老顶

n.main roof; upper roof

网络释义：Old top

网络释义

n.1.main roof2.upper roof

1.main roof Overlying strata 上覆地层： Main roof 老顶，基本顶 Immediate roof 直接顶 ...

2.upper roof upper confining bed 上覆隔水层 upper roof 老顶 upright fold 垂直褶皱 ...

3.Old top　　老顶（Old top）——先前趋势中的各个顶部。　　最低点（Low）——与最高点对应的术语。

1.In the light of the voussoir beam theory, the broken upper strata would be able to form a stable structure to support the loads.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。

2.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。

3.According to stratum quality index, this paper established classification norms of immediate roof and main roof.本文依据岩层质量指数，建立了直接顶和老顶的分类准则；

4.New method to determine the main roof pressure in tridimensional simulated test立体相似模拟实验判断老顶来压的新方法

5.Analysis of the way for the main roof caving relating to the staggered sublevel caving method错层位放顶煤方法老顶垮落方式分析

6.The criterion on determining main roof in breaking zone and its application to the shallow seam断裂带老顶的判别准则及在浅埋煤层中的应用

7.Roof boarding, scattered high - rise near Point road orderly, panoramic view of the urban landscape;登临老顶，近望高楼错落，道路井然，市区景致尽收眼底；

8.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

9.Research on curves of determining the instability type of broken rock blocks of main roof采场老顶断裂岩块失稳类型判断曲线讨论

10.Mechanical model analysis of failure in steep seam mining急斜煤层开采老顶破断力学模型分析