Through the finite element numerical analysis on destroying characteristics and stability of tool pillar of the upper coal seam and the research on the stability of the roof of the lower coal face, this paper draws the stability characteristics of the roof structure of lower coal stoping face.
通过对上部煤层刀柱破坏特征和稳定性的有限元数值分析,以及对下部煤层工作面顶板稳定性的研究,得出了下部煤层回采工作面顶板结构的稳定性特征。
Two kinds of roof structures about sublevel caving are given.
在现场观测和动力学分析的基础上，研究了综放采场支架载荷有时比分层开采大而有时小的力学机理，提出了综放采场的两种典型顶板结构以及它们的静力和动力学特征，本文结论对综放支架的设计和选型有实际的指导意义。
Discussed the different roof structure characteristic and its deformation failure patterns.
讨论了不同顶板结构特征及其变形破坏形式，分析了采面矿压显现特征及其与顶板岩石组成的关系，为煤矿设计、合理选择支护形式提供必要的地质资
Analysis on Roof Structure s Stability of Longwall Mining in Shallow Seam;
浅埋煤层长壁开采顶板结构稳定性分析
Classification of Seam Roof Structure Type in Xutuan Mine Based on Fractal Theory
基于分形理论的许疃矿煤层顶板结构类型划分
Structure and Stablity Influencing Factors of Coal 3RD Roof in Longgu Mine of Juye Coalfield;
巨野煤田龙固井田3煤层顶板结构及其影响因素
Design of a thick plate transfer story structure in top plate of basement
某工程基础顶板厚板转换的结构设计
The builder wedges the wooden partition to the overhead construction.
建筑工人把木隔板?a在顶部的结构上。
The Study on the Destructive Mechanism and Law of Stratified Roof;
层状结构顶板破坏机理及其规律研究
Study on Strata Mechanical Structure and Support Adaptability of Shallow Seam;
浅埋深煤层顶板力学结构与支架适应性研究
Study on the Effect of Blasting Vibration on Roof Stability of Underground Construction;
爆破震动对地下结构顶板稳定性的影响研究
The Study of Application of Bulkhead Structure of Battle and Sheet Pipe Pile Foundation under High Reclamation;
高填土斜顶桩板桩承台驳岸结构应用技术研究
Research on the Change of Roof Pressure in Mining Coal Seam Athwart the Dipping Direction of Structural Plane by Centrifugal Model Test
逆结构面倾向开采顶板压力变化离心试验研究
Improvement on Riveting Van Body's Roof Sealing Structure
铆接厢式车顶板连接防水密封结构的改进方案
An arched structure, usually of stone, brick, or concrete, forming the supporting structure of a ceiling or roof.
拱顶一种拱形结构，通常由石头、砖头或混凝土构成，形成某一天花板或屋顶的支撑结构
Eight gridmolds of the conventional design are mounted, equally spaced along the table top's circular edge.
八个普通结构的板栅模具，沿工作台顶部周边间隔相等。
Study on the Rigidity of the Basement s Top Slab and Its Effect to the High-Rise Building s Performance;
地下室顶板刚性及其对高层建筑结构性能的影响研究
Anchoring Design for Thin-Layered Composite Roof Based on Beam-Arch Compound Structure
基于梁-拱式组合结构的薄层状复合顶板锚固设计
Discrete Element Simulation Analysis on Bolt Support for Broken Structure Roof of Mining Gateway
回采巷道碎裂结构顶板锚杆支护离散元模拟分析
"Dome:In architecture, a hemispherical structure evolved from the arch, forming a ceiling or roof."
圆屋顶:房屋建造中由拱发展而成的半球形结构,常用作天花板或屋顶。
Analysis of Web and Roof Crack of Continuous Rigid Frame Bridge;
连续刚构桥腹板及顶板裂缝成因分析