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对自河北文安经山西大同至内蒙古岱海的宽角反射／折射地震剖面资料进行了详细的研究。结果表明，地壳厚度由太行山山前地带的３６．０ｋｍ向山西高原增厚至４４．０ｋｍ。在太行山山前基底断裂、紫荆关断裂的下方和大同盆地的东侧存在着延伸至莫霍面的断裂带；太行山隆起区上地幔顶部的速度偏高，太行山山前地带和大同震区上地壳的下部有强烈的速度反转，大同地震与这里的异常的壳幔构造有关，太行山山前地带存在着发生潜在地震的深部构造条件。
The data of wide-angle reflection / refraction seismic profiles from Wen’an, Hebei via Datong in Shanxi Province to Daihai in Inner Mongolia were studied in detail. The results show that the crust thickness thickened from 36.0km in the Taihang Mountains to the Shanxi Plateau to 44.0km. There is a fault zone extending to the Moho along the footwall of the Taihang Mountains, beneath the Zijinguan fault, and east of the Datong Basin. The top of the upper mantle in the uplift area of the Taihang Mountains is at a high velocity. The upper Taihang Mountains and the upper crust of the Datong Earthquake In the lower part of the Taihang Mountains, there is a strong speed reversal. The Datong earthquake is related to the anomalous crust-mantle structure here. There are deep tectonic conditions in the Taihangshan piedmont where potential earthquakes occur.