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多次迭加是压制多次波和其它类型干扰波,加强一次反射波,提高讯噪比的一种方法。目前煤田地震勘探在日趋磁带化的情况下,也在应用这一方法来提高勘探效果。下面根据煤田勘探的特点,提出几个问题来讨论,以便更好地应用多次迭加来提高勘探精度。一、排列大小煤田地震勘探通常是解决-1000米以内的地质构造问题,因而煤田地震勘探属于浅层勘探。按照浅层勘探的特点,观测排列一般都不大。然而在应用多次迭加来压制规则
Multiple superimposition is a method of suppressing multiple waves and other types of interference waves, enhancing a reflected wave and improving signal-to-noise ratio. At present, coalfield seismic exploration is becoming more and more tapey, and this method is also being applied to improve exploration results. According to the following characteristics of coalfield exploration, put forward several issues to discuss in order to better use multiple superimposed to improve exploration accuracy. First, the arrangement size Coalfield seismic exploration is usually to solve the problem of geological structure within -1000 meters, so coalfield seismic exploration belongs to shallow exploration. According to the characteristics of shallow exploration, the observation arrangement is generally not large. However, applying multiple overlays to suppress the rule