Application of Comprehensive Geophysical Exploration in Deep Mines Resource Exploration
Mineral resources are an essential material foundation for social and economic de-velopment.Currently,most old mines in China are facing a severe situation of reserves de-pletion,tengh problems are hardly tackled using current technologies.In response to the particularity of mining exploration,based on geological and geophysical data from a certain mining area in Huoqiu,Anhui province,this paper selects typical profiles in the mining area for gravity,magnetism,micro motion and controlled source audio magnetotelluric method(CSAMT).Using micro motion and audio magnetotelluric data analysis to speculate on the goaf and collapse areas of shallow ore bodies,taking advantage of integrating micro motion exploration with gravity data in depth to compensate for weaknesses,and directly linking mi-cro motion apparent shear wave velocity with underground medium density through shear modulus,based on the known distribution pattern of shear modulus at the location of the ore body and combined with gravity and magnetic inversion,this paper inferred two nearly paral-lel layered ore bodies with a length of 200～250 m and a thickness of about 50 m at depths of 300 m.The inflection point of a similar S-shaped fold at an elevation of 100～200 m is a fa-vorable location for mineralization.At the same time,the main ore body is speculated to be extending beyond the bottom plate.The work has confirmed that new micro motion explora-tion technology combinedwith traditional geophysical methods in the current mining area can improve the effectiveness of locating and predicting hidden deposits(bodies)in the deep and peripheral areas of the mine,and tap into new prospecting potential.
old minesgravitymagnetic methodcontrolled source audio magnetotelluric method(CSAMT)micro motion explorationshear modulus
NETL
NSTL
万方数据
维普
