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首页> 外文期刊>Journal of King Saud University >Supercritical CO 2 source for underground seismic exploration
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Supercritical CO 2 source for underground seismic exploration

机译：超临界CO 2 地下地震勘探的来源

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摘要

Underground seismic exploration is a technical assurance for the geological transparency of the mining face. However, seismic exploration with explosive seismic source has shortcomings such as acquisition difficulties and serious safety hazards. Besides, dynamic detection of the mining face with explosive source is challenging. To this end, the study proposes a supercritical CO2source based on the underground seismic geological condition of the roadway. The phase change blasting mechanism of the supercritical source was revealed, and the equivalent energy of the source was calculated. Additionally, a field test was also carried out. The results show that the seismic signals of the CO2source have clear P-waves, S-waves, and channel waves; the signal excited by the source has strong energy and rich frequency bands; the signal-to-noise ratio of single CO2source is high; and the attenuation images of transmitted channel wave excited by the source shows high resolution and the result is consistent with field validation data. CO2source can be used as a new source of underground in-seam seismic exploration and it also helps in reducing the dependence of explosive seismic source. Besides, the study can achieve early warnings of dynamic geological disasters in the working face and has the advantages of high efficiency, safe, low cost, and environmentally friendly.
机译：地下地震勘探是采矿面地质透明度的技术保证。然而，与爆炸性地震源的地震勘探具有缺点，如采集困难和严重的安全危害。此外，用爆炸性来源的采矿面的动态检测是挑战性的。为此，该研究提出了一种基于道路地下地震地质条件的超临界CO2Source。揭示了超临界源的相变爆破机制，并计算了源的等效能量。另外，还进行了现场测试。结果表明，CO2Source的地震信号具有清晰的P波，S波和沟道波;由源激发的信号具有强大的能量和富频带;单CO2Source的信噪比很高;由源激发的传输信道波的衰减图像显示出高分辨率，结果与现场验证数据一致。 CO2Source可以用作地下地下地震勘探的新来源，也有助于减少爆炸地震源的依赖。此外，该研究可以在工作面上实现动态地质灾害的早期警告，具有高效率，安全，低成本和环保的优点。

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