Through analysis on theory, the author finds the basic regularity in transmitting the supporting force by the arch supporting force of tunnel with circular arch section.
通过细致的理论分析，笔者初步找出了圆拱状断面隧道拱壁支承力传递的基本规律。
The author, with his practice in his long working time , discover some blemish in the traditional way of analysis on arch supporting force of tunnel with circular arch section.
笔者在长期的工程实践中发现，传统的圆拱状断面隧道承压能力分析方法有一定的缺陷，圆拱状断面隧道拱壁支承力的传递有一定的规律可循。
The dodecahedron gave the tunnel enough of a circular shape in section.
使得隧道有足够的圆形截面。
All tunnels have complex cross section with circular, rectangle, arch, ellipse shape, in accordance with the length of the tunnel is divided into short, medium length of the tunnel, long tunnel.
隧道按截面分为圆形、矩形、拱形、椭圆等形状，按照长度分为短隧道、中等长度隧道、长隧道。
For tunnel sections with good surrounding rocks, the U-shaped rock-bolted section is selected as a final optimized section instead of the original circular reinforcement concrete lining section.
对隧洞围岩条件良好洞段，论证取消隧洞原圆形钢筋混凝土衬砌，选定马蹄形锚喷断面作为最终优化断面形式。
For tunnel sections with good surrounding rocks, the U-shaped rock-bolted section is selected as a final optimized section instead of the original circular reinforcement concrete lining section.
对隧洞围岩条件良好洞段，论证取消隧洞原圆形钢筋混凝土衬砌，选定马蹄形锚喷断面作为最终优化断面形式。
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