房柱式小窑采空区地震探测研究
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摘要
在关停不具备安全生产条件的小煤矿中,多数采用房柱式开采方式。该方式下产生的采空区周围并未出现大的物理变形,因此常规的地震勘探方法和解释手段很难准确圈定其采空区范围。为此在鄂尔多斯高原选择已知采空区块为试验区,采用高密度三维地震观测系统,在高保真处理的基础上,利用方差顺层切片及综合层属性切片,准确地解释出采空区的范围。试验证明,地震属性的综合运用是识别房柱式采空区的有效手段。
The small coalmines do not possess conditions of safety in production,thus need to be closed down,most of them using room and pillar mining.Around gob areas generated by this kind of mining,large physical deformations have not come forth,thus conventional seismic prospecting methods and interpretation means are difficult to delineate gob area limits.Thus a known gob area sector in the Ordos Plateau has been selected as a test region,using high density 3D seismic field setup,based on hi-fi processing,variance bedding slice and integrated bed attribute slice have been used to interpret gob area limits accurately.The test has proved that the integrated use of seismic attributes is an effective means to identify gob area in room and pillar mining coalmines.
The small coalmines do not possess conditions of safety in production,thus need to be closed down,most of them using room and pillar mining.Around gob areas generated by this kind of mining,large physical deformations have not come forth,thus conventional seismic prospecting methods and interpretation means are difficult to delineate gob area limits.Thus a known gob area sector in the Ordos Plateau has been selected as a test region,using high density 3D seismic field setup,based on hi-fi processing,variance bedding slice and integrated bed attribute slice have been used to interpret gob area limits accurately.The test has proved that the integrated use of seismic attributes is an effective means to identify gob area in room and pillar mining coalmines.
引文
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