drift of strata的意思|示意

Bad strata are often encountered in the process of drifting in mines, if improperly treated, they will lead to serious deformation of drift, even collapse, so as to increase the amount of repair work.

在矿山巷道掘进施工中，经常会遇到不良岩层，若处理不当，会导致巷道严重变形，甚至坍塌，使返修工作量增大。

This paper took level 1280 strike drift of Dragon Head Mine as example to make an approach to the construction technology for drifting in bad strata.

本文以龙首矿1280沿脉巷道为例，对不良岩层中掘进的施工技术进行了探讨。