Coal mine soft-rock tunnel is a important constituent of soft rock engineering.
煤矿软岩巷道工程是软岩工程的一个重要组成部分。
Underground tunnel support of soft expansion rock is a main difficulty in mine construction currently.
松软臌胀岩层的井下巷道支护是目前矿山建设中的一个主要难点。
There is some instructional signification to soft rock tunnel project and practice of coal mine.
对煤矿软岩巷道工程实践有着一定的指导意义。
It will play important role in soft rock tunnel supporting.
它必将在软岩巷道的支护中起着主要的参考作用。
It will play important role in soft rock tunnel supporting.
它必将在软岩巷道的支护中起着主要的参考作用。
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