main roof failure的意思|示意

The main factors effecting of slipping area along the bed rock and roof separation and failure area and the major avenue of damage surrounding rock caused by mining are analyzed in this paper.

分析了影响沿底座滑区和顶板离层破坏区破坏的主要因素及其采动损害传递的主途径。

Unsupported floor as the main releasing channel for deformation and failure energy, has intensified the whole subsidence of roof surrounding rock.

无支护底板作为变形破坏能量主要释放通道，加剧了巷道顶帮围岩整体下沉。

First, based on similar material model test, top coal cave-in characters in steep and thick seam were studied as well as failure law of main roof and features of surface subsiding.

首先利用相似模拟实验研究了急斜特厚煤层顶煤的冒落特征、顶板的破坏规律，以及地表下沉的特点。

The stability of main and immediate roof structure and its influence on strata behaviour are analysed. The failure features of roof coal between top and bottom slice are thoroughly studied.

深入分析了层间顶煤的破碎特点，指出层间顶煤的破碎效果是多因素综合作用的结果，而在不同的开采条件下将具有不同的放顶煤效果。