新疆阿舍勒金属矿地震资料有效处理技术及应用  

Effective processing technology and application of seismic data in Ashele metal mine,Xinjiang

作　　者：李广才 王兴宇 王小江[1,2] 王通 LI Guangcai;WANG Xingyu;WANG Xiaojiang;WANG Tong(Institute of Geophysical and Geochemical Exploration,Chinese Academy of Geological Sciences,Langfang 065000,Hebei,China;National Center for Geological Exploration Technology,Langfang 065000,Hebei,China)

机构地区：[1]中国地质科学院地球物理地球化学勘查研究所,河北廊坊065000 [2]国家现代地质勘查工程技术研究中心,河北廊坊065000

出　　处：《矿产勘查》2024年第10期1798-1811,共14页Mineral Exploration

基　　金：中国地质调查局项目(DD20230298、DD20243070);中国地质科学院基本科研业务费项目(AS2020J03);物化探所中央财政科研项目结余资金资助项目(JY202103)联合资助。

摘　　要：在新疆阿舍勒开展金属矿地震勘探,因特殊地表和地下地震地质条件,原始地震记录中夹杂各类干扰波,资料信噪比较低,获取高质量成像存在一定困难。针对实际情况,分析了原始地震资料及干扰波特征,在此基础上,设计了有效处理方案。首先利用静校正技术消除了地形起伏及低速带的影响;采用多域联合去噪压制面波、声波、线性噪声以及机械振动等干扰,通过参数调试对比分析,找到适合该金属矿区的去噪参数;结合速度分析和剩余静校正技术,解决了短波长静校正问题,获取了可靠的叠加速度,提高了同相叠加效果,为后续资料解释提供了良好基础。研究表明,在新疆阿舍勒金属矿区利用静校正、叠前串联去噪和速度分析等关键处理技术适应性较强,可为处理此类地区金属矿地震资料提供一定参考。Due to the special surface and underground seismic geological conditions,it is quite difficult to obtain high-quality imaging in Ashele,Xinjiang.For the fact that the raw seismic records are mixed with various interference waves,the signal-to-noise ratio of the data is low.According to the actual scenarios,the raw seismic data and the characteristics of interference waves are analyzed,and an effective processing scheme is designed.First,the influence of topographic relief and low deceleration zones is eliminated by static correction technology.The interference of surface wave,acoustic wave,linear noise and noise from mechanical vibration is suppressed by multi-domain joint denoising.Through parameter debugging and comparative analysis,the denoising parameters suitable for this metal mining area are found.Combined with velocity analysis and the residual static correction technology,the problem of short-wavelength static correction is solved,and reliable stacking speed is obtained,which improves the effect of in-phase stacking and provides a good foundation for subsequent data interpretation work.The research shows that the key processing technologies including static correction,pre-stack series denois-ing and velocity analysis have strong adaptability in Ashele metal mining area in Xinjiang,which can provide some reference for seismic data processing of metal mines in such areas.

关 键 词：金属矿地震勘探 信噪比 静校正 叠前去噪 速度分析 

分 类 号：P631[天文地球—地质矿产勘探]