三维观测系统优化在复杂区块的应用  

Application of 3D observation system optimization in complex blocks

作　　者：张昭 田锦瑞 尹文斌 耿晓兵 张龙飞 Zhang Zhao;Tian Jinrui;Yin Wenbin;Geng Xiaobing;Zhang Longfei(Physical Survey and Geology Team,Hebei Coalfield Geology Bureau,Xingtai 054000,China;Xiaojihan Mine,Shaanxi Huadian Yuheng Coal and Power Corporation Ltd.,Yulin 719015,China)

机构地区：[1]河北省煤田地质局物测地质队,河北邢台054000 [2]陕西华电榆横煤电有限责任公司小纪汗煤矿,陕西榆林719015

出　　处：《煤炭与化工》2021年第5期47-50,共4页Coal and Chemical Industry

摘　　要：随着煤矿采区三维地震勘探市场的快速发展,目前已经进入高分辨率三维地震勘探为主的时期,在地震地质条件复杂区块开展地震勘探工作,不仅要考虑覆盖次数,还需综合考虑目的层埋深、地表复杂性、施工效率等问题,对三维地震勘探观测系统的设计提出了更高的要求。以毛乌苏沙漠与陕北黄土高原接壤地带勘探区三维地震勘探实例,将常规的束状观测系统优化为砖墙式观测系统。从分析对比来看,改善偏移距分布,实现了炮检对全方位均匀分布,减小采集步长,削弱采集脚印,确保采集资料的品质,提高了施工效率,取得了良好的效果。With the rapid development of the 3D seismic exploration market in mining areas,the period of high-resolution 3D seismic exploration has now entered.To carry out seismic exploration in blocks with complex seismic geological conditions,it is necessary to consider not only the number of coverage times,but also the depth of burial of the target layer,the complexity of the ground surface,and the construction efficiency,which give higher requirements for the design of 3D seismic exploration observation system.Taking the example of 3D seismic exploration in the exploration area of the border zone between Mao’u’su Desert and the Loess Plateau in northern Shaanxi,the conventional beam observation system was optimized into a brick-wall observation system.From the analysis and comparison,it improved the offset distance distribution,realized the uniform distribution of gun inspection pairs in all directions,reduced the acquisition step length,weakened the acquisition footprint,ensured the quality of acquisition data,improved the construction efficiency,with good results.

关 键 词：观测系统 方位角 砖墙式 炮检距 偏移孔径 

分 类 号：TD163[矿业工程—矿山地质测量]