论文部分内容阅读
宁东煤田某矿区的三维地震勘探,浅表层地震地质条件复杂,采用常规钻机成孔比较困难、成本过高。为完成地质任务,提高地震勘探应用效果,从改善激发条件入手,结合生产实践,对炸药震源和可控震源两种激发源作了对比试验。通过试验点和试验线的资料对比分析,可控震源激发效果优于炸药震源。采用可控震源施工的勘探成果经后期巷道验证,其成果吻合度较高。
The 3D seismic exploration in a mining area of Ningdong coalfield and the complicated geological conditions of shallow surface earthquakes make it more difficult and costly to drill holes with a conventional drilling machine. In order to complete the geological task and improve the seismic exploration application effect, starting from improving the excitation conditions, combined with the production practice, the two sources of explosives and controlled sources were compared. By comparing the data of test point and test line, the effect of vibroseis excitation is better than the explosive source. The exploratory results of construction using vibroseis have been verified by later tunnels and the results are in good agreement.