coal seam

The spontaneous combustion of coal seam endangers the safe production.

井下煤层自燃严重危害着安全生产.

Research and Application of Upward Top Coal Caving Mining Technology in Thick Seam

厚煤层上行开采放顶煤技术研究与应用

Study of Coal Seam Gas Reservoir Simulation Numerical Model and Application

煤层气储层数值模拟模型及应用的研究

Exploration evaluation coal seam gas is a base of coal seam gas exploration and developing.

煤层气的勘探评价,是开展煤层气勘探与开发工作的基础.

The site test of long hole blasting in coal seam is carried out. The test results indicate that long hole blasting in the crossing hole can improve the suction quantity of firedamp effectively.

进行了深孔爆破的现场试验，试验结果表明穿层深孔爆破可以有效地增加瓦斯抽放量。

The water injection in coal seam to prevent rockburst has lower costing, simper operation and better availability, which is always the first selected measure. However, there is not a relative research result and it stops at test level.

煤层注水预防冲击地压成本低、操作简单、适应性强，一直是预防冲击地压的首选措施，但过去缺乏相应的研究，以至迄今仍停留在试验水平上。

Factors affected coal seam permeability change and its law is analyzed.

分析了煤层透气性变化的影响因素及变化规律.

The Fuzzy Control of the Effect of Coal Seam Injection

煤层注水效果的模糊控制方法研究

Experimental Study of Water Infusion Technology for Special Coal Seam

特殊煤层的注水工艺技术试验研究

Application of Grey Theory in Predicting Gas Content in Coal Seam

灰色理论在煤层瓦斯含量预测中的应用

Study on the Quick Cutting Method of High Gas Outburst Coal Seam

高瓦斯突出煤层快速揭煤方法研究

The Gaussian curvature of No.3 coal seam in Qinshui basin is calculated.

计算了沁水盆地3号煤层的高斯曲率.

Development of Coal Seam Injection Water Flow Monitoring and Control Device

煤层注水流量监测监控装置的研制

Essential way of solving the gas drainage problem of low permeability coal seam is seam permeability.

高瓦斯低透性煤层的瓦斯抽放,一直是煤矿安全生产过程中的重大技术难题.

There are of forms of gas discharge , but the form is soft coal seam gas discharge.

目前在瓦斯抽放中急待解决的问题是软煤层瓦斯抽放的打钻技术,尤其是深孔打钻技术.

Test on passing stone gate actual mining in combined mining thick coal seam

厚煤层综采跨石门回采的尝试

Engineering Technology of Clean Energy Resource Utilization& Developing Coal Seam Gas

使用洁净能源&开发煤层气的工程技术

On a global scale, there are many coalfields suffered from spontaneous combustion of coal seam problems.

在全球范围内, 许多煤田都存在煤层自燃问题.

Experimental Study of Incubation Period of Coal Seam Spontaneous Combustion

煤层自然发火潜伏期的实验研究

This paper goes further into blast-winning technology of the composite coal seam face.

深入探讨了复合煤层回采工作面“松动放炮”落煤的工艺问题.

This paper is a guide to precise determination of the content of coal seam methane.

对正确测定煤层瓦斯含量有一定的指导意义.

Grave protrusion coal seam tunnelling hydraulic cutting protrusion-dispelling measures is a new technology in the world.

严重突出煤层掘进水力掏槽防突措施在国际上是一种防突新技术.

Coal Mine, its coal seam is easily spontaneous fire.

大雁二矿煤种为褐煤, 属易自燃发火煤层.

The migrating methane by cross-borehole in coal seam is used in this condition.

交又钻孔抽放本煤层瓦斯正是在这种条件下产生的.

The average UK coal seam is one metre thick.

英国煤层的平均厚度为1米。

The surrounding rock of roadways in soft coal seam has low strength and bad stability.

软煤巷道围岩强度低,稳定性差.

The Experimental Study on Supercritical Water Extraction to Transform Low Seepage Coal Seam

超临界水抽提改造低渗透煤的实验研究

Coal Mine and the coal seam 13-1 has especially complex hydrogeology condition.

新集二矿在特定推覆体水体下的煤层开采, 13-1 煤开采水文地质条件尤为复杂.

Fractal Description of Coal Seam Porosity and Crack System and Its Application

煤层孔隙裂隙系统的分形描述及其应用

Parameter analysis of Coal Seam Gas Exploration and Development

煤层气勘探与开发中的参数分析