The application of this technique shows that it is well worth developing because of its safe construction, low cost and good supporting effects.

应用表明，采场顶板长锚索预锚固技术施工安全，成本低，支护效果好，值得推广应用。

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The application of this technique shows that it is well worth developing because of its safe construction, low cost and good supporting effects.

应用表明，采场顶板长锚索预锚固技术施工安全，成本低，支护效果好，值得推广应用。

youdao