宁东煤田炸药震源和可控震源的研究

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。

Comparative Application Study on Dynamite Source and Vibrator in Ningdong Coalfield

3D seismic exploration of a mining area in Ningdong Coalfield shows that seismic geological condition is complex in shallow strata,conventional drilling is more difficult and the cost is too high.In order to complete the geological tasks and improve the application efficiency of seismic exploration,a comparative test was made between dynamite source and Vibrator from start to improve excitation condition and combine with production practice.By comparing and analyzing the data of testing point and testing line,it can be concluded that the excitation efficiency of vibrator is better than that of dynamite source and the coincidence degree of exploration results is higher.