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- thin coal layer 薄煤层
- In the stone coal layer and the overlying black shale, there is a pyrite layer. 在石煤层或其上部的碳质页岩中含黄铁矿层。
- The State shall encourage coal mining enterprises to carry out second mining or extract residual coal at the margins of mining areas and very thin coal seams. 国家鼓励煤矿企业进行复采或者开采边角残煤和极薄煤。
- The technology of roadway protection with coal waste residue concrete and application in thin coal seam are introduced. 介绍了煤矸渣混凝护巷技术及其在薄煤层中的应用。
- The reserves of thin coal seam shearer and the developing trend of coal seam shearer of our country are analysed. 分析我国薄煤层储量以及薄煤层采煤机的发展状况及趋势。
- The oil shales are associated with and lie on a coal layer of turfy-swampy facies. 煤层顶部发育的巨厚湖相劣质油页岩;分布广;层位稳定;含油率<3.;5%25。
- The widely distributed coal layer adsorbed gas is also an important potential natural gas resource. 分布广泛的煤层吸附气也是重要的潜在天然气资源。
- Using individual hydraulic prop in thin coal seam face is better than the others in the aspect of support strength,premary supporting force,shrink amount and safety. 在薄煤层工作面中使用单体液压支柱，在支护强度、初撑力、可缩量、安全保障及操作人员安全上，都优于其它单体支护材料。
- Wennan colliery of Xinwen Coal Mining Group is an old coalmine and is mining deep coal layer. 汶南煤矿是新汶矿业集团进入深部开采的老矿井。
- How to extract thin coal seam remains a problem faced by all hydromines.Hydraulic mining of such seam in a hydromine proves to be superior to the conventional mining method. 薄煤层如何开采是水采矿井共同面临的一个问题,在水采矿井搞水采比搞旱采有优势。
- The craft manner of full-mechanized mining in thin coal seam is reformed and optimized by computer simulation, optimization and spot test in this paper. 通过计算机模拟、优化和现场实测，对薄煤层综采工艺方式进行了改造和创新，优化了薄煤层综采工艺方式。
- The forming mechanism of the black fume from coal layer type combustion and the measures for elimination the fume kilns are discussed. 论述了煤炭层式燃烧的黑烟产生机理和机烧炉的消烟措施；
- This article recommends a mining technology for thin coal seam with mixed mining,exceeding length and double unit face mining method innovated by Tianchen coal mine. 本文介绍了田陈煤矿创新的综采与普机采混合、工作面超长布置、对拉、旋转调采、矩形和梯形不规则形状的薄煤层开采技术;
- COF direct reduction process,in which carbon-bearing pellet bed covered by a coal layer is open-flame heated, has been investigated. 对盖碳保护下敞焰加热含碳球团堆积料层的直接还原方法(COF法)进行了研究。
- The great undulating of soleplate of the third coal layer in Wangping well field badly influence exploiting disposal and excavating coal laneway. 针对王坪井田3号煤层底板起伏变化大,严重影响开拓及采煤巷道布置的现状,利用趋势面分析的方法,分析了井田内的构造展布规律。
- The reflection wave of coal layer has been filtered,the diffracted wave scattered from the break point is enhanced,and the interpretation of samll KCC is improved. 在深入分析松辽盆地北部各断陷天然气成藏条件的基础上 ,指出各断陷在烃源岩发育、有机质演化程度和盖层条件上存在明显的差异。
- Water inrush from the bottom coal layer in mining work faced now is rather serious in Northern China coalfield, which constraints seriously the normal economical benefits. 在我国华北煤矿区,回采工作面煤层底板突水问题相当严重,困扰着煤矿经济效益的正常发挥。
- Geological and hydrgeological conditions of Haizi Coal Mine is very complicated,which frequently disclose faults and thin coal bedzones,and seriously confine normal production and supersession. 海孜煤矿地质及水文地质条件极其复杂,频繁揭露断层及煤层变薄区,严重地制约了矿井的正常生产与接替。
- In this paper introduce Gu Jiao Coal mine 4# coal layer pressure obseve and analyze, master work face pressure rule. provide according to for reasonable mining and science manage. 介绍古交矿区4%23煤层综采首采面，通过矿压观测研究，初步掌握了该面矿压显现规律。为合理开采4%23煤层、科学管理顶板及支架选型提供了科学依据。
- This mining technology is innovations in the layout of this kind working face,mining method and technologies act and solves many technological difficult problems for the thin coal seam mining. 该开采技术在工作面巷道布置、开采机械、采煤方法、回采工艺等开采技术上进行综合创新,解决了薄煤层开采的技术难题。
