陕西煤炭2024，Vol.43Issue(2)：22-26,38,6.DOI:10.20120/j.cnki.issn.1671-749x.2024.0205
陡倾角单斜地层地震勘探观测系统设计及其应用
Design and application of seismic exploration observation system for steep dip and monoclinal strata
薛海军 1李亮 2汶小岗 1吴大林 2徐换霞2
作者信息
- 1. 陕西省煤田物探测绘有限公司,陕西 西安 710005||自然资源部煤炭资源勘查与综合利用重点实验室,陕西 西安 710026
- 2. 陕西省煤田物探测绘有限公司,陕西 西安 710005
- 折叠
摘要
Abstract
The coal resources with the dip angle of greater than 30 degrees in the western region of China are quite consider-able.In order to improve the quality of seismic exploration and acquisition data in steep dip coal fields,we study and analyze the time-distance curve characteristics of seismic reflection waves in inclined strata,and establish a steep dip monoclinic ge-ological model to design three different observation systems(midpoint shooting,lower-dip direction shooting,upper-dip direc-tion receiving,and upper-dip direction shooting,lower-dip direction receiving).At the same time,the ray tracing method is used for seismic wave field forward simulation.By comparing and analyzing the seismic wave field and superposition time profile characteristics for three different observation systems,a design method suitable for seismic exploration observation systems in steep dip monoclinic strata is summarized.The design method of seismic exploration observation system suitable for steep inclined strata has been applied to practical seismic exploration data acquisition work,achieving ideal seismic data.关键词
地震勘探/陡倾角/单斜地层/观测系统/反射波时距曲线Key words
seismic exploration/steep dip angle/monoclinal strata/observation system/reflection wave time-distance curve分类
天文与地球科学引用本文复制引用
薛海军,李亮,汶小岗,吴大林,徐换霞..陡倾角单斜地层地震勘探观测系统设计及其应用[J].陕西煤炭,2024,43(2):22-26,38,6.
