1) main roof
老顶岩梁
1.
Break of main roof ahead of workface and ground pressure;
采场老顶岩梁的超前破断与矿山压力
2) main roof stratum
老顶岩层
1.
The roof pressure pressed by the main roof stratum on the immediate roof is established by using the ratio of immediate roof thickness to mining height.
根据现场实测，采用统计回归与理论分析方法，对鸡西矿务局单体支柱工作面顶板压力计算方法进行了分析和研究，利用来高与直接顶厚度的比值确定老顶岩层作用在直接顶的压力，最后推导出较实用的顶板压力计算方法，并在鸡西进行了应用。
3) main roof block
老顶岩块
1.
Experiment study on the coefficients of friction and inserting of main roof block corner;
老顶岩块端角摩擦系数和挤压系数实验研究
4) main roof
老顶
1.
The paper regards the main roof strata in uphill and downhill mining of an inclined longwall as a elastic plate.
本文将倾斜长壁仰斜、俯斜开采的老顶岩层视为倾斜弹性板。
2.
The theoretical calculation of first weighting interval of main roof and the utilization of measured data of roof weighting interval in practice for improving the accuracy of its calculation are both important to ground pressure control.
老顶初次来压步距的理论计算以及利用实测来压步距资料来改善理论计算的来压步距精度是矿压管理中的重要工作。
3.
On this paper the method of plate limit analysis is applied to the determination of two breakage lengths of main roof.
本文应用板的极限分析法求老顶的断裂步距,从而解决了按板模型周现有的方法不能计算老顶周期断裂步距的问题这种方法的另一个显著的优点是它不但适用于矩形采空区而且也适用于非矩形采空区。
5) canopy
[英]['kænəpi] [美]['kænəpɪ]
顶梁
1.
Light type caving coal hydraulic support structural characteristic and discussion on canopy structural design;
轻型放顶煤液压支架结构特点和顶梁结构设计的探讨
2.
Detailed the problems and disadvantages of the common hydraulic support'side flap,and put for- ward to a feasible method,designed the mechanism of no side flap canopy.
阐述了几种常见液压支架侧护板存在的问题和不足,提出了一种切实可行的解决措施,即设计了一种无活动侧护板的顶梁。
补充资料：顶梁
1.头顶。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条