黄土塬区的三维地震勘探技术

3D Seismic Prospecting Technique in Loess Tableland

在平原、山区、丘陵、戈壁和沙漠地区,煤矿采区三维地震勘探技术已得到了大范围的推广应用,但在西部黄土塬区,由于其特有的地貌特征及复杂地质条件,勘探程度不高,三维地震勘探在该类地区仍被视为“地震禁区”。对此在多次试验的基础上,采取改善激发条件、多域迭代静校正等相应技术措施,克服了黄土塬区开展三维地震勘探的主要难点,并结合具体工程实例,提出了今后在黄土塬区开展三维地震勘探的一些设想和建议。

Coalmine district 3D seismic prospecting technique already extensively popularized in plain, mountainous terrain, hillock, gobi and desert areas. Yet in loess tableland in western China, because of its special geomorphic features, complex geological conditions and relatively low degree of exploration, those areas are still regarded as 3D seismic prospecting ″fenced-off area″. Aimed at the situation, based on multiple experimentation, we adopted corresponding technical measures of to improve shooting conditions, multidomain iterative static correction and so on, have overcame main nodi to carry on 3D seismic prospecting in loess tablelands. To incorporate actual engineering examples, put forward some considerations and suggestions to develop 3D seismic prospecting in loess tablelands.