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三维地震勘探是一种面积勘探方法，观测系统形式很多，常用的线束型三维观测系统，由于其排列片狭长，存在方位角分布不均匀的弊端。为了改善面元的方位角分布特性，笔者于 99年 8月提出了一种新型三维观测系统设计法，又称之为成组加密法宽方位三维观测系统设计方法。文中系统叙述了该方法的设计原理，并对其主要设计参数进行了理论分析。该设计方法在徐州张双楼煤矿三维地震勘探中首次投入使用，取得了很好的技术效果和显著的经济效益。
Three-dimensional seismic exploration is an area exploration method. There are many forms of observation system. The commonly used three-dimensional observation system of wire harness has shortcomings of uneven azimuthal distribution due to its long and narrow arrangement. In order to improve the azimuth distribution of the bin, the author proposed a new method for the design of three-dimensional observing system in August 1999, which is also called the design method of group-wise binarization and wide azimuth three-dimensional observation system. The paper systematically describes the design principles of the method, and the main design parameters of a theoretical analysis. The design method is put into use for the first time in the 3D seismic exploration of Zhangshoulou Coal Mine in Xuzhou and has achieved good technical effects and significant economic benefits.