摘要
为了查明六家煤矿E1N_(4)6-7工作面构造分布和煤厚变化情况,保证矿井安全生产,根据E1N_(4)6-7工作面实际地质特征开展了三维数值模拟工作,在分析工作面槽波及频散特征的基础上开展了工作面透射槽波研究。研究结果表明,采用交错网格有限差分GPU并行法对基于实际地质特征的三维多岩层断裂模型实施弹性波场数值模拟,可揭示落差3 m断层的槽波能量变化;采用“全息采集”方式布设观测系统,可最大限度地接收有效槽波信号。透射槽波探测结果显示,E1N_(4)6-7工作面共存在3处断层和1处煤厚变薄区,共4处地质异常。工作面回采实际揭露情况与此次槽波探测结果吻合良好,验证了该方法的可靠性。研究为精细探测构造复杂地区的微小断层奠定了基础。
In order to ascertain the structure distribution and coal thickness changes of E1N_(4)6-7 working face in Liujia Coal Mine,and to ensure the safe production of the mine,the three-dimensional numerical simulation was carried out according to the actual geological characteristics of E1N_(4)6-7 working face.Based on the analysis of the characteristics of reflection trough wave and frequency dispersion,the transmission trough wave of the working face was studied.The results showed that the elastic wave field numerical simulation of the three-dimensional multi strata fault model based on the actual geological characteristics by using the staggered grid finite difference GPU parallel method can reveal the change of trough wave energy of the fault with a drop of No.3 coal seam.The"holographic collection"method was adopted to deploy the observation system,which can receive the effective trough wave signal to the maximum extent.The transmission trough wave detection results showed that there were 3 faults and 1 coal thickness thinning area in E1N_(4)6-7 working face,with a total of 4 geological anomalies.The actual situation of mining exposure of the working face was in good agreement with the detection results,which verified the reliability of the method and laid the foundation for fine detection of small faults in areas with complex structures.
作者
陈超
曹路通
Chen Chao;Cao Lutong(Liujia coal mines of Inner Mongolia Pingzhuang Energy Limited by Share Ltd.,Chifeng 024000,China;Coal Mining Research Institute Co.,Ltd.of CCTEG,Beijing 100013,China;Coal Mining and Design Department,Tiandi Science and Technology Co.,Ltd.,Beijing 100013,China)
出处
《能源与环保》
2021年第12期128-134,共7页
CHINA ENERGY AND ENVIRONMENTAL PROTECTION
基金
天地科技股份有限公司开采设计事业部“科技创新基金”专项(KJ-2021-KCQN-01)。
关键词
槽波地震
三维模拟
复杂构造
透射槽波
频散特征
CT成像
through wave detection
3D simulation
complex structure
transmission through wave
dispersion characteristics
CT imaging
