摘要
槽波地震勘探技术在工作面采前精确查明隐蔽致灾地质因素方面已经取得了较好的应用效果,但针对我国各个矿区的槽波发育特征的系统性研究较少。笔者通过建立不同煤厚、不同矿区对应的不同围岩速度的三维数值模型进行正演模拟,研究槽波赋存发育特征,再以主要矿区37个煤矿实际槽波数据,统计分析得出我国主要矿区煤层槽波赋存发育特征。研究表明,在同一大区域相邻矿区内,由于含煤地层相近,槽波埃里相速度及频率相近;槽波波速与围岩波速呈反相关,围岩速度越高,槽波埃里相速度越低;矿区构造发育与煤层槽导条件有关,构造相对简单的地区槽波发育较好。研究结果可为槽波实际资料的解释、分析提供参考依据。
The channel wave seismic exploration technology has been applied to find out the geological factors of hidden disaster before mining.But at present,there is few research on the occurrence and characteristics of channel wave in main mining areas of China.In this paper,numerical models of different surrounding rocks corresponding to different mining areas are established for forward modeling.Then,based on the actual channel wave data of nearly 40 coal mines,the statistical analysis of the data is carried out,and the occurrence and development characteristics of the channel wave are obtained.The results show that the velocity and frequency of the channel wave are similar in the same large area because of the similar strata.The channel wave velocity is negatively related to the surrounding rock wave velocity.The structure development of the mining area is related to the conditions of the coal seam channel wave conductivity,and in the area with simple structure,the occurrence of channel wave is better.The results can be used as a reference for the interpretation and analysis of practical data.
作者
苏晓云
SU Xiao-yun(Xi'an Research Institute Co.,Ltd.,China Coal Technology and Engineering Group,Xi'an 710077,China)
出处
《煤炭工程》
北大核心
2020年第10期137-142,共6页
Coal Engineering
基金
国家重点研发计划课题(2018YFC0807804)
中煤科工集团西安研究院有限公司科技创新基金项目“复合煤层槽波探测解释技术研究”(2019XAYMS29,2019XAYQN02)。
关键词
槽波
主要矿区
赋存
发育特征
channel wave
main mining areas of China
occurrence
development characteristics
