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确定洞口位置考虑哪些因素?
更新时间: 2021-03-01 04:35:53  

1、洞口不宜设在垭口沟谷的中心或沟底低洼处,不要与水争路。

2、洞口应避开不良地质地段,以及避开地表水汇集处。

3、当隧道线路通过岩壁陡立,基岩裸露处时,最好不刷动或少刷动原生地表,以保持山体的天然平衡。

4、减少洞口路堑段长度,延长隧道提前进洞。

5、洞口线路宜与等高线正交。

关键词: 确定 洞口 位置 考虑 哪些 因素

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