摘要
文章针对传统交岔点工程量大、巷道顶部围岩破坏较大、无效断面大等缺陷,将交岔点段断面由直墙半圆拱改为三心拱,大大降低了工程量和施工难度,经济效益显著。
For a traditional crossing point projects a large amount of roadway at the top of rock destruction of large, large defects such as an invalid section, the intersection of the cross -section from the vertical wall segment into three semi -circular arches heart arch, greatly reduce the amount of engineering and construction difficulty, significant economic benefits.
出处
《山东煤炭科技》
2010年第3期102-102,104,共2页
Shandong Coal Science and Technology
关键词
锚喷巷道
交岔点
直墙半圆拱
三心拱
anchor spray roadway crossing point straight wall semi - circular arches three heart arch
