研究了九龙川煤矿二区块厚黄土层覆盖条件下三维地震勘探技术。根据黄土塬区复杂的地震地质条件，通过大量的试验，确定适合该黄土塬区的参数进行数据采集，选择合理的数据处理流程、参数进行资料处理，通过联井时间剖面确定层位，用纵横向时间剖面来追踪反射波相位及其变化特征，用水平切片、层拉平切片做进一步的检验，反复对比分析地震地质特征在三维空间的属性，查明了九龙川矿区总体为一个向北西缓倾的单斜构造，逆断层7条，正断层4条，主要煤层煤6层厚度较稳定，煤8层厚度变化较大。%In this paper, study was made on the 3D seismic prospecting technique used in No. 2 district in Jiulongchuan Mine which was covered by the thick loess layer. According to the complex seismic-geological conditions in the loess tableland area and through a lot of tests, the parameters suitable for this loss tableland area were determined for data acquisition and the rational data processing program and parameters were chosen for data processing. The horizons were determined by the joint-well time section, the vertical and horizontal time sections were used to follow up the phase of the reflected wave and its variation characteristics. Further tests were done with the horizontal slices and layer flattening slices, repeated comparative analysis was carried out on the attribute of the seismic-geologic characteristics in the 3D space. Finally, it was found out by using the above techniques and methods that Jiulongchuan Mining Area was a north-west gently-inclined monocline structure, there were 7 reverse faults and 4 normal faults, the thickness of No. 6 coal seam was relatively constant but that of No. 8 seam changed greatly.
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