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- comparison of coal and rocks 煤岩层对比
- We analyze the relationships between electromagnetic radiation signals and excavation, dynamic disaster fatalness of coal and rocks. 有煤与瓦斯突出和冲击地压危险时,有明显的电磁异常前兆;
- We analyze the relationships between electromagnetic radiation signals and excavtion,dynamic disaster fatalness of coal and rocks. 研究表明，煤矿采掘过程伴随产生电磁辐射，电磁辐射是煤岩体受到采动影响后应力重新分布或变形破裂趋向新平衡的结果；
- According to the index of bump proneness of coal and rock,weak bump proneness existed in . 煤岩冲击倾向性是煤岩的固有属性,是决定其产生冲击破坏的能力和发生冲击地压的必要条件。
- EME of coal and rock is a kind of phenomenon during the deformation and fractur... 顶板稳定性异常区域电磁辐射脉冲数明显增多,可以应用电磁辐射技术非接触监测评价矿山顶板的稳定性。
- The damage speed of coal and rock is EME impulse, the release energy in an instant (EME amplitude value) and the deformation speed. 煤岩体的损伤速度与电磁辐射脉冲数成正比，与瞬间释放的能量（幅值）、变形速度成正比；
- A dispatching decision method that integrates the allocating goods-current of coal and rock with computer simulation is supplied. 提出了用“煤岩货流量分配”与计算机模拟相结合的一种调度决策方法。
- Automatic lifting of shearer drum is one of key techniques of coal face automation, and its core is identification technique of coal and rock interface. 滚筒自动调高是实现采煤工作面自动化的关键技术之一,其核心是煤岩分界识别技术。
- An important characteristic of instability failure of coal and rock which is subjected to external loadings is that its deformation possesses property of strain softening. 煤岩体在外载荷作用下发生失稳破坏时的一个重要性质就是其变形具有应变软化的特征。
- In accordance with the experiment and application results, the paper has also made a discussion on the EME principle of deformation and fracture of coal and rock. 本文阐述了电磁辐射法预测突出的理论和实验基础,电磁辐射法预测突出能实现连续、非接触、准确可靠和自动化监测,是煤与瓦斯突出预测技术的发展方向。
- By similarity simulation experiment, we analysis the mining-induced fracture distribution and permeability of coal and rock mass near protective layer mined by speckle method. 阐述了含瓦斯煤的力学特性：通过相似模拟实验，用散斑法对保护层开采过程中来动裂隙分布规律及煤岩体的渗透性进行了分析。
- Because of tectonic movement, there is large igneous intrusion in the working area and changed physical properties of coal and rock in different extent. 因地质构造运动,采区内有大面积岩浆岩侵入,不同程度地改变了煤岩物理性质。
- Coal and rock oil, or petroleum, are of great value as fuels. 煤和石油或汽油，作为燃料，价值极大。
- composite model of coal and rock 煤岩组合模型
- sensor of coal and rock interface 煤岩界面传感器
- burst and deform of coal and rock 煤岩破裂变形
- This emerged by a comparison of plant capacity and output figures. 这一点只要将其工厂生产能力和产量数字比较一下就可以看出。
- Study on Ragularity of Well Logging Curve of Coal and Rock Seam 煤岩层的测井曲线解释规律
- A mass of snow and rock break away and fall on the climber. 一堆积雪和岩石突然崩落到登山者的身上。
- Comparison of M-estimator and LTS Estimator in Regression. LTS回归与M估计稳健性的比较。
