Testing and judgment of surrounding rock loose zone of tunnel engineering is very important for construction supporting design in the tunnel construction period.
隧道工程施工期围岩松动圈的测试与判定，对于施工支护设计具有重要作用。
Testing and judgment of surrounding rock loose zone of tunnel engineering is very important for construction supporting design in the tunnel construction period.
隧道工程施工期围岩松动圈的测试与判定，对于施工支护设计具有重要作用。
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