| 释义 |
main roof短语⁹⁰⁸⁸⁷⁺⁷
基本例句
冷藏车的外车顶; 带阁楼式车顶客车上的侧车顶
The intervals of main roof weighting at work faces were predicted by using artificial neural network.
利用人工神经元网络对工作面的顶板来压步距进行了预测。 dictall
The first weighting of the main roof is the very fierce ground behaviour. In many cases, the first weighting is the very fierce and very difficult control pressure of the working face.
老顶初次来压是一种十分剧烈的矿山压力显现现象，多数情况下，工作面来压最猛烈、最难控制的是老顶的初次来压。 chemyq
The movement and breakage of top coal, especially its internal micro- fracture extension, are closely related to the movement regularity of its immediate roof and main roof.
顶煤的运移与垮落，尤其是内部微观裂隙的扩展，与其直接顶和老顶岩层的活动规律密切相关。 cnki
The main roof has three basic structure forms: dynamic arch, arch-beam and beam.
老顶存在三种基本结构：类拱式、拱梁式和梁式。 cnki
According to the structure of overlying strata, the mechanical structure model of main roof in gateways was established.
根据上覆岩层结构，建立了回采巷老顶岩梁的力学结构模型； cnki
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； chemyq
Based on the local, migratory and subsection characteristics of main roof fall of longwall face, the main roof was divided into some plate group, and plate group mechanical model was established.
针对长壁工作面顶板垮落具有局部、分段、迁移的时空特征， 将长壁工作面采场顶板划分成若干个相互铰接的薄板，建立了薄板组力学模型。 cnki
Based on limit analysis of the plate construction of the main roof this paper derived a general formula for calculating the first weighting interval.
通过老顶岩层板结构的极限分折，本文导出了初次来压步距的统一计算式。 zidian8
Based on simulating model test and theoretical analysis, the mechanism of main roof first breaking is revealed, and the asymmetry breaking parameter is determined.
运用相似模拟和理论分析相结合的方法，揭示了采场顶板初次破断机理，确定了有关参数。 chemyq
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。 cnki
Increased hanging area and weighting of main roof caused abutment stress concentration and stress transfer.
由于悬露面积增大或老顶来压引起支承压力集中和转移。 cnki
The paper describes the time effect characteristics of main roof deformation and its viscoelastic solution.
本文详细论述了采场老顶变形的时效特性及其粘弹性解。 cnki
The second aspect is the prediction of the likely future weighting of main roof through hybrid algorithms of the neighbourhood interaction operation and the neural networks.
同时，通过邻城相互作用算法与 BP网络耦合，预报了采煤工作面顶板来压。 cnki
This paper establishes the mechanical model of the stability of the whole deformation of roof structure and the stability of partial contact of the main roof.
本文建立了综放采场顶板结构整体变形失稳和局部铰接失稳的力学模型； cgejournal
Weak planes have an obvious and regular effect on the squeezing strength of main roof block corner, and the coefficient of roof block corner is determined as0.4.
端角挤压强度受弱面的影响明显且具有规律性，端角挤压系数确定为0.4。 cnki
With the help of classical sheet theory in elasticity mechanics, deformation and failure law of main roof is analyzed when the gob area is packed and not packed.
应用弹性狭长薄板理论，分析了采空区在充填和未充填两种条件下，顶板的变形破坏规律，影响因素。 cnki |