【摘 要】
：
一概述在地质較差的双綫隧道洞門地段的施工中,如何将拱部衬砌插进山体,使內外衬砌卸接起来。如施工方法不当,常引起洞口地段坍方,影响工期。洞口地段坍方,一般有两种情况:
【机 构】
：
中国人民解放軍6835部队司令部,
论文部分内容阅读
一概述在地质較差的双綫隧道洞門地段的施工中,如何将拱部衬砌插进山体,使內外衬砌卸接起来。如施工方法不当,常引起洞口地段坍方,影响工期。洞口地段坍方,一般有两种情况:一是洞門仰坡坍方,一是洞內坍方。前者是由于过大的破坏了山体和原坡面,或坡度过陡,开挖后暴露时間过长,甚至經过雨季,
An overview of the construction of the two-lane tunnel tunnel in poor geological conditions, how to insert the arch lining into the mountain, so that the lining lining unloading. Such as improper construction methods, often caused by cave lot, affecting the construction period. Lot collapse cave area, there are two general conditions: First, the slope of the cave door slopes, one cave collapse. The former is due to excessive destruction of the mountain and the original slope, or steep slope, the exposure time after excavation is too long, even after the rainy season,
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