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- super high seam mining method 特厚煤层采煤法
- gently inclined high seam mining method 缓倾斜厚煤层采煤法
- inclined high seam mining method 倾斜厚煤层采煤法
- high seam mining method 厚煤层采煤法
- The Backstop Method and Measure at Large Dip Angle Comprehensive Mechanized Coal Mining Face in "Three Soft" Unsteady Super High Seam "三软"不稳定特厚煤层大倾角综采工作面回采方法及措施
- Intoduces that uses breeding fire prevent and cure technology to reduce distribution air volume, quicken workface promoted speed, in high seam mining, it may remove breeding fire accidents in roadway. 介绍了厚煤层开采中采用减少配风量、快工作面推进速度、少采空区遗煤、空区灌浆、氮、采结束的采空区防火技术,能够消除巷道自燃发火事故。
- Intoduces that uses breeding fire prevent and cure technology to reduce distribution air volume,quicken workface promoted speed,in high seam mining,it may remove breeding fire accidents in roadway. 介绍了厚煤层开采中采用减少配风量、加快工作面推进速度、减少采空区遗煤、采空区灌浆、注氮、回采结束的采空区防火技术,能够消除巷道自燃发火事故。
- 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。
- Inclined Medium-thickness Seam Mining Method 急倾斜中厚煤层开采方法
- inclined superhigh seam mining method 倾斜特厚煤层采煤法
- medium-thickness seam mining method 中厚煤层采煤法
- gently inclined medium-thickness seam mining method 缓倾斜中厚煤层采煤法
- super high seam 特厚煤层
- Calculations of High Seam Mining Shield Working Resistance Under "Hard Roof and Coal" Conditions "两硬"条件大采高液压支架工作阻力计算
- A determining method is intreduced to measure leakage and degassing of rubber seals lohich is applied to high vaccum and super high vaccum system. 介绍了高真空和超高真空系统中使用的橡胶密封圈放气和渗漏的测量方法和结果。
- The long base width and steep slope of super high arch dams have make it difficult to control the temperature when adopting full-silo casting method. 摘要特高拱坝由于底宽大、岸坡陡,故采用通仓浇筑时施工期的温度控制难度大。
- High strength rope for mine is manufactured by super high strength polyethylene. 本文介绍该绳索的编织加工工艺、索扣结构及有关性能。
- high seam mining 大采高
- From analyzing coal-gas abstracts gas process, we contrasted and analyzed gas gushing rate from working face at high seam in slices and moveable mining. 从分析煤体瓦斯源解吸瓦斯过程出发,对厚煤层分层开采与综放开采两种开采方式下,工作面瓦斯涌出量作了量化对比分析。
- There is stored high pressure gas from super high pressure gas storage pot before engine working. 风气发动机前期有一个强高压储气罐储的高压气体。