In all the factors that affect the roof stability, blasting vibration is a very important one.
在影响地下结构顶板稳定性的诸多因素中，爆破震动的影响也是一个相当重要的因素。
Based on rock mechanics theory and 3d numerical modeling, a synthetical safety evaluation for the roof stability has been put forward and verified by the case study.
根据岩石力学理论和三维数值模拟计算，结合我国一些金属矿工程实例研究，提出了地下采空区顶板稳定性的综合安全评判方法。
By taking the on-site monitoring and research as a tool, the influence of coal mining, coal pillar size and underwater on the roof stability of coal roadways is analyzed.
阐述了哈拉沟煤矿主采煤层顶板的赋存特征，以现场监测、现场调研为手段，分析了煤层开采、护巷煤柱尺寸及地下水对煤巷顶板稳定性的影响，为今后煤巷顶板稳定性分类及合理支护提供依据。
Discrete element method is used to analyze the roof stability in accordance with the variation of its loading, rock frictional Angle, bolt spacing, rock properties and bolt orientation.
采用离散单元法，分析了当荷载、岩体的摩擦角、锚杆间距、锚杆方向和岩体的性质变化时，顶板的稳定性。
Under the new buildings through the gob roof stability calculation and evaluation of new buildings under the gob roof stable critical thickness could be determined whether to deal with.
通过对新建建筑物下采空区顶板稳定性计算，评价新建建筑物下采空区顶板稳定的临界厚度，从而确定是否需要处理。
By using field observation and numerical simulation method, the influence of fracture structure plane on the underground pressure and the roof stability of working face are systematically studied.
通过对现场观测和数值模拟分析，系统研究了断裂结构面对回采工作面矿压分布和顶板稳定性的影响。
Arched-corrugated metal roof( ACMR) belongs to cold-bending thin wall steel structure, of which the stability is a key factor influencing its bearing capacity.
金属拱型波纹屋顶结构属于冷弯薄壁构件，稳定问题是影响其承载能力的关键因素。
In this paper, the elastic stability of reinforced concrete silo shell roof is analyzed using finite-element model. The elastic critical buckling loads of the shell roof are calculated.
本文用有限元模型分析了钢筋混凝土浅圆仓仓顶的弹性稳定性，计算了其屈曲临界荷载。
When the thickness of Karst roof is not enough, the stability of rock_socketed pile foundation should be analyzed and discussed.
当桩基作用在岩溶顶板上且岩溶顶板厚度不是足够厚时，需对嵌岩桩桩基的稳定性进行分析与讨论。
Defend is difficult since its stability is bad, often bring face roof fall, the roof management is very difficult.
由于其稳定性差、维护困难，经常造成工作面顶板冒落，给顶板管理带来了很大困难。
Provided that, roof structure 's stability analysis of ShenDong Mining Field is built on the static relation, there will be much different from the engineer practice.
若将神东矿区顶板结构的稳定性分析建立在“静态”关系基础上，这与其工程实践有较大出入。
Arched corrugate metal roof is a new member of spatial thin-walled steel structures, its bearing capacity is mainly determined by its whole stability.
金属拱形波纹屋面是一种新型空间薄壁钢结构，其极限承载力主要由其整体稳定性所控制。
Based on the research result of control action of structure to the stability of roof, the author puts out tectonic synthesis method for predicting the stability of roof.
根据地质构造因素控制煤层顶板稳定性作用的研究，提出煤层顶板稳定性预测评价的矿井地质构造特征解析方法。
Through analysis of lithologic character and composite structure of roof rock of No. 6 coal layer in Liuqiao Coal Mine, the stability of roof rock in different zones are assessed.
通过对刘桥矿区6煤层顶板岩层的岩性和岩性组合结构的分析，确定了不同区域的稳定性情况。
In a later development, the floating roof was built with a series of "pontoons, " or closed compartments, around its outer edge to increase floating stability and to simplify the structure.
近期建造的浮顶在其外围有一系列浮舱或封闭的隔舱，以增加浮动的稳定性并简化其结构。
For the overall stability of the roof, the glass fins have been connected to the steel structure. They are working together as one structure.
为了保持屋顶的整体稳定性，玻璃弧连接到钢结构，融合为一体结构。
A mechanical model for the fractured roof and truss system is established based on stability theory for elastic system and analysis of stability of a dynamic system.
应用弹性系统稳定性理论对断裂顶板-锚拉支架系统建立了动力系统稳定性分析的力学模型。
It is indicated that apart from stiffness factor of beam to column, the ratio of depth to span and slop of roof greatly affect the stability performance of the portal frame under roof uniform loading.
研究表明，在均布荷载作用下，除了梁柱线刚度比，刚架高跨比及屋顶坡度对刚架的稳定性能影响很大。
In the light of analogue test in laboratory, the stability of roof of fully mechanized working face with top coal caving is studied during withdrawing support at stop line.
通过实验室相似模拟试验，对综放面收尾撤架空间的顶板稳定性进行了研究。
The stability of the ore pillar and the roof is a key issue in the pillar recovery in unfilled mined-out area.
在空区未充填的情况下回采矿柱，矿柱与采空区顶板的稳定性是一个关键问题。
The stability of seam roof is one of the most important factors that influences the safety of coal extraction.
煤层顶板的稳定性是影响煤层回采工作安全最重要因素之一。
The stability of seam roof is one of the most important case that influences the safety of coal extraction.
煤层顶板的稳定性是影响煤层回采工作安全最重要因素之一。
Based upon dozens of analysis cases on gabled frames with different beam span, column height and roof grade, the behavior or influence of tension rod to frame stress and frame stability is determined.
本文依据刚架不同的横梁跨度、立柱高度、横梁坡度、设计了一系列的算例，在大量的算例分析结果的基础上，得到了横梁拉杆设置与设置位置对刚架梁柱构件内力、应力、稳定性影响的变化规律。
Now a conclusion comes: the stability of stope not only has a relationship with the size of the exposed roof, but the exposed surface shape has a crucial influence on its stability.
得到结论：采场稳定性不仅与顶板暴露面大小有关，暴露面形状对其影响也是至关重要的。
Defend is difficult since its stability is bad. It often brings face to roof fall. The roof management is very difficult.
由于其稳定性差、维护困难，经常造成工作面顶板冒落，给顶板管理带来了很大困难。
In view of a collapse accident of the roof-fram, the strength and the stability of a collapsed roof-fram is analysed in detail.
本文针对一起屋架坍塌事故，详尽分析了坍塌屋架的强度及稳定性。
The site mine pressure observation showed that during the face roof normal period or the roof periodical pressurized period, the face equipment all presented a good stability.
现场矿山压力观测表明，无论是工作面顶板正常工作期间还是周期来压期间，工作面设备均表现出了良好的稳定性。
The stability of the ore pillar and the roof is a key issue in the pillar recovery in unfilled mined - out area.
在空区末充填的情况下回采矿柱，矿柱与采空区顶板的稳定性是一个关键问题。
The stability of the ore pillar and the roof is a key issue in the pillar recovery in unfilled mined - out area.
在空区末充填的情况下回采矿柱，矿柱与采空区顶板的稳定性是一个关键问题。
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