The paper introduced the blasting parameters and construction technology for small section tunnel in crumbly strata.

介绍了破碎岩层中小断面坑道的爆破参数和施工技术。

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The paper introduced the blasting parameters and construction technology for small section tunnel in crumbly strata.

介绍了破碎岩层中小断面坑道的爆破参数和施工技术。

youdao