Abstract：The surface in Kulongshan mountainous area of Jiuquan Basin is characteristics of outcropping ancient formation, lack of water table or extreme deep water table, precipitous topography and developed surface fractures, which made shooting conditions poorer and seriously affected the selection of shooting parameters in the region. Analyzing ghost mechanism, the paper presented the acquisition method fully using ghost energy to design the optimum shooting depth and strengthen the energy of down-propagating seismic waves. As concerns of the issue of long dynamite column, the writer analyzed theoretically the mutual relationship between the length of dynamite column and seismic response, and also considered the issue of across-layer shooting by long dynamite column at the same time, from which we concluded that across-layer shooting is unfavorable for shooting low-frequency seismic waves and it should make our efforts to shoot in same velocity layer.
