| 李波,屈利军,郭海,王兆龙,王康盛.可控源音频大地电磁测深(CSAMT)攻深找盲探测效果分析——以湖南湘中煤矿资源勘查为例[J].矿产勘查,2018,9(11):2226-2232 |
| 可控源音频大地电磁测深(CSAMT)攻深找盲探测效果分析——以湖南湘中煤矿资源勘查为例 |
| Analysis of the effects of controlled source audio-frequency magnetotellurics sounding (CSAMT) on deep mineral detection:Taking exploration of coal mine in middle part of Hunan Province as an example |
| 投稿时间：2018-04-26 |
| DOI： |
| 中文关键词: 含煤层 断层构造 可控源音频大地电磁测深 钻探 |
| 英文关键词: coal seam,fault structure,controlled source audio-frequency magnetotelluric sounding,drilling |
| 基金项目: |
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| 摘要点击次数: 1960 |
| 全文下载次数: 790 |
| 中文摘要: |
| 在分析研究不同地层岩石组成成分、接触关系和对应电性特征基础上,利用可控源音频大地电磁测深来寻找隐伏煤层。已知断裂构造F4为本次探测干扰地质体,采用拉大点距的措施有效避免了由此引起的低阻干扰异常,进一步提高物探异常定性解释可靠性。通过后期钻探验证,在ZK4007号钻孔603.1 m埋深见3.21 m厚煤层；同时,在110.3~150.2 m埋深其灰岩破碎、角砾发育,对岩溶构造推断解释也进行了有效揭露。多个钻探在全覆盖区不同深度发现不同厚度的煤层,有力证明了可控源音频大地电磁测深在全覆盖区进行煤矿资源攻深找盲工作是有效的。 |
| 英文摘要: |
| On the analysis of lithology of various strata,relationship of contactsand electrical properties, the method of controlled source audio-frequency magnetotelluric sounding is applied to detect deep-covered coal mine. Abnormal interference of low resistance , caused by the known fault structure(F4),is filtered effectively by spare measurement, so as to improve geophysical interpretation. After drilling, the coal with 3.21 m of thickness was found at the depth of 603.1m in hole of ZK4007. Meanwhile, fractures and brecciation appeared obviously at the range of 110.3~150.2 m, which matched to the conclusion of karst structure. Consequently, different thickness of coal strata were found at different depth by drilling in all-covered area , which indicated that CSAMT is helpful for deep mineral detection. |
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