Combined with field tests and numerical simulation, the size of section pillar is proved to be reasonable and the feasibility of driving without section pillar is also studied.
同时通过实测与模型计算相结合，验算了区段煤柱留设尺寸的合理性，并在此基础上探讨了沿空掘巷无煤柱开采的可行性。
Shade the resulting surfaces in tangent continuity is not good enough all over the surface create more section along the pillar to guide more precisely the surface creation.
阴影所产生的表面相切的连续性不够好各地创造更多的表面沿节的支柱，以指导更精确的表面创造。
Install the pillar on the second standard section, and fix it with the screw.
在第二个标准节上端装上顶梁，并用螺栓固定好。
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