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从阳煤集团新景煤矿芦南二区北三正、副巷3煤层发生的瓦斯突出来看,该矿的瓦斯富集带主要位于煤层变薄缺失带附近。依据新景煤矿地质资料建立地质模型,并从理论上对提取的地震属性变化特征进行比较,发现其振幅、主频、低频带能量和相位等属性可以作为瓦斯富集带预测的判识依据。勘探成果表明,利用3煤层反射波提取的地震属性,在煤层变薄缺失带上具有明显的响应特征:振幅切片上能量变弱,相似性切片上异常突出,主频切片上表现为高值,主频带能量切片上表现为低值,平均频率相位切片上也存在较大差异振幅。依据该特征,圈定了新景煤矿芦南二区的煤层变薄缺失带。已发生瓦斯突出点与煤层变薄缺失带在地震属性的一致性,证实煤层变薄缺失带是该矿瓦斯防治的重点区域。
In view of the gas outburst occurred in No.3 coal seam of No.3 and No.2 of Lunan No.2 of Xinjing Coal Mine of Yangquan Coal Mine, the gas-rich zone of the mine is mainly located near the thinning and missing zone of coal seam. Based on the geological data of Xinjing Coalmine, the geological model was established and the characteristics of seismic attributes extracted were compared theoretically. The properties of amplitude, frequency, energy and phase in low frequency band can be used as the basis for the prediction of gas-rich zone. The exploration results show that the seismic attributes extracted from Ref. 3 coal seam have obvious response characteristics on the thinning and missing zone of coal seam: the energy on the amplitude slice is weak, the similarity slice is abnormally prominent, the frequency slice shows high value, The main band energy slice showed low value, the average frequency phase slice also has a larger difference amplitude. Based on this feature, the thinning and missing zone of coal seam in the Second Luonan area of Xinjing Coal Mine was delineated. The coincidence of the gas outburst and the thinning loss zone of the coal seam has occurred in seismic attributes. It is confirmed that the thinning and losing zone of the coal seam is the key area for gas prevention and control of this mine.