Some Advances of Electromagnetic Method in the Deeper Prospecting of Mineral Resources
详细信息
- 责任者：He Jishan (Central South University ; Changsha 410083 ; China)
- 刊名：Guizhou Geology
- 出版年：2013
- 卷期：30(1)
- 关键词：电磁法勘探 ; electromagnetic prospecting ; 矿产资源 ; mineral resources
- 页码：p.1-8
- 图表：illus., 10 refs.
- 分类号：1600
- issnNo：ISSN1000-5943
- isbnNo：CN52-1059/P
摘要
The need for various kinds of mineral resource is steadily on the increase along with rapid development of our country.The situations of resources short require that more and deeper mineral resources must be explored and exploited. Based on the overview of situation and development of electromagnetic prospecting methods,some new advances of electromagnetic prospection methods is introduced in this paper,including Wide-Field Electromagnetic Method(WFEM),Pseudo-Random signal Electromagnetic Method(PREM),Dual-Frequency Induced Polarization(DFIP) of big depth and Aeromagnetic survey used unmanned helicopter(UMHAM) in the super low level.WFEM has many advantages,such as its measurable area is larger,its measured signal more powerful,its accuracy more exact,only one component is needed to survey and its survey efficiency more high,etc.PREM can simultaneously transmit and receive signal of multi main frequency which strength are roughly equal,so that its efficiency in field could be manyfold increased.The EM coupling could be automatically cancelled in survey of DFIP.UMHAM would be uninfluenced by topography,so the labour intensity of human can be greatly decreased.They all are new useful methods for deeper prospection.
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