王晓康,路拓

• 1:西安科技大学煤炭绿色开采地质研究院
• 2:陕西省煤炭绿色开发地质保障重点实验室

摘要(Abstract)：

巷道前方的地质异常与巷道内地震测线存在角度关系,依据地震超前探测原理,其反射波时距曲线为一直线且呈现负视速度特征。据此建立一采空区地震超前探测模型,以研究采空区条件下检波器后置观测系统的地震波场传播特征。通过对全空间地震波场的分析发现,距离震源越远的检波器越先接收到迎头前方异常界面的PP波与S-S波,为此采用τ-p域滤波或F-K域滤波对地震波场进行分离解释。以山西临汾某矿井2号煤层老窑采空区超前探测为例,通过反射波提取、绕射扫描及叠加偏移对巷道前方进行成像,解释迎头前方35m处存在异常,经钻探验证其为老窑采空区,取得了较好的应用效果。

关键词(KeyWords)： 地震超前探测;数值模拟;反射波;老窑采空区;钻探

Abstract:

Keywords:

基金项目(Foundation): 陕西省煤炭绿色开发地质保障重点实验室基础研究计划项目资助(MTy2019-15)

作者(Author): 王晓康,路拓

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