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- According to the conditions of seam No.5 in Shifengshan Coal Mine,longwall face roof coal drawing method is chosen. 通过对峙峰山煤矿5号煤采煤方法的设计,提出了采用综采放顶煤法回采5号煤。
- This technique has been used successfully in the air-return gate oJ" 1310 fully mechanized roof coal caving face in Zhangcun Coal Mine. 该项研究在漳村1310综放面回风巷的工程实践中得到了成功应用和检验。
- fully mechanized coal mining with caving of roof coal 综采放顶煤
- The Technology Study of Roof Coal Presplitting in Thick Seam Caving Coal Mining 厚煤层放顶煤开采顶煤预裂技术研究
- They are ventilating the sap of a coal mine. 他们正在使煤矿坑道通风。
- That coal mine is no longer worked. 那个煤矿已经不经营了。
- Application of enforcing the brocken roof coal with resin glue in Nan tun coal mine 树脂浆加固破碎顶煤在南屯煤矿的应用
- Laws and Features of the Surface Subsidence Occurred during the Fully-mechanized Coal Mining with Caving of Roof Coal in the High Loose Seam 厚松散层综放开采地表沉陷规律及特点
- Law and Features of Surface Ground Movement in Fully-Mechanized Coal Mining with Caving of Roof Coal under the Condition of Ultra-thick Alluvial Deposit 巨厚冲积层条件下综放开采地表岩移规律及特点
- Coal mining has always been a dangerous occupation. 采煤向来是一种危险职业。
- General bituminous coal mining; Motor freight. 一般烟煤开采;汽车货运。
- Mechanical model for the elastic thick outrigger of roof coal is set up. 建立了顶煤弹性深梁力学模型,分析了顶煤应力分布及顶煤破坏形式。
- They underwrote the coal mine's bonds. 他们同意买下该煤矿的未认购的股票。
- The landscape was destroyed by coal mining. 自然景观由于挖煤而受到了破坏。
- roof coal mining 放顶煤开采
- There is a coal mine near my home town. 我的家乡附近有一个煤矿。
- Jiamusi Coal Mining Machinery Co. 和佳木斯煤矿机械有限公司。
- XUZHOU COAL MINING GROUP CO., LTD. 江苏徐州矿务集团有限公司。
- A coal mining boom has swept across north China. 煤炭行业的繁荣,在华北到处可见。
- Heilongjiang Coal Mining Machinery Group Co. 宣布,已向国有黑龙江煤矿机械集团有限公司。