主要运输平巷 main haulage road
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简述了板石矿业公司上青矿640主运输平巷在硐口段施工过程中,克服地质条件复杂、多变的现状,采用撞楔超前支架法施工,硐口掘凿获得成功。
The geological condition is complicated and varies often. Using the method of pre-support through hammering wedge, the cave mouth digging work of No. 640 main transportation channel was successful.
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