{"title":"金属巷道支架对矿井瞬变电磁探测的影响","authors":"Yaoning Liu, Shucai Liu, Maofei Li, Xinming Liu, Weihong Guo","doi":"10.15446/ESRJ.V25N1.80156","DOIUrl":null,"url":null,"abstract":"How to cite item Yaoning L., Shucai L., Maofei L., Xinming L., Weihong G. (2021). Influence of Metal Roadway Supports on Transient Electromagnetic Detection in Mines. Earth Sciences Research Journal, 25(1), 109-114. DOI: https://doi.org/10.15446/ esrj.v25n1.80156 To study the influence of metal supports in roadways on the detection of mines using the transient electromagnetic method, authors treated metal supports including anchor nets as a thin metal layer. According to the finite differences principle, the characteristics of the full-space transient electromagnetic response under the thin metal layer’s influence were calculated using a non-uniform grid. The thin metal layer's presence slowed the electromagnetic field’s diffusion rate and hindered the overall diffusion. The transient electromagnetic response curve observed under the thin metal layer’s influence was higher than that without the supports. Thicker metal layers resulted in higher early response values and slower decay rates. The decay rate increased as a function of time, gradually approaching that of the curve without metal supports. The simulation of the transient electromagnetic response to the model of water-containing lowresistance structures showed that the metal roadway support reduced the sensitivity of the transient electromagnetic method and weakened its response to low-resistance anomalies. ABSTRACT Influence of metal roadway supports on transient electromagnetic detection in mines","PeriodicalId":11456,"journal":{"name":"Earth Sciences Research Journal","volume":"25 1","pages":"109-114"},"PeriodicalIF":0.7000,"publicationDate":"2021-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Influence of metal roadway supports on transient electromagnetic detection in mines\",\"authors\":\"Yaoning Liu, Shucai Liu, Maofei Li, Xinming Liu, Weihong Guo\",\"doi\":\"10.15446/ESRJ.V25N1.80156\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"How to cite item Yaoning L., Shucai L., Maofei L., Xinming L., Weihong G. (2021). Influence of Metal Roadway Supports on Transient Electromagnetic Detection in Mines. Earth Sciences Research Journal, 25(1), 109-114. DOI: https://doi.org/10.15446/ esrj.v25n1.80156 To study the influence of metal supports in roadways on the detection of mines using the transient electromagnetic method, authors treated metal supports including anchor nets as a thin metal layer. According to the finite differences principle, the characteristics of the full-space transient electromagnetic response under the thin metal layer’s influence were calculated using a non-uniform grid. The thin metal layer's presence slowed the electromagnetic field’s diffusion rate and hindered the overall diffusion. The transient electromagnetic response curve observed under the thin metal layer’s influence was higher than that without the supports. Thicker metal layers resulted in higher early response values and slower decay rates. The decay rate increased as a function of time, gradually approaching that of the curve without metal supports. The simulation of the transient electromagnetic response to the model of water-containing lowresistance structures showed that the metal roadway support reduced the sensitivity of the transient electromagnetic method and weakened its response to low-resistance anomalies. ABSTRACT Influence of metal roadway supports on transient electromagnetic detection in mines\",\"PeriodicalId\":11456,\"journal\":{\"name\":\"Earth Sciences Research Journal\",\"volume\":\"25 1\",\"pages\":\"109-114\"},\"PeriodicalIF\":0.7000,\"publicationDate\":\"2021-04-16\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Earth Sciences Research Journal\",\"FirstCategoryId\":\"89\",\"ListUrlMain\":\"https://doi.org/10.15446/ESRJ.V25N1.80156\",\"RegionNum\":4,\"RegionCategory\":\"地球科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"GEOSCIENCES, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Earth Sciences Research Journal","FirstCategoryId":"89","ListUrlMain":"https://doi.org/10.15446/ESRJ.V25N1.80156","RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"GEOSCIENCES, MULTIDISCIPLINARY","Score":null,"Total":0}
Influence of metal roadway supports on transient electromagnetic detection in mines
How to cite item Yaoning L., Shucai L., Maofei L., Xinming L., Weihong G. (2021). Influence of Metal Roadway Supports on Transient Electromagnetic Detection in Mines. Earth Sciences Research Journal, 25(1), 109-114. DOI: https://doi.org/10.15446/ esrj.v25n1.80156 To study the influence of metal supports in roadways on the detection of mines using the transient electromagnetic method, authors treated metal supports including anchor nets as a thin metal layer. According to the finite differences principle, the characteristics of the full-space transient electromagnetic response under the thin metal layer’s influence were calculated using a non-uniform grid. The thin metal layer's presence slowed the electromagnetic field’s diffusion rate and hindered the overall diffusion. The transient electromagnetic response curve observed under the thin metal layer’s influence was higher than that without the supports. Thicker metal layers resulted in higher early response values and slower decay rates. The decay rate increased as a function of time, gradually approaching that of the curve without metal supports. The simulation of the transient electromagnetic response to the model of water-containing lowresistance structures showed that the metal roadway support reduced the sensitivity of the transient electromagnetic method and weakened its response to low-resistance anomalies. ABSTRACT Influence of metal roadway supports on transient electromagnetic detection in mines
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