semisplint coal

用法例句

The new technology of waste-filling replacement mining on strip coal pillar;

利用矸石充填置换开采条带煤柱的新技术

Whether the strip coal pillar is stable or not is one of the key problems of strip-partial mining.

应用突变理论建立了条带煤柱突变破坏失稳的尖点突变模型,导出了条带煤柱破坏失稳的充要条件表达式。

Its success or failure hinges on the long-term stability of strip coal pillar.

条带开采是目前解决“三下”压煤的较为切合中国煤矿企业实际的方法之一 ,条带开采成败的关键是条带煤柱的长期稳定性。

According to the Rayleigh-Sommerfeld diffraction scalar integral formula,the equation of spatial frequency at half maximum intensity of central bright fringe of far field diffraction of planar waveguide in TE_0 mode was educed.

由瑞利 索末菲标量衍射积分公式出发,推导出中央亮条纹强度半最大值处的空间频率满足的方程;阐明了平面波导TE0模远射远场的中央亮条纹强度半最大值空间频率宽度随波导归一化频率增大而增大;给出中央亮条纹强度半最大值全角宽度与工作波长、波导宽度和波导相对折射率关系曲线。

The concept of central bright fringe of dielectric planar wavegu.

首次提出介质平面波导衍射场存在中央亮条纹的概念 ,中央亮条纹的功率大于波导总功率的 99。

Study on Stress State of Wide Strip Pillar in Gobs of Deep Mines

深井采空区宽条带煤柱受力状态研究

Research on Reasonable Size of Steeply Dipping Seam Strip Coal Pillar under Village;

村庄下大倾角煤层条带煤柱合理尺寸研究

Study on the Key Technique of Strip Coal Pillar Recovered by Driving Roadway and Filling;

掘巷充填回收部分条带煤柱的关键技术研究

Study on the Phenomenon of Dynamic Pressure of Strip Coal Pillar Recovery and Application

条带煤柱回收动压现象力学分析及应用

Test Study of Coal' Strength & Deformation Characterstic and Application in Strip Pillar Design;

煤岩强度与变形特征实验研究及其在条带煤柱设计中的应用

Behavior Law of Mine Pressure in Roadways Under Conditions of Mining With Coal Pillars

带煤柱开采条件下巷道矿压显现规律

Evaluation method for pillar stability during strip mining in multiple coal seams

多煤层条带开采煤柱稳定性评价方法研究

Study on the Coal Pillar Stability of Deep and High Seam Strip-Partial Mining and Its Impact on the Village in Gucheng Coal Mine;

古城煤矿深部厚煤层条带开采煤柱稳定性及对村庄的影响研究

Study on Pillars Stability by Keeping Water in Strip Mining for Small and Medium-sized Mines in Northern Shanxi Province

陕北中小矿井条带保水开采煤柱稳定性研究

Numerical Simulation and Calculation on Plastic Zone Width of Coal Pillar for Strip Mining

条带开采煤柱塑性区宽度的数值模拟与计算

Numerical Study on Substitution Extraction in Coal Pillar of Strip Mining

条带开采留设煤柱置换开采方法的数值模拟研究

Experimental Simulation and Numerical Analysis of Partial Extraction Pillar Stability--A Case Study of Taiping Coalmine, Jining City, Shandong Province

条带开采煤柱稳定性的试验模拟与数值分析——以山东省济宁市太平煤矿为例

Analysis of Coal Mine Water-filled Conditions Under Thick Cenozoic and Coal Pillar Preserve

巨厚第四系下煤矿充水条件与煤柱留设的分析

Exploration on Coal Pillar Recovery on Fully Mechanized Disk Area under Complex Conditions

复杂条件下综采回收盘区煤柱的探索

Discussion on Tertiary Hydro-geological Feature and Pillar Setting in Efflorescent Oxygenized Belt

第三系水文地质特征与风氧化带煤柱留设

Reasonable Width of Waterproof Coal Pillar Under the Condition of Different Fault Dip Angles

不同断层倾角条件下防水煤柱合理宽度的研究

Practice Entry Protection Technology on Full Mechanized Working Face Heteromorphism Coal-pillar Condition

综放工作面异形煤柱条件下的护巷技术

Research on the Tunnel Supporting and Propriate Coal Wedre Preserving under the Provide of the Upper Plate of Qiling Coal Mine;

七岭煤矿坚硬顶板条件下巷道支护及合理煤柱留设研究