在TSP(隧道超前预报)中,对于前方地质体的探测是工程物探以及隧道工程中的重要的问题。但是在基于隧道模型进行全波场模拟时,隧道的复杂性又使得地震记录变得相对复杂而难以识别。而如果没有对前方地质情况有一定的了解,施工经常就会造成重大的损失。因此对本文利用交错网格有限差分法对基于隧道的模型进行各种不良地质体的模拟,对TSP常出现的地质体进行正演模拟并分析是有必要的。%While constructing tunnel, it's important to know what geological body in front of the tunnel. But seismic of TSP are complex usually because of the TSP observation system. Problems often occurred while we do not know the situation in front of tunnel. So we use staggered grid Finite difference method (FDM) to model varies of geological bodies based on TSP observation system.
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