摘要
为了解决致灾地质因素难以准确探测的问题,采用了地震槽波勘探技术对义安矿业11061工作面进行了煤层厚度和断层等致灾地质因素的探测。通过对频散曲线的分析,选取适宜的槽波频率,对槽波波列进行短时傅里叶变换,在频率域内提取槽波旅行时并进行CT成像,获取槽波波速等值线图,将波速与实际揭露的煤层厚度进行拟合后获得煤层等厚线图;通过对槽波射线分布图进行分析,确定工作面内没有落差大于1/2煤厚的断层。通过回采验证,实际回采情况与勘探结果基本一致,矿方根据勘探成果对局部防突措施进行了优化,回采过程中未出现瓦斯异常涌出的情况;根据煤层厚度变化调整了月度生产计划,确保了产量的稳定。
In order to solve the problem that it is difficult to accurately detect the geological factors causing disasters, the seismic channel wave exploration technology is used to detect the geological factors such as the thickness of coal seam and faults in 11061 working face of Yi’an Mining Industry. Through the analysis of the dispersion curve, we select the appropriate channel wave frequency, carry out short-time Fourier transform on the channel wave train, extract the traveling time of the channel wave in the frequency domain and carry out CT imaging, obtain the isoline map of the channel wave speed, fit the wave speed with the actual exposed thickness of the coal seam, and then obtain the isopach map of the coal seam;through the analysis of the channel wave ray distribution map, it is determined that there are no faults within the working face with a drop greater than 1/2 coal thickness.Through the mining verification, the actual mining situation is basically consistent with the exploration results. The mine optimizes the local outburst prevention measures according to the exploration results, and there is no abnormal gas emission during the mining process;the monthly production plan is adjusted according to the thickness change of the coal seam to ensure the stability of the production.
作者
金明方
张高青
徐锟
姚小帅
赵红利
JIN Mingfang;ZHANG Gaoqing;XU Kun;YAO Xiaoshuai;ZHAO Hongli(Guizhou Nengfa Gaoshan Mining Co.,Ltd.,Bijie 551700,China;Henan Energy and Chemical Industry Group Research Institute Co.,Ltd.,Zhengzhou 450000,China)
出处
《煤矿安全》
CAS
北大核心
2021年第1期103-106,共4页
Safety in Coal Mines
关键词
地震槽波
致灾
地质因素
煤厚探测
断层探测
seismic channel wave
disaster causing
geological factors
coal thickness detection
fault detection
