1) Mining in medium-thick coal strata
中厚煤层开采
2) high seam mining
开采厚煤层
3) thick seam mining
厚煤层开采
1.
According to the development and application status of the thick seam mining methods in China,the paper analyzed the techni- cal and economic advantages anti application conditions of the high cutting and top coal caving mining methods.
针对目前厚煤层开采方法的发展和应用现状,分析了大采高和放顶煤开采2种方法在技术和经济上的优越性及适用条件,对大采高存在的工作面煤壁片帮与设备下滑问题,以及放顶煤存在采出率低、瓦斯与煤自燃防治、坚硬顶煤的弱化等问题,提出了在开采技术上应该采取的有效措施。
4) thick seam slicing system
厚煤层分层开采
1.
The paper mainly discusses the principle of automatic inlaid mesh connecting method and the deploy application of mesh laying mechanism with hydraulic support in order to realize automatic laying and connecting of false metal mesh roof for thick seam slicing system.
主要论述自动扣压联网法的原理及其铺联网机构与液压支架配套使用来实现厚煤层分层开采金属网假顶的自动铺设和联结。
5) medium-thickness seam mining method
中厚煤层采煤法
6) minable thickness of coa
煤层可开采厚度
补充资料：3300mm中厚板轧机(上海第三钢铁厂)
3300mm中厚板轧机(上海第三钢铁厂)
3300mm中厚板轧机(上海第三钢铁厂)
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条