gas coal造句

• Mining high gas coal seam with enclosed mining method
  封闭式采煤法开采高瓦斯煤层
• Comprehensive control of gas at high gas coal face
  高瓦斯采煤工作面的瓦斯综合治理
• Mining area tunnel arrangement in high gas coal seams
  高瓦斯煤层采区巷道布置
• The liquid gas coal gas smog detector
  液化气煤气烟雾报警探测kl - 8818a
• Analysis on the gas coal dust explosion accidence in mennanzhuang coal mine
  孟南庄煤矿瓦斯煤尘爆炸事故原因浅析
• The complex control technology of gas on full mechanized work face in the high gas coal well
  高瓦斯矿井综放工作面瓦斯综合治理技术
• Methane drainage experimental research for the stress - relief roof stratum of working face of high gas coal seam
  高瓦斯综采面顶板覆岩卸压抽放瓦斯试验研究
• The results show that the long - flame coal distributs in the six coal - rich regions , the lignite distribute in southwest and north central region and gas coal distribute in south central of eastern depression on plane
  在平面上，长焰煤在东部凹陷的6个赋煤区均有分布，褐煤分布于东部凹陷西南端和中北部，气煤则集中分布于该凹陷的中南部。
• The qitaihe coal resources isadvantageous , the coal field total area 8 , 000 square kilometers , haveverified the geological reserve 1 . 7 billion tons , the prospectivereserves 4 . 2 billion tons , the coal plant completely , has the cokingcoal , 1 / 3 coking coal , the gas coal , the anthracite and so on 10varieties , by coking coal primarily ; excellent in quality , has theespecially low phosphorus , especially low characteristic and so onsulfur , high heat value , high ash melting point , high silicon content , most is suitable for the coal chemical industry product thedevelopment , is national one of three big protections mining rare coalfields , is the heilongjiang province most important anthraciteproduction base , also is the national important coking coal and thenortheast area biggest high quality coke production base
  七台河煤炭资源得天独厚，煤田总面积8000平方公里,已探明地质储量17亿吨，远景储量42亿吨，煤种齐全，有主焦煤、 1 / 3焦煤、气煤、无烟煤等10个品种，以主焦煤为主；品质优良，具有特低磷、特低硫、高发热值、高灰熔点、高硅含量等特点，最适于煤化工产品的开发，是全国三大保护性开采稀有煤田之一，是黑龙江省最重要的无烟煤生产基地，也是国家重要的主焦煤和东北地区最大的优质焦炭生产基地。
• Under general geological study of exploratory development of coalbed gas and underground gasification of coal bed in eastern depression of liaohe basin , authors apply the basic principle of coal geology and the data of vitrinite reflectance and technical analysis of coal to ascertain that coal classification are dominantely the lignite , long - flame coal and gas coal of coal - bearing upper section of third member of shahejie formation , and then dissertate the variational regularity between coal rank and buried depth in vertical and otherness of vertical limit of coal rank in different coal - rich regions
  摘要运用煤田地质学基本理论和煤的镜质组反射率值及工业分析等有关数据，确定了辽河盆地东部凹陷古近系沙三段含煤亚段的煤种主要为褐煤、长焰煤和气煤；进而阐述了该煤段垂向上煤级与埋深的变化规律性、不同赋煤区各煤级垂向界限的差异性。