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我国中部和西北部部分地区,煤层埋藏深度一般较浅,地表较为复杂,地形起伏大,高程的剧烈变化会影响基准面的选取。而基准面选取不合适,其危害一是严重影响叠加效果,二是致使构造形态发生畸变,更影响后期资料解释的可靠性。要消除这种影响,必须在静校正处理时选取合理的基准面。针对3种水平基准面的选择方法,通过模型进行计算,分析其优缺点。同时依托陕西韩城某工区进行对比,选取适合该区的基准面,效果较好。
In central and northwestern part of our country, the depth of coal seam burial is generally shallow, the surface is more complicated, the terrain is undulating, and the drastic changes in elevation will affect the selection of datum. The datum selection is not appropriate, the harm is a serious impact on the superposition effect, the second is to cause structural distortion, but also affect the reliability of post-interpretation. To eliminate this effect, you must select a reasonable datum for static correction. According to the selection method of three kinds of horizontal datum, the model is used to calculate and analyze the advantages and disadvantages. At the same time, relying on a work area in Hancheng, Shaanxi Province for comparison, select the suitable reference surface for the area, the effect is better.