论文部分内容阅读
陇东地区黄土层厚且疏松、冲沟发育、地形起伏剧烈,具有复杂的表、浅层地震地质条件。不仅如此,作为主要勘查对象的煤层埋深大都上千米。针对这些地震勘探工作中的不利因素,依据试验结果,确定了多井组合大药量激发、多个检波器组合检波、多道接收的激发与接收参数。同时,设计的10线25炮观测系统具有高叠加次数、宽方位角接收、炮检距较大等优点,观测系统各项参数均能够满足三维地震勘探野外数据采集要求。实践证明,这种方法是行之有效的,取得了较好的地震、地质效果,为矿井建设和生产提供了可靠地质依据。
Longdong loess layer thick and loose, gully development, terrain undulating dramatic, with complex table, shallow seismic geological conditions. Not only that, as the main exploration of the coal seam buried for most kilometers. According to the unfavorable factors in these seismic exploration work, according to the test results, the excitation and reception parameters of multi-well combination high-dose excitation, multiple detector combination detection and multi-channel reception are determined. At the same time, the designed 10-line and 25-gun observation system has the advantages of high stacking times, wide azimuth reception and large offset distance. All the parameters of the observation system can meet the requirements of field data acquisition of 3D seismic exploration. Practice has proved that this method is effective and has achieved good seismic and geological effects, providing a reliable geological basis for mine construction and production.