准噶尔盆地南缘山前带激发因素分析

Discussion on shooting factors in the foothill in southern Junggar Basin.

改善野外单炮资料品质就是要提高单炮的能量,保护高频能量,提高信噪比。激发药量、井深及激发层速度是改善野外单炮资料品质的3个关键因素。通过对准噶尔盆地南缘灰岩及黄土夹砾石区的激发因素的分析研究,确定了较为合理的激发药量及井深与激发层速度的匹配关系。

Improving the quality of single shot record requires increasing the dose of explosive,which in turn achieves the goals protecting the energy of high frequency signals and improving signal-to-noise ratio.The dose of explosive,the depth of shot hole,and the velocity of the shooting layer are 3 key factors controlling the quality of field single shot record.Through the investigation of shooting factors in areas of limestone as well as mixed loess and gravel,we determined the relationships between dose of explosive,depth of shot hole,and velocity of shooting layer suitable for the foothill zone in southern Junggar Basin.