半圆拱

提高半圆拱巷道断面利用率及优化计算方法

Increasing the utilization of arched roadway section and calculating method of optimum

刚粘塑性半圆拱在落锤冲击下的大变形响应

Large Viscoplastic Deformation of a Semicircular Arch under Impact

马蹄形或方环形支架要比半圆拱等支护形式好。

Supports of square annular shape or " U " shape are better than supports of semicircle arch .

本文分析了目前矿井半圆拱巷道断面利用率较低的问题，并指出了现有设计计算方法上的不足点；

This paper is analysised currently by the lower utilization of arched roadway section , and indicated that to-day the lack of the planned calculating method ;

应用数值模拟的结论，在现场进行了方环形支架与半圆拱支架的对比试验，取得了较好的效果。

When applied in the contrast experiment to square annular supports and semicircle arch supports , the conclusion of numerical simulation is coherent with the result of the experiment .

根据分析，采用了料石底拱加半圆拱砌碹的方式控制持续变形，实测数据证明，控制方式是有效的。

The size of the value will be related to the support mode . According to the analysis , a reversed arch made of stone and cement can control the continued deformation . The measured data showed that the control method was effective .