【摘要】 在地震勘探中 ,观测系统设计至关重要。本文针对转换波传播的特点 ,介绍了转换波最小炮检距、最大炮检距和道间距的确定方法。采用常规面元尺寸对转换波覆盖次数进行了计算、分析 ,结果表明常规纵波面元尺寸不适合转换波 ,转换波面元尺寸与速度比值有关。通过分析发现 ,转换波覆盖次数的均匀性还受到炮点与检波点相对位置关系的影响 ,炮点位于接收线束两端时的覆盖次数要比炮点位于接收线束中间的覆盖次数更为均匀。在观测系统设计过程中还要考虑方位角、炮检距等分布规律的影响。更多还原

【Abstract】 Setup design in seismic exploration is very important.Aimed at the characters of converted wave propagation,the paper introduced the defined method for minimum offset, maximum offset and group interval of converted wave.Adopting the ordinary P wave bin size to calculate the multiplicity of converted wave shows that it is unsuitable for converted wave and bin size of converted wave is related to ratio of velocity.We discovered after analysis that uniformity of multiplicity of converted wave is affected by the relative positions between shot and receiver,the multiplicity that shot lays on both ends of receiving swath is more uniform than that shot lays in middle of receiving swath.In a process of setup design it must consider the influence of distributing rule of azimuth and offset.更多还原