The opening stability in soft weak coal layer is important to the safe production in a mine.
软弱煤层巷道的稳定性对煤矿正常安全生产起着重要作用。
The time to produce damage deformation in surrounding rock and possible loosening area are obtained by analyzing in situ measurement of displacement in soft weak coal layer.
本文通过对软弱煤层巷道进行位移实测及数据分析，得到了西部某矿软弱煤层巷道围岩变形达破坏所需的时间和可能的变形松动区域。
The surrounding rock of roadway is a compound structure consisted of roof, floor and sides. The sides of extraction opening are the weak coal mass, which affect the stability of floor directly.
巷道围岩是由顶板、底板、两帮组成的复合结构体，回采巷道两帮为软弱煤体，直接影响到底板的稳定性。
Coal shares in the secondary market to remain weak this is also expected to reflect ahead of time.
在二级市场上煤炭股继续疲弱，这是也将提前反映。
The stability of south slope in Yinmin Coal and Electricity Company is analyzed and the stability of the slope is controlled by four weak layers and the restraining mining methods is effective.
对伊敏煤电公司露天矿南帮边坡稳定情况进行了实例分析，变形区边坡稳定性主要受四个泥岩弱层控制，采取内排压脚等控制开采的方法是有效的。
Through analyzing the landslide pattern of the slope in West Open Pit Coal Mine of Pingzhuang, a conclusion can be drawn that the weak interfaces is the main controlling factor of landslide.
对平庄西露天煤矿边坡滑移模式进行了分析，得出软弱层面是控制滑坡的主因。
As a source material, coal is cheap and abundant and has unique weak bonds and mineral matter, therefore, may be utilized in the nanotubes preparation.
煤资源丰富、价格便宜、煤存有弱键和矿物质等特性决定了煤可以作为制备碳纳米管所用的碳源。
According to structure character of rock (coal) pillar of maintaining roadways, concepts of weak geometry structure roadways and weak structure body are brought forward in this paper.
根据护巷岩(煤)柱的结构特征，提出了几何弱结构巷道与弱结构体的概念。
The rotational jet and local oxygen enrichment can improve the mixing of oxygen and pulverized coal, but the effect of coal injection is weak on the whole flow field in blowpipe.
结果表明，氧-煤喷枪的漩流、富氧率等仅在氧枪出口的有限区域内对流场有较大的影响；
After the coal is ground into a powder, a weak mineral acid is added to extract stabilizing additives from the coal.
在将煤研磨成粉末后，加入弱无机酸，以从煤中萃取稳定性添加剂。
To identify the signal of the weak reflected wave is a key problem to detect the thickness of the coal seam by using elastic wave.
弱反射波信号识别是声波法煤层厚度探测中的一个关键问题。
The false top is the existence pole exchanges weak caving rock stratum between the coal seam and direct top. In the coal mining, it may often be happened.
伪顶是在煤层与直接顶之间存在的极易垮落的软弱岩层，在井下采煤工作面回采时，会常常遇到。
In the dimension design of coal pillars in strip mining, presently, most of them are carried out by analyzing strength stability, without considering the effect of weak plane in coal pillar.
在条带开采煤柱尺寸设计中，目前大多数是采用强度稳定性分析的方法，而没有考虑弱面对煤柱稳定性的影响。
In the dimension design of coal pillars in strip mining, presently, most of them are carried out by analyzing strength stability, without considering the effect of weak plane in coal pillar.
针对在条带开采煤柱尺寸设计中大多数是采用强度稳定性分析的方法，而没有考虑弱面对煤柱稳定性的影响，由于弱面的存在，煤柱常常会因抗剪强度不够而产生剪切破坏等问题。
In the dimension design of coal pillars in strip mining, presently, most of them are carried out by analyzing strength stability, without considering the effect of weak plane in coal pillar.
针对在条带开采煤柱尺寸设计中大多数是采用强度稳定性分析的方法，而没有考虑弱面对煤柱稳定性的影响，由于弱面的存在，煤柱常常会因抗剪强度不够而产生剪切破坏等问题。
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