三维观测系统覆盖次数计算方法研究  

Research on the Computation Method of Fold Number of the 3D Observation System

作　　者：闫江平 庞长庆 高振宇 Yan Jiangping;Pang Changqing;Gao Zhenyu(CHN Energy Shendong Coal Group Buertai Coal Mine,Erdos,Inner Mongolia,017000)

机构地区：[1]国家能源集团神东煤炭集团公司布尔台煤矿,内蒙古鄂尔多斯017000

出　　处：《能源科技》2021年第4期27-30,33,共5页Energy Science and Technology

摘　　要：覆盖次数是三维观测系统的重要参数之一,正交观测系统的覆盖次数由纵向和横向2部分组成,其中纵向覆盖次数计算方法与二维相同,但横向覆盖次数的计算较为复杂。而非正交观测系统的覆盖次数计算方法目前阐述较少。本文以三维正交观测系统为例,系统阐述了4种横向覆盖次数的计算方法:综合平面图法、公式法、坐标法、Z变换法。对比分析了各种方法的优缺点及适用条件,然后根据坐标法和Z变换法的特点,研究了非正交观测系统覆盖次数的计算方法,并通过斜交观测系统对该方法进行了验证。Fold number is one of the key parameters of the 3D observation system.The fold number of the orthogonal observation system is composed of two parts:longitudinal and lateral.The computation method of the longitudinal fold number is the same as that of the 2D observation system,but the computation of the lateral fold number is more complicated.However,the computation method of fold number of the non-orthog⁃onal observation system is currently seldom elaborated.Taking the 3D orthogonal observation system as an ex⁃ample,this article systematically expounds four methods for computing the lateral fold number:comprehen⁃sive plane diagram method,formula method,coordinate method,and Z-transform method.The advantages and disadvantages and applicable conditions of these methods are compared and analyzed.Then,based on the characteristics of the coordinate method and the Z-transform method,this article studies the computation method of fold number of the non-orthogonal observation system,and verifies this method by the oblique ob⁃servation system.

关 键 词：三维地震 正交系统 非正交系统 覆盖次数 

分 类 号：P631.4[天文地球—地质矿产勘探]