基于地震多属性技术解释煤层冲刷变薄  

Interpretation of the Thinning of Coal Seam Scouring Zone Based on Seismic Multi-attribute Technology

作　　者：张昭 邱兆泰 田锦瑞 牛清华 张晓盼 张灯亮 曹秀森 台立勋 段刚 耿晓兵 Zhang Zhao;Qiu Zhaotai;Tian Jinrui;Niu Qinghua;Zhang Xiaopan;Zhang Dengliang;Cao Xiusen;Tai Lixun;Duan Gang;Geng Xiaobing(Geophysical Survey Team of Hebei Province Coal Geological Bureau,Xingtai,Hebei 054000)

机构地区：[1]河北省煤田地质局物测地质队,河北邢台054000

出　　处：《中国煤炭地质》2022年第11期63-68,共6页Coal Geology of China

基　　金：河北省省级一般公共预算财政资金项目(21XH03)。

摘　　要：煤层厚度变化是影响煤炭开采的重要因素,它不仅影响采掘部署和生产计划,还易造成回采率减低。以济宁三号煤矿采区三维地震勘探为例,基于地震数据对储层的厚度、范围、地质状况和应力等地质因素进行分析,应用地震属性技术,开展储层横向预测对煤层冲刷变薄进行了确定。研究表明,通过对地震数据体进行均方根振幅、最大振幅、频谱总能量和体反射谱四种属性的提取对比,得到了勘探区内煤层冲刷变薄区域的分布范围。经矿方验证,吻合率较高,提高了解释煤层冲刷变薄的准确性和可信度。The variation of coal seam thickness is the important affect factor on coal mining procdure,which not only affects mining deployment plan,but also leads to the reduction of recovery rate.Taking the 3D seismic exploration in Jining No.3 coal mining area as an example,this paper analyzes the geological factors such as reservoir thickness,distribution range,geological setting,and underground stress,carries out lateral reservoir prediction to determine the scouring zone of the seam by the seismic multi-attribute technology.The study shows that the distribution range of coal seam scouring thinning area in the exploration area is obtained by extracting and comparing four attributes of seismic data volume:root-mean-square amplitude,maximum amplitude,spectral total energy,and volume reflection spectrum.The results meets well with actuality from the mine,which verifies the accuracy and reliability of explanation for the thinning of coal seam scouring zone.

关 键 词：煤层厚度变化 三维地震勘探 地震属性技术 

分 类 号：P618.11[天文地球—矿床学]