rock drivage

岩巷掘进
常用释义
岩巷掘进

例句

1·At present, in the building of new shaft, rock drivage takes 40%-50% of whole project, and the construction takes 35%-50%.

目前,在新井建设中,岩巷掘进工程量一般约占总工程量的40% ~ 50%,施工工期占35% ~ 50%。

2·The test results show that the better blasting effect and obvious technical and economic benefits in coal rock drivage can be acquired by means of the quasi-parallel cutting method.

实践表明,在煤矿岩巷掘进中使用准直眼掏槽方式,能够取得良好的爆破效果和显著的技术经济效益。

3·Finally, the examples of projects pointed out lessons learnt from roadway drivage in soft rock.

最后,通过工程实例说明在软岩巷道施工中所吸取的教训。

4·Developing rock roadway of coal mine is a hard task at present. Mechanized drivage of rock roadway has become a common technical problem of every coal mine.

目前煤矿岩巷开拓任务重,岩巷机械化掘进成为各矿普遍存在的技术难题。