The mining work in high-density coal mining areas has gradually extended to deep strata, and 3D seismic exploration technology plays a key role in the exploration of deep coal resources. Collecting high-quality 3D seismic exploration signals is the prerequisite for accurate analysis of deep coal distribution. Taking the L-city high-density coal mining area as the study area, the arrangement position of the measuring line is determined. The best excitation parameters excited by seismic waves were determined by 3D seismic test, and the optimal well depth and optimum gunpowder amount are determined as follows: the depth of the well in the thin soil covered area is 4 m deep and the dose is 2 kg; the well depth of the bedrock exposed area is 4 m and the dose is 2 kg. The positional relationship between the excitation point and the reception point is described by the three-dimensional seismic observation system. The DSU1 new generation all-digital detector converts seismic waves transmitted to the ground into electrical signals. Finally, a three-dimensional seismic survey signal is obtained. The results show that the 3D seismic survey signal collected by this method has low distortion and clearly shows the variation law of thickness profile, which has positive guiding significance for coal mining in the later stage.

中文翻译：

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高密度煤矿区3D地震勘探信号采集方法

高密度煤矿区的采矿工作已逐步扩展到深层，而3D地震勘探技术在深层煤炭资源的勘探中起着关键作用。收集高质量的3D地震勘探信号是准确分析深部煤分布的前提。以L城市高密度采煤区为研究区域，确定了测量线的布置位置。通过3D地震测试确定了地震波激发的最佳激励参数，并确定了最佳井深和最佳火药量：薄土覆盖区中的井深为4 m深，剂量为2 kg ; 基岩裸露区域的井深为4 m，剂量为2 kg。激发点和接收点之间的位置关系由三维地震观测系统描述。DSU1新一代全数字探测器将传递到地面的地震波转换为电信号。最后，获得三维地震勘探信号。结果表明，该方法采集的3D地震勘测信号失真小，清楚地表明了厚度剖面的变化规律，对后期的采煤具有积极的指导意义。