显然，这是地下采掘引起的表生时效变形。
Evidently, the deformation is a kind of time-dependent deformation caused by underground mining.
本文着重研究地下采掘机械优化配置的方法问题，并以一实例给出了分析的方法和步骤。
This paper mainly studies the method of optimal fitting of underground mining machinery, and analyses an actual example by integral programming.
构造介质、构造界面、构造应力相互影响，相互制约，协同作用，构成了地下采掘工程的构造环境。
The tectonic setting of underground mining engineering is constituted by structural medium, fractures and tectonic stress in influence, restriction and cooperation one another.
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