The size of roadway section depends mainly on its use.
巷道断面尺寸主要取决于巷道的用途。
The shape of roadway section depends mainly on strata conditions, the serving life and supporting materials.
巷道断面形状主要取决于地层条件、服务年限和支护材料。
The method in which the roadway section located in roof center line possesses some excellences such as easy realization, fast modeling and good modeling effect.
顶板中心线加断面法容易实现，建模速度快，效果较好；
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