矿井煤与瓦斯突出弹性波特征评价及其应用
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摘要
采用多波地震勘探与常规的煤与瓦斯突出危险性预测技术相结合方法,分析了突出煤体弹性波响应特征。结果表明:多波地震探测能够以数据和剖面图形方式,给出巷道前方地质构造及异常预报结果;煤层的地球物理属性变化大小主要表现为煤层中物性变异界面多少,煤层中存在的物性变异处,正是瓦斯容易富集区;弹性波频谱分析对煤岩体结构特征解释具有很好的针对性,对每一道波形的波谱特征进行具体的研究,利用吸收系数、品质因子等多个参量进行计算与对比,建立常规的突出危险性评价指标与地震波波谱特征的关系。
With the combination of the multi wave seismic exploration and the conventional coal and gas outburst danger prediction tech- nology,the paper analyzed the elastic wave response features of the outburst coal mass.The results showed that with the data and section profile,the multi wave seismic survey could provide the front geological tectonics and abnormal prediction results of the mine roadway. The variation of the seam geophysical attribution could be mainly expressed by the substance variation interface number in the seam.The substance variation place existed in the seam would be the gas enriched zone.The elastic wave spectrum analysis had an excellent perti- nence to explain the coal petrology structure features.A certain research on the wave spectrum of each wave form was conducted.Calcula- tions and comparisons were made on the absorption coefficient,quality factors and other parameters to establish the relationship between the conventional outburst dangerous assessment index and seismic wave spectrum features.
With the combination of the multi wave seismic exploration and the conventional coal and gas outburst danger prediction tech- nology,the paper analyzed the elastic wave response features of the outburst coal mass.The results showed that with the data and section profile,the multi wave seismic survey could provide the front geological tectonics and abnormal prediction results of the mine roadway. The variation of the seam geophysical attribution could be mainly expressed by the substance variation interface number in the seam.The substance variation place existed in the seam would be the gas enriched zone.The elastic wave spectrum analysis had an excellent perti- nence to explain the coal petrology structure features.A certain research on the wave spectrum of each wave form was conducted.Calcula- tions and comparisons were made on the absorption coefficient,quality factors and other parameters to establish the relationship between the conventional outburst dangerous assessment index and seismic wave spectrum features.
引文
[1]朱国维．三分量地震数据采集系统的研究与开发[D]．徐州：中国矿业大学，2003．
[2]吕绍林，何继善，李舟波，等．瓦斯突出地球物理场的响应特征[J]．长春科技大学学报，2001(1)．
[3]朱国维，彭苏萍，王怀秀．新型智能三分量地震检波器的研制与应用[J]．煤炭学报，2006(增)．
[4]张平松，刘盛东．煤岩体结构构造特征的频谱分析与应用[J]．工程地球物理学报，2006(4)．
[5]刘盛东，赵秋芳，张平松，等．煤体瓦斯特征与震波参数关系的试验研究[J]．煤炭科学技术，2005(1)．
[6]赵秋芳．煤层震波参数测试与研究[D]．淮南：安徽理工大学，2005．
[2]吕绍林，何继善，李舟波，等．瓦斯突出地球物理场的响应特征[J]．长春科技大学学报，2001(1)．
[3]朱国维，彭苏萍，王怀秀．新型智能三分量地震检波器的研制与应用[J]．煤炭学报，2006(增)．
[4]张平松，刘盛东．煤岩体结构构造特征的频谱分析与应用[J]．工程地球物理学报，2006(4)．
[5]刘盛东，赵秋芳，张平松，等．煤体瓦斯特征与震波参数关系的试验研究[J]．煤炭科学技术，2005(1)．
[6]赵秋芳．煤层震波参数测试与研究[D]．淮南：安徽理工大学，2005．
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