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在用于仅以探矿为目的,不为采矿利用,不长的探矿平巷及斜坑施工中,我们一般地采用了合理的较小巷道断面,同样满足了地质要求,获得了强进速度快,工程成本低,而又安全的良好效果。工效一般提高一倍左右。通过244队以及其他各队使用小断面巷道的经验,概括有下面几点好处:1.岩石压力较小,保证安全:在距地表较浅岩层中掘进巷道,地压对巷道的压力一般较大,特别当巷道断面较大时,虽然加强支护,
In the prosperous and prosperous pit and pit construction for the purpose of prospecting only, not for mining and utilization, we generally use a reasonable smaller roadway section, also meet the geological requirements, access to strong into the fast, Low cost of construction, but safe and good effect. Ergonomics generally doubled. Through the experience of team 244 and other teams using small section tunnels, the following benefits are summarized: 1. Rock pressure is small, and safety is guaranteed: tunneling pressure is generally larger in underground tunnels with shallower excavation , Especially when the roadway section larger, although to strengthen the support,