等值反磁通瞬变电磁法在金矿采空区探测中的应用
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任喜荣, 李欣, 周志杰
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Application of the opposing coils transient electromagnetic method in investigation of mined-out areas of a gold deposit
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REN Xi-Rong, LI Xin, ZHOU Zhi-Jie
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表1 勘察区野外露头岩石电性参数统计
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Table 1 Statistical of electrical parameters of rock outcrops in the survey area
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岩性 | 样品数 | 电阻率最小~最 大值/(Ω·m) | 电阻率几何平 均值/(Ω·m) | 电性 特征 | 细沙(充水) | 6 | 1.3~6.6 | 2.1 | 低阻 | 红黏土 | 11 | 20.8~43.7 | 29 | 低阻 | 泥岩 | 10 | 43.1~80.3 | 60.7 | 低阻 | 细沙(含泥) | 8 | 16.8~115.6 | 61.7 | 低阻 | 砂岩(破碎) | 7 | 55.2~77.4 | 63.6 | 低阻 | 粉土 | 12 | 90.8~239.7 | 162.3 | 低阻 | 溶蚀灰岩(含水) | 15 | 103.9~405.5 | 205.9 | 低阻 | 细沙 | 2 | 270.9~271.2 | 271.1 | 低阻 | 砂岩(板状) | 5 | 329.4~455.1 | 376.5 | 低阻 | 含泥砾石 | 13 | 423.0~654.6 | 506.7 | 中等 | 腐殖土 | 8 | 396.7~865.7 | 560 | 中等 | 砂岩(块状) | 3 | 772.8~779.3 | 776.1 | 中等 | 溶蚀灰岩 | 6 | 947.7~1486.5 | 1159.7 | 中等 | 砾岩 | 18 | 334.4~3860.7 | 1164.2 | 中等 | 砂砾石 | 9 | 1154.4~1410.9 | 1239.3 | 中等 | 灰岩 | 14 | 9019.8~17612.3 | 11938.9 | 高阻 | 结晶灰岩 | 9 | 11358.7~27581.3 | 16680.4 | 高阻 |
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