Abstract:Based on theory of longitudinal wave displacement equation by spherical source and relation of amplitude and frequency of explosive wavelet with charge size,etc,the paper summed up the quantitative relation of which particle displacement of tongitudinal wave is in proportion to charge size and which mean-square-root of amplitude spectrum is in proportion to square root of cavity radium cube.On that basis,the vertical-lapse stack source,energy-concentrated bullet and explosive seismic hammer source have been developed. Through controlling filling style and explosive speed of powder,the verticallapse stack source get optimal matching with surrounding rock,maximum use exploded energy and produced seismic signal rich in high-frequency energy;adapted the principle of oriented energy-concentration,theenergy-concentrated bullet source concentrated the exploded energy downward which reduced the chock to surface;the explosive seismic hammer source projects hammer to strike surface by blast,the explosive seismic wave has higher frequency and makes up for shortcoming of lower utilization ratio for energy-concentrated bullet source.All these three sources are adaptable to seismic exploration for different surface condition and geologic job,and get good applied results.
赵殿栋, 谭绍泉, 张庆淮, 吕公河, 徐锦玺. 地震勘探中特殊震源的研制与应用[J]. 石油地球物理勘探, 2001, 36(4): 383-389.
Zhao Diandong. Development and application of special source in seismic exploration. OGP, 2001, 36(4): 383-389.