马家滩矿三维地震勘探技术应用

Application of 3D Seismic Exploration Technology on Majiatan Coalmine

勘探区地处毛乌素沙漠西南边缘,属于地震地质条件特别复杂区。经过试验确定适合勘探区的最佳激发与接收参数,利用人工合成地震记录与地震时间剖面匹配的方法标定各煤层地震反射波,通过处理解释,查明了区内控制煤层赋存形态的背斜和向斜的展布情况,控制了各煤层的起伏形态及埋藏深度,圈定了各煤层的露头范围、断层、古河床及古隆起的影响情况。本次三维地震勘探工作取得了较好的地质效果,为矿井建设和生产提供了重要依据。

The exploration area is located at the southwest edge of Mao Wusu Desert,which belongs to the particularly complex area of seismic geological miscellaneous parts.After the test to determine the best excitation and reception parameters suitable for the exploration area,using synthetic seismic record and seismic time profile matching method to calibrate the seismic reflection wave of each coal seam,through the processing and interpretation,the spreading situation of the dorsal and oblique slopes in the area which control the storage pattern of coal seams,controlling the undulation pattern of each coal seam and the depth of the buried coal,and circling the range of outcrops of coal seam,the influence situation of the faults,the ancient riverbed and the ancient upheaval.The influence of faults,ancient river beds and ancient uplift was determined.The 3D seismic survey achieved good geological results and provided an important basis for mine construction and production.