The results show that the designed parameters are reasonable and there is a little damage for roof rock mass.
研究表明设计的爆破参数能合理爆落设计范围内的岩体，且对顶板围岩不致造成过大的损害。
The assessment is helpful for improving monitoring and control of roof rock stability during coal exploitation.
该评价结果有助于在煤矿开采过程中加强不同区域煤层顶板的管理及科学地指导工作。
It is also pointed out that rheology of roof rock will reduce the carrying capacity of roof structure and will ind...
同时指出，顶板岩层流变会降低顶板结构承载能力，促使变形失稳发生。
It is also pointed out that rheology of roof rock will reduce the carrying capacity of roof structure and will induce deformat...
同时指出，顶板岩层流变会降低顶板结构承载能力，促使变形失稳发生。
The two topic technologies can be realized by detecting structure instrument of the roof rock and micro-deformed monitoring instrument.
论述了两项关键技术分别由顶板岩层结构探测仪和顶板微变形监测仪两个仪器来实现。
It is also pointed out that rheology of roof rock will reduce the carrying capacity of roof structure and will induce deformation instability.
同时指出，顶板岩层流变会降低顶板结构承载能力，促使变形失稳发生。
Forward support bolt combined with roop rock by bolting can play a roll of combined beam, which can prevent roof rock caving immediately after explosion.
超前支护锚杆锚固后与顶板岩石构成一体，这样使超前锚杆形成组合梁作用，放炮后，能够阻止顶板岩石冒落。
And calculations of the stress of the roof rock are made with numerical value analytic method. The conclusions tally with what are determinde in practice.
说明在月亮田煤矿的具体条件下，所用的分析方法是合理的，对其他采场的顶板来压的预测也具有参考价值。
Thes detecting structure instrument of the roof rock is integrated in the pneumatic bolt drill and data processing is adopted BP algorithm of mature net to identify the structure.
其中，顶板岩层结构探测仪是集成在风动锚杆钻机上，数据处理采用训练成熟的BP算法神经网络进行结构的识别；
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。
Applying long horizontal roof rock hole to drain the gas from adjacent seam and goaf is a new technique. In this paper, introduces the latest progress of this technique is introduced fully.
采用顶板岩层水平长钻孔抽放邻近层和采空区瓦斯是一项新技术，全面介绍了该技术研究的最新进展。
Also, the crack extension time decreases with the increase of material creep index and the loading of overlying strata rock while it increases with the increase of tensile strength of roof rock.
断裂孕育时间随材料的蠕变指数、上覆岩层压力的增大而减小；裂隙扩展时间也随材料的蠕变指数、上覆岩层压力的增大而减小，但随岩石的抗拉强度增大而增加。
He recruited local masons to quarry granite blocks out of the rock faces, and he and his disciples hauled bags of cement and roof tiles up to the site.
他雇佣本地的泥瓦匠从岩壁上凿出花岗岩块，自己和徒弟们则负责将大包的水泥和瓦片抬到峰顶的建筑工地上。
The garage roof, a limb on a tall tree, a steep rock quarry, whatever it is, it looks tempting to climb.
车库顶，高树上树枝，陡峭的露天采石场，不管是什么，好像都让你非常想去攀爬。
Compression-resistant rock wool board: used for roof heat preservation of airport lounge and large workshop as it could bear huge loads.
耐压岩棉板：能承受巨大的高负载。适用于候机室、大型车间等房顶保温。
Elastic mid-strength rock wool board: used for heat preservation, fireproofing and sound absorption for the building wall/roof, such as curtain wall, inner wall partition and elevator hoistway, etc.
有弹性，中等强度岩棉板：适用于建筑墙体/屋顶保温、防火、吸音，如幕墙、内墙隔断、电梯井等。
Roof falling, floor heave of roadway and pillar failure are important problems of rock mechanics in mining process.
顶板冒落、巷道底鼓和矿柱破坏是采矿过程中的重要岩石力学问题。
Bond clings to the roof of a flaming Land Rover careening down the narrow passes of the Rock of Gibraltar in The Living Daylights.
邦德紧贴在一辆着火的英国越野车顶上倾斜向下在狭窄的岩石通道在直布罗陀海峡在“黎明生机”。
Roof falling of mined out area was numerically studied by using a rock failure process analysis software(RFPA2D).
前言：运用岩石破裂过程分析RFPA2D 系统，对采空区顶板大面积冒落过程进行了数值模拟研究。
It is necessary to research into the burst failure and rock burst tendency of combined sample which is made up of roof, coal and floor.
研究顶板-煤体-底板所构成的组合煤岩体试样变形破裂规律及冲击倾向性对于预测冲击矿压具有非常重要的实践意义。
The coal seam roof of Huojitu mine is the burnt rock, which is the water impregnated aquifer, is dangerous to mine safety.
烧变岩是活鸡兔矿井的顶板充水含水层，直接威胁着矿井的生产安全。
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。
The vital problems to be solved in Shendong mine are the dynamic pressure damage of thin rock strata roof under thick sandy soil soft stratum and the loss of water and soil under mining.
浅埋煤层薄基岩厚砂土松散层顶板动压灾害和采动水土流失是神东矿区急需解决的重大问题之一。
The results of numerical analysis on mined-out area indicate that the roof at mined-out areas is unstable and the rock in the roof is easy to collapse in this mine.
数值分析结果表明：夹沟矿采空区的顶板是不稳定的，顶板岩体容易发生垮落事故。
It has important theory meaning of this research to analyze the mechanism of sliding instability, study the relation of "support -rock" and establish dynamic roof structure theory.
本文的所得结论对分析浅埋煤层的强烈滑落失稳机理、进一步研究采场“支架—围岩”关系、建立浅埋煤层动态顶板结构理论具有重要的理论意义。
With theory of rock beams, cutting roof, reinforcing roof, manual pillar deformation and failure, and obtains some kinds of knowledge.
文章就顶板稳定性有关的普通顶板、节理化顶板、放顶、顶板加固和人工柱变形破坏等问题，用岩石梁理论进行了分析讨论。
Aiming at the influence effects of roof stratum on rock burst, the research methods of physical simulation experiment in laboratory, UDEC 4.
针对顶板岩层对煤体冲击的影响作用机理，采用实验室物理模拟试验、UDEC4。
For this purpose the mechanism of forming a rock tunnel roof arch and reinforcement will be illustrated with the underground powerhouse in the Three Gorges Project.
为此，以三峡工程地下厂房拱顶设计为例，研究洞顶岩石拱结构形成及加固机理。
Roof is composed of heterogeneous rock. When roof failure happens, a large amount of energy would release in the form of seismic wave.
顶板是一种典型非均质岩石材料，在其破坏演化过程中将释放能量产生地震波。
The effect of basic rock thickness, mining height and advancing speed on roof breaking is analyzed.
并进一步分析了基岩厚度、采高、推进速度对顶板破断的影响。
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