ence factors,a kind of mine in-hole transient electromagnetic instrument is designed.The transmitting part of the instrument is mainly composed of bridge circuit and hidden circuit.In order to shorten the turn-off time,the voltage regulator diode between the source and gate and the absorption and blank-elimination circuit on both sides of the transmitting coil constitute a fast turn-off circuit system,which quickly release the energy in the transmitting coil and weaken the inductance effect.The receiver part has the ability of full space signal acquisition,and the dynamic range of the device meets the needs by self-adjusting the gain multiple of the sec-ondary field signal.The test show that the instrument have the ability to probe drilling radial water cut abnormal body,because the device is located in the hole,close to target body,easy to obtain high signal-to-noise ratio of the secondary field signal,and avoid the influence of human interference factors of roadway.关键词
矿井水害/孔中瞬变电磁仪/快速关断/多通道采集/吸收消隐电路/FPGAKey words
mining water hazard/in-hole transient electromagnetic instrument/fast turn-off/multi-channel acquisition/absorption blanking circuit/FPGA分类
矿业与冶金引用本文复制引用
向潇桐,李宏杰,叶锦娇,邱浩..矿用孔中瞬变电磁仪的研制[J].煤矿安全,2024,55(5):235-242,8.基金项目
煤炭科学技术研究院有限公司新产品新工艺开发资助项目(2022CG-AQ-04) （2022CG-AQ-04）
