2) immediate roof
直接顶
1.
It was point out that main roof can form the voussoir beam structures in the inclination, and immediate roof located at the middle\|lower section of a longwall face probably forms a voussoir arch structure with a small scale because of waste filling.
提出了大倾角条件下老顶岩层在运动中易于形成倾斜砌体结构板大结构 ,直接顶岩层则因上段冒落矸石充填 ,在采场中下段形成砌体梁小结构 ,并探讨了中下段小结构平衡的极限条件和结构失稳形式 。
2.
The main roof applies a given deformation on the immediate roof.
根据砌体梁理论，上覆岩层破断以后仍可以形成能够承受载荷的稳定岩体结构，因此老顶通常以给定变形的方式作用于直接顶。
3.
Deformation and failure features at different heights of immediate roof in working face are analyzed by using numerical calculation method.
运用数值计算方法分析了采场不同高度直接顶的变形破坏特征，提出直接顶的“临界高度”（ｈｃｒ）概念，将直接顶按临界高度进行分类，指出当直接顶高度Σｈ ≥ｈｃｒ 时，不能单纯以顶板下沉量来判别顶板是否稳定，而要综合考虑端面顶板的稳定性。
3) direct roof
直接顶
1.
Similar simulation research on arch mechanism of direct roof falling under fully mechanized top coal caving face;
综放采场直接顶垮落成拱机理相似模拟研究
2.
On the basis of analysis of the reciprocity mechanism of original pressure and direct roof, the author analyzes the setting methods of appropriate original pressure of powered support is put forward finally.
在详细分析液压支架初撑力与直接顶相互作用机理的基础上,对支架合理初撑力的确定进行了分析研究,并提出了合理支架初撑力的确定方法。
4) thickness of immediate roof
直接顶厚度
1.
Numerical simulation on stability of gateway under the influence of the thickness of immediate roof;
直接顶厚度对回采巷道稳定性影响的数值模拟研究
5) category of direct roof
直接顶分类
6) upper immediate roof
上位直接顶
1.
Generating and destabilization evolutionary of granular arch structure of upper immediate roof;
上位直接顶“散体拱”结构的形成及失稳演化
补充资料：金刚顶经一字顶轮王瑜伽一切时处念诵成佛仪轨
【金刚顶经一字顶轮王瑜伽一切时处念诵成佛仪轨】
（经名）一卷，唐不空译。说一字顶轮王之修法者。
（经名）一卷，唐不空译。说一字顶轮王之修法者。
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